fix: include missing field in repository (#358)

Included missing field in repository.

.claude/settings.json

@@ -1,84 +0,0 @@
-{
-  "hooks": {
-    "PostToolUse": [
-      {
-        "matcher": "Task",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code post-task"
-          }
-        ]
-      },
-      {
-        "matcher": "TodoWrite",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code post-todo"
-          }
-        ]
-      }
-    ],
-    "PreToolUse": [
-      {
-        "matcher": "Task",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code pre-task"
-          }
-        ]
-      }
-    ],
-    "SessionEnd": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code session-end"
-          }
-        ]
-      }
-    ],
-    "SessionStart": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code session-start"
-          }
-        ]
-      }
-    ],
-    "Stop": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code stop"
-          }
-        ]
-      }
-    ],
-    "UserPromptSubmit": [
-      {
-        "matcher": "",
-        "hooks": [
-          {
-            "type": "command",
-            "command": "entire hooks claude-code user-prompt-submit"
-          }
-        ]
-      }
-    ]
-  },
-  "permissions": {
-    "deny": [
-      "Read(./.entire/metadata/**)"
-    ]
-  }
-}

.entire/settings.json

@@ -1,4 +0,0 @@
-{
-  "enabled": true,
-  "telemetry": false
-}

.github/ISSUES/forward-show-tunnel-ratio.md

@@ -0,0 +1,62 @@
+# 功能请求：在规则页面显示隧道倍率
+
+## 问题描述
+
+当前规则（Forward）页面在列表中显示隧道名称，但**不显示隧道的流量倍率（trafficRatio）**。管理员在管理规则时无法快速查看该规则所使用的隧道倍率信息，需要跳转到隧道页面才能查看。
+
+## 期望行为
+
+在规则列表页面中，在隧道名称旁边或单独列显示该隧道的流量倍率（例如：`1x`, `0.5x`, `2x`）。
+
+## 建议实现位置
+
+### 前端修改
+
+1. **`vite-frontend/src/pages/forward.tsx`**
+   - 在 `Forward` interface 中添加 `tunnelTrafficRatio?: number` 字段
+   - 在表格列中添加倍率显示（可以在隧道名称 Chip 旁边或单独一列）
+   - 从 `userTunnel` 或 `getTunnelList` API 获取隧道倍率信息
+
+2. **显示格式建议**
+   ```tsx
+   <Chip className="...">
+     {forward.tunnelName} ({forward.tunnelTrafficRatio}x)
+   </Chip>
+   ```
+   或者单独一列：
+   ```tsx
+   <TableCell>
+     {forward.tunnelTrafficRatio}x
+   </TableCell>
+   ```
+
+### 后端修改
+
+1. **`go-backend/internal/http/handler/handler.go`**
+   - 在 `forwardList` 接口返回中添加隧道的 `trafficRatio` 字段
+   - 需要在查询 Forward 时 JOIN Tunnel 表获取倍率信息
+
+2. **或者在前端加载规则后，批量获取隧道信息**
+   - 调用 `getTunnelList` 获取所有隧道信息
+   - 根据 `tunnelId` 匹配倍率
+
+## 相关文件
+
+- 前端：`vite-frontend/src/pages/forward.tsx`
+- 前端类型：`vite-frontend/src/api/types.ts`
+- 后端：`go-backend/internal/http/handler/handler.go`
+- 隧道类型定义：`vite-frontend/src/api/types.ts` (TunnelApiItem)
+
+## 优先级
+
+中等 - 不影响核心功能，但能提升管理效率
+
+## 截图参考
+
+隧道页面已显示倍率：
+- 位置：隧道卡片统计信息区域
+- 显示格式：`流量倍率 {trafficRatio}x`
+
+---
+
+**Labels**: `enhancement`, `frontend`, `backend`, `ui/ux`

.gitignore

@@ -62,6 +62,9 @@ go-gost/ss/
 .classpath
 .project
 .settings/
+
+# OpenCode session metadata
+.entire/
 bin/
 tmp/
 *.swp

.sisyphus/plans/001-setup-dev-environment.md

@@ -1,71 +0,0 @@
-# Plan: 搭建开发环境
-
-## 目标
-为 Flux Panel 项目安装所有缺失的开发依赖，使 3 个子项目都能本地开发和构建。
-
-## 当前状态
-
-### ✅ 已安装
-| 工具 | 版本 | 用途 |
-|------|------|------|
-| Node.js | v20.19.2 | vite-frontend |
-| npm | 9.2.0 | vite-frontend |
-| Go | 1.24.4 | go-gost |
-| Docker | 29.1.4 | 容器化部署 |
-
-### ❌ 缺失
-| 工具 | 需求版本 | 用途 |
-|------|----------|------|
-| Java | 21 | springboot-backend |
-| Maven | 3.x | 构建后端 |
-| Docker Compose | v2 | 容器编排 |
-
----
-
-## 执行任务
-
-### Task 1: 安装 Java 21
-```bash
-apt-get update && apt-get install -y openjdk-21-jdk
-```
-**验证**: `java -version` 应显示 openjdk 21
-
-### Task 2: 安装 Maven
-```bash
-apt-get install -y maven
-```
-**验证**: `mvn -v` 应显示 Maven 3.x
-
-### Task 3: 安装 Docker Compose Plugin
-```bash
-apt-get install -y docker-compose-plugin
-```
-**验证**: `docker compose version` 应显示版本号
-
-### Task 4: 安装前端依赖
-```bash
-cd /root/flux-panel/vite-frontend && npm install
-```
-**验证**: `node_modules/` 目录存在
-
-### Task 5: 验证后端可构建
-```bash
-cd /root/flux-panel/springboot-backend && mvn clean compile -q
-```
-**验证**: 编译成功无错误
-
-### Task 6: 验证 Go 模块
-```bash
-cd /root/flux-panel/go-gost && go mod download
-```
-**验证**: 依赖下载成功
-
----
-
-## 完成标准
-- [ ] `java -version` → openjdk 21
-- [ ] `mvn -v` → Maven 3.x
-- [ ] `docker compose version` → v2.x
-- [ ] 前端: `npm run dev` 可启动
-- [ ] 后端: `mvn compile` 成功
-- [ ] Go: `go build .` 成功

AGENTS.md

@@ -1,9 +1,9 @@
 # PROJECT KNOWLEDGE BASE
 
-**Generated:** Thu Feb 26 2026
-**Commit:** 21008cc
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
 **Branch:** main
-**Tag:** 2.1.5-rc15
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 FLVX (formerly Flux Panel) is a traffic forwarding management system built on a forked GOST v3 stack. It ships as a Go-based admin API (SQLite/PostgreSQL) + Vite/React UI + Go forwarding agent, with optional mobile WebView wrappers.
@@ -53,6 +53,7 @@ FLVX (formerly Flux Panel) is a traffic forwarding management system built on a
 | `websocket_reporter` | Func | `go-gost/x/socket/websocket_reporter.go` | Panel Telemetry |
 
 ## CONVENTIONS
+- **Skills & MCP**: Always prefer using available skills (via `skill` tool) and MCP tools when applicable. Check for relevant skills before implementing from scratch.
 - **Auth**: `Authorization` header carries the raw JWT token (no `Bearer` prefix) between `vite-frontend/` and `go-backend/`.
 - **Module Fork**: `go-gost/` uses `replace github.com/go-gost/x => ./x` and `go-gost/x/` is also its own Go module.
 - **Encryption**: Agent-to-panel communication uses AES encryption with node `secret` as PSK.
@@ -112,4 +113,11 @@ docker compose -f docker-compose-v6.yml up -d
 - CI workflows: `ci-build.yml` (build check), `docker-build.yml` (multi-arch images + release), `deploy-docs.yml` (MkDocs).
 - PostgreSQL migration supported via `panel_install.sh` menu option using pgloader.
 - Repository layer is large: `repository.go` (83k LOC), `repository_mutations.go` (43k LOC).
-- Button visual parity relies on `vite-frontend/src/shadcn-bridge/heroui/button.tsx` color mapping + `vite-frontend/src/styles/tailwind-theme.pcss` token export.
+- Button visual parity relies on `vite-frontend/src/shadcn-bridge/heroui/button.tsx` color mapping + `vite-frontend/src/styles/tailwind-theme.pcss` token export.
+
+## PLAN DOCUMENT RULE
+- Every new implementation plan must have a dedicated Markdown plan document.
+- Store plan documents under `plans/`.
+- Use an incrementing numeric prefix and a short plan-summary name: `NNN-<plan-summary>.md` (for example, `001-auth-refactor.md`, `002-federation-api-cleanup.md`).
+- The numeric prefix must increase by 1 for each new plan.
+- In each plan document, keep a task checklist and mark each task as completed immediately after finishing it.

IMPLEMENTATION_PLAN.md

@@ -1,148 +0,0 @@
-# 限速功能重构实施计划
-
-## 一、需求概述
-
-**原始需求**: 限速功能当前绑定到具体隧道，需要改为不绑定隧道，创建限速后可以自由在隧道上限速，也可以在转发上限速。
-
-**核心变更**:
-1. 限速规则(SpeedLimit)与隧道的绑定关系改为可选
-2. 转发(Forward)支持独立的限速规则
-
----
-
-## 二、实施计划清单
-
-### 2.0 计划状态（审计更新：2026-02-26）
-
-- 总体状态：**进行中（未验收通过）**
-- 已完成：模型、仓储查询、限速 CRUD、控制面优先级、限速页与类型改造、编译与测试通过
-- 未完成：**Forward 独立限速写入链路**（前端表单 -> API handler -> repository 落库 `forward.speed_id`）
-
-### 2.1 后端模型层 (Model)
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| M1 | SpeedLimit.TunnelID 改为 sql.NullInt64 (可空) | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-| M2 | SpeedLimit.TunnelName 改为 sql.NullString (可空) | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-| M3 | Forward 添加 SpeedID sql.NullInt64 字段 | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-| M4 | ForwardRecord 添加 SpeedID sql.NullInt64 字段 | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-| M5 | SpeedLimitBackup.TunnelID 改为指针类型 | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-| M6 | ForwardBackup 添加 SpeedID *int64 字段 | `go-backend/internal/store/model/model.go` | ✅ 完成 |
-
-### 2.2 后端仓储层 (Repository)
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| R1 | ListSpeedLimits() 返回可空 tunnelId/tunnelName | `go-backend/internal/store/repo/repository.go` | ✅ 完成 |
-| R2 | ListForwards() 返回 speedId 字段 | `go-backend/internal/store/repo/repository.go` | ✅ 完成 |
-| R3 | CreateSpeedLimit() 参数 tunnelID 改为 *int64 | `go-backend/internal/store/repo/repository_mutations.go` | ✅ 完成 |
-| R4 | UpdateSpeedLimit() 参数 tunnelID 改为 *int64 | `go-backend/internal/store/repo/repository_mutations.go` | ✅ 完成 |
-| R5 | GetSpeedLimitTunnelID() 返回 sql.NullInt64 | `go-backend/internal/store/repo/repository_mutations.go` | ✅ 完成 |
-| R6 | exportSpeedLimits() 处理可空字段 | `go-backend/internal/store/repo/repository.go` | ✅ 完成 |
-| R7 | importSpeedLimits() 处理可空字段 | `go-backend/internal/store/repo/repository.go` | ✅ 完成 |
-| R8 | GetSpeedLimitSpeed() 新增方法 | `go-backend/internal/store/repo/repository_flow.go` | ✅ 完成 |
-| R9 | ListForwardsByTunnel() 返回 SpeedID | `go-backend/internal/store/repo/repository_control.go` | ✅ 完成 |
-| R10 | ListActiveForwardsByUser() 返回 SpeedID | `go-backend/internal/store/repo/repository_flow.go` | ✅ 完成 |
-| R11 | ListActiveForwardsByUserTunnel() 返回 SpeedID | `go-backend/internal/store/repo/repository_flow.go` | ✅ 完成 |
-| R12 | GetForwardRecord() 返回 SpeedID | `go-backend/internal/store/repo/repository_flow.go` | ✅ 完成 |
-
-### 2.3 后端处理器层 (Handler)
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| H1 | speedLimitCreate 处理可选 tunnelId | `go-backend/internal/http/handler/mutations.go` | ✅ 完成 |
-| H2 | speedLimitUpdate 处理可选 tunnelId | `go-backend/internal/http/handler/mutations.go` | ✅ 完成 |
-| H3 | speedLimitDelete 处理可空 tunnelID | `go-backend/internal/http/handler/mutations.go` | ✅ 完成 |
-
-### 2.4 后端控制平面 (Control Plane)
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| C1 | syncForwardServices 优先使用 Forward.SpeedID | `go-backend/internal/http/handler/control_plane.go` | ✅ 完成 |
-| C2 | 回退到 UserTunnel 的 speed limit | `go-backend/internal/http/handler/control_plane.go` | ✅ 完成 |
-
-### 2.5 前端类型定义 (TypeScript Types)
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| T1 | SpeedLimitApiItem.tunnelId 改为可选 | `vite-frontend/src/api/types.ts` | ✅ 完成 |
-| T2 | ForwardApiItem 添加 speedId 字段 | `vite-frontend/src/api/types.ts` | ✅ 完成 |
-| T3 | ForwardMutationPayload 添加 speedId 字段 | `vite-frontend/src/api/types.ts` | ✅ 完成 |
-| T4 | SpeedLimitMutationPayload.tunnelId 改为可选 | `vite-frontend/src/api/types.ts` | ✅ 完成 |
-
-### 2.6 前端页面组件
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| F1 | SpeedLimitRule 接口更新 | `vite-frontend/src/pages/limit.tsx` | ✅ 完成 |
-| F2 | SpeedLimitForm 接口更新 | `vite-frontend/src/pages/limit.tsx` | ✅ 完成 |
-| F3 | validateForm 移除 tunnelId 必填校验 | `vite-frontend/src/pages/limit.tsx` | ✅ 完成 |
-| F4 | Select 组件改为可选 | `vite-frontend/src/pages/limit.tsx` | ✅ 完成 |
-| F5 | 显示"未绑定"状态 | `vite-frontend/src/pages/limit.tsx` | ✅ 完成 |
-
-### 2.7 编译验证
-
-| 序号 | 任务 | 状态 |
-|------|------|------|
-| B1 | Go 后端编译通过 | ✅ 完成 |
-| B2 | TypeScript 类型检查通过 | ✅ 完成 |
-| B3 | `go test ./...` 全量通过 | ✅ 完成 |
-| B4 | `go test ./tests/contract/... -run SpeedLimit` 通过 | ✅ 完成 |
-
-### 2.8 Forward 独立限速写入链路补全（新增）
-
-| 序号 | 任务 | 文件 | 状态 |
-|------|------|------|------|
-| N1 | forwardCreate 支持接收并校验可选 speedId，写入 Forward.SpeedID | `go-backend/internal/http/handler/mutations.go` | ✅ 完成 |
-| N2 | forwardUpdate 支持更新/清空 speedId，并触发服务重下发 | `go-backend/internal/http/handler/mutations.go` | ✅ 完成 |
-| N3 | CreateForwardTx 支持落库 speed_id | `go-backend/internal/store/repo/repository_mutations.go` | ✅ 完成 |
-| N4 | UpdateForward 支持更新 speed_id | `go-backend/internal/store/repo/repository_mutations.go` | ✅ 完成 |
-| N5 | Forward 页面新增限速选择并透传 speedId | `vite-frontend/src/pages/forward.tsx` | ✅ 完成 |
-| N6 | Forward 相关契约测试补充 speedId 写入/清空断言 | `go-backend/tests/contract/forward_contract_test.go` | ✅ 完成 |
-
----
-
-## 三、优先级说明
-
-限速规则应用优先级:
-1. **Forward.SpeedID** - 转发级别的限速 (最高优先)
-2. **UserTunnel.SpeedID** - 用户隧道权限级别的限速 (回退)
-
----
-
-## 四、数据库兼容性
-
-- SpeedLimit 表: `tunnel_id` 和 `tunnel_name` 字段改为可空 (GORM AutoMigrate 自动处理)
-- Forward 表: 新增 `speed_id` 可空字段 (GORM AutoMigrate 自动处理)
-
----
-
-## 五、验证检查项
-
-### 5.1 功能验证（审计后）
-
-- [x] 创建不限速规则的限速 (不绑定隧道)
-- [x] 创建绑定隧道的限速 (兼容旧逻辑)
-- [x] 编辑限速规则，切换隧道绑定状态
-- [ ] 删除限速规则
-- [ ] 转发列表正确显示 speedId
-
-### 5.2 API 验证（审计后）
-
-- [x] GET /api/speed-limit/list 返回可选 tunnelId
-- [x] POST /api/speed-limit/create 接受可选 tunnelId
-- [x] POST /api/speed-limit/update 接受可选 tunnelId
-- [ ] GET /api/forward/list 返回 speedId
-
-### 5.3 兼容性验证（审计后）
-
-- [x] 现有绑定隧道的限速规则继续正常工作
-- [ ] 现有 UserTunnel 的限速继续正常工作
-- [ ] 备份/恢复功能正常
-
-### 5.4 Forward 独立限速闭环验证（新增）
-
-- [x] POST /api/forward/create 接受 speedId 并写入 `forward.speed_id`
-- [x] POST /api/forward/update 可更新/清空 speedId
-- [x] Forward 表单可选择限速并提交 speedId
-- [ ] `syncForwardServices` 实际使用 Forward.SpeedID 而非仅回退 UserTunnel.SpeedID

README.md

@@ -33,13 +33,13 @@ curl -L https://raw.githubusercontent.com/Sagit-chu/flux-panel/main/install.sh -
 #### 安装特定版本
 从 [Releases](https://github.com/Sagit-chu/flux-panel/releases) 页面复制对应版本的安装命令，脚本会自动安装该版本而非最新版。
 
-面板端（以 2.1.0 为例）：
+面板端（以 2.1.9-beta6 为例）：
 ```bash
-curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.0/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
+curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.9-beta6/panel_install.sh -o panel_install.sh && chmod +x panel_install.sh && ./panel_install.sh
 ```
-节点端（以 2.1.0 为例）：
+节点端（以 2.1.9-beta6 为例）：
 ```bash
-curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.0/install.sh -o install.sh && chmod +x install.sh && ./install.sh
+curl -L https://github.com/Sagit-chu/flux-panel/releases/download/2.1.9-beta6/install.sh -o install.sh && chmod +x install.sh && ./install.sh
 ```
 
 #### PostgreSQL 部署（Docker Compose）

go-backend/AGENTS.md

@@ -1,5 +1,10 @@
 # GO BACKEND KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Go-based Admin API for FLVX. Replaced legacy Spring Boot backend.
 **Stack:** Go 1.24, net/http (std lib), GORM + SQLite/PostgreSQL (glebarez/sqlite - CGO-free).

go-backend/internal/health/checker.go

@@ -0,0 +1,360 @@
+package health
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net"
+	"strings"
+	"sync"
+	"time"
+
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+	"go-backend/internal/ws"
+)
+
+type nodeCommander interface {
+	SendCommand(nodeID int64, cmdType string, data interface{}, timeout time.Duration) (ws.CommandResult, error)
+}
+
+type Checker struct {
+	repo      *repo.Repository
+	commander nodeCommander
+	lastRun   map[int64]int64
+	inFlight  map[int64]struct{}
+
+	mu     sync.RWMutex
+	cancel context.CancelFunc
+	wg     sync.WaitGroup
+}
+
+func NewChecker(repo *repo.Repository, commander nodeCommander) *Checker {
+	return &Checker{
+		repo:      repo,
+		commander: commander,
+		lastRun:   make(map[int64]int64),
+		inFlight:  make(map[int64]struct{}),
+	}
+}
+
+func (c *Checker) Start(ctx context.Context) {
+	c.mu.Lock()
+	ctx, cancel := context.WithCancel(ctx)
+	c.cancel = cancel
+	c.mu.Unlock()
+
+	c.runChecks(ctx)
+
+	for {
+		limits := c.loadServiceMonitorLimits()
+		scanInterval := time.Duration(limits.CheckerScanIntervalSec) * time.Second
+		if scanInterval <= 0 {
+			scanInterval = 30 * time.Second
+		}
+
+		timer := time.NewTimer(scanInterval)
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case <-timer.C:
+			c.runChecks(ctx)
+		}
+	}
+}
+
+func (c *Checker) Stop() {
+	c.mu.Lock()
+	if c.cancel != nil {
+		c.cancel()
+	}
+	c.mu.Unlock()
+	c.wg.Wait()
+}
+
+func (c *Checker) RunOnce(m *model.ServiceMonitor) (*model.ServiceMonitorResult, error) {
+	if c == nil {
+		return nil, errors.New("checker not initialized")
+	}
+	if m == nil {
+		return nil, errors.New("monitor is nil")
+	}
+	limits := c.loadServiceMonitorLimits()
+	return c.executeCheck(m, time.Now().UnixMilli(), limits), nil
+}
+
+func (c *Checker) runChecks(ctx context.Context) {
+	if c == nil || c.repo == nil {
+		return
+	}
+
+	limits := c.loadServiceMonitorLimits()
+	monitors, err := c.repo.ListEnabledServiceMonitors()
+	if err != nil {
+		log.Printf("service monitor scheduler failed op=list_enabled err=%v", err)
+		return
+	}
+	if len(monitors) == 0 {
+		return
+	}
+
+	// Use persisted result timestamps to avoid restart bursts.
+	latest, err := c.repo.GetLatestServiceMonitorResults()
+	if err != nil {
+		log.Printf("service monitor scheduler failed op=get_latest_results err=%v", err)
+		latest = nil
+	}
+	persistedLast := make(map[int64]int64, len(latest))
+	for _, r := range latest {
+		if r.MonitorID <= 0 || r.Timestamp <= 0 {
+			continue
+		}
+		persistedLast[r.MonitorID] = r.Timestamp
+	}
+
+	now := time.Now().UnixMilli()
+	due := make([]model.ServiceMonitor, 0, len(monitors))
+	for _, m := range monitors {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		intervalSec := m.IntervalSec
+		if intervalSec <= 0 {
+			intervalSec = limits.DefaultIntervalSec
+		}
+		if intervalSec < limits.MinIntervalSec {
+			intervalSec = limits.MinIntervalSec
+		}
+		intervalMs := int64(intervalSec) * 1000
+
+		c.mu.Lock()
+		if _, ok := c.inFlight[m.ID]; ok {
+			c.mu.Unlock()
+			continue
+		}
+
+		lastSeen := persistedLast[m.ID]
+		if v := c.lastRun[m.ID]; v > lastSeen {
+			lastSeen = v
+		}
+		if lastSeen > 0 && intervalMs > 0 && now-lastSeen < intervalMs {
+			c.mu.Unlock()
+			continue
+		}
+
+		c.inFlight[m.ID] = struct{}{}
+		// Use now as a best-effort guard against overlapping scans; the final
+		// timestamp is updated again when the result is persisted.
+		c.lastRun[m.ID] = now
+		c.mu.Unlock()
+
+		due = append(due, m)
+	}
+	if len(due) == 0 {
+		return
+	}
+
+	workerLimit := limits.WorkerLimit
+	if workerLimit <= 0 {
+		workerLimit = 1
+	}
+	if workerLimit > len(due) {
+		workerLimit = len(due)
+	}
+
+	jobs := make(chan model.ServiceMonitor, len(due))
+	for _, m := range due {
+		jobs <- m
+	}
+	close(jobs)
+
+	for i := 0; i < workerLimit; i++ {
+		c.wg.Add(1)
+		go func() {
+			defer c.wg.Done()
+			for {
+				select {
+				case <-ctx.Done():
+					return
+				case m, ok := <-jobs:
+					if !ok {
+						return
+					}
+					ts := time.Now().UnixMilli()
+					result := c.executeCheck(&m, ts, limits)
+					if err := c.repo.InsertServiceMonitorResult(result); err != nil {
+						log.Printf("monitoring write failed op=service_monitor_result.insert monitor_id=%d err=%v", result.MonitorID, err)
+					}
+
+					c.mu.Lock()
+					c.lastRun[m.ID] = result.Timestamp
+					delete(c.inFlight, m.ID)
+					c.mu.Unlock()
+				}
+			}
+		}()
+	}
+}
+
+func (c *Checker) executeCheck(m *model.ServiceMonitor, timestamp int64, limits monitoring.ServiceMonitorLimits) *model.ServiceMonitorResult {
+	result := &model.ServiceMonitorResult{
+		MonitorID: m.ID,
+		NodeID:    m.NodeID,
+		Timestamp: timestamp,
+	}
+
+	timeoutSec := m.TimeoutSec
+	if timeoutSec <= 0 {
+		timeoutSec = limits.DefaultTimeoutSec
+	}
+	if timeoutSec < limits.MinTimeoutSec {
+		timeoutSec = limits.MinTimeoutSec
+	}
+	if timeoutSec > limits.MaxTimeoutSec {
+		timeoutSec = limits.MaxTimeoutSec
+	}
+
+	timeout := time.Duration(timeoutSec) * time.Second
+
+	// When nodeId is set, run checks on the specified node.
+	if m.NodeID > 0 {
+		c.checkOnNode(m, timeoutSec, timeout, result)
+		return result
+	}
+
+	switch strings.ToLower(strings.TrimSpace(m.Type)) {
+	case "tcp":
+		c.checkTCP(m.Target, timeout, result)
+	case "icmp":
+		result.Success = 0
+		result.ErrorMessage = "ICMP 监控必须指定执行节点"
+	default:
+		result.Success = 0
+		result.ErrorMessage = fmt.Sprintf("不支持的检查类型: %s", m.Type)
+	}
+
+	return result
+}
+
+func (c *Checker) loadServiceMonitorLimits() monitoring.ServiceMonitorLimits {
+	defaults := monitoring.DefaultServiceMonitorLimits()
+	if c == nil || c.repo == nil {
+		return defaults
+	}
+	cfg, err := c.repo.GetConfigsByNames([]string{
+		monitoring.ConfigServiceMonitorCheckerScanIntervalSec,
+		monitoring.ConfigServiceMonitorWorkerLimit,
+		monitoring.ConfigServiceMonitorMinIntervalSec,
+		monitoring.ConfigServiceMonitorDefaultIntervalSec,
+		monitoring.ConfigServiceMonitorMinTimeoutSec,
+		monitoring.ConfigServiceMonitorDefaultTimeoutSec,
+		monitoring.ConfigServiceMonitorMaxTimeoutSec,
+	})
+	if err != nil {
+		return defaults
+	}
+	return monitoring.ServiceMonitorLimitsFromConfigMap(cfg)
+}
+
+type serviceMonitorCheckRequest struct {
+	MonitorID  int64  `json:"monitorId"`
+	Type       string `json:"type"`
+	Target     string `json:"target"`
+	TimeoutSec int    `json:"timeoutSec"`
+}
+
+func (c *Checker) checkOnNode(m *model.ServiceMonitor, timeoutSec int, timeout time.Duration, result *model.ServiceMonitorResult) {
+	if c == nil || m == nil || result == nil {
+		return
+	}
+	if c.commander == nil {
+		result.Success = 0
+		result.ErrorMessage = "节点检查不可用"
+		return
+	}
+
+	checkType := strings.ToLower(strings.TrimSpace(m.Type))
+	if checkType != "tcp" && checkType != "icmp" {
+		result.Success = 0
+		result.ErrorMessage = fmt.Sprintf("不支持的检查类型: %s", m.Type)
+		return
+	}
+	if strings.TrimSpace(m.Target) == "" {
+		result.Success = 0
+		result.ErrorMessage = "检查目标为空"
+		return
+	}
+
+	req := serviceMonitorCheckRequest{
+		MonitorID:  m.ID,
+		Type:       checkType,
+		Target:     m.Target,
+		TimeoutSec: timeoutSec,
+	}
+
+	cmdTimeout := timeout
+	if cmdTimeout < 2*time.Second {
+		cmdTimeout = 2 * time.Second
+	}
+	cmdTimeout = cmdTimeout + 2*time.Second
+
+	cmdRes, err := c.commander.SendCommand(m.NodeID, "ServiceMonitorCheck", req, cmdTimeout)
+	if err != nil {
+		result.Success = 0
+		result.ErrorMessage = err.Error()
+		return
+	}
+	if cmdRes.Data == nil {
+		result.Success = 0
+		result.ErrorMessage = "节点返回为空"
+		return
+	}
+
+	if v, ok := cmdRes.Data["success"]; ok {
+		if b, ok := v.(bool); ok {
+			if b {
+				result.Success = 1
+			} else {
+				result.Success = 0
+			}
+		}
+	}
+	if v, ok := cmdRes.Data["latencyMs"]; ok {
+		if f, ok := v.(float64); ok {
+			result.LatencyMs = f
+		}
+	}
+	if v, ok := cmdRes.Data["statusCode"]; ok {
+		if f, ok := v.(float64); ok {
+			result.StatusCode = int(f)
+		}
+	}
+	if v, ok := cmdRes.Data["errorMessage"]; ok {
+		if s, ok := v.(string); ok {
+			result.ErrorMessage = s
+		}
+	}
+}
+
+func (c *Checker) checkTCP(target string, timeout time.Duration, result *model.ServiceMonitorResult) {
+	start := time.Now()
+
+	conn, err := net.DialTimeout("tcp", target, timeout)
+	latency := time.Since(start)
+
+	result.LatencyMs = float64(latency.Milliseconds())
+
+	if err != nil {
+		result.Success = 0
+		result.ErrorMessage = err.Error()
+		return
+	}
+	_ = conn.Close()
+	result.Success = 1
+}

go-backend/internal/health/checker_test.go

@@ -0,0 +1,477 @@
+package health
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+	"go-backend/internal/ws"
+)
+
+type fakeCommander struct {
+	lastNodeID int64
+	lastType   string
+	lastData   interface{}
+	res        ws.CommandResult
+	err        error
+}
+
+type delayedCommander struct {
+	delayByMonitorID map[int64]time.Duration
+}
+
+func (d *delayedCommander) SendCommand(nodeID int64, cmdType string, data interface{}, _ time.Duration) (ws.CommandResult, error) {
+	_ = nodeID
+	_ = cmdType
+	if req, ok := data.(serviceMonitorCheckRequest); ok {
+		if delay := d.delayByMonitorID[req.MonitorID]; delay > 0 {
+			time.Sleep(delay)
+		}
+	}
+	return ws.CommandResult{
+		Success: true,
+		Data: map[string]interface{}{
+			"success":   true,
+			"latencyMs": float64(1),
+		},
+	}, nil
+}
+
+func (f *fakeCommander) SendCommand(nodeID int64, cmdType string, data interface{}, _ time.Duration) (ws.CommandResult, error) {
+	f.lastNodeID = nodeID
+	f.lastType = cmdType
+	f.lastData = data
+	return f.res, f.err
+}
+
+func TestTCPHealthCheckViaMonitor(t *testing.T) {
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	addr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	t.Run("successful tcp check", func(t *testing.T) {
+		checker := NewChecker(nil, nil)
+		limits := checker.loadServiceMonitorLimits()
+		now := time.Now().UnixMilli()
+		monitor := &model.ServiceMonitor{
+			Type:       "tcp",
+			Target:     addr,
+			TimeoutSec: 5,
+		}
+		result := checker.executeCheck(monitor, now, limits)
+		if result.Success != 1 {
+			t.Fatalf("expected success, got error: %s", result.ErrorMessage)
+		}
+		if result.LatencyMs < 0 {
+			t.Fatalf("expected non-negative latency, got %f", result.LatencyMs)
+		}
+	})
+
+	t.Run("failed tcp check - connection refused", func(t *testing.T) {
+		checker := NewChecker(nil, nil)
+		limits := checker.loadServiceMonitorLimits()
+		now := time.Now().UnixMilli()
+		monitor := &model.ServiceMonitor{
+			Type:       "tcp",
+			Target:     "127.0.0.1:1",
+			TimeoutSec: 1,
+		}
+		result := checker.executeCheck(monitor, now, limits)
+		if result.Success == 1 {
+			t.Fatalf("expected failure for connection refused")
+		}
+		if result.ErrorMessage == "" {
+			t.Fatalf("expected error message")
+		}
+	})
+}
+
+func TestCheckerRunChecks(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	tcpAddr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	now := time.Now().UnixMilli()
+
+	monitors := []*model.ServiceMonitor{
+		{
+			Name:        "TCP Monitor",
+			Type:        "tcp",
+			Target:      tcpAddr,
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     1,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+		{
+			Name:        "TCP Monitor 2",
+			Type:        "tcp",
+			Target:      tcpAddr,
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     1,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+		{
+			Name:        "Disabled Monitor",
+			Type:        "tcp",
+			Target:      "127.0.0.1:1",
+			IntervalSec: 60,
+			TimeoutSec:  5,
+			NodeID:      0,
+			Enabled:     0,
+			CreatedTime: now,
+			UpdatedTime: now,
+		},
+	}
+
+	for _, m := range monitors {
+		if err := r.CreateServiceMonitor(m); err != nil {
+			t.Fatalf("create monitor: %v", err)
+		}
+	}
+
+	monitors[2].Enabled = 0
+	if err := r.UpdateServiceMonitor(monitors[2]); err != nil {
+		t.Fatalf("update disabled monitor: %v", err)
+	}
+
+	enabledMonitors, err := r.ListEnabledServiceMonitors()
+	if err != nil {
+		t.Fatalf("list enabled monitors: %v", err)
+	}
+	if len(enabledMonitors) != 2 {
+		t.Fatalf("expected 2 enabled monitors, got %d", len(enabledMonitors))
+	}
+
+	checker := NewChecker(r, nil)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	go checker.Start(ctx)
+	time.Sleep(500 * time.Millisecond)
+
+	results, err := r.GetServiceMonitorResults(monitors[0].ID, 10)
+	if err != nil {
+		t.Fatalf("get tcp results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected at least one result for tcp monitor")
+	}
+	for _, res := range results {
+		if res.Success != 1 {
+			t.Fatalf("expected success for tcp monitor, got failure: %s", res.ErrorMessage)
+		}
+	}
+
+	results2, err := r.GetServiceMonitorResults(monitors[1].ID, 10)
+	if err != nil {
+		t.Fatalf("get tcp results 2: %v", err)
+	}
+	if len(results2) == 0 {
+		t.Fatalf("expected at least one result for tcp monitor 2")
+	}
+	for _, res := range results2 {
+		if res.Success != 1 {
+			t.Fatalf("expected success for tcp monitor 2, got failure: %s", res.ErrorMessage)
+		}
+	}
+
+	disabledResults, err := r.GetServiceMonitorResults(monitors[2].ID, 10)
+	if err != nil {
+		t.Fatalf("get disabled results: %v", err)
+	}
+	if len(disabledResults) != 0 {
+		t.Fatalf("expected no results for disabled monitor, got %d", len(disabledResults))
+	}
+}
+
+func TestCheckerUnsupportedType(t *testing.T) {
+	checker := NewChecker(nil, nil)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Type:       "http",
+		Target:     "https://example.com",
+		TimeoutSec: 5,
+	}
+	result := checker.executeCheck(monitor, now, limits)
+	if result.Success == 1 {
+		t.Fatalf("expected failure for unsupported type")
+	}
+	if result.ErrorMessage == "" {
+		t.Fatalf("expected error message for unsupported type")
+	}
+}
+
+func TestCheckerDefaultTimeout(t *testing.T) {
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+	addr := listener.Addr().String()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	checker := NewChecker(nil, nil)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Type:       "tcp",
+		Target:     addr,
+		TimeoutSec: 0,
+	}
+	result := checker.executeCheck(monitor, now, limits)
+	if result.Success != 1 {
+		t.Fatalf("expected success with default timeout, got error: %s", result.ErrorMessage)
+	}
+}
+
+func TestCheckerStop(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	listener, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatalf("listen: %v", err)
+	}
+	defer listener.Close()
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				return
+			}
+			conn.Close()
+		}
+	}()
+
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Name:        "Test Monitor",
+		Type:        "tcp",
+		Target:      listener.Addr().String(),
+		IntervalSec: 60,
+		TimeoutSec:  5,
+		NodeID:      0,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(monitor); err != nil {
+		t.Fatalf("create monitor: %v", err)
+	}
+
+	checker := NewChecker(r, nil)
+
+	ctx := context.Background()
+	go checker.Start(ctx)
+
+	time.Sleep(100 * time.Millisecond)
+	checker.Stop()
+
+	results, err := r.GetServiceMonitorResults(monitor.ID, 10)
+	if err != nil {
+		t.Fatalf("get results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected at least one result before stop")
+	}
+}
+
+func TestCheckerRunsOnNodeWhenNodeIDSet(t *testing.T) {
+	fake := &fakeCommander{
+		res: ws.CommandResult{
+			Success: true,
+			Data: map[string]interface{}{
+				"success":      false,
+				"latencyMs":    float64(12),
+				"errorMessage": "unreachable",
+			},
+		},
+	}
+	checker := NewChecker(nil, fake)
+	limits := checker.loadServiceMonitorLimits()
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		ID:         99,
+		Type:       "icmp",
+		Target:     "8.8.8.8",
+		TimeoutSec: 2,
+		NodeID:     123,
+	}
+	res := checker.executeCheck(monitor, now, limits)
+	if fake.lastNodeID != 123 {
+		t.Fatalf("expected command to be sent to node 123, got %d", fake.lastNodeID)
+	}
+	if fake.lastType != "ServiceMonitorCheck" {
+		t.Fatalf("expected ServiceMonitorCheck command, got %s", fake.lastType)
+	}
+	if res.Success != 0 {
+		t.Fatalf("expected failed result from node check")
+	}
+	if res.ErrorMessage != "unreachable" {
+		t.Fatalf("expected errorMessage unreachable, got %q", res.ErrorMessage)
+	}
+}
+
+func TestCheckerDoesNotBurstOnRestartWhenRecentResultsExist(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	monitor := &model.ServiceMonitor{
+		Name:        "recent-monitor",
+		Type:        "tcp",
+		Target:      "127.0.0.1:1",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      0,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(monitor); err != nil {
+		t.Fatalf("create monitor: %v", err)
+	}
+	if err := r.InsertServiceMonitorResult(&model.ServiceMonitorResult{
+		MonitorID: monitor.ID,
+		NodeID:    0,
+		Timestamp: now - 10_000,
+		Success:   1,
+	}); err != nil {
+		t.Fatalf("seed recent result: %v", err)
+	}
+
+	checker := NewChecker(r, nil)
+	ctx, cancel := context.WithCancel(context.Background())
+	go checker.Start(ctx)
+	// Give the initial scan a chance to run.
+	time.Sleep(200 * time.Millisecond)
+	cancel()
+	checker.Stop()
+
+	results, err := r.GetServiceMonitorResults(monitor.ID, 10)
+	if err != nil {
+		t.Fatalf("get results: %v", err)
+	}
+	if len(results) != 1 {
+		t.Fatalf("expected no immediate rerun (1 result), got %d", len(results))
+	}
+}
+
+func TestCheckerConcurrencyPreventsSlowMonitorBlockingOthers(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	now := time.Now().UnixMilli()
+	// Force worker limit to at least 2 for this test.
+	_ = r.UpsertConfig(monitoring.ConfigServiceMonitorWorkerLimit, "2", now)
+
+	slow := &model.ServiceMonitor{
+		Name:        "slow",
+		Type:        "icmp",
+		Target:      "8.8.8.8",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      123,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(slow); err != nil {
+		t.Fatalf("create slow monitor: %v", err)
+	}
+	fast := &model.ServiceMonitor{
+		Name:        "fast",
+		Type:        "icmp",
+		Target:      "1.1.1.1",
+		IntervalSec: 60,
+		TimeoutSec:  1,
+		NodeID:      123,
+		Enabled:     1,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if err := r.CreateServiceMonitor(fast); err != nil {
+		t.Fatalf("create fast monitor: %v", err)
+	}
+
+	cmd := &delayedCommander{delayByMonitorID: map[int64]time.Duration{slow.ID: 800 * time.Millisecond}}
+	checker := NewChecker(r, cmd)
+	ctx, cancel := context.WithCancel(context.Background())
+	go checker.Start(ctx)
+
+	// Fast monitor should complete even while slow one is still running.
+	time.Sleep(250 * time.Millisecond)
+	results, err := r.GetServiceMonitorResults(fast.ID, 10)
+	if err != nil {
+		t.Fatalf("get fast results: %v", err)
+	}
+	if len(results) == 0 {
+		t.Fatalf("expected fast monitor to have results without waiting for slow")
+	}
+
+	cancel()
+	checker.Stop()
+}

go-backend/internal/http/handler/AGENTS.md

@@ -1,6 +1,9 @@
 # BACKEND HTTP HANDLER KNOWLEDGE BASE
 
-**Generated:** Thu Feb 26 2026
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 HTTP request handlers for FLVX Admin API. Core business logic layer.

go-backend/internal/http/handler/control_plane.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net"
 	"net/http"
+	"net/url"
 	"sort"
 	"strconv"
 	"strings"
@@ -72,7 +73,7 @@ func (h *Handler) buildDiagnosisStreamStartItems(workItems []diagnosisWorkItem)
 			fromNode, _ := h.cachedNode(nodeCache, workItem.fromNodeID)
 			targetNode, err := h.cachedNode(nodeCache, workItem.toNode.NodeID)
 			if err == nil {
-				resolvedIP, resolvedPort, resolveErr := resolveChainProbeTarget(fromNode, targetNode, workItem.toNode.Port, workItem.ipPreference)
+				resolvedIP, resolvedPort, resolveErr := resolveChainProbeTarget(fromNode, targetNode, workItem.toNode.Port, workItem.ipPreference, workItem.toNode.ConnectIP)
 				if resolveErr == nil {
 					targetIP = resolvedIP
 					targetPort = resolvedPort
@@ -223,20 +224,32 @@ func (h *Handler) listUserTunnelIDsByUser(userID int64) ([]int64, error) {
 }
 
 func (h *Handler) syncForwardServices(forward *forwardRecord, method string, allowFallbackAdd bool) error {
+	_, err := h.syncForwardServicesWithWarnings(forward, method, allowFallbackAdd)
+	return err
+}
+
+func (h *Handler) syncForwardServicesWithWarnings(forward *forwardRecord, method string, allowFallbackAdd bool) ([]string, error) {
 	if h == nil || forward == nil {
-		return errors.New("invalid forward sync context")
+		return nil, errors.New("invalid forward sync context")
 	}
 
 	tunnel, err := h.getTunnelRecord(forward.TunnelID)
 	if err != nil {
-		return err
+		return nil, err
 	}
 	ports, err := h.listForwardPorts(forward.ID)
 	if err != nil {
-		return err
+		return nil, err
 	}
 	if len(ports) == 0 {
-		return errors.New("转发入口端口不存在")
+		return nil, errors.New("转发入口端口不存在")
+	}
+	warnings := make([]string, 0)
+
+	// Resolve user tunnel first so runtime service name can carry the real user_tunnel id.
+	userTunnelID, utLimiterID, utSpeed, err := h.resolveUserTunnelAndLimiter(forward.UserID, forward.TunnelID)
+	if err != nil {
+		return nil, err
 	}
 
 	// Determine limiter from forward's SpeedID first, fallback to UserTunnel's limiter
@@ -254,45 +267,171 @@ func (h *Handler) syncForwardServices(forward *forwardRecord, method string, all
 
 	if limiterID == nil {
 		// Fall back to UserTunnel speed limit
-		var utLimiterID *int64
-		var utSpeed *int
-		_, utLimiterID, utSpeed, err = h.resolveUserTunnelAndLimiter(forward.UserID, forward.TunnelID)
-		if err != nil {
-			return err
-		}
 		limiterID = utLimiterID
 		speed = utSpeed
 	}
 
-	serviceBase := buildForwardServiceBase(forward.ID, forward.UserID, 0)
+	serviceBase := buildForwardServiceBaseWithResolvedUserTunnel(forward.ID, forward.UserID, userTunnelID)
 	tunnelTLSProtocol, err := h.isTunnelSelectedTLSProtocol(forward.TunnelID)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	for _, fp := range ports {
 		if limiterID != nil && speed != nil {
 			if err := h.ensureLimiterOnNode(fp.NodeID, *limiterID, *speed); err != nil {
-				return err
+				return nil, err
 			}
 		}
 
 		node, err := h.getNodeRecord(fp.NodeID)
 		if err != nil {
-			return err
+			return nil, err
 		}
-		services := buildForwardServiceConfigs(serviceBase, forward, tunnel, node, fp.Port, limiterID, tunnelTLSProtocol)
+		services := buildForwardServiceConfigs(serviceBase, forward, tunnel, node, fp.Port, strings.TrimSpace(fp.InIP), limiterID, tunnelTLSProtocol)
 		_, err = h.sendNodeCommand(node.ID, method, services, true, false)
 		if err != nil && allowFallbackAdd && method == "UpdateService" {
+			if isNotFoundError(err) {
+				if delErr := h.deleteForwardServicesOnNode(forward, node.ID); delErr != nil && !isNotFoundError(delErr) {
+					return warnings, fmt.Errorf("节点 %s 清理旧服务失败: %w", node.Name, delErr)
+				}
+			}
 			_, err = h.sendNodeCommand(node.ID, "AddService", services, true, false)
 		}
+		if err != nil && strings.EqualFold(strings.TrimSpace(method), "UpdateService") && isAddressAlreadyInUseError(err) {
+			err = h.rebindForwardServiceOnSelfOccupiedPort(forward, node, fp.Port, services)
+		}
+		if err != nil && strings.EqualFold(strings.TrimSpace(method), "UpdateService") && isCannotAssignRequestedAddressError(err) {
+			var warning string
+			warning, err = h.fallbackForwardPortToDefaultBind(forward, tunnel, node, fp, serviceBase, limiterID, tunnelTLSProtocol)
+			if err == nil && warning != "" {
+				warnings = append(warnings, warning)
+			}
+		}
 		if err != nil {
-			return fmt.Errorf("节点 %s 下发失败: %w", node.Name, err)
+			return warnings, fmt.Errorf("节点 %s 下发失败: %w", node.Name, err)
 		}
 	}
+
+	// Keep paused forwards paused after UpdateService/AddService, since agent-side UpdateService
+	// always restarts services.
+	if forward.Status != 1 {
+		if err := h.controlForwardServices(forward, "PauseService", false); err != nil {
+			return warnings, err
+		}
+	}
+	return warnings, nil
+}
+
+func (h *Handler) fallbackForwardPortToDefaultBind(forward *forwardRecord, tunnel *tunnelRecord, node *nodeRecord, fp forwardPortRecord, serviceBase string, limiterID *int64, tunnelTLSProtocol bool) (string, error) {
+	if h == nil || forward == nil || tunnel == nil || node == nil {
+		return "", errors.New("invalid bind fallback context")
+	}
+	if fp.Port <= 0 {
+		return "", errors.New("invalid forward port")
+	}
+	explicitBindIP := strings.TrimSpace(fp.InIP)
+	if explicitBindIP == "" {
+		return "", errors.New("default bind address cannot be assigned")
+	}
+
+	if err := h.deleteForwardServicesOnNode(forward, node.ID); err != nil {
+		return "", err
+	}
+
+	time.Sleep(150 * time.Millisecond)
+	defaultServices := buildForwardServiceConfigs(serviceBase, forward, tunnel, node, fp.Port, "", limiterID, tunnelTLSProtocol)
+	if _, err := h.sendNodeCommand(node.ID, "AddService", defaultServices, true, false); err != nil {
+		return "", err
+	}
+	if err := h.repo.UpdateForwardPortBindIP(forward.ID, node.ID, fp.Port, ""); err != nil {
+		return "", err
+	}
+
+	warning := fmt.Sprintf("节点 %s 监听IP %s 不在主机网卡地址中，已自动回退为默认监听IP", strings.TrimSpace(node.Name), explicitBindIP)
+	return warning, nil
+}
+
+func (h *Handler) rebindForwardServiceOnSelfOccupiedPort(forward *forwardRecord, node *nodeRecord, port int, services []map[string]interface{}) error {
+	if h == nil || forward == nil || node == nil {
+		return errors.New("invalid self-occupy rebind context")
+	}
+	if port <= 0 {
+		return errors.New("invalid forward port")
+	}
+
+	hasOtherForward, err := h.repo.HasOtherForwardOnNodePort(node.ID, port, forward.ID)
+	if err != nil {
+		return err
+	}
+	if hasOtherForward {
+		return fmt.Errorf("端口 %d 已被其他转发占用", port)
+	}
+
+	bases, err := h.forwardServiceBaseCandidates(forward)
+	if err != nil {
+		return err
+	}
+
+	if err := h.deleteForwardServiceBasesOnNode(node.ID, bases); err != nil {
+		return err
+	}
+
+	time.Sleep(150 * time.Millisecond)
+
+	_, err = h.sendNodeCommand(node.ID, "AddService", services, true, false)
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
 
+func (h *Handler) deleteForwardServicesOnNode(forward *forwardRecord, nodeID int64) error {
+	if h == nil || forward == nil {
+		return errors.New("invalid forward delete context")
+	}
+	bases, err := h.forwardServiceBaseCandidates(forward)
+	if err != nil {
+		return err
+	}
+	return h.deleteForwardServiceBasesOnNode(nodeID, bases)
+
+}
+
+func (h *Handler) forwardServiceBaseCandidates(forward *forwardRecord) ([]string, error) {
+	if h == nil || forward == nil {
+		return nil, errors.New("invalid forward service base context")
+	}
+	userTunnelID, _, _, err := h.resolveUserTunnelAndLimiter(forward.UserID, forward.TunnelID)
+	if err != nil {
+		return nil, err
+	}
+	userTunnelIDs, err := h.listUserTunnelIDs(forward.UserID, forward.TunnelID)
+	if err != nil {
+		return nil, err
+	}
+	allUserTunnelIDs, err := h.listUserTunnelIDsByUser(forward.UserID)
+	if err != nil {
+		return nil, err
+	}
+	candidateTunnelIDs := make([]int64, 0, len(userTunnelIDs)+len(allUserTunnelIDs))
+	candidateTunnelIDs = append(candidateTunnelIDs, userTunnelIDs...)
+	candidateTunnelIDs = append(candidateTunnelIDs, allUserTunnelIDs...)
+	return buildForwardServiceBaseCandidates(forward.ID, forward.UserID, userTunnelID, candidateTunnelIDs), nil
+
+}
+
+func (h *Handler) deleteForwardServiceBasesOnNode(nodeID int64, bases []string) error {
+	return deleteForwardServiceCandidates(bases, func(name string) error {
+		payload := map[string]interface{}{
+			"services": []string{name},
+		}
+		_, err := h.sendNodeCommand(nodeID, "DeleteService", payload, false, false)
+		return err
+	})
+}
+
 func (h *Handler) controlForwardServices(forward *forwardRecord, commandType string, tolerateNotFound bool) error {
 	if h == nil || forward == nil {
 		return errors.New("invalid forward control context")
@@ -321,40 +460,26 @@ func (h *Handler) controlForwardServices(forward *forwardRecord, commandType str
 	candidateTunnelIDs = append(candidateTunnelIDs, allUserTunnelIDs...)
 	bases := buildForwardServiceBaseCandidates(forward.ID, forward.UserID, userTunnelID, candidateTunnelIDs)
 	seen := map[int64]struct{}{}
+	healed := false
 	for _, fp := range ports {
 		if _, ok := seen[fp.NodeID]; ok {
 			continue
 		}
 		seen[fp.NodeID] = struct{}{}
 
-		var lastNotFoundErr error
-		nodeHandled := false
+		nodeHandled, lastNotFoundErr, err := h.controlForwardServicesOnNode(fp.NodeID, bases, commandType)
+		if err != nil {
+			return err
+		}
 
-		for _, base := range bases {
-			variants := []string{base + "_tcp", base + "_udp"}
-			if shouldTryLegacySingleService(commandType) || strings.EqualFold(strings.TrimSpace(commandType), "DeleteService") {
-				variants = append(variants, base)
+		if !nodeHandled && lastNotFoundErr != nil && !healed && shouldSelfHealForwardServiceControl(commandType) {
+			if healErr := h.syncForwardServices(forward, "UpdateService", true); healErr != nil {
+				return healErr
 			}
-
-			candidateHandled := false
-			for _, name := range variants {
-				payload := map[string]interface{}{
-					"services": []string{name},
-				}
-				_, err := h.sendNodeCommand(fp.NodeID, commandType, payload, false, false)
-				if err == nil {
-					candidateHandled = true
-					continue
-				}
-				if !isNotFoundError(err) {
-					return err
-				}
-				lastNotFoundErr = err
-			}
-
-			if candidateHandled {
-				nodeHandled = true
-				break
+			healed = true
+			nodeHandled, lastNotFoundErr, err = h.controlForwardServicesOnNode(fp.NodeID, bases, commandType)
+			if err != nil {
+				return err
 			}
 		}
 
@@ -372,6 +497,65 @@ func (h *Handler) controlForwardServices(forward *forwardRecord, commandType str
 	return nil
 }
 
+func (h *Handler) controlForwardServicesOnNode(nodeID int64, bases []string, commandType string) (bool, error, error) {
+	return controlForwardServiceCommand(bases, commandType, func(name string) error {
+		payload := map[string]interface{}{
+			"services": []string{name},
+		}
+		_, err := h.sendNodeCommand(nodeID, commandType, payload, false, false)
+		return err
+	})
+}
+
+func controlForwardServiceCommand(bases []string, commandType string, send func(name string) error) (bool, error, error) {
+	var lastNotFoundErr error
+	for _, base := range bases {
+		variants := []string{base + "_tcp", base + "_udp"}
+		if shouldTryLegacySingleService(commandType) || strings.EqualFold(strings.TrimSpace(commandType), "DeleteService") {
+			variants = append(variants, base)
+		}
+
+		candidateHandled := false
+		for _, name := range variants {
+			err := send(name)
+			if err == nil {
+				candidateHandled = true
+				continue
+			}
+			if !isNotFoundError(err) {
+				return false, lastNotFoundErr, err
+			}
+			lastNotFoundErr = err
+		}
+
+		if candidateHandled {
+			return true, nil, nil
+		}
+	}
+	return false, lastNotFoundErr, nil
+}
+
+func deleteForwardServiceCandidates(bases []string, send func(name string) error) error {
+	for _, base := range bases {
+		for _, name := range append([]string{base + "_tcp", base + "_udp", base}, []string{}...) {
+			err := send(name)
+			if err == nil {
+				continue
+			}
+			if isNotFoundError(err) {
+				continue
+			}
+			return err
+		}
+	}
+	return nil
+}
+
+func shouldSelfHealForwardServiceControl(commandType string) bool {
+	cmd := strings.ToLower(strings.TrimSpace(commandType))
+	return cmd == "pauseservice" || cmd == "resumeservice"
+}
+
 func (h *Handler) applyNodeProtocolChange(nodeID int64, httpVal, tlsVal, socksVal int) error {
 	_, err := h.sendNodeCommand(nodeID, "SetProtocol", map[string]interface{}{
 		"http":  httpVal,
@@ -1099,7 +1283,7 @@ func (h *Handler) appendChainHopDiagnosis(results *[]map[string]interface{}, nod
 		h.appendFailedDiagnosis(results, nodeCache, fromNodeID, "", 0, description, metadata, err.Error())
 		return
 	}
-	targetIP, targetPort, err := resolveChainProbeTarget(fromNode, targetNode, toNode.Port, ipPreference)
+	targetIP, targetPort, err := resolveChainProbeTarget(fromNode, targetNode, toNode.Port, ipPreference, toNode.ConnectIP)
 	if err != nil {
 		h.appendFailedDiagnosis(results, nodeCache, fromNodeID, strings.Trim(strings.TrimSpace(targetNode.ServerIP), "[]"), toNode.Port, description, metadata, err.Error())
 		return
@@ -1107,11 +1291,11 @@ func (h *Handler) appendChainHopDiagnosis(results *[]map[string]interface{}, nod
 	h.appendPathDiagnosis(results, nodeCache, fromNodeID, targetIP, targetPort, description, metadata, options)
 }
 
-func resolveChainProbeTarget(fromNode, targetNode *nodeRecord, preferredPort int, ipPreference string) (string, int, error) {
+func resolveChainProbeTarget(fromNode, targetNode *nodeRecord, preferredPort int, ipPreference string, connectIp string) (string, int, error) {
 	if targetNode == nil {
 		return "", 0, errors.New("目标节点不存在")
 	}
-	host, err := selectTunnelDialHost(fromNode, targetNode, ipPreference)
+	host, err := selectTunnelDialHost(fromNode, targetNode, ipPreference, connectIp)
 	if err != nil {
 		host = strings.Trim(strings.TrimSpace(targetNode.ServerIP), "[]")
 	}
@@ -1246,6 +1430,13 @@ func buildForwardServiceBase(forwardID, userID, userTunnelID int64) string {
 	return fmt.Sprintf("%d_%d_%d", forwardID, userID, userTunnelID)
 }
 
+func buildForwardServiceBaseWithResolvedUserTunnel(forwardID, userID, resolvedUserTunnelID int64) string {
+	if resolvedUserTunnelID <= 0 {
+		return buildForwardServiceBase(forwardID, userID, 0)
+	}
+	return buildForwardServiceBase(forwardID, userID, resolvedUserTunnelID)
+}
+
 func buildForwardServiceBaseCandidates(forwardID, userID, preferredUserTunnelID int64, userTunnelIDs []int64) []string {
 	orderedIDs := make([]int64, 0, len(userTunnelIDs)+2)
 	seen := make(map[int64]struct{}, len(userTunnelIDs)+2)
@@ -1297,13 +1488,64 @@ func isAlreadyExistsMessage(message string) bool {
 	if msg == "" {
 		return false
 	}
-	if strings.Contains(msg, "address already in use") {
+	if isAddressAlreadyInUseMessage(msg) {
 		return false
 	}
-	return strings.Contains(msg, "already exists") || strings.Contains(msg, "已存在")
+	compact := compactErrorMessage(msg)
+	return strings.Contains(msg, "already exists") || strings.Contains(msg, "已存在") || strings.Contains(compact, "alreadyexists")
 }
 
-func buildForwardServiceConfigs(baseName string, forward *forwardRecord, tunnel *tunnelRecord, node *nodeRecord, port int, limiterID *int64, tunnelTLSProtocol bool) []map[string]interface{} {
+func isBindAddressInUseError(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := strings.ToLower(strings.TrimSpace(err.Error()))
+	if msg == "" {
+		return false
+	}
+	return isAddressAlreadyInUseMessage(msg) || strings.Contains(msg, "cannot assign requested address")
+}
+
+func isAddressAlreadyInUseError(err error) bool {
+	if err == nil {
+		return false
+	}
+	return isAddressAlreadyInUseMessage(strings.ToLower(strings.TrimSpace(err.Error())))
+}
+
+func isAddressAlreadyInUseMessage(msg string) bool {
+	if msg == "" {
+		return false
+	}
+	if strings.Contains(msg, "address already in use") {
+		return true
+	}
+	return strings.Contains(compactErrorMessage(msg), "addressalreadyinuse")
+}
+
+func isCannotAssignRequestedAddressError(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := strings.ToLower(strings.TrimSpace(err.Error()))
+	if msg == "" {
+		return false
+	}
+	if strings.Contains(msg, "cannot assign requested address") {
+		return true
+	}
+	return strings.Contains(compactErrorMessage(msg), "cannotassignrequestedaddress")
+}
+
+func compactErrorMessage(msg string) string {
+	msg = strings.TrimSpace(msg)
+	if msg == "" {
+		return ""
+	}
+	return strings.Join(strings.Fields(strings.ToLower(msg)), "")
+}
+
+func buildForwardServiceConfigs(baseName string, forward *forwardRecord, tunnel *tunnelRecord, node *nodeRecord, port int, bindIP string, limiterID *int64, tunnelTLSProtocol bool) []map[string]interface{} {
 	protocols := []string{"tcp", "udp"}
 	services := make([]map[string]interface{}, 0, 2)
 	targets := splitRemoteTargets(forward.RemoteAddr)
@@ -1317,9 +1559,19 @@ func buildForwardServiceConfigs(baseName string, forward *forwardRecord, tunnel
 		if protocol == "udp" {
 			listenerAddr = node.UDPListenAddr
 		}
+		var serviceAddr string
+		if bindIP != "" {
+			if strings.Contains(bindIP, ":") {
+				serviceAddr = processServerAddress(bindIP)
+			} else {
+				serviceAddr = processServerAddress(fmt.Sprintf("%s:%d", bindIP, port))
+			}
+		} else {
+			serviceAddr = processServerAddress(fmt.Sprintf("%s:%d", listenerAddr, port))
+		}
 		service := map[string]interface{}{
 			"name": fmt.Sprintf("%s_%s", baseName, protocol),
-			"addr": fmt.Sprintf("%s:%d", listenerAddr, port),
+			"addr": serviceAddr,
 			"handler": map[string]interface{}{
 				"type": protocol,
 			},
@@ -1369,13 +1621,21 @@ func buildForwarderNodes(targets []string) []map[string]interface{} {
 }
 
 func processServerAddress(serverAddr string) string {
-	serverAddr = strings.TrimSpace(serverAddr)
+	serverAddr = normalizeServerAddressInput(serverAddr)
 	if serverAddr == "" {
 		return serverAddr
 	}
 	if strings.HasPrefix(serverAddr, "[") {
 		return serverAddr
 	}
+	// If the input is a bare IPv6 host (no port), bracket it.
+	// IPv6-with-port must be provided in bracket form: [::1]:443.
+	if looksLikeIPv6(serverAddr) {
+		if ip := net.ParseIP(serverAddr); ip != nil && ip.To4() == nil {
+			return "[" + serverAddr + "]"
+		}
+	}
+
 	idx := strings.LastIndex(serverAddr, ":")
 	if idx < 0 {
 		if looksLikeIPv6(serverAddr) {
@@ -1394,6 +1654,27 @@ func processServerAddress(serverAddr string) string {
 	return serverAddr
 }
 
+func normalizeServerAddressInput(serverAddr string) string {
+	serverAddr = strings.TrimSpace(serverAddr)
+	if serverAddr == "" {
+		return serverAddr
+	}
+
+	if idx := strings.Index(serverAddr, "://"); idx > 0 {
+		if parsed, err := url.Parse(serverAddr); err == nil {
+			if host := strings.TrimSpace(parsed.Host); host != "" {
+				return host
+			}
+		}
+		serverAddr = serverAddr[idx+3:]
+	}
+
+	if idx := strings.IndexAny(serverAddr, "/?#"); idx >= 0 {
+		serverAddr = serverAddr[:idx]
+	}
+	return strings.TrimSpace(serverAddr)
+}
+
 func looksLikeIPv6(address string) bool {
 	return strings.Count(address, ":") >= 2
 }

go-backend/internal/http/handler/control_plane_test.go

@@ -1,8 +1,11 @@
 package handler
 
 import (
+	"errors"
 	"reflect"
 	"testing"
+
+	"go-backend/internal/store/repo"
 )
 
 func TestBuildForwardControlServiceNamesPauseResume(t *testing.T) {
@@ -42,6 +45,20 @@ func TestBuildForwardServiceBaseCandidatesWithZeroPreferred(t *testing.T) {
 	}
 }
 
+func TestBuildForwardServiceBaseWithResolvedUserTunnel(t *testing.T) {
+	got := buildForwardServiceBaseWithResolvedUserTunnel(12, 34, 56)
+	if got != "12_34_56" {
+		t.Fatalf("expected 12_34_56, got %s", got)
+	}
+}
+
+func TestBuildForwardServiceBaseWithResolvedUserTunnelFallbackToZero(t *testing.T) {
+	got := buildForwardServiceBaseWithResolvedUserTunnel(12, 34, 0)
+	if got != "12_34_0" {
+		t.Fatalf("expected 12_34_0, got %s", got)
+	}
+}
+
 func TestShouldTryLegacySingleService(t *testing.T) {
 	if !shouldTryLegacySingleService("PauseService") {
 		t.Fatalf("PauseService should require legacy fallback")
@@ -54,6 +71,184 @@ func TestShouldTryLegacySingleService(t *testing.T) {
 	}
 }
 
+func TestShouldSelfHealForwardServiceControl(t *testing.T) {
+	if !shouldSelfHealForwardServiceControl("PauseService") {
+		t.Fatalf("PauseService should trigger self-heal")
+	}
+	if !shouldSelfHealForwardServiceControl(" resumeService ") {
+		t.Fatalf("ResumeService should trigger self-heal")
+	}
+	if shouldSelfHealForwardServiceControl("DeleteService") {
+		t.Fatalf("DeleteService should not trigger self-heal")
+	}
+}
+
+func TestControlForwardServiceCommandHandledOnKnownVariant(t *testing.T) {
+	bases := []string{"12_34_56"}
+	called := make([]string, 0)
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		called = append(called, name)
+		if name == "12_34_56_udp" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !handled {
+		t.Fatalf("expected handled=true")
+	}
+	if lastNotFoundErr != nil {
+		t.Fatalf("expected lastNotFoundErr=nil when handled")
+	}
+	wantCalls := []string{"12_34_56_tcp", "12_34_56_udp", "12_34_56"}
+	if !reflect.DeepEqual(called, wantCalls) {
+		t.Fatalf("expected calls %v, got %v", wantCalls, called)
+	}
+}
+
+func TestControlForwardServiceCommandReturnsLastNotFoundWhenAllMissing(t *testing.T) {
+	bases := []string{"12_34_56"}
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if handled {
+		t.Fatalf("expected handled=false")
+	}
+	if lastNotFoundErr == nil {
+		t.Fatalf("expected lastNotFoundErr when all variants are missing")
+	}
+}
+
+func TestDeleteForwardServiceCandidatesSkipsNotFoundUntilLegacyMatch(t *testing.T) {
+	bases := []string{"12_34_56", "12_34_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		if name == "12_34_0" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	wantCalls := []string{"12_34_56_tcp", "12_34_56_udp", "12_34_56", "12_34_0_tcp", "12_34_0_udp", "12_34_0"}
+	if !reflect.DeepEqual(called, wantCalls) {
+		t.Fatalf("expected calls %v, got %v", wantCalls, called)
+	}
+}
+
+func TestDeleteForwardServiceCandidatesTreatsAllMissingAsSuccess(t *testing.T) {
+	bases := []string{"12_34_56", "12_34_0"}
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("all-missing delete should be tolerated, got %v", err)
+	}
+}
+
+func TestForwardServiceBaseCandidatesIncludesResolvedAndLegacyZero(t *testing.T) {
+	bases := buildForwardServiceBaseCandidates(46, 9, 123, []int64{123, 77, 0})
+	want := []string{"46_9_123", "46_9_77", "46_9_0"}
+	if !reflect.DeepEqual(bases, want) {
+		t.Fatalf("expected %v, got %v", want, bases)
+	}
+}
+
+func TestDeleteForwardServiceBasesOnNodeRetriesLegacyZeroResidue(t *testing.T) {
+	bases := []string{"46_9_123", "46_9_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		if name == "46_9_0_tcp" || name == "46_9_0_udp" {
+			return nil
+		}
+		return errors.New("service " + name + " not found")
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	want := []string{"46_9_123_tcp", "46_9_123_udp", "46_9_123", "46_9_0_tcp", "46_9_0_udp", "46_9_0"}
+	if !reflect.DeepEqual(called, want) {
+		t.Fatalf("expected calls %v, got %v", want, called)
+	}
+}
+
+func TestDeleteForwardServiceCandidatesDeletesAllMatchingVariants(t *testing.T) {
+	bases := []string{"57_7_7", "57_7_0"}
+	called := make([]string, 0)
+	err := deleteForwardServiceCandidates(bases, func(name string) error {
+		called = append(called, name)
+		switch name {
+		case "57_7_7_tcp", "57_7_7_udp", "57_7_0_tcp", "57_7_0_udp":
+			return nil
+		default:
+			return errors.New("service " + name + " not found")
+		}
+	})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	want := []string{"57_7_7_tcp", "57_7_7_udp", "57_7_7", "57_7_0_tcp", "57_7_0_udp", "57_7_0"}
+	if !reflect.DeepEqual(called, want) {
+		t.Fatalf("expected calls %v, got %v", want, called)
+	}
+}
+
+func TestValidateForwardPortAvailabilityRejectsOtherForwardOccupancy(t *testing.T) {
+	h := &Handler{repo: nil}
+	node := &nodeRecord{ID: 9, Name: "test-node"}
+	_ = h
+	_ = node
+
+	rawRepo, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	h = &Handler{repo: rawRepo}
+	if err := rawRepo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(1, 9, 2000)`).Error; err != nil {
+		t.Fatalf("insert forward port: %v", err)
+	}
+
+	err = h.validateForwardPortAvailability(&nodeRecord{ID: 9, Name: "test-node"}, 2000, 2)
+	if err == nil {
+		t.Fatalf("expected occupancy error")
+	}
+	if err.Error() != "节点 test-node 端口 2000 已被其他转发占用" {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	err = h.validateForwardPortAvailability(&nodeRecord{ID: 9, Name: "test-node"}, 2000, 1)
+	if err != nil {
+		t.Fatalf("same forward should be allowed, got %v", err)
+	}
+}
+
+func TestControlForwardServiceCommandReturnsHardError(t *testing.T) {
+	bases := []string{"12_34_56"}
+	handled, lastNotFoundErr, err := controlForwardServiceCommand(bases, "PauseService", func(name string) error {
+		if name == "12_34_56_tcp" {
+			return errors.New("network timeout")
+		}
+		return nil
+	})
+	if err == nil {
+		t.Fatalf("expected hard error")
+	}
+	if handled {
+		t.Fatalf("expected handled=false on hard error")
+	}
+	if lastNotFoundErr != nil {
+		t.Fatalf("did not expect not-found error alongside hard error")
+	}
+}
+
 func TestIsAlreadyExistsMessage(t *testing.T) {
 	if !isAlreadyExistsMessage("service demo already exists") {
 		t.Fatalf("expected already exists message to be tolerated")
@@ -61,7 +256,232 @@ func TestIsAlreadyExistsMessage(t *testing.T) {
 	if !isAlreadyExistsMessage("服务已存在") {
 		t.Fatalf("expected Chinese already exists message to be tolerated")
 	}
+	if !isAlreadyExistsMessage("service demo alreadyexists") {
+		t.Fatalf("missing-space alreadyexists should be tolerated")
+	}
 	if isAlreadyExistsMessage("listen tcp [::]:10001: bind: address already in use") {
 		t.Fatalf("address already in use must not be treated as already exists")
 	}
+	if isAlreadyExistsMessage("create service 57_7_7_tcp failed: listen tcp4 0.0.0.0:46222: bind: address alreadyin use") {
+		t.Fatalf("alreadyin-use variant must not be treated as already exists")
+	}
+}
+
+func TestIsBindAddressInUseError(t *testing.T) {
+	if !isBindAddressInUseError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should be detected")
+	}
+	if !isBindAddressInUseError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should be detected")
+	}
+	if isBindAddressInUseError(errors.New("service demo already exists")) {
+		t.Fatalf("already exists should not be treated as bind conflict")
+	}
+	if isBindAddressInUseError(nil) {
+		t.Fatalf("nil error should not be treated as bind conflict")
+	}
+}
+
+func TestIsAddressAlreadyInUseError(t *testing.T) {
+	if !isAddressAlreadyInUseError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should be detected")
+	}
+	if !isAddressAlreadyInUseError(errors.New("create service 57_7_7_tcp failed: listen tcp4 0.0.0.0:46222: bind: address alreadyin use")) {
+		t.Fatalf("missing-space alreadyin-use variant should be detected")
+	}
+	if isAddressAlreadyInUseError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should not be treated as address-in-use")
+	}
+}
+
+func TestIsCannotAssignRequestedAddressError(t *testing.T) {
+	if !isCannotAssignRequestedAddressError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannot assign requested address")) {
+		t.Fatalf("cannot assign requested address should be detected")
+	}
+	if !isCannotAssignRequestedAddressError(errors.New("listen tcp4 13.228.170.187:16765: bind: cannotassignrequestedaddress")) {
+		t.Fatalf("missing-space cannotassignrequestedaddress variant should be detected")
+	}
+	if isCannotAssignRequestedAddressError(errors.New("listen tcp [::]:10001: bind: address already in use")) {
+		t.Fatalf("address already in use should not be treated as cannot-assign")
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupRetriesOnAddressInUse(t *testing.T) {
+	addCalls := 0
+	cleanupCalls := 0
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			addCalls++
+			if addCalls == 1 {
+				return errors.New("listen tcp 10.0.0.1:32000: bind: address already in use")
+			}
+			return nil
+		},
+		func() error {
+			cleanupCalls++
+			return nil
+		},
+		0,
+	)
+	if err != nil {
+		t.Fatalf("expected retry to succeed, got %v", err)
+	}
+	if addCalls != 2 {
+		t.Fatalf("expected 2 add attempts, got %d", addCalls)
+	}
+	if cleanupCalls != 1 {
+		t.Fatalf("expected 1 cleanup attempt, got %d", cleanupCalls)
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupSkipsCleanupOnNonBindError(t *testing.T) {
+	addCalls := 0
+	cleanupCalls := 0
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			addCalls++
+			return errors.New("network timeout")
+		},
+		func() error {
+			cleanupCalls++
+			return nil
+		},
+		0,
+	)
+	if err == nil {
+		t.Fatalf("expected hard error")
+	}
+	if addCalls != 1 {
+		t.Fatalf("expected 1 add attempt, got %d", addCalls)
+	}
+	if cleanupCalls != 0 {
+		t.Fatalf("expected 0 cleanup attempts, got %d", cleanupCalls)
+	}
+}
+
+func TestRetryTunnelServiceAddWithCleanupReturnsCleanupError(t *testing.T) {
+	cleanupErr := errors.New("delete failed")
+	err := retryTunnelServiceAddWithCleanup(
+		func() error {
+			return errors.New("listen tcp 10.0.0.1:32000: bind: address already in use")
+		},
+		func() error {
+			return cleanupErr
+		},
+		0,
+	)
+	if !errors.Is(err, cleanupErr) {
+		t.Fatalf("expected cleanup error %v, got %v", cleanupErr, err)
+	}
+}
+
+func TestBuildForwardServiceConfigs_UsesBindIPForListen(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "[::]", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22000, "10.9.8.7", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	for _, svc := range services {
+		addr, _ := svc["addr"].(string)
+		if addr != "10.9.8.7:22000" {
+			t.Fatalf("expected bind IP address 10.9.8.7:22000, got %q", addr)
+		}
+	}
+}
+
+func TestBuildForwardServiceConfigs_DefaultListenAddrWhenBindIPEmpty(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "0.0.0.0", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22001, "", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	tcpAddr, _ := services[0]["addr"].(string)
+	udpAddr, _ := services[1]["addr"].(string)
+	if tcpAddr != "0.0.0.0:22001" {
+		t.Fatalf("expected tcp addr 0.0.0.0:22001, got %q", tcpAddr)
+	}
+	if udpAddr != "[::]:22001" {
+		t.Fatalf("expected udp addr [::]:22001, got %q", udpAddr)
+	}
+}
+func TestBuildForwardServiceConfigs_BindIPAlreadyContainsPort(t *testing.T) {
+	forward := &forwardRecord{RemoteAddr: "1.2.3.4:80", Strategy: "fifo", TunnelID: 7}
+	node := &nodeRecord{TCPListenAddr: "[::]", UDPListenAddr: "[::]"}
+	services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 55555, "3.3.3.3:12345", nil, false)
+	if len(services) != 2 {
+		t.Fatalf("expected 2 services, got %d", len(services))
+	}
+	for _, svc := range services {
+		addr, _ := svc["addr"].(string)
+		if addr != "3.3.3.3:12345" {
+			t.Fatalf("expected bind IP with port 3.3.3.3:12345, got %q", addr)
+		}
+	}
+}
+
+func TestProcessServerAddress_StripsURLSchemeAndPath(t *testing.T) {
+	tests := []struct {
+		name string
+		in   string
+		want string
+	}{
+		{
+			name: "https with path",
+			in:   "https://panel.example.com:8443/api/v1",
+			want: "panel.example.com:8443",
+		},
+		{
+			name: "wss with query",
+			in:   "wss://panel.example.com:443/system-info?x=1",
+			want: "panel.example.com:443",
+		},
+		{
+			name: "http without port",
+			in:   "http://panel.example.com",
+			want: "panel.example.com",
+		},
+		{
+			name: "manual host with trailing path",
+			in:   "panel.example.com:8080/path",
+			want: "panel.example.com:8080",
+		},
+	}
+
+	for _, tt := range tests {
+		if got := processServerAddress(tt.in); got != tt.want {
+			t.Fatalf("%s: expected %q, got %q", tt.name, tt.want, got)
+		}
+	}
+}
+
+func TestProcessServerAddress_NormalizesIPv6(t *testing.T) {
+	tests := []struct {
+		name string
+		in   string
+		want string
+	}{
+		{
+			name: "ipv6 host only",
+			in:   "2001:db8::1",
+			want: "[2001:db8::1]",
+		},
+		{
+			name: "ipv6 host and port",
+			in:   "https://[2001:db8::1]:8443/path",
+			want: "[2001:db8::1]:8443",
+		},
+		{
+			name: "already bracketed",
+			in:   "[2001:db8::2]:9000",
+			want: "[2001:db8::2]:9000",
+		},
+	}
+
+	for _, tt := range tests {
+		if got := processServerAddress(tt.in); got != tt.want {
+			t.Fatalf("%s: expected %q, got %q", tt.name, tt.want, got)
+		}
+	}
 }

go-backend/internal/http/handler/dual_stack_test.go

@@ -8,9 +8,100 @@ import (
 // nodeSupportsV4 / nodeSupportsV6
 // ---------------------------------------------------------------------------
 
-func TestNodeSupportsV4_Nil(t *testing.T) {
-	if nodeSupportsV4(nil) {
-		t.Fatal("nil node must not support v4")
+func TestSelectTunnelDialHost_ConnectIpPriority(t *testing.T) {
+	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
+	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
+
+	// Empty connectIp should be ignored, IP preference takes effect
+	host, err := selectTunnelDialHost(from, to, "", "")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "10.0.0.2" {
+		t.Fatalf("empty connectIp should be ignored (v4 preference applies), got %q", host)
+	}
+	// Non-empty connectIp should override IP preference
+	host, err = selectTunnelDialHost(from, to, "v6", "192.168.0.3")
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if host != "192.168.0.3" {
+		t.Fatalf("connectIp should override v6 preference, got %q", host)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_UsesConnectIPForListen(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21000, ConnectIP: "2001:db8::88"}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "[2001:db8::88]:21000" {
+		t.Fatalf("expected connectIp listen [2001:db8::88]:21000, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_FallsBackToNodeListenAddr(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "10.8.0.5"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21002}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "10.8.0.5:21002" {
+		t.Fatalf("expected node listen addr 10.8.0.5:21002, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_DefaultListenAddrWhenConnectIPEmpty(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	addr, _ := services[0]["addr"].(string)
+	if addr != "[::]:21001" {
+		t.Fatalf("expected default listen [::]:21001, got %q", addr)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_SetsRetriesWhenMultipleCandidates(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 3)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	handler, _ := services[0]["handler"].(map[string]interface{})
+	if handler == nil {
+		t.Fatal("expected handler config")
+	}
+	retries, ok := handler["retries"].(int)
+	if !ok {
+		t.Fatal("expected retries to be set when nextHopCandidateCount > 1")
+	}
+	if retries != 2 {
+		t.Fatalf("expected retries=2 (candidates-1), got %d", retries)
+	}
+}
+
+func TestBuildTunnelChainServiceConfig_NoRetriesWhenSingleCandidate(t *testing.T) {
+	node := &nodeRecord{TCPListenAddr: "[::]"}
+	chain := tunnelRuntimeNode{Protocol: "tls", Port: 21001}
+	services := buildTunnelChainServiceConfig(99, chain, node, 1)
+	if len(services) != 1 {
+		t.Fatalf("expected 1 service, got %d", len(services))
+	}
+	handler, _ := services[0]["handler"].(map[string]interface{})
+	if handler == nil {
+		t.Fatal("expected handler config")
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatal("expected no retries when nextHopCandidateCount is 1")
 	}
 }
 
@@ -23,14 +114,14 @@ func TestNodeSupportsV6_Nil(t *testing.T) {
 func TestNodeSupportsV4_ExplicitV4(t *testing.T) {
 	n := &nodeRecord{ServerIPv4: "10.0.0.1"}
 	if !nodeSupportsV4(n) {
-		t.Fatal("explicit server_ip_v4 must support v4")
+		t.Fatal("explicit server_ip_v4 needs support v4")
 	}
 }
 
 func TestNodeSupportsV6_ExplicitV6(t *testing.T) {
 	n := &nodeRecord{ServerIPv6: "2001:db8::1"}
 	if !nodeSupportsV6(n) {
-		t.Fatal("explicit server_ip_v6 must support v6")
+		t.Fatal("explicit server_ip_v6 needs support v6")
 	}
 }
 
@@ -68,7 +159,7 @@ func TestNodeSupportsV4_LegacyV4Only(t *testing.T) {
 		t.Fatal("legacy v4 ip in server_ip must support v4")
 	}
 	if nodeSupportsV6(n) {
-		t.Fatal("legacy v4 ip in server_ip must not support v6")
+		t.Fatal("legacy v4 ip in server_ip should not support v6")
 	}
 }
 
@@ -78,7 +169,7 @@ func TestNodeSupportsV6_LegacyV6Only(t *testing.T) {
 		t.Fatal("legacy v6 ip in server_ip must support v6")
 	}
 	if nodeSupportsV4(n) {
-		t.Fatal("legacy v6 ip in server_ip must not support v4")
+		t.Fatal("legacy v6 ip in server_ip should not support v4")
 	}
 }
 
@@ -177,15 +268,15 @@ func v6OnlyNode(name, v6 string) *nodeRecord {
 }
 
 func TestSelectTunnelDialHost_NilNodes(t *testing.T) {
-	_, err := selectTunnelDialHost(nil, nil, "")
+	_, err := selectTunnelDialHost(nil, nil, "", "")
 	if err == nil {
 		t.Fatal("expected error for nil nodes")
 	}
-	_, err = selectTunnelDialHost(dualStackNode("a", "1.1.1.1", "::1"), nil, "")
+	_, err = selectTunnelDialHost(dualStackNode("a", "1.1.1.1", "::1"), nil, "", "")
 	if err == nil {
 		t.Fatal("expected error for nil toNode")
 	}
-	_, err = selectTunnelDialHost(nil, dualStackNode("b", "1.1.1.1", "::1"), "")
+	_, err = selectTunnelDialHost(nil, dualStackNode("b", "1.1.1.1", "::1"), "", "")
 	if err == nil {
 		t.Fatal("expected error for nil fromNode")
 	}
@@ -194,8 +285,7 @@ func TestSelectTunnelDialHost_NilNodes(t *testing.T) {
 func TestSelectTunnelDialHost_DualStack_DefaultPreference(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
-	host, err := selectTunnelDialHost(from, to, "")
+	host, err := selectTunnelDialHost(from, to, "", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -208,8 +298,7 @@ func TestSelectTunnelDialHost_DualStack_DefaultPreference(t *testing.T) {
 func TestSelectTunnelDialHost_DualStack_PreferV4(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
-	host, err := selectTunnelDialHost(from, to, "v4")
+	host, err := selectTunnelDialHost(from, to, "v4", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -221,8 +310,7 @@ func TestSelectTunnelDialHost_DualStack_PreferV4(t *testing.T) {
 func TestSelectTunnelDialHost_DualStack_PreferV6(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
-	host, err := selectTunnelDialHost(from, to, "v6")
+	host, err := selectTunnelDialHost(from, to, "v6", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -234,9 +322,8 @@ func TestSelectTunnelDialHost_DualStack_PreferV6(t *testing.T) {
 func TestSelectTunnelDialHost_V4Only_PreferV6Fallback(t *testing.T) {
 	from := v4OnlyNode("from", "10.0.0.1")
 	to := v4OnlyNode("to", "10.0.0.2")
-
 	// User prefers v6, but both nodes are v4-only — should fallback to v4
-	host, err := selectTunnelDialHost(from, to, "v6")
+	host, err := selectTunnelDialHost(from, to, "v6", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -248,9 +335,8 @@ func TestSelectTunnelDialHost_V4Only_PreferV6Fallback(t *testing.T) {
 func TestSelectTunnelDialHost_V6Only_PreferV4Fallback(t *testing.T) {
 	from := v6OnlyNode("from", "2001:db8::1")
 	to := v6OnlyNode("to", "2001:db8::2")
-
 	// User prefers v4, but both nodes are v6-only — should fallback to v6
-	host, err := selectTunnelDialHost(from, to, "v4")
+	host, err := selectTunnelDialHost(from, to, "v4", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -262,8 +348,7 @@ func TestSelectTunnelDialHost_V6Only_PreferV4Fallback(t *testing.T) {
 func TestSelectTunnelDialHost_Incompatible(t *testing.T) {
 	from := v4OnlyNode("from", "10.0.0.1")
 	to := v6OnlyNode("to", "2001:db8::2")
-
-	_, err := selectTunnelDialHost(from, to, "")
+	_, err := selectTunnelDialHost(from, to, "", "")
 	if err == nil {
 		t.Fatal("expected error for incompatible nodes (v4-only -> v6-only)")
 	}
@@ -272,8 +357,7 @@ func TestSelectTunnelDialHost_Incompatible(t *testing.T) {
 func TestSelectTunnelDialHost_Incompatible_Reverse(t *testing.T) {
 	from := v6OnlyNode("from", "2001:db8::1")
 	to := v4OnlyNode("to", "10.0.0.2")
-
-	_, err := selectTunnelDialHost(from, to, "")
+	_, err := selectTunnelDialHost(from, to, "", "")
 	if err == nil {
 		t.Fatal("expected error for incompatible nodes (v6-only -> v4-only)")
 	}
@@ -282,9 +366,8 @@ func TestSelectTunnelDialHost_Incompatible_Reverse(t *testing.T) {
 func TestSelectTunnelDialHost_WhitespacePreference(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
 	// Whitespace should be trimmed, treated as "v6"
-	host, err := selectTunnelDialHost(from, to, "  v6  ")
+	host, err := selectTunnelDialHost(from, to, "  v6  ", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -296,9 +379,8 @@ func TestSelectTunnelDialHost_WhitespacePreference(t *testing.T) {
 func TestSelectTunnelDialHost_MixedStack_FromDualToV4(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := v4OnlyNode("to", "10.0.0.2")
-
 	// v6 preferred, but target only has v4 — should succeed with v4
-	host, err := selectTunnelDialHost(from, to, "v6")
+	host, err := selectTunnelDialHost(from, to, "v6", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -310,9 +392,8 @@ func TestSelectTunnelDialHost_MixedStack_FromDualToV4(t *testing.T) {
 func TestSelectTunnelDialHost_MixedStack_FromDualToV6(t *testing.T) {
 	from := dualStackNode("from", "10.0.0.1", "2001:db8::1")
 	to := v6OnlyNode("to", "2001:db8::2")
-
 	// v4 preferred, but target only has v6 — should succeed with v6
-	host, err := selectTunnelDialHost(from, to, "v4")
+	host, err := selectTunnelDialHost(from, to, "v4", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -324,9 +405,8 @@ func TestSelectTunnelDialHost_MixedStack_FromDualToV6(t *testing.T) {
 func TestSelectTunnelDialHost_MixedStack_FromV4ToDual(t *testing.T) {
 	from := v4OnlyNode("from", "10.0.0.1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
 	// v6 preferred, but from only has v4 — should use v4 (from can only reach v4 of target)
-	host, err := selectTunnelDialHost(from, to, "v6")
+	host, err := selectTunnelDialHost(from, to, "v6", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -338,9 +418,8 @@ func TestSelectTunnelDialHost_MixedStack_FromV4ToDual(t *testing.T) {
 func TestSelectTunnelDialHost_MixedStack_FromV6ToDual(t *testing.T) {
 	from := v6OnlyNode("from", "2001:db8::1")
 	to := dualStackNode("to", "10.0.0.2", "2001:db8::2")
-
 	// v4 preferred, but from only has v6 — should use v6
-	host, err := selectTunnelDialHost(from, to, "v4")
+	host, err := selectTunnelDialHost(from, to, "v4", "")
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -367,7 +446,6 @@ func TestNodeDisplayName_Named(t *testing.T) {
 		t.Fatalf("expected 'hk-node', got %q", got)
 	}
 }
-
 func TestNodeDisplayName_Unnamed(t *testing.T) {
 	n := &nodeRecord{ID: 42}
 	got := nodeDisplayName(n)

go-backend/internal/http/handler/federation.go

@@ -141,6 +141,32 @@ type remoteUsageNodeItem struct {
 	SyncError        string                   `json:"syncError,omitempty"`
 }
 
+func buildFederationServiceConfig(serviceName, addr, protocol, role, chainName string, targetCount int, interfaceName string) map[string]interface{} {
+	service := map[string]interface{}{
+		"name": serviceName,
+		"addr": addr,
+		"handler": map[string]interface{}{
+			"type": "relay",
+		},
+		"listener": map[string]interface{}{
+			"type": protocol,
+		},
+	}
+	if isTLSTunnelProtocol(protocol) {
+		service["handler"].(map[string]interface{})["metadata"] = map[string]interface{}{"nodelay": true}
+	}
+	if role == "middle" {
+		service["handler"].(map[string]interface{})["chain"] = chainName
+		if targetCount > 1 {
+			service["handler"].(map[string]interface{})["retries"] = targetCount - 1
+		}
+	}
+	if role == "exit" && strings.TrimSpace(interfaceName) != "" {
+		service["metadata"] = map[string]interface{}{"interface": interfaceName}
+	}
+	return service
+}
+
 func (h *Handler) federationShareList(w http.ResponseWriter, r *http.Request) {
 	if r.Method != http.MethodPost {
 		response.WriteJSON(w, response.ErrDefault("Invalid method"))
@@ -1096,25 +1122,16 @@ func (h *Handler) federationRuntimeApplyRole(w http.ResponseWriter, r *http.Requ
 		}
 	}
 
-	service := map[string]interface{}{
-		"name": serviceName,
-		"addr": fmt.Sprintf("%s:%d", node.TCPListenAddr, runtime.Port),
-		"handler": map[string]interface{}{
-			"type": "relay",
-		},
-		"listener": map[string]interface{}{
-			"type": protocol,
-		},
-	}
-	if isTLSTunnelProtocol(protocol) {
-		service["handler"].(map[string]interface{})["metadata"] = map[string]interface{}{"nodelay": true}
-	}
-	if req.Role == "middle" {
-		service["handler"].(map[string]interface{})["chain"] = chainName
-	}
-	if req.Role == "exit" && strings.TrimSpace(node.InterfaceName) != "" {
-		service["metadata"] = map[string]interface{}{"interface": node.InterfaceName}
-	}
+	targetCount := len(req.Targets)
+	service := buildFederationServiceConfig(
+		serviceName,
+		fmt.Sprintf("%s:%d", node.TCPListenAddr, runtime.Port),
+		protocol,
+		req.Role,
+		chainName,
+		targetCount,
+		node.InterfaceName,
+	)
 	if _, err := h.sendNodeCommand(share.NodeID, "AddService", []map[string]interface{}{service}, true, false); err != nil {
 		if req.Role == "middle" {
 			_, _ = h.sendNodeCommand(share.NodeID, "DeleteChains", map[string]interface{}{"chain": chainName}, false, true)

go-backend/internal/http/handler/federation_runtime_test.go

@@ -227,6 +227,60 @@ func TestPrepareTunnelCreateStateAllowsOfflineRemoteMiddleNode(t *testing.T) {
 	}
 }
 
+func TestBuildFederationServiceConfig_MiddleRoleWithMultipleTargets_SetsRetries(t *testing.T) {
+	service := buildFederationServiceConfig("svc-middle", ":40000", "tls", "middle", "chain-next", 3, "")
+	handler := service["handler"].(map[string]interface{})
+	if handler["chain"] != "chain-next" {
+		t.Fatalf("expected chain 'chain-next', got %v", handler["chain"])
+	}
+	if handler["retries"] != 2 {
+		t.Fatalf("expected retries 2 for 3 targets, got %v", handler["retries"])
+	}
+}
+
+func TestBuildFederationServiceConfig_MiddleRoleWithSingleTarget_NoRetries(t *testing.T) {
+	service := buildFederationServiceConfig("svc-middle", ":40000", "tls", "middle", "chain-next", 1, "")
+	handler := service["handler"].(map[string]interface{})
+	if handler["chain"] != "chain-next" {
+		t.Fatalf("expected chain 'chain-next', got %v", handler["chain"])
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatalf("expected no retries for single target, got %v", handler["retries"])
+	}
+}
+
+func TestBuildFederationServiceConfig_ExitRole_NoRetriesRegardlessOfTargets(t *testing.T) {
+	service := buildFederationServiceConfig("svc-exit", ":40000", "tls", "exit", "", 3, "eth0")
+	handler := service["handler"].(map[string]interface{})
+	if _, hasChain := handler["chain"]; hasChain {
+		t.Fatalf("expected no chain for exit role, got %v", handler["chain"])
+	}
+	if _, hasRetries := handler["retries"]; hasRetries {
+		t.Fatalf("expected no retries for exit role, got %v", handler["retries"])
+	}
+	metadata := service["metadata"].(map[string]interface{})
+	if metadata["interface"] != "eth0" {
+		t.Fatalf("expected interface 'eth0', got %v", metadata["interface"])
+	}
+}
+
+func TestBuildFederationServiceConfig_TLSTunnelProtocol_SetsNodelay(t *testing.T) {
+	service := buildFederationServiceConfig("svc-tls", ":40000", "tls", "middle", "chain-next", 2, "")
+	handler := service["handler"].(map[string]interface{})
+	meta := handler["metadata"].(map[string]interface{})
+	if meta["nodelay"] != true {
+		t.Fatalf("expected nodelay=true for TLS protocol, got %v", meta["nodelay"])
+	}
+}
+
+func TestBuildFederationServiceConfig_NonTLSProtocol_NoNodelay(t *testing.T) {
+	service := buildFederationServiceConfig("svc-tcp", ":40000", "tcp", "middle", "chain-next", 2, "")
+	handler := service["handler"].(map[string]interface{})
+	if _, hasMeta := handler["metadata"]; hasMeta {
+		t.Fatalf("expected no metadata for non-TLS protocol, got %v", handler["metadata"])
+	}
+}
+
 func TestFederationRuntimeReservePortRejectsWhenShareFlowExceeded(t *testing.T) {
 	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
 	if err != nil {

go-backend/internal/http/handler/flow_policy.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"encoding/json"
+	"errors"
 	"log"
 	"strconv"
 	"strings"
@@ -43,6 +44,9 @@ func (h *Handler) processFlowItem(nodeID int64, item flowItem) {
 	if ok {
 		inFlow, outFlow := h.scaleFlowByTunnel(forwardID, item.D, item.U)
 		_ = h.repo.AddFlow(forwardID, userID, userTunnelID, inFlow, outFlow)
+		if quota, quotaErr := h.repo.AddUserQuotaUsage(userID, inFlow+outFlow, time.Now()); quotaErr == nil {
+			h.enforceUserQuotaIfNeeded(userID, quota)
+		}
 		h.processPeerShareFlowFromForward(forwardID, nodeID, serviceName, item)
 
 		if userTunnelID > 0 {
@@ -327,6 +331,70 @@ func (h *Handler) enforceFlowPolicies(userID int64, userTunnelID int64) {
 	}
 }
 
+func (h *Handler) ensureUserTunnelForwardAllowed(userID int64, tunnelID int64, now int64) error {
+	if h == nil || h.repo == nil {
+		return errors.New("invalid flow policy context")
+	}
+	if userID <= 0 || tunnelID <= 0 {
+		return nil
+	}
+
+	user, err := h.repo.GetUserByID(userID)
+	if err != nil {
+		return err
+	}
+	if user == nil {
+		return errors.New("用户不存在")
+	}
+
+	if user.Status != 1 {
+		return errors.New("账号已禁用")
+	}
+	if user.ExpTime > 0 && user.ExpTime <= now {
+		return errors.New("账号已过期")
+	}
+
+	flowLimit := user.Flow * bytesPerGB
+	current := user.InFlow + user.OutFlow
+	if flowLimit < current {
+		return errors.New("流量已超额，禁止开启转发")
+	}
+	if err := h.ensureUserForwardAllowedByQuota(userID, now); err != nil {
+		return err
+	}
+
+	userTunnelID, _, _, err := h.resolveUserTunnelAndLimiter(userID, tunnelID)
+	if err != nil {
+		return err
+	}
+	if userTunnelID <= 0 {
+		return nil
+	}
+
+	policy, err := h.getUserTunnelPolicy(userTunnelID)
+	if err != nil {
+		return err
+	}
+	if policy == nil {
+		return nil
+	}
+
+	if policy.Status != 1 {
+		return errors.New("该隧道已禁用")
+	}
+	if policy.ExpTime > 0 && policy.ExpTime <= now {
+		return errors.New("该隧道已过期")
+	}
+
+	utFlowLimit := policy.Flow * bytesPerGB
+	utCurrent := policy.InFlow + policy.OutFlow
+	if utCurrent >= utFlowLimit {
+		return errors.New("该隧道流量已超额，禁止开启转发")
+	}
+
+	return nil
+}
+
 func (h *Handler) shouldPauseUser(userID int64, now int64) bool {
 	user, err := h.repo.GetUserByID(userID)
 	if err != nil || user == nil {

go-backend/internal/http/handler/handler.go

@@ -16,17 +16,21 @@ import (
 	"time"
 
 	"go-backend/internal/auth"
+	"go-backend/internal/health"
 	"go-backend/internal/http/middleware"
 	"go-backend/internal/http/response"
+	"go-backend/internal/metrics"
 	"go-backend/internal/security"
 	"go-backend/internal/store/repo"
 	"go-backend/internal/ws"
 )
 
 type Handler struct {
-	repo      *repo.Repository
-	jwtSecret string
-	wsServer  *ws.Server
+	repo        *repo.Repository
+	jwtSecret   string
+	wsServer    *ws.Server
+	metrics     *metrics.IngestionService
+	healthCheck *health.Checker
 
 	captchaMu     sync.Mutex
 	captchaTokens map[string]int64
@@ -38,6 +42,8 @@ type Handler struct {
 
 	upgradeMu              sync.Mutex
 	pendingUpgradeRedeploy map[int64]struct{}
+
+	qualityProber *tunnelQualityProber
 }
 
 type loginRequest struct {
@@ -83,10 +89,32 @@ func New(repo *repo.Repository, jwtSecret string) *Handler {
 		repo:                   repo,
 		jwtSecret:              jwtSecret,
 		wsServer:               ws.NewServer(repo, jwtSecret),
+		metrics:                metrics.NewIngestionService(repo),
+		healthCheck:            nil,
 		captchaTokens:          make(map[string]int64),
 		pendingUpgradeRedeploy: make(map[int64]struct{}),
 	}
+	h.healthCheck = health.NewChecker(repo, h.wsServer)
+	h.qualityProber = newTunnelQualityProber(h)
 	h.wsServer.SetNodeOnlineHook(h.onNodeOnline)
+	h.wsServer.SetNodeMetricHook(func(nodeID int64, info ws.SystemInfo) {
+		metricInfo := metrics.SystemInfo{
+			Uptime:           info.Uptime,
+			BytesReceived:    info.BytesReceived,
+			BytesTransmitted: info.BytesTransmitted,
+			CPUUsage:         info.CPUUsage,
+			MemoryUsage:      info.MemoryUsage,
+			DiskUsage:        info.DiskUsage,
+			Load1:            info.Load1,
+			Load5:            info.Load5,
+			Load15:           info.Load15,
+			TCPConns:         info.TCPConns,
+			UDPConns:         info.UDPConns,
+			NetInSpeed:       info.NetInSpeed,
+			NetOutSpeed:      info.NetOutSpeed,
+		}
+		h.metrics.RecordNodeMetric(nodeID, metricInfo)
+	})
 	return h
 }
 
@@ -101,6 +129,7 @@ func (h *Handler) Register(mux *http.ServeMux) {
 	mux.HandleFunc("/api/v1/user/update", h.userUpdate)
 	mux.HandleFunc("/api/v1/user/delete", h.userDelete)
 	mux.HandleFunc("/api/v1/user/reset", h.userResetFlow)
+	mux.HandleFunc("/api/v1/user/quota/reset", h.userQuotaReset)
 	mux.HandleFunc("/api/v1/user/groups", h.userGroups)
 	mux.HandleFunc("/api/v1/config/get", h.getConfigByName)
 	mux.HandleFunc("/api/v1/config/list", h.getConfigs)
@@ -122,6 +151,7 @@ func (h *Handler) Register(mux *http.ServeMux) {
 	mux.HandleFunc("/api/v1/node/delete", h.nodeDelete)
 	mux.HandleFunc("/api/v1/node/install", h.nodeInstall)
 	mux.HandleFunc("/api/v1/node/update-order", h.nodeUpdateOrder)
+	mux.HandleFunc("/api/v1/node/dismiss-expiry-reminder", h.nodeDismissExpiryReminder)
 	mux.HandleFunc("/api/v1/node/batch-delete", h.nodeBatchDelete)
 	mux.HandleFunc("/api/v1/node/check-status", h.nodeCheckStatus)
 	mux.HandleFunc("/api/v1/node/upgrade", h.nodeUpgrade)
@@ -133,6 +163,10 @@ func (h *Handler) Register(mux *http.ServeMux) {
 	mux.HandleFunc("/api/v1/tunnel/get", h.tunnelGet)
 	mux.HandleFunc("/api/v1/tunnel/update", h.tunnelUpdate)
 	mux.HandleFunc("/api/v1/tunnel/delete", h.tunnelDelete)
+	mux.HandleFunc("/api/v1/tunnel/delete-preview", h.tunnelDeletePreview)
+	mux.HandleFunc("/api/v1/tunnel/delete-with-forwards", h.tunnelDeleteWithForwards)
+	mux.HandleFunc("/api/v1/tunnel/batch-delete-preview", h.tunnelBatchDeletePreview)
+	mux.HandleFunc("/api/v1/tunnel/batch-delete-with-forwards", h.tunnelBatchDeleteWithForwards)
 	mux.HandleFunc("/api/v1/tunnel/diagnose", h.tunnelDiagnose)
 	mux.HandleFunc("/api/v1/tunnel/diagnose/stream", h.tunnelDiagnoseStream)
 	mux.HandleFunc("/api/v1/tunnel/update-order", h.tunnelUpdateOrder)
@@ -194,6 +228,24 @@ func (h *Handler) Register(mux *http.ServeMux) {
 	mux.HandleFunc("/api/v1/announcement/get", h.getAnnouncement)
 	mux.HandleFunc("/api/v1/announcement/update", h.updateAnnouncement)
 
+	mux.HandleFunc("/api/v1/monitor/access", h.monitorAccessHandler)
+	mux.HandleFunc("/api/v1/monitor/nodes/", h.monitorNodeMetricsHandler)
+	mux.HandleFunc("/api/v1/monitor/nodes", h.monitorNodeListHandler)
+	mux.HandleFunc("/api/v1/monitor/tunnels", h.monitorTunnelListHandler)
+	mux.HandleFunc("/api/v1/monitor/tunnels/quality", h.monitorTunnelQualityHandler)
+	mux.HandleFunc("/api/v1/monitor/tunnels/", h.monitorTunnelMetrics)
+	mux.HandleFunc("/api/v1/monitor/services", h.monitorServiceListHandler)
+	mux.HandleFunc("/api/v1/monitor/services/create", h.monitorServiceCreate)
+	mux.HandleFunc("/api/v1/monitor/services/update", h.monitorServiceUpdate)
+	mux.HandleFunc("/api/v1/monitor/services/delete", h.monitorServiceDelete)
+	mux.HandleFunc("/api/v1/monitor/services/run", h.monitorServiceRun)
+	mux.HandleFunc("/api/v1/monitor/services/latest-results", h.monitorServiceLatestResultsHandler)
+	mux.HandleFunc("/api/v1/monitor/services/limits", h.monitorServiceLimitsHandler)
+	mux.HandleFunc("/api/v1/monitor/services/", h.monitorServiceResultsHandler)
+	mux.HandleFunc("/api/v1/monitor/permission/list", h.monitorPermissionList)
+	mux.HandleFunc("/api/v1/monitor/permission/assign", h.monitorPermissionAssign)
+	mux.HandleFunc("/api/v1/monitor/permission/remove", h.monitorPermissionRemove)
+
 	mux.HandleFunc("/flow/test", h.flowTest)
 	mux.HandleFunc("/flow/config", h.flowConfig)
 	mux.HandleFunc("/flow/upload", h.flowUpload)
@@ -571,7 +623,7 @@ func (h *Handler) userTunnelList(w http.ResponseWriter, r *http.Request) {
 			"userId":         t.UserID,
 			"tunnelId":       t.TunnelID,
 			"tunnelName":     t.TunnelName,
-			"status":         1,
+			"status":         t.Status,
 			"flow":           t.Flow,
 			"num":            t.Num,
 			"expTime":        t.ExpTime,
@@ -722,6 +774,8 @@ func (h *Handler) flowUpload(w http.ResponseWriter, r *http.Request) {
 	if err == nil && strings.TrimSpace(raw) != "" {
 		var items []flowItem
 		if json.Unmarshal([]byte(raw), &items) == nil {
+			nowMs := time.Now().UnixMilli()
+			h.recordTunnelMetricsFromFlowItems(node.ID, items, nowMs)
 			for _, item := range items {
 				h.processFlowItem(node.ID, item)
 			}
@@ -1184,6 +1238,21 @@ func nullableNullInt64(v sql.NullInt64) interface{} {
 	return nil
 }
 
+// flowCryptoCache caches AES crypto instances by secret to avoid per-request SHA256+GCM init.
+var flowCryptoCache sync.Map
+
+func getOrCreateFlowCrypto(secret string) *security.AESCrypto {
+	if v, ok := flowCryptoCache.Load(secret); ok {
+		return v.(*security.AESCrypto)
+	}
+	c, err := security.NewAESCrypto(secret)
+	if err != nil {
+		return nil
+	}
+	flowCryptoCache.Store(secret, c)
+	return c
+}
+
 func readAndDecryptFlowBody(body io.ReadCloser, secret string) (string, error) {
 	defer body.Close()
 	raw, err := io.ReadAll(body)
@@ -1204,8 +1273,8 @@ func readAndDecryptFlowBody(body io.ReadCloser, secret string) (string, error) {
 		return text, nil
 	}
 
-	crypto, err := security.NewAESCrypto(secret)
-	if err != nil {
+	crypto := getOrCreateFlowCrypto(secret)
+	if crypto == nil {
 		return text, nil
 	}
 	plain, err := crypto.Decrypt(wrap.Data)

go-backend/internal/http/handler/jobs.go

@@ -18,11 +18,15 @@ func (h *Handler) StartBackgroundJobs() {
 	ctx, cancel := context.WithCancel(context.Background())
 	h.jobsCancel = cancel
 	h.jobsStarted = true
-	h.jobsWG.Add(2)
+	h.jobsWG.Add(6)
 	h.jobsMu.Unlock()
 
 	go h.runHourlyStatsLoop(ctx)
 	go h.runDailyMaintenanceLoop(ctx)
+	go h.runNodeRenewalCycleLoop(ctx)
+	go h.runMetricsIngestion(ctx)
+	go h.runHealthChecks(ctx)
+	go h.runTunnelQualityProber(ctx)
 }
 
 func (h *Handler) StopBackgroundJobs() {
@@ -46,6 +50,27 @@ func (h *Handler) StopBackgroundJobs() {
 	h.jobsWG.Wait()
 }
 
+func (h *Handler) runMetricsIngestion(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h.metrics != nil {
+		h.metrics.Start(ctx)
+	}
+}
+
+func (h *Handler) runHealthChecks(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h.healthCheck != nil {
+		h.healthCheck.Start(ctx)
+	}
+}
+
+func (h *Handler) runTunnelQualityProber(ctx context.Context) {
+	defer h.jobsWG.Done()
+	if h.qualityProber != nil {
+		h.qualityProber.Start(ctx)
+	}
+}
+
 func (h *Handler) runHourlyStatsLoop(ctx context.Context) {
 	defer h.jobsWG.Done()
 
@@ -135,6 +160,7 @@ func (h *Handler) runResetAndExpiryJob(now time.Time) {
 	}
 
 	h.resetMonthlyFlow(now)
+	h.resetUserQuotaWindows(now)
 	h.disableExpiredUsers(now.UnixMilli())
 	h.disableExpiredUserTunnels(now.UnixMilli())
 }
@@ -176,3 +202,39 @@ func (h *Handler) disableExpiredUserTunnels(nowMs int64) {
 		_ = h.repo.DisableUserTunnel(item.ID)
 	}
 }
+
+func (h *Handler) runNodeRenewalCycleLoop(ctx context.Context) {
+	defer h.jobsWG.Done()
+
+	for {
+		wait := durationUntilNextNodeRenewalCycle(time.Now())
+		timer := time.NewTimer(wait)
+		select {
+		case <-ctx.Done():
+			if !timer.Stop() {
+				<-timer.C
+			}
+			return
+		case <-timer.C:
+			h.runNodeRenewalCycleJob(time.Now())
+		}
+	}
+}
+
+func durationUntilNextNodeRenewalCycle(now time.Time) time.Duration {
+	next := now.Truncate(6 * time.Hour).Add(6 * time.Hour)
+	return next.Sub(now)
+}
+
+func (h *Handler) runNodeRenewalCycleJob(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	advanced, err := h.repo.AdvanceNodeRenewalCycles(now.UnixMilli())
+	if err != nil {
+		return
+	}
+
+	_ = advanced
+}

go-backend/internal/http/handler/jobs_renewal_test.go

@@ -0,0 +1,55 @@
+package handler
+
+import (
+	"database/sql"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestRunNodeRenewalCycleJob_AdvancesOverdueAnchorTimes(t *testing.T) {
+	dbPath := t.TempDir() + "/renewal-test.db"
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = r.Close()
+	})
+
+	now := time.Date(2026, 3, 8, 12, 0, 0, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	nodeID := int64(101)
+	err = r.DB().Exec(`
+		INSERT INTO node (id, name, secret, server_ip, port, http, tls, socks, created_time, status, renewal_cycle, expiry_time)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, nodeID, "no-cycle-node", "test-secret", "192.168.1.1", "1000-65535", 1, 1, 1, nowMs, 1, "", nil).Error
+	if err != nil {
+		t.Fatalf("insert test node: %v", err)
+	}
+
+	quarterNodeID := int64(102)
+	err = r.DB().Exec(`
+		INSERT INTO node (id, name, secret, server_ip, port, http, tls, socks, created_time, status, renewal_cycle, expiry_time)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, quarterNodeID, "quarter-node", "test-secret", "192.168.1.1", "1000-65535", 1, 1, 1, nowMs, 1, "quarter", now.AddDate(0, -4, 0).UnixMilli()).Error
+	if err != nil {
+		t.Fatalf("insert test node: %v", err)
+	}
+
+	h := &Handler{repo: r}
+	h.runNodeRenewalCycleJob(now)
+
+	var anchor sql.NullInt64
+	err = r.DB().Raw(`SELECT expiry_time FROM node WHERE id = ?`, quarterNodeID).Row().Scan(&anchor)
+	if err != nil {
+		t.Fatalf("query expiry_time: %v", err)
+	}
+
+	expectedAnchor := now.AddDate(0, 2, 0).UnixMilli()
+	if !anchor.Valid || anchor.Int64 != expectedAnchor {
+		t.Fatalf("expected anchor %d (2026-05-08), got %d", expectedAnchor, anchor.Int64)
+	}
+}

go-backend/internal/http/handler/jobs_test.go

@@ -143,3 +143,40 @@ func TestRunResetAndExpiryJobResetsFlowAndDisablesExpiredRecords(t *testing.T) {
 		t.Fatalf("expected non-expiring forward to remain enabled, got status=%d", nonExpForwardStatus)
 	}
 }
+
+func TestRunResetAndExpiryJobResetsUserQuotaAndUnblocksUser(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "jobs-quota-reset.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Date(2026, 3, 12, 0, 0, 5, 0, time.UTC)
+	nowMs := now.UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'quota-reset-user', 'x', 1, 0, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO user_quota(user_id, daily_limit_gb, monthly_limit_gb, daily_used_bytes, monthly_used_bytes, day_key, month_key, disabled_by_quota, disabled_at, paused_forward_ids, created_time, updated_time)
+		VALUES(2, 10, 0, ?, ?, 20260311, 202603, 1, ?, '', ?, ?)
+	`, 11*int64(1024*1024*1024), 11*int64(1024*1024*1024), nowMs, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user quota: %v", err)
+	}
+
+	h.runResetAndExpiryJob(now)
+
+	dailyUsed := mustQueryInt(t, r, `SELECT daily_used_bytes FROM user_quota WHERE user_id = 2`)
+	if dailyUsed != 0 {
+		t.Fatalf("expected daily quota usage reset, got %d", dailyUsed)
+	}
+	quotaDisabled := mustQueryInt(t, r, `SELECT disabled_by_quota FROM user_quota WHERE user_id = 2`)
+	if quotaDisabled != 0 {
+		t.Fatalf("expected quota disabled flag cleared, got %d", quotaDisabled)
+	}
+}

go-backend/internal/http/handler/monitoring.go

@@ -0,0 +1,927 @@
+package handler
+
+import (
+	"log"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"go-backend/internal/http/response"
+	"go-backend/internal/monitoring"
+	"go-backend/internal/store/model"
+)
+
+const (
+	defaultMetricsRangeMs = int64(60 * 60 * 1000)      // 1h
+	maxMetricsRangeMs     = int64(24 * 60 * 60 * 1000) // 24h
+)
+
+func (h *Handler) resolveServiceMonitorLimits() monitoring.ServiceMonitorLimits {
+	defaults := monitoring.DefaultServiceMonitorLimits()
+	if h == nil || h.repo == nil {
+		return defaults
+	}
+	cfg, err := h.repo.GetConfigsByNames([]string{
+		monitoring.ConfigServiceMonitorCheckerScanIntervalSec,
+		monitoring.ConfigServiceMonitorWorkerLimit,
+		monitoring.ConfigServiceMonitorMinIntervalSec,
+		monitoring.ConfigServiceMonitorDefaultIntervalSec,
+		monitoring.ConfigServiceMonitorMinTimeoutSec,
+		monitoring.ConfigServiceMonitorDefaultTimeoutSec,
+		monitoring.ConfigServiceMonitorMaxTimeoutSec,
+	})
+	if err != nil {
+		return defaults
+	}
+	return monitoring.ServiceMonitorLimitsFromConfigMap(cfg)
+}
+
+func (h *Handler) monitorNodeMetricsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	path := r.URL.Path
+	prefix := "/api/v1/monitor/nodes/"
+	if !strings.HasPrefix(path, prefix) {
+		response.WriteJSON(w, response.ErrDefault("无效的路径"))
+		return
+	}
+
+	rest := strings.TrimPrefix(path, prefix)
+	if strings.HasSuffix(rest, "/metrics/latest") {
+		h.handleNodeMetricsLatest(w, r, strings.TrimSuffix(rest, "/metrics/latest"))
+		return
+	}
+	if strings.HasSuffix(rest, "/metrics") {
+		h.handleNodeMetrics(w, r, strings.TrimSuffix(rest, "/metrics"))
+		return
+	}
+
+	response.WriteJSON(w, response.ErrDefault("无效的路径"))
+}
+
+type monitorNodeListItem struct {
+	ID          int64  `json:"id"`
+	Inx         int    `json:"inx"`
+	Name        string `json:"name"`
+	Status      int    `json:"status"`
+	UpdatedTime int64  `json:"updatedTime"`
+}
+
+func (h *Handler) monitorNodeListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	nodes, err := h.repo.ListMonitorNodes()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	items := make([]monitorNodeListItem, 0, len(nodes))
+	for _, n := range nodes {
+		updated := int64(0)
+		if n.UpdatedTime.Valid {
+			updated = n.UpdatedTime.Int64
+		}
+		items = append(items, monitorNodeListItem{
+			ID:          n.ID,
+			Inx:         n.Inx,
+			Name:        n.Name,
+			Status:      n.Status,
+			UpdatedTime: updated,
+		})
+	}
+
+	response.WriteJSON(w, response.OK(items))
+}
+
+type monitorTunnelListItem struct {
+	ID          int64  `json:"id"`
+	Inx         int    `json:"inx"`
+	Name        string `json:"name"`
+	Status      int    `json:"status"`
+	UpdatedTime int64  `json:"updatedTime"`
+}
+
+func (h *Handler) monitorTunnelListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	tunnels, err := h.repo.ListMonitorTunnels()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	items := make([]monitorTunnelListItem, 0, len(tunnels))
+	for _, t := range tunnels {
+		items = append(items, monitorTunnelListItem{
+			ID:          t.ID,
+			Inx:         t.Inx,
+			Name:        t.Name,
+			Status:      t.Status,
+			UpdatedTime: t.UpdatedTime,
+		})
+	}
+
+	response.WriteJSON(w, response.OK(items))
+}
+
+func (h *Handler) handleNodeMetrics(w http.ResponseWriter, r *http.Request, nodeIDStr string) {
+	nodeID, err := strconv.ParseInt(nodeIDStr, 10, 64)
+	if err != nil || nodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的节点ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	metrics, err := h.repo.GetNodeMetrics(nodeID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metrics))
+}
+
+func (h *Handler) handleNodeMetricsLatest(w http.ResponseWriter, _ *http.Request, nodeIDStr string) {
+	nodeID, err := strconv.ParseInt(nodeIDStr, 10, 64)
+	if err != nil || nodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的节点ID"))
+		return
+	}
+
+	metric, err := h.repo.GetLatestNodeMetric(nodeID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if metric == nil {
+		response.WriteJSON(w, response.OK(nil))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metric))
+}
+
+func (h *Handler) monitorTunnelQualityHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	// Try in-memory cache first
+	if h.qualityProber != nil {
+		items := h.qualityProber.GetAll()
+		if len(items) > 0 {
+			response.WriteJSON(w, response.OK(items))
+			return
+		}
+	}
+
+	// Fallback to database (latest per tunnel)
+	qualities, err := h.repo.GetLatestTunnelQualities()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	snapshots := make([]tunnelQualitySnapshot, 0, len(qualities))
+	for _, q := range qualities {
+		snapshots = append(snapshots, tunnelQualitySnapshot{
+			TunnelID:           q.TunnelID,
+			EntryToExitLatency: q.EntryToExitLatency,
+			ExitToBingLatency:  q.ExitToBingLatency,
+			EntryToExitLoss:    q.EntryToExitLoss,
+			ExitToBingLoss:     q.ExitToBingLoss,
+			Success:            q.Success == 1,
+			ErrorMessage:       q.ErrorMessage,
+			Timestamp:          q.Timestamp,
+		})
+	}
+	response.WriteJSON(w, response.OK(snapshots))
+}
+
+// monitorTunnelQualityHistory returns quality probe history for charting.
+// GET /api/v1/monitor/tunnels/{id}/quality?start=...&end=...
+// Mirrors monitorTunnelMetrics / monitorServiceResultsHandler pattern.
+func (h *Handler) monitorTunnelQualityHistory(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	tunnelIDStr := extractPathParam(r.URL.Path, "/api/v1/monitor/tunnels/", "/quality")
+	tunnelID, err := strconv.ParseInt(tunnelIDStr, 10, 64)
+	if err != nil || tunnelID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的隧道ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 || endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	results, err := h.repo.GetTunnelQualityHistory(tunnelID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorTunnelMetrics(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	path := r.URL.Path
+	prefix := "/api/v1/monitor/tunnels/"
+	if !strings.HasPrefix(path, prefix) {
+		response.WriteJSON(w, response.ErrDefault("无效的路径"))
+		return
+	}
+
+	rest := strings.TrimPrefix(path, prefix)
+
+	// Route: /api/v1/monitor/tunnels/{id}/quality
+	if strings.HasSuffix(rest, "/quality") {
+		h.monitorTunnelQualityHistory(w, r)
+		return
+	}
+
+	// Route: /api/v1/monitor/tunnels/{id}/metrics (original)
+	tunnelIDStr := extractPathParam(path, prefix, "/metrics")
+	tunnelID, err := strconv.ParseInt(tunnelIDStr, 10, 64)
+	if err != nil || tunnelID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的隧道ID"))
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	startMs := now - defaultMetricsRangeMs
+	endMs := now
+
+	if s := r.URL.Query().Get("start"); s != "" {
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			startMs = v
+		}
+	}
+	if e := r.URL.Query().Get("end"); e != "" {
+		if v, err := strconv.ParseInt(e, 10, 64); err == nil {
+			endMs = v
+		}
+	}
+	if startMs <= 0 || endMs <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs < startMs {
+		response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+		return
+	}
+	if endMs-startMs > maxMetricsRangeMs {
+		response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+		return
+	}
+
+	metrics, err := h.repo.GetTunnelMetricsAggregated(tunnelID, startMs, endMs)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(metrics))
+}
+
+func (h *Handler) monitorServiceListHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	monitors, err := h.repo.ListServiceMonitors()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(monitors))
+}
+
+type createServiceMonitorRequest struct {
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Target      string `json:"target"`
+	IntervalSec int    `json:"intervalSec"`
+	TimeoutSec  int    `json:"timeoutSec"`
+	NodeID      int64  `json:"nodeId"`
+	Enabled     *int   `json:"enabled"`
+}
+
+func (h *Handler) monitorServiceCreate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req createServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	name := strings.TrimSpace(req.Name)
+	if name == "" {
+		response.WriteJSON(w, response.ErrDefault("名称不能为空"))
+		return
+	}
+
+	monitorType := strings.ToLower(strings.TrimSpace(req.Type))
+	if monitorType != "tcp" && monitorType != "icmp" {
+		response.WriteJSON(w, response.ErrDefault("类型必须是 tcp 或 icmp"))
+		return
+	}
+
+	target := strings.TrimSpace(req.Target)
+	if target == "" {
+		response.WriteJSON(w, response.ErrDefault("目标地址不能为空"))
+		return
+	}
+
+	limits := h.resolveServiceMonitorLimits()
+
+	intervalSec := req.IntervalSec
+	if intervalSec <= 0 {
+		intervalSec = limits.DefaultIntervalSec
+	}
+	if intervalSec < limits.MinIntervalSec {
+		intervalSec = limits.MinIntervalSec
+	}
+
+	timeoutSec := req.TimeoutSec
+	if timeoutSec <= 0 {
+		timeoutSec = limits.DefaultTimeoutSec
+	}
+	if timeoutSec < limits.MinTimeoutSec {
+		timeoutSec = limits.MinTimeoutSec
+	}
+	if timeoutSec > limits.MaxTimeoutSec {
+		timeoutSec = limits.MaxTimeoutSec
+	}
+
+	enabled := 1
+	if req.Enabled != nil {
+		if *req.Enabled == 0 || *req.Enabled == 1 {
+			enabled = *req.Enabled
+		}
+	}
+
+	now := time.Now().UnixMilli()
+	if req.NodeID > 0 {
+		n, err := h.repo.GetNodeByID(req.NodeID)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		if n == nil {
+			response.WriteJSON(w, response.ErrDefault("节点不存在"))
+			return
+		}
+	}
+	m := &model.ServiceMonitor{
+		Name:        name,
+		Type:        monitorType,
+		Target:      target,
+		IntervalSec: intervalSec,
+		TimeoutSec:  timeoutSec,
+		NodeID:      req.NodeID,
+		Enabled:     enabled,
+		CreatedTime: now,
+		UpdatedTime: now,
+	}
+	if m.Type == "icmp" && m.NodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("ICMP 监控必须选择执行节点"))
+		return
+	}
+	// enabled is already normalized above.
+
+	if err := h.repo.CreateServiceMonitor(m); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(m))
+}
+
+type updateServiceMonitorRequest struct {
+	ID          int64  `json:"id"`
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	Target      string `json:"target"`
+	IntervalSec int    `json:"intervalSec"`
+	TimeoutSec  int    `json:"timeoutSec"`
+	NodeID      *int64 `json:"nodeId"`
+	Enabled     *int   `json:"enabled"`
+}
+
+func (h *Handler) monitorServiceUpdate(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req updateServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	existing, err := h.repo.GetServiceMonitor(req.ID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if existing == nil {
+		response.WriteJSON(w, response.ErrDefault("监控不存在"))
+		return
+	}
+
+	name := strings.TrimSpace(req.Name)
+	if name != "" {
+		existing.Name = name
+	}
+
+	monitorType := strings.ToLower(strings.TrimSpace(req.Type))
+	if monitorType == "tcp" || monitorType == "icmp" {
+		existing.Type = monitorType
+	}
+
+	target := strings.TrimSpace(req.Target)
+	if target != "" {
+		existing.Target = target
+	}
+
+	limits := h.resolveServiceMonitorLimits()
+
+	if req.IntervalSec > 0 {
+		intervalSec := req.IntervalSec
+		if intervalSec < limits.MinIntervalSec {
+			intervalSec = limits.MinIntervalSec
+		}
+		existing.IntervalSec = intervalSec
+	}
+	if req.TimeoutSec > 0 {
+		timeoutSec := req.TimeoutSec
+		if timeoutSec < limits.MinTimeoutSec {
+			timeoutSec = limits.MinTimeoutSec
+		}
+		if timeoutSec > limits.MaxTimeoutSec {
+			timeoutSec = limits.MaxTimeoutSec
+		}
+		existing.TimeoutSec = timeoutSec
+	}
+
+	if req.NodeID != nil {
+		existing.NodeID = *req.NodeID
+	}
+	if req.Enabled != nil {
+		if *req.Enabled == 0 || *req.Enabled == 1 {
+			existing.Enabled = *req.Enabled
+		}
+	}
+
+	existing.UpdatedTime = time.Now().UnixMilli()
+	if existing.Type == "icmp" && existing.NodeID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("ICMP 监控必须选择执行节点"))
+		return
+	}
+	if existing.NodeID > 0 {
+		n, err := h.repo.GetNodeByID(existing.NodeID)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		if n == nil {
+			response.WriteJSON(w, response.ErrDefault("节点不存在"))
+			return
+		}
+	}
+
+	if err := h.repo.UpdateServiceMonitor(existing); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(existing))
+}
+
+type deleteServiceMonitorRequest struct {
+	ID int64 `json:"id"`
+}
+
+func (h *Handler) monitorServiceDelete(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	var req deleteServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	if err := h.repo.DeleteServiceMonitor(req.ID); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) monitorServiceRun(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+	if h.healthCheck == nil {
+		response.WriteJSON(w, response.ErrDefault("监控服务不可用"))
+		return
+	}
+
+	var req deleteServiceMonitorRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	m, err := h.repo.GetServiceMonitor(req.ID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if m == nil {
+		response.WriteJSON(w, response.ErrDefault("监控不存在"))
+		return
+	}
+
+	res, err := h.healthCheck.RunOnce(m)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if err := h.repo.InsertServiceMonitorResult(res); err != nil {
+		log.Printf("monitoring write failed op=service_monitor_result.manual_insert monitor_id=%d err=%v", res.MonitorID, err)
+	}
+	response.WriteJSON(w, response.OK(res))
+}
+
+func (h *Handler) monitorServiceResultsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	monitorIDStr := extractPathParam(r.URL.Path, "/api/v1/monitor/services/", "/results")
+	monitorID, err := strconv.ParseInt(monitorIDStr, 10, 64)
+	if err != nil || monitorID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的监控ID"))
+		return
+	}
+
+	// If start/end time range is provided, use time-based query (mirrors node metrics / tunnel quality pattern).
+	startStr := r.URL.Query().Get("start")
+	endStr := r.URL.Query().Get("end")
+	if startStr != "" && endStr != "" {
+		startMs, err1 := strconv.ParseInt(startStr, 10, 64)
+		endMs, err2 := strconv.ParseInt(endStr, 10, 64)
+		if err1 != nil || err2 != nil || startMs <= 0 || endMs <= 0 || endMs < startMs {
+			response.WriteJSON(w, response.ErrDefault("无效的时间范围"))
+			return
+		}
+		if endMs-startMs > maxMetricsRangeMs {
+			response.WriteJSON(w, response.ErrDefault("时间范围过大"))
+			return
+		}
+		results, err := h.repo.GetServiceMonitorResultsByTimeRange(monitorID, startMs, endMs)
+		if err != nil {
+			response.WriteJSON(w, response.Err(-2, err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.OK(results))
+		return
+	}
+
+	// Fallback: count-based limit query (backward compat).
+	limit := 100
+	if l := r.URL.Query().Get("limit"); l != "" {
+		if v, err := strconv.Atoi(l); err == nil && v > 0 && v <= 1000 {
+			limit = v
+		}
+	}
+
+	results, err := h.repo.GetServiceMonitorResults(monitorID, limit)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorServiceLatestResultsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+
+	results, err := h.repo.GetLatestServiceMonitorResults()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OK(results))
+}
+
+func (h *Handler) monitorServiceLimitsHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureMonitoringAccess(w, r) {
+		return
+	}
+	response.WriteJSON(w, response.OK(h.resolveServiceMonitorLimits()))
+}
+
+func extractPathParam(path, prefix, suffix string) string {
+	if !strings.HasPrefix(path, prefix) {
+		return ""
+	}
+	rest := strings.TrimPrefix(path, prefix)
+	if suffix != "" {
+		rest = strings.TrimSuffix(rest, suffix)
+	}
+	return rest
+}
+
+type monitorAccessData struct {
+	Allowed bool   `json:"allowed"`
+	Reason  string `json:"reason,omitempty"`
+}
+
+// monitorAccessHandler is a lightweight capability check for frontend navigation.
+// It does NOT replace authorization on the actual monitoring endpoints.
+func (h *Handler) monitorAccessHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	userID, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return
+	}
+	if roleID == 0 {
+		response.WriteJSON(w, response.OK(monitorAccessData{Allowed: true}))
+		return
+	}
+
+	allowed, err := h.repo.HasMonitorPermission(userID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	data := monitorAccessData{Allowed: allowed}
+	if !allowed {
+		data.Reason = "need_admin_grant"
+	}
+	response.WriteJSON(w, response.OK(data))
+}
+
+func (h *Handler) ensureAdminAccess(w http.ResponseWriter, r *http.Request) bool {
+	_, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return false
+	}
+	if roleID != 0 {
+		response.WriteJSON(w, response.Err(403, "权限不足，仅管理员可操作"))
+		return false
+	}
+	return true
+}
+
+func (h *Handler) ensureMonitoringAccess(w http.ResponseWriter, r *http.Request) bool {
+	userID, roleID, err := userRoleFromRequest(r)
+	if err != nil {
+		response.WriteJSON(w, response.Err(401, "未登录或token已过期"))
+		return false
+	}
+	if roleID == 0 {
+		return true
+	}
+	allowed, err := h.repo.HasMonitorPermission(userID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return false
+	}
+	if !allowed {
+		response.WriteJSON(w, response.Err(403, "权限不足：当前账户非管理员，且未被授予监控权限。请联系管理员在用户管理中授权监控权限。"))
+		return false
+	}
+	return true
+}
+
+func (h *Handler) monitorPermissionList(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	items, err := h.repo.ListMonitorPermissions()
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OK(items))
+}
+
+type monitorPermissionMutationRequest struct {
+	UserID int64 `json:"userId"`
+}
+
+func (h *Handler) monitorPermissionAssign(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	var req monitorPermissionMutationRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的用户ID"))
+		return
+	}
+
+	u, err := h.repo.GetUserByID(req.UserID)
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if u == nil {
+		response.WriteJSON(w, response.ErrDefault("用户不存在"))
+		return
+	}
+
+	if err := h.repo.InsertMonitorPermission(req.UserID, time.Now().UnixMilli()); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) monitorPermissionRemove(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	if !h.ensureAdminAccess(w, r) {
+		return
+	}
+
+	var req monitorPermissionMutationRequest
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("无效的用户ID"))
+		return
+	}
+
+	if err := h.repo.DeleteMonitorPermission(req.UserID); err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	response.WriteJSON(w, response.OKEmpty())
+}

go-backend/internal/http/handler/mutations_forward_ports_test.go

@@ -0,0 +1,39 @@
+package handler
+
+import "testing"
+
+func TestBuildForwardPortEntriesWithPreservedInIP(t *testing.T) {
+	entryNodeIDs := []int64{10, 20, 30}
+	oldPorts := []forwardPortRecord{
+		{NodeID: 10, Port: 10001, InIP: ""},
+		{NodeID: 10, Port: 10002, InIP: "10.0.0.10"},
+		{NodeID: 20, Port: 10003, InIP: "10.0.0.20"},
+	}
+
+	entries := buildForwardPortEntriesWithPreservedInIP(entryNodeIDs, oldPorts, 18080)
+	if len(entries) != 3 {
+		t.Fatalf("expected 3 entries, got %d", len(entries))
+	}
+
+	if entries[0].NodeID != 10 || entries[0].Port != 18080 || entries[0].InIP != "10.0.0.10" {
+		t.Fatalf("unexpected first entry: %+v", entries[0])
+	}
+	if entries[1].NodeID != 20 || entries[1].Port != 18080 || entries[1].InIP != "10.0.0.20" {
+		t.Fatalf("unexpected second entry: %+v", entries[1])
+	}
+	if entries[2].NodeID != 30 || entries[2].Port != 18080 || entries[2].InIP != "" {
+		t.Fatalf("unexpected third entry: %+v", entries[2])
+	}
+}
+
+func TestBuildForwardPortEntriesWithPreservedInIP_EmptyOldPorts(t *testing.T) {
+	entryNodeIDs := []int64{99}
+	entries := buildForwardPortEntriesWithPreservedInIP(entryNodeIDs, nil, 17000)
+
+	if len(entries) != 1 {
+		t.Fatalf("expected 1 entry, got %d", len(entries))
+	}
+	if entries[0].NodeID != 99 || entries[0].Port != 17000 || entries[0].InIP != "" {
+		t.Fatalf("unexpected entry: %+v", entries[0])
+	}
+}

go-backend/internal/http/handler/reconstruct_tunnel_state_test.go

@@ -0,0 +1,79 @@
+package handler
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestReconstructTunnelState_PreservesConnectIP(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "reconstruct-connect-ip.db")
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() { _ = r.Close() })
+
+	h := New(r, "secret")
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, 'reconstruct-tunnel', 1.0, 2, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	insertNode := func(id int64, name, ip string) {
+		if err := r.DB().Exec(`
+			INSERT INTO node(id, name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, id, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+	}
+
+	insertNode(101, "entry", "10.90.0.10")
+	insertNode(102, "middle", "10.90.0.20")
+	insertNode(103, "exit", "10.90.0.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(1, '1', 101, 30001, 'round', 1, 'tls')
+	`).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(1, '2', 102, 30002, 'round', 1, 'tls', '10.99.9.22')
+	`).Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(1, '3', 103, 30003, 'round', 1, 'tls', '10.99.9.33')
+	`).Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	state, err := h.reconstructTunnelState(1)
+	if err != nil {
+		t.Fatalf("reconstructTunnelState: %v", err)
+	}
+
+	if len(state.ChainHops) != 1 || len(state.ChainHops[0]) != 1 {
+		t.Fatalf("unexpected chain hops: %+v", state.ChainHops)
+	}
+	if got := state.ChainHops[0][0].ConnectIP; got != "10.99.9.22" {
+		t.Fatalf("expected middle connectIp 10.99.9.22, got %q", got)
+	}
+
+	if len(state.OutNodes) != 1 {
+		t.Fatalf("unexpected out nodes: %+v", state.OutNodes)
+	}
+	if got := state.OutNodes[0].ConnectIP; got != "10.99.9.33" {
+		t.Fatalf("expected exit connectIp 10.99.9.33, got %q", got)
+	}
+}

go-backend/internal/http/handler/tunnel_delete_resolution.go

@@ -0,0 +1,655 @@
+package handler
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"go-backend/internal/http/response"
+)
+
+const tunnelDeletePreviewSampleLimit = 5
+
+const (
+	tunnelDeleteActionReplace        = "replace"
+	tunnelDeleteActionDeleteForwards = "delete_forwards"
+)
+
+var (
+	errInvalidTunnelDeleteTarget = errors.New("invalid tunnel delete target")
+)
+
+type tunnelDeleteForwardPreviewItem struct {
+	ID       int64  `json:"id"`
+	Name     string `json:"name"`
+	UserID   int64  `json:"userId"`
+	UserName string `json:"userName"`
+	InPort   int    `json:"inPort"`
+}
+
+type tunnelDeletePreviewData struct {
+	TunnelID       int64                            `json:"tunnelId"`
+	TunnelName     string                           `json:"tunnelName"`
+	ForwardCount   int                              `json:"forwardCount"`
+	SampleForwards []tunnelDeleteForwardPreviewItem `json:"sampleForwards"`
+}
+
+type tunnelBatchDeletePreviewData struct {
+	TunnelCount       int                       `json:"tunnelCount"`
+	TotalForwardCount int                       `json:"totalForwardCount"`
+	Items             []tunnelDeletePreviewData `json:"items"`
+}
+
+type tunnelDeleteWithForwardsRequest struct {
+	ID             int64  `json:"id"`
+	Action         string `json:"action"`
+	TargetTunnelID int64  `json:"targetTunnelId"`
+}
+
+type tunnelBatchDeleteWithForwardsRequest struct {
+	IDs            []int64 `json:"ids"`
+	Action         string  `json:"action"`
+	TargetTunnelID int64   `json:"targetTunnelId"`
+}
+
+type tunnelDeleteWithForwardsResult struct {
+	ForwardCount        int      `json:"forwardCount"`
+	MigratedCount       int      `json:"migratedCount"`
+	DeletedForwardCount int      `json:"deletedForwardCount"`
+	PortAdjustedCount   int      `json:"portAdjustedCount"`
+	Warnings            []string `json:"warnings,omitempty"`
+}
+
+type tunnelBatchDeleteWithForwardsResult struct {
+	SuccessCount        int                  `json:"successCount"`
+	FailCount           int                  `json:"failCount"`
+	Failures            []batchFailureDetail `json:"failures,omitempty"`
+	DeletedForwardCount int                  `json:"deletedForwardCount"`
+	MigratedCount       int                  `json:"migratedCount"`
+	PortAdjustedCount   int                  `json:"portAdjustedCount"`
+	Warnings            []string             `json:"warnings,omitempty"`
+}
+
+type tunnelForwardMigrationPlan struct {
+	forward        *forwardRecord
+	oldPorts       []forwardPortRecord
+	targetTunnelID int64
+	targetPort     int
+	keptNodeIDs    []int64
+	removedNodeIDs []int64
+	portAdjusted   bool
+}
+
+func (h *Handler) tunnelDeletePreview(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	id := idFromBody(r, w)
+	if id <= 0 {
+		return
+	}
+
+	preview, err := h.buildTunnelDeletePreview(id)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(preview))
+}
+
+func (h *Handler) tunnelBatchDeletePreview(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req struct {
+		IDs []int64 `json:"ids"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil || len(req.IDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	preview, err := h.buildTunnelBatchDeletePreview(req.IDs)
+	if err != nil {
+		if strings.Contains(err.Error(), "不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+
+	response.WriteJSON(w, response.OK(preview))
+}
+
+func (h *Handler) tunnelDeleteWithForwards(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req tunnelDeleteWithForwardsRequest
+	if err := decodeJSON(r.Body, &req); err != nil || req.ID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	action, err := normalizeTunnelDeleteAction(req.Action)
+	if err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if action == tunnelDeleteActionReplace {
+		if _, _, authErr := userRoleFromRequest(r); authErr != nil {
+			response.WriteJSON(w, response.Err(401, "无效的token或token已过期"))
+			return
+		}
+	}
+
+	result, failures, err := h.processTunnelDeleteWithForwards(req.ID, action, req.TargetTunnelID)
+	if err != nil {
+		if err == errInvalidTunnelDeleteTarget {
+			response.WriteJSON(w, response.ErrDefault("目标隧道不能为空"))
+			return
+		}
+		if strings.Contains(err.Error(), "目标隧道不能与当前隧道相同") || strings.Contains(err.Error(), "目标隧道不存在") || strings.Contains(err.Error(), "目标隧道已禁用") || strings.Contains(err.Error(), "隧道不存在") {
+			response.WriteJSON(w, response.ErrDefault(err.Error()))
+			return
+		}
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	if len(failures) > 0 {
+		response.WriteJSON(w, response.R{
+			Code: -2,
+			Msg:  "部分规则迁移失败",
+			TS:   time.Now().UnixMilli(),
+			Data: batchOperationResult{SuccessCount: 0, FailCount: len(failures), Failures: failures},
+		})
+		return
+	}
+
+	response.WriteJSON(w, response.OK(result))
+}
+
+func (h *Handler) tunnelBatchDeleteWithForwards(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+
+	var req tunnelBatchDeleteWithForwardsRequest
+	if err := decodeJSON(r.Body, &req); err != nil || len(req.IDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	action, err := normalizeTunnelDeleteAction(req.Action)
+	if err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if action == tunnelDeleteActionReplace {
+		if _, _, authErr := userRoleFromRequest(r); authErr != nil {
+			response.WriteJSON(w, response.Err(401, "无效的token或token已过期"))
+			return
+		}
+	}
+
+	normalizedIDs := normalizeTunnelIDs(req.IDs)
+	if len(normalizedIDs) == 0 {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+
+	if action == tunnelDeleteActionReplace {
+		if req.TargetTunnelID <= 0 {
+			response.WriteJSON(w, response.ErrDefault("目标隧道不能为空"))
+			return
+		}
+		for _, id := range normalizedIDs {
+			if id == req.TargetTunnelID {
+				response.WriteJSON(w, response.ErrDefault("目标隧道不能包含在删除列表中"))
+				return
+			}
+		}
+	}
+
+	result := tunnelBatchDeleteWithForwardsResult{}
+	for _, tunnelID := range normalizedIDs {
+		tunnelName, _ := h.repo.GetTunnelName(tunnelID)
+		singleResult, failures, processErr := h.processTunnelDeleteWithForwards(tunnelID, action, req.TargetTunnelID)
+		if processErr != nil {
+			result.FailCount++
+			result.Failures = appendBatchFailure(result.Failures, tunnelID, tunnelName, processErr)
+			continue
+		}
+		if len(failures) > 0 {
+			result.FailCount++
+			result.Failures = appendBatchFailureReason(
+				result.Failures,
+				tunnelID,
+				tunnelName,
+				summarizeTunnelDeleteRuleFailures(failures),
+			)
+			continue
+		}
+
+		result.SuccessCount++
+		result.DeletedForwardCount += singleResult.DeletedForwardCount
+		result.MigratedCount += singleResult.MigratedCount
+		result.PortAdjustedCount += singleResult.PortAdjustedCount
+		if len(singleResult.Warnings) > 0 {
+			result.Warnings = append(result.Warnings, singleResult.Warnings...)
+		}
+	}
+
+	response.WriteJSON(w, response.OK(result))
+}
+
+func (h *Handler) buildTunnelDeletePreview(tunnelID int64) (*tunnelDeletePreviewData, error) {
+	if _, err := h.getTunnelRecord(tunnelID); err != nil {
+		return nil, err
+	}
+
+	tunnelName, err := h.repo.GetTunnelName(tunnelID)
+	if err != nil {
+		return nil, err
+	}
+
+	forwards, err := h.listForwardsByTunnel(tunnelID)
+	if err != nil {
+		return nil, err
+	}
+
+	samples := make([]tunnelDeleteForwardPreviewItem, 0, minInt(len(forwards), tunnelDeletePreviewSampleLimit))
+	for i, forward := range forwards {
+		if i >= tunnelDeletePreviewSampleLimit {
+			break
+		}
+		ports, portsErr := h.listForwardPorts(forward.ID)
+		if portsErr != nil {
+			return nil, portsErr
+		}
+		inPort := 0
+		if len(ports) > 0 {
+			inPort = ports[0].Port
+		}
+		samples = append(samples, tunnelDeleteForwardPreviewItem{
+			ID:       forward.ID,
+			Name:     forward.Name,
+			UserID:   forward.UserID,
+			UserName: forward.UserName,
+			InPort:   inPort,
+		})
+	}
+
+	return &tunnelDeletePreviewData{
+		TunnelID:       tunnelID,
+		TunnelName:     tunnelName,
+		ForwardCount:   len(forwards),
+		SampleForwards: samples,
+	}, nil
+}
+
+func (h *Handler) buildTunnelBatchDeletePreview(ids []int64) (*tunnelBatchDeletePreviewData, error) {
+	normalizedIDs := normalizeTunnelIDs(ids)
+	items := make([]tunnelDeletePreviewData, 0, len(normalizedIDs))
+	totalForwardCount := 0
+	for _, id := range normalizedIDs {
+		preview, err := h.buildTunnelDeletePreview(id)
+		if err != nil {
+			return nil, err
+		}
+		items = append(items, *preview)
+		totalForwardCount += preview.ForwardCount
+	}
+	return &tunnelBatchDeletePreviewData{
+		TunnelCount:       len(items),
+		TotalForwardCount: totalForwardCount,
+		Items:             items,
+	}, nil
+}
+
+func normalizeTunnelDeleteAction(action string) (string, error) {
+	normalized := strings.TrimSpace(action)
+	if normalized == "" {
+		return tunnelDeleteActionDeleteForwards, nil
+	}
+	if normalized != tunnelDeleteActionReplace && normalized != tunnelDeleteActionDeleteForwards {
+		return "", errors.New("invalid tunnel delete action")
+	}
+	return normalized, nil
+}
+
+func normalizeTunnelIDs(ids []int64) []int64 {
+	seen := make(map[int64]struct{}, len(ids))
+	out := make([]int64, 0, len(ids))
+	for _, id := range ids {
+		if id <= 0 {
+			continue
+		}
+		if _, exists := seen[id]; exists {
+			continue
+		}
+		seen[id] = struct{}{}
+		out = append(out, id)
+	}
+	return out
+}
+
+func summarizeTunnelDeleteRuleFailures(failures []batchFailureDetail) string {
+	if len(failures) == 0 {
+		return "未知错误"
+	}
+	parts := make([]string, 0, minInt(len(failures), 3))
+	for i, failure := range failures {
+		if i >= 3 {
+			break
+		}
+		name := strings.TrimSpace(failure.Name)
+		if name == "" {
+			name = fmt.Sprintf("规则 #%d", failure.ID)
+		}
+		parts = append(parts, fmt.Sprintf("%s: %s", name, strings.TrimSpace(failure.Reason)))
+	}
+	if len(failures) > 3 {
+		parts = append(parts, fmt.Sprintf("另有 %d 条规则失败", len(failures)-3))
+	}
+	return strings.Join(parts, "；")
+}
+
+func (h *Handler) processTunnelDeleteWithForwards(tunnelID int64, action string, targetTunnelID int64) (tunnelDeleteWithForwardsResult, []batchFailureDetail, error) {
+	preview, err := h.buildTunnelDeletePreview(tunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+
+	result := tunnelDeleteWithForwardsResult{ForwardCount: preview.ForwardCount}
+	if preview.ForwardCount == 0 {
+		if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+			return tunnelDeleteWithForwardsResult{}, nil, err
+		}
+		return result, nil, nil
+	}
+
+	if action == tunnelDeleteActionDeleteForwards {
+		result.DeletedForwardCount = preview.ForwardCount
+		if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+			return tunnelDeleteWithForwardsResult{}, nil, err
+		}
+		return result, nil, nil
+	}
+
+	if targetTunnelID <= 0 {
+		return tunnelDeleteWithForwardsResult{}, nil, errInvalidTunnelDeleteTarget
+	}
+	if targetTunnelID == tunnelID {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道不能与当前隧道相同")
+	}
+	return h.processTunnelDeleteReplaceAction(tunnelID, targetTunnelID, result)
+}
+
+func (h *Handler) processTunnelDeleteReplaceAction(tunnelID, targetTunnelID int64, result tunnelDeleteWithForwardsResult) (tunnelDeleteWithForwardsResult, []batchFailureDetail, error) {
+	targetTunnel, err := h.getTunnelRecord(targetTunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道不存在")
+	}
+	if targetTunnel.Status != 1 {
+		return tunnelDeleteWithForwardsResult{}, nil, errors.New("目标隧道已禁用")
+	}
+
+	plans, failures, err := h.planTunnelDeleteForwardMigrations(tunnelID, targetTunnelID)
+	if err != nil {
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+	if len(failures) > 0 {
+		return tunnelDeleteWithForwardsResult{}, failures, nil
+	}
+
+	portAdjustedCount := 0
+	warnings, execErr, execFailure := h.executeTunnelDeleteForwardMigrations(plans)
+	for _, plan := range plans {
+		if plan.portAdjusted {
+			portAdjustedCount++
+		}
+	}
+	if execErr != nil {
+		failures = append(failures, execFailure)
+		return tunnelDeleteWithForwardsResult{}, failures, nil
+	}
+
+	if err := h.deleteTunnelAndCleanup(tunnelID); err != nil {
+		h.rollbackTunnelForwardMigrationPlans(plans)
+		_ = h.redeployTunnelAndForwards(tunnelID)
+		return tunnelDeleteWithForwardsResult{}, nil, err
+	}
+
+	result.MigratedCount = len(plans)
+	result.PortAdjustedCount = portAdjustedCount
+	if len(warnings) > 0 {
+		result.Warnings = warnings
+	}
+	return result, nil, nil
+}
+
+func (h *Handler) planTunnelDeleteForwardMigrations(sourceTunnelID, targetTunnelID int64) ([]tunnelForwardMigrationPlan, []batchFailureDetail, error) {
+	forwards, err := h.listForwardsByTunnel(sourceTunnelID)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	entryNodes, err := h.tunnelEntryNodeIDs(targetTunnelID)
+	if err != nil {
+		return nil, nil, err
+	}
+	if len(entryNodes) == 0 {
+		return nil, nil, errors.New("目标隧道缺少入口节点")
+	}
+
+	plans := make([]tunnelForwardMigrationPlan, 0, len(forwards))
+	failures := make([]batchFailureDetail, 0)
+	reservedPorts := make(map[int64]map[int]bool)
+
+	for _, forward := range forwards {
+		plan, planErr := h.planSingleTunnelDeleteForwardMigration(&forward, targetTunnelID, entryNodes, reservedPorts)
+		if planErr != nil {
+			failures = appendBatchFailure(failures, forward.ID, forward.Name, planErr)
+			continue
+		}
+		plans = append(plans, plan)
+	}
+
+	return plans, failures, nil
+}
+
+func (h *Handler) planSingleTunnelDeleteForwardMigration(forward *forwardRecord, targetTunnelID int64, targetEntryNodes []int64, reservedPorts map[int64]map[int]bool) (tunnelForwardMigrationPlan, error) {
+	if forward == nil {
+		return tunnelForwardMigrationPlan{}, errors.New("转发不存在")
+	}
+
+	oldPorts, err := h.listForwardPorts(forward.ID)
+	if err != nil {
+		return tunnelForwardMigrationPlan{}, err
+	}
+	if len(oldPorts) == 0 {
+		return tunnelForwardMigrationPlan{}, errors.New("转发入口端口不存在")
+	}
+
+	minPort := h.repo.GetMinForwardPort(forward.ID)
+	targetPort := 0
+	if minPort.Valid {
+		targetPort = int(minPort.Int64)
+	}
+	if targetPort <= 0 {
+		targetPort = h.pickTunnelPort(targetTunnelID)
+	}
+	if targetPort <= 0 {
+		targetPort = 10000
+	}
+
+	hasCustomInIP := false
+	for _, oldPort := range oldPorts {
+		if strings.TrimSpace(oldPort.InIP) != "" {
+			hasCustomInIP = true
+			break
+		}
+	}
+	if hasCustomInIP && len(targetEntryNodes) > 1 {
+		return tunnelForwardMigrationPlan{}, errors.New("多入口隧道的转发不支持保留自定义监听IP，请先手动调整该规则")
+	}
+
+	for _, nodeID := range targetEntryNodes {
+		node, nodeErr := h.getNodeRecord(nodeID)
+		if nodeErr != nil {
+			return tunnelForwardMigrationPlan{}, nodeErr
+		}
+		if err := validateRemoteNodePort(node, targetPort); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if err := validateLocalNodePort(node, targetPort); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if err := h.validateForwardPortAvailability(node, targetPort, forward.ID); err != nil {
+			return tunnelForwardMigrationPlan{}, err
+		}
+		if reservedOnNode, ok := reservedPorts[nodeID]; ok && reservedOnNode[targetPort] {
+			return tunnelForwardMigrationPlan{}, fmt.Errorf("目标隧道入口节点端口 %d 已被本次迁移中的其他规则占用", targetPort)
+		}
+	}
+
+	for _, nodeID := range targetEntryNodes {
+		reservedOnNode := reservedPorts[nodeID]
+		if reservedOnNode == nil {
+			reservedOnNode = make(map[int]bool)
+			reservedPorts[nodeID] = reservedOnNode
+		}
+		reservedOnNode[targetPort] = true
+	}
+
+	oldNodeIDs := forwardPortNodeIDs(oldPorts)
+	newNodeIDs := uniqueInt64s(targetEntryNodes)
+	removedNodeIDs := diffInt64s(oldNodeIDs, newNodeIDs)
+	keptNodeIDs := diffInt64s(oldNodeIDs, removedNodeIDs)
+
+	previousPort := 0
+	if len(oldPorts) > 0 {
+		previousPort = oldPorts[0].Port
+	}
+
+	return tunnelForwardMigrationPlan{
+		forward:        forward,
+		oldPorts:       oldPorts,
+		targetTunnelID: targetTunnelID,
+		targetPort:     targetPort,
+		keptNodeIDs:    keptNodeIDs,
+		removedNodeIDs: removedNodeIDs,
+		portAdjusted:   previousPort > 0 && previousPort != targetPort,
+	}, nil
+}
+
+func (h *Handler) executeTunnelDeleteForwardMigrations(plans []tunnelForwardMigrationPlan) ([]string, error, batchFailureDetail) {
+	warnings := make([]string, 0)
+	completed := make([]tunnelForwardMigrationPlan, 0, len(plans))
+
+	for _, plan := range plans {
+		migrationWarnings, err := h.applyTunnelDeleteForwardMigration(plan)
+		if err != nil {
+			h.rollbackTunnelForwardMigrationPlans(completed)
+			return warnings, err, batchFailureDetail{ID: plan.forward.ID, Name: plan.forward.Name, Reason: normalizeBatchFailureReason(errString(err))}
+		}
+		warnings = append(warnings, migrationWarnings...)
+		completed = append(completed, plan)
+	}
+
+	return warnings, nil, batchFailureDetail{}
+}
+
+func (h *Handler) applyTunnelDeleteForwardMigration(plan tunnelForwardMigrationPlan) ([]string, error) {
+	if plan.forward == nil {
+		return nil, errors.New("转发不存在")
+	}
+
+	if err := h.repo.UpdateForwardTunnel(plan.forward.ID, plan.targetTunnelID, time.Now().UnixMilli()); err != nil {
+		return nil, err
+	}
+	if err := h.replaceForwardPorts(plan.forward.ID, plan.targetTunnelID, plan.targetPort, ""); err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+
+	updatedForward, err := h.getForwardRecord(plan.forward.ID)
+	if err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+
+	warnings := make([]string, 0)
+	if len(plan.keptNodeIDs) > 0 {
+		for _, nodeID := range plan.keptNodeIDs {
+			if delErr := h.deleteForwardServicesOnNodeBatch(plan.forward, nodeID); delErr != nil {
+				nodeLabel := fmt.Sprintf("%d", nodeID)
+				if n, nErr := h.getNodeRecord(nodeID); nErr == nil && n != nil && strings.TrimSpace(n.Name) != "" {
+					nodeLabel = strings.TrimSpace(n.Name)
+				}
+				warnings = append(warnings, fmt.Sprintf("节点 %s 清理旧转发监听失败: %v", nodeLabel, delErr))
+			}
+		}
+		time.Sleep(tunnelServiceBindRetryDelay)
+	}
+
+	syncWarnings, err := h.syncForwardServicesWithWarnings(updatedForward, "UpdateService", true)
+	if err != nil {
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+		return nil, err
+	}
+	warnings = append(warnings, syncWarnings...)
+
+	if len(plan.removedNodeIDs) > 0 {
+		for _, nodeID := range plan.removedNodeIDs {
+			if delErr := h.deleteForwardServicesOnNodeBatch(plan.forward, nodeID); delErr != nil {
+				nodeLabel := fmt.Sprintf("%d", nodeID)
+				if n, nErr := h.getNodeRecord(nodeID); nErr == nil && n != nil && strings.TrimSpace(n.Name) != "" {
+					nodeLabel = strings.TrimSpace(n.Name)
+				}
+				warnings = append(warnings, fmt.Sprintf("节点 %s 清理旧隧道残留服务失败: %v", nodeLabel, delErr))
+			}
+		}
+	}
+
+	return warnings, nil
+}
+
+func (h *Handler) rollbackTunnelForwardMigrationPlans(plans []tunnelForwardMigrationPlan) {
+	for i := len(plans) - 1; i >= 0; i-- {
+		plan := plans[i]
+		h.rollbackForwardMutation(plan.forward, plan.oldPorts)
+	}
+}
+
+func (h *Handler) deleteTunnelAndCleanup(tunnelID int64) error {
+	h.cleanupTunnelRuntime(tunnelID)
+	h.cleanupFederationRuntime(tunnelID)
+	if err := h.deleteTunnelByID(tunnelID); err != nil {
+		return err
+	}
+	return nil
+}
+
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}

go-backend/internal/http/handler/tunnel_entry_sqlite_test.go

@@ -0,0 +1,104 @@
+package handler
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestValidateTunnelEntryPortConflictsForNewEntriesDoesNotBlockOnSQLiteTx(t *testing.T) {
+	r, err := repo.Open(filepath.Join(t.TempDir(), "panel.db"))
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = r.Close()
+	})
+	h := &Handler{repo: r}
+	now := time.Now().UnixMilli()
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, port, created_time, status, tcp_listen_addr, udp_listen_addr, is_remote)
+		VALUES
+			('entry-old', 'secret-old', '10.0.0.1', '12000-12010', ?, 1, '[::]', '[::]', 0),
+			('entry-new', 'secret-new', '10.0.0.2', '12000-12010', ?, 1, '[::]', '[::]', 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert nodes: %v", err)
+	}
+	var oldEntryID, newEntryID int64
+	if err := r.DB().Raw(`SELECT id FROM node WHERE name = 'entry-old'`).Scan(&oldEntryID).Error; err != nil {
+		t.Fatalf("load old entry id: %v", err)
+	}
+	if err := r.DB().Raw(`SELECT id FROM node WHERE name = 'entry-new'`).Scan(&newEntryID).Error; err != nil {
+		t.Fatalf("load new entry id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, inx, ip_preference)
+		VALUES('sqlite-tunnel', 1, 1, 'tls', 1, ?, ?, 1, 1, '')
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	var tunnelID int64
+	if err := r.DB().Raw(`SELECT id FROM tunnel WHERE name = 'sqlite-tunnel'`).Scan(&tunnelID).Error; err != nil {
+		t.Fatalf("load tunnel id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, inx, protocol)
+		VALUES(?, '1', ?, 1, 'tls')
+	`, tunnelID, oldEntryID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, created_time, updated_time, status, inx)
+		VALUES(1, 'tester', 'forward-a', ?, '127.0.0.1:8080', 'fifo', ?, ?, 1, 1)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	var forwardID int64
+	if err := r.DB().Raw(`SELECT id FROM forward WHERE name = 'forward-a'`).Scan(&forwardID).Error; err != nil {
+		t.Fatalf("load forward id: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward_port(forward_id, node_id, port)
+		VALUES(?, ?, 12001)
+	`, forwardID, oldEntryID).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	tx := r.BeginTx()
+	if tx == nil {
+		t.Fatal("begin tx: nil transaction")
+	}
+	if tx.Error != nil {
+		t.Fatalf("begin tx: %v", tx.Error)
+	}
+
+	errCh := make(chan error, 1)
+	doneCh := make(chan struct{})
+	go func() {
+		defer close(doneCh)
+		errCh <- h.validateTunnelEntryPortConflictsForNewEntriesTx(tx, tunnelID, []int64{oldEntryID}, []int64{oldEntryID, newEntryID})
+	}()
+
+	select {
+	case err := <-errCh:
+		if err != nil {
+			_ = tx.Rollback().Error
+			t.Fatalf("unexpected validation error: %v", err)
+		}
+	case <-time.After(500 * time.Millisecond):
+		_ = tx.Rollback().Error
+		<-doneCh
+		t.Fatal("validation blocked while transaction was open on sqlite")
+	}
+
+	if err := tx.Rollback().Error; err != nil {
+		t.Fatalf("rollback tx: %v", err)
+	}
+}

go-backend/internal/http/handler/tunnel_metrics_ingestion.go

@@ -0,0 +1,111 @@
+package handler
+
+import (
+	"log"
+	"strings"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+type tunnelTrafficDelta struct {
+	bytesIn  int64
+	bytesOut int64
+}
+
+func unixMilliBucketMinute(nowMs int64) int64 {
+	if nowMs <= 0 {
+		return 0
+	}
+	const minuteMs = int64(time.Minute / time.Millisecond)
+	return nowMs - (nowMs % minuteMs)
+}
+
+func (h *Handler) recordTunnelMetricsFromFlowItems(nodeID int64, items []flowItem, nowMs int64) {
+	if h == nil || h.repo == nil {
+		return
+	}
+	if nodeID <= 0 || len(items) == 0 {
+		return
+	}
+
+	bucketTs := unixMilliBucketMinute(nowMs)
+	if bucketTs <= 0 {
+		return
+	}
+
+	forwardDeltas := make(map[int64]tunnelTrafficDelta)
+	for _, item := range items {
+		name := strings.TrimSpace(item.N)
+		if name == "" || name == "web_api" {
+			continue
+		}
+		forwardID, _, _, ok := parseFlowServiceIDs(name)
+		if !ok {
+			continue
+		}
+		if item.D == 0 && item.U == 0 {
+			continue
+		}
+		d := forwardDeltas[forwardID]
+		d.bytesIn += item.D
+		d.bytesOut += item.U
+		forwardDeltas[forwardID] = d
+	}
+	if len(forwardDeltas) == 0 {
+		return
+	}
+
+	forwardIDs := make([]int64, 0, len(forwardDeltas))
+	for id := range forwardDeltas {
+		forwardIDs = append(forwardIDs, id)
+	}
+
+	forwardTunnelMap, err := h.repo.MapForwardIDsToTunnelIDs(forwardIDs)
+	if err != nil {
+		log.Printf("monitoring write skipped op=tunnel_metric.map_forward_to_tunnel node_id=%d err=%v", nodeID, err)
+		return
+	}
+	if len(forwardTunnelMap) == 0 {
+		return
+	}
+
+	tunnelAgg := make(map[int64]tunnelTrafficDelta)
+	for forwardID, delta := range forwardDeltas {
+		tunnelID := forwardTunnelMap[forwardID]
+		if tunnelID <= 0 {
+			continue
+		}
+		a := tunnelAgg[tunnelID]
+		a.bytesIn += delta.bytesIn
+		a.bytesOut += delta.bytesOut
+		tunnelAgg[tunnelID] = a
+	}
+	if len(tunnelAgg) == 0 {
+		return
+	}
+
+	metrics := make([]*model.TunnelMetric, 0, len(tunnelAgg))
+	for tunnelID, delta := range tunnelAgg {
+		if delta.bytesIn == 0 && delta.bytesOut == 0 {
+			continue
+		}
+		metrics = append(metrics, &model.TunnelMetric{
+			TunnelID:     tunnelID,
+			NodeID:       nodeID,
+			Timestamp:    bucketTs,
+			BytesIn:      delta.bytesIn,
+			BytesOut:     delta.bytesOut,
+			Connections:  0,
+			Errors:       0,
+			AvgLatencyMs: 0,
+		})
+	}
+	if len(metrics) == 0 {
+		return
+	}
+
+	if err := h.repo.UpsertTunnelMetricBuckets(metrics); err != nil {
+		log.Printf("monitoring write failed op=tunnel_metric.upsert_buckets node_id=%d bucket_ts=%d count=%d err=%v", nodeID, bucketTs, len(metrics), err)
+	}
+}

go-backend/internal/http/handler/tunnel_quality_prober.go

@@ -0,0 +1,332 @@
+package handler
+
+import (
+	"context"
+	"log"
+	"sync"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+const (
+	tunnelQualityProbeInterval = 10 * time.Second
+	tunnelQualityProbeTimeout  = 8 * time.Second
+	tunnelQualityPingTimeoutMs = 5000
+	tunnelQualityRetention     = 24 * time.Hour // keep 24h of history
+	tunnelQualityPruneInterval = 10 * time.Minute
+)
+
+// tunnelQualitySnapshot is the in-memory latest probe result for a tunnel.
+type tunnelQualitySnapshot struct {
+	TunnelID           int64   `json:"tunnelId"`
+	EntryToExitLatency float64 `json:"entryToExitLatency"`
+	ExitToBingLatency  float64 `json:"exitToBingLatency"`
+	EntryToExitLoss    float64 `json:"entryToExitLoss"`
+	ExitToBingLoss     float64 `json:"exitToBingLoss"`
+	Success            bool    `json:"success"`
+	ErrorMessage       string  `json:"errorMessage,omitempty"`
+	Timestamp          int64   `json:"timestamp"`
+}
+
+// tunnelQualityProber runs periodic TCP ping probes against all enabled tunnels.
+// Design mirrors health.Checker: background goroutine with worker pool + scheduled cleanup.
+type tunnelQualityProber struct {
+	handler   *Handler
+	cache     sync.Map // tunnelID (int64) → *tunnelQualitySnapshot
+	ctx       context.Context
+	cancel    context.CancelFunc
+	interval  time.Duration
+	lastPrune int64
+}
+
+// newTunnelQualityProber creates a new prober (not yet running).
+func newTunnelQualityProber(h *Handler) *tunnelQualityProber {
+	ctx, cancel := context.WithCancel(context.Background())
+	return &tunnelQualityProber{
+		handler:  h,
+		ctx:      ctx,
+		cancel:   cancel,
+		interval: tunnelQualityProbeInterval,
+	}
+}
+
+// Start launches the background probe loop (call from jobs.go).
+func (p *tunnelQualityProber) Start(ctx context.Context) {
+	// Use the provided context so we stop with other background jobs.
+	p.ctx, p.cancel = context.WithCancel(ctx)
+	p.loop()
+}
+
+// Stop halts the background probe loop.
+func (p *tunnelQualityProber) Stop() {
+	p.cancel()
+}
+
+// GetAll returns all cached quality snapshots (latest per tunnel).
+func (p *tunnelQualityProber) GetAll() []tunnelQualitySnapshot {
+	var items []tunnelQualitySnapshot
+	p.cache.Range(func(_, value interface{}) bool {
+		if snap, ok := value.(*tunnelQualitySnapshot); ok {
+			items = append(items, *snap)
+		}
+		return true
+	})
+	return items
+}
+
+func (p *tunnelQualityProber) loop() {
+	// Initial delay to let the system boot up
+	select {
+	case <-time.After(5 * time.Second):
+	case <-p.ctx.Done():
+		return
+	}
+
+	// Run once immediately
+	p.probeAll()
+
+	ticker := time.NewTicker(p.interval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-p.ctx.Done():
+			return
+		case <-ticker.C:
+			p.probeAll()
+			p.maybePrune()
+		}
+	}
+}
+
+// maybePrune deletes old quality rows periodically (mirrors PruneServiceMonitorResults).
+func (p *tunnelQualityProber) maybePrune() {
+	now := time.Now().UnixMilli()
+	if p.lastPrune > 0 && now-p.lastPrune < int64(tunnelQualityPruneInterval/time.Millisecond) {
+		return
+	}
+	p.lastPrune = now
+
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	cutoff := now - int64(tunnelQualityRetention/time.Millisecond)
+	if err := h.repo.PruneTunnelQualityResults(cutoff); err != nil {
+		log.Printf("tunnel_quality_prober: prune err=%v", err)
+	}
+}
+
+func (p *tunnelQualityProber) probeAll() {
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	tunnelIDs, err := h.repo.ListEnabledTunnelIDs()
+	if err != nil {
+		log.Printf("tunnel_quality_prober: list enabled tunnels err=%v", err)
+		return
+	}
+	if len(tunnelIDs) == 0 {
+		return
+	}
+
+	// Probe tunnels concurrently with a worker limit
+	// (mirrors health.Checker worker pool pattern)
+	const maxWorkers = 4
+	sem := make(chan struct{}, maxWorkers)
+	var wg sync.WaitGroup
+
+	for _, tunnelID := range tunnelIDs {
+		select {
+		case <-p.ctx.Done():
+			return
+		default:
+		}
+
+		wg.Add(1)
+		sem <- struct{}{}
+		go func(tid int64) {
+			defer wg.Done()
+			defer func() { <-sem }()
+			p.probeTunnel(tid)
+		}(tunnelID)
+	}
+	wg.Wait()
+}
+
+func (p *tunnelQualityProber) probeTunnel(tunnelID int64) {
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	now := time.Now().UnixMilli()
+	snap := &tunnelQualitySnapshot{
+		TunnelID:  tunnelID,
+		Timestamp: now,
+	}
+
+	// Get tunnel chain info
+	tunnel, err := h.getTunnelRecord(tunnelID)
+	if err != nil {
+		snap.ErrorMessage = "隧道不存在"
+		p.storeResult(snap)
+		return
+	}
+
+	chainRows, err := h.listChainNodesForTunnel(tunnelID)
+	if err != nil || len(chainRows) == 0 {
+		snap.ErrorMessage = "隧道配置不完整"
+		p.storeResult(snap)
+		return
+	}
+
+	ipPreference := h.repo.GetTunnelIPPreference(tunnelID)
+	inNodes, _, outNodes := splitChainNodeGroups(chainRows)
+
+	options := diagnosisExecOptions{
+		commandTimeout: tunnelQualityProbeTimeout,
+		pingTimeoutMS:  tunnelQualityPingTimeoutMs,
+		timeoutMessage: "探测超时",
+	}
+
+	switch tunnel.Type {
+	case 1:
+		// Port forwarding: entry → Bing only
+		if len(inNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(inNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+				snap.Success = true
+			} else {
+				snap.ErrorMessage = err.Error()
+			}
+		}
+	case 2:
+		// Tunnel forwarding: entry → exit + exit → Bing
+		probeOK := true
+
+		if len(inNodes) > 0 && len(outNodes) > 0 {
+			// Entry → Exit
+			targetNode, nodeErr := h.getNodeRecord(outNodes[0].NodeID)
+			if nodeErr == nil && targetNode != nil {
+				fromNode, _ := h.getNodeRecord(inNodes[0].NodeID)
+				targetIP, targetPort, resolveErr := resolveChainProbeTarget(fromNode, targetNode, outNodes[0].Port, ipPreference, outNodes[0].ConnectIP)
+				if resolveErr == nil {
+					lat, loss, err := p.tcpPingNode(inNodes[0].NodeID, targetIP, targetPort, options)
+					if err == nil {
+						snap.EntryToExitLatency = lat
+						snap.EntryToExitLoss = loss
+					} else {
+						snap.EntryToExitLatency = -1
+						snap.EntryToExitLoss = 100
+						probeOK = false
+					}
+				} else {
+					snap.ErrorMessage = resolveErr.Error()
+					probeOK = false
+				}
+			} else {
+				snap.ErrorMessage = "出口节点不可用"
+				probeOK = false
+			}
+		}
+
+		// Exit → Bing
+		if len(outNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(outNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+			} else {
+				if snap.ErrorMessage == "" {
+					snap.ErrorMessage = err.Error()
+				}
+				probeOK = false
+			}
+		}
+
+		snap.Success = probeOK
+	default:
+		// Unknown type: entry → Bing
+		if len(inNodes) > 0 {
+			lat, loss, err := p.tcpPingNode(inNodes[0].NodeID, "www.bing.com", 443, options)
+			if err == nil {
+				snap.ExitToBingLatency = lat
+				snap.ExitToBingLoss = loss
+				snap.Success = true
+			} else {
+				snap.ErrorMessage = err.Error()
+			}
+		}
+	}
+
+	p.storeResult(snap)
+}
+
+func (p *tunnelQualityProber) tcpPingNode(nodeID int64, ip string, port int, options diagnosisExecOptions) (latency float64, loss float64, err error) {
+	h := p.handler
+	if h == nil {
+		return 0, 100, nil
+	}
+
+	node, nodeErr := h.getNodeRecord(nodeID)
+	if nodeErr != nil {
+		return 0, 100, nodeErr
+	}
+
+	var pingData map[string]interface{}
+	var pingErr error
+	if node != nil && node.IsRemote == 1 {
+		pingData, pingErr = h.tcpPingViaRemoteNode(node, ip, port, options)
+	} else {
+		pingData, pingErr = h.tcpPingViaNode(nodeID, ip, port, options)
+	}
+	if pingErr != nil {
+		return 0, 100, pingErr
+	}
+
+	avgTime := asFloat(pingData["averageTime"], 0)
+	packetLoss := asFloat(pingData["packetLoss"], 100)
+
+	return avgTime, packetLoss, nil
+}
+
+func (p *tunnelQualityProber) storeResult(snap *tunnelQualitySnapshot) {
+	if snap == nil {
+		return
+	}
+
+	// Update in-memory cache (latest per tunnel)
+	p.cache.Store(snap.TunnelID, snap)
+
+	// Persist to database (history)
+	h := p.handler
+	if h == nil || h.repo == nil {
+		return
+	}
+
+	successInt := 0
+	if snap.Success {
+		successInt = 1
+	}
+
+	q := &model.TunnelQuality{
+		TunnelID:           snap.TunnelID,
+		EntryToExitLatency: snap.EntryToExitLatency,
+		ExitToBingLatency:  snap.ExitToBingLatency,
+		EntryToExitLoss:    snap.EntryToExitLoss,
+		ExitToBingLoss:     snap.ExitToBingLoss,
+		Success:            successInt,
+		ErrorMessage:       snap.ErrorMessage,
+		Timestamp:          snap.Timestamp,
+	}
+	if err := h.repo.InsertTunnelQuality(q); err != nil {
+		log.Printf("tunnel_quality_prober: insert db err=%v tunnel_id=%d", err, snap.TunnelID)
+	}
+}

go-backend/internal/http/handler/user_quota.go

@@ -0,0 +1,139 @@
+package handler
+
+import (
+	"errors"
+	"net/http"
+	"time"
+
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+)
+
+func isUserQuotaExceeded(view *model.UserQuotaView) bool {
+	if view == nil {
+		return false
+	}
+	if view.DailyLimitGB > 0 && view.DailyUsedBytes >= view.DailyLimitGB*bytesPerGB {
+		return true
+	}
+	if view.MonthlyLimitGB > 0 && view.MonthlyUsedBytes >= view.MonthlyLimitGB*bytesPerGB {
+		return true
+	}
+	return false
+}
+
+func (h *Handler) userQuotaBlockReason(userID int64, now int64) (string, error) {
+	if h == nil || h.repo == nil || userID <= 0 {
+		return "", nil
+	}
+	quota, err := h.repo.GetUserQuotaView(userID, time.UnixMilli(now))
+	if err != nil || quota == nil {
+		return "", err
+	}
+	if quota.DisabledByQuota == 1 || isUserQuotaExceeded(quota) {
+		return "该用户流量配额已超额，禁止开启转发", nil
+	}
+	return "", nil
+}
+
+func (h *Handler) enforceUserQuotaIfNeeded(userID int64, quota *model.UserQuotaView) {
+	if h == nil || h.repo == nil || userID <= 0 || quota == nil {
+		return
+	}
+	if quota.DisabledByQuota == 1 || !isUserQuotaExceeded(quota) {
+		return
+	}
+
+	forwards, err := h.listActiveForwardsByUser(userID)
+	if err != nil {
+		return
+	}
+	pausedIDs := make([]int64, 0, len(forwards))
+	now := time.Now().UnixMilli()
+	for i := range forwards {
+		forward := &forwards[i]
+		if forward.Status != 1 {
+			continue
+		}
+		if err := h.controlForwardServices(forward, "PauseService", false); err != nil {
+			continue
+		}
+		if err := h.repo.UpdateForwardStatus(forward.ID, 0, now); err != nil {
+			continue
+		}
+		pausedIDs = append(pausedIDs, forward.ID)
+	}
+	_ = h.repo.MarkUserQuotaDisabled(userID, pausedIDs, now)
+}
+
+func (h *Handler) applyUserQuotaRelease(release *repo.UserQuotaRelease, now int64) {
+	if h == nil || h.repo == nil || release == nil || release.UserID <= 0 || !release.UnblockUser {
+		return
+	}
+	for _, forwardID := range release.ForwardIDs {
+		forward, err := h.getForwardRecord(forwardID)
+		if err != nil || forward == nil {
+			continue
+		}
+		if err := h.ensureUserTunnelForwardAllowed(forward.UserID, forward.TunnelID, now); err != nil {
+			continue
+		}
+		if err := h.controlForwardServices(forward, "ResumeService", false); err != nil {
+			continue
+		}
+		_ = h.repo.UpdateForwardStatus(forwardID, 1, now)
+	}
+}
+
+func (h *Handler) resetUserQuotaWindows(now time.Time) {
+	if h == nil || h.repo == nil {
+		return
+	}
+	releases, err := h.repo.RollUserQuotaWindows(now)
+	if err != nil {
+		return
+	}
+	nowMs := now.UnixMilli()
+	for i := range releases {
+		h.applyUserQuotaRelease(&releases[i], nowMs)
+	}
+}
+
+func (h *Handler) userQuotaReset(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		response.WriteJSON(w, response.ErrDefault("请求失败"))
+		return
+	}
+	var req struct {
+		UserID int64  `json:"userId"`
+		Scope  string `json:"scope"`
+	}
+	if err := decodeJSON(r.Body, &req); err != nil {
+		response.WriteJSON(w, response.ErrDefault("请求参数错误"))
+		return
+	}
+	if req.UserID <= 0 {
+		response.WriteJSON(w, response.ErrDefault("用户ID不能为空"))
+		return
+	}
+	release, err := h.repo.ResetUserQuotaUsage(req.UserID, req.Scope, time.Now())
+	if err != nil {
+		response.WriteJSON(w, response.Err(-2, err.Error()))
+		return
+	}
+	nowMs := time.Now().UnixMilli()
+	h.applyUserQuotaRelease(release, nowMs)
+	response.WriteJSON(w, response.OKEmpty())
+}
+
+func (h *Handler) ensureUserForwardAllowedByQuota(userID int64, now int64) error {
+	reason, err := h.userQuotaBlockReason(userID, now)
+	if err != nil {
+		return err
+	}
+	if reason != "" {
+		return errors.New(reason)
+	}
+	return nil
+}

go-backend/internal/http/middleware/auth.go

@@ -101,6 +101,10 @@ func shouldSkip(path string) bool {
 }
 
 func requiresAdmin(path string) bool {
+	if strings.HasPrefix(path, "/api/v1/monitor/permission/") {
+		return true
+	}
+
 	if strings.HasPrefix(path, "/api/v1/group/") {
 		return true
 	}

go-backend/internal/metrics/ingestion.go

@@ -0,0 +1,135 @@
+package metrics
+
+import (
+	"context"
+	"log"
+	"sync"
+	"time"
+
+	"go-backend/internal/store/model"
+	"go-backend/internal/store/repo"
+)
+
+type SystemInfo struct {
+	Uptime           uint64  `json:"uptime"`
+	BytesReceived    uint64  `json:"bytes_received"`
+	BytesTransmitted uint64  `json:"bytes_transmitted"`
+	CPUUsage         float64 `json:"cpu_usage"`
+	MemoryUsage      float64 `json:"memory_usage"`
+	DiskUsage        float64 `json:"disk_usage"`
+	Load1            float64 `json:"load1"`
+	Load5            float64 `json:"load5"`
+	Load15           float64 `json:"load15"`
+	TCPConns         int64   `json:"tcp_conns"`
+	UDPConns         int64   `json:"udp_conns"`
+	NetInSpeed       int64   `json:"net_in_speed"`
+	NetOutSpeed      int64   `json:"net_out_speed"`
+}
+
+type IngestionService struct {
+	repo          *repo.Repository
+	nodeBuffer    []*model.NodeMetric
+	nodeBufferMu  sync.Mutex
+	flushInterval time.Duration
+	retentionDays int
+}
+
+func NewIngestionService(repo *repo.Repository) *IngestionService {
+	return &IngestionService{
+		repo:          repo,
+		nodeBuffer:    make([]*model.NodeMetric, 0, 500),
+		flushInterval: 30 * time.Second,
+		retentionDays: 7,
+	}
+}
+
+func (s *IngestionService) Start(ctx context.Context) {
+	flushTicker := time.NewTicker(s.flushInterval)
+	defer flushTicker.Stop()
+
+	pruneTicker := time.NewTicker(1 * time.Hour)
+	defer pruneTicker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			s.flushNodeMetrics()
+			return
+		case <-flushTicker.C:
+			s.flushNodeMetrics()
+		case <-pruneTicker.C:
+			s.pruneMetrics()
+		}
+	}
+}
+
+func (s *IngestionService) RecordNodeMetric(nodeID int64, info SystemInfo) {
+	m := &model.NodeMetric{
+		NodeID:      nodeID,
+		Timestamp:   time.Now().UnixMilli(),
+		CPUUsage:    info.CPUUsage,
+		MemUsage:    info.MemoryUsage,
+		DiskUsage:   info.DiskUsage,
+		NetInBytes:  int64(info.BytesReceived),
+		NetOutBytes: int64(info.BytesTransmitted),
+		NetInSpeed:  info.NetInSpeed,
+		NetOutSpeed: info.NetOutSpeed,
+		Load1:       info.Load1,
+		Load5:       info.Load5,
+		Load15:      info.Load15,
+		TCPConns:    info.TCPConns,
+		UDPConns:    info.UDPConns,
+		Uptime:      int64(info.Uptime),
+	}
+
+	s.nodeBufferMu.Lock()
+	s.nodeBuffer = append(s.nodeBuffer, m)
+	shouldFlush := len(s.nodeBuffer) >= 200
+	s.nodeBufferMu.Unlock()
+
+	if shouldFlush {
+		go s.flushNodeMetrics()
+	}
+}
+
+func (s *IngestionService) flushNodeMetrics() {
+	s.nodeBufferMu.Lock()
+	if len(s.nodeBuffer) == 0 {
+		s.nodeBufferMu.Unlock()
+		return
+	}
+	buffer := s.nodeBuffer
+	s.nodeBuffer = make([]*model.NodeMetric, 0, 500)
+	s.nodeBufferMu.Unlock()
+
+	if s.repo == nil {
+		return
+	}
+	if err := s.repo.InsertNodeMetricBatch(buffer); err != nil {
+		log.Printf("monitoring write failed op=node_metric.flush count=%d err=%v", len(buffer), err)
+	}
+}
+
+func (s *IngestionService) pruneMetrics() {
+	cutoff := time.Now().Add(-time.Duration(s.retentionDays) * 24 * time.Hour).UnixMilli()
+	if s.repo == nil {
+		return
+	}
+	if err := s.repo.PruneNodeMetrics(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=node_metric cutoff=%d err=%v", cutoff, err)
+	}
+	if err := s.repo.PruneTunnelMetrics(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=tunnel_metric cutoff=%d err=%v", cutoff, err)
+	}
+	if err := s.repo.PruneServiceMonitorResults(cutoff); err != nil {
+		log.Printf("monitoring prune failed op=service_monitor_result cutoff=%d err=%v", cutoff, err)
+	}
+}
+
+func (s *IngestionService) GetLatestMetric(nodeID int64) (*model.NodeMetric, error) {
+	return s.repo.GetLatestNodeMetric(nodeID)
+}
+
+func (s *IngestionService) GetMetrics(nodeID int64, startMs, endMs int64) ([]model.NodeMetric, error) {
+	return s.repo.GetNodeMetrics(nodeID, startMs, endMs)
+}

go-backend/internal/metrics/ingestion_test.go

@@ -0,0 +1,294 @@
+package metrics
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/repo"
+)
+
+func TestRecordNodeMetric(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		Uptime:           86400,
+		BytesReceived:    1024000,
+		BytesTransmitted: 2048000,
+		CPUUsage:         45.5,
+		MemoryUsage:      60.2,
+		DiskUsage:        30.1,
+		Load1:            1.5,
+		Load5:            1.2,
+		Load15:           0.9,
+		TCPConns:         100,
+		UDPConns:         50,
+		NetInSpeed:       51200,
+		NetOutSpeed:      102400,
+	}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, 0, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric, got %d", len(metrics))
+	}
+
+	m := metrics[0]
+	if m.CPUUsage != 45.5 {
+		t.Fatalf("expected CPUUsage 45.5, got %f", m.CPUUsage)
+	}
+	if m.MemUsage != 60.2 {
+		t.Fatalf("expected MemUsage 60.2, got %f", m.MemUsage)
+	}
+	if m.DiskUsage != 30.1 {
+		t.Fatalf("expected DiskUsage 30.1, got %f", m.DiskUsage)
+	}
+	if m.Load1 != 1.5 {
+		t.Fatalf("expected Load1 1.5, got %f", m.Load1)
+	}
+	if m.TCPConns != 100 {
+		t.Fatalf("expected TCPConns 100, got %d", m.TCPConns)
+	}
+	if m.UDPConns != 50 {
+		t.Fatalf("expected UDPConns 50, got %d", m.UDPConns)
+	}
+}
+
+func TestRecordNodeMetricAutoFlush(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		CPUUsage:    50.0,
+		MemoryUsage: 60.0,
+		DiskUsage:   30.0,
+	}
+
+	for i := 0; i < 250; i++ {
+		svc.RecordNodeMetric(1, info)
+	}
+
+	time.Sleep(100 * time.Millisecond)
+
+	metrics, err := r.GetNodeMetrics(1, 0, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) < 200 {
+		t.Fatalf("expected at least 200 metrics after auto-flush, got %d", len(metrics))
+	}
+}
+
+func TestIngestionServiceStart(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+	svc.flushInterval = 100 * time.Millisecond
+
+	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
+	defer cancel()
+
+	info := SystemInfo{
+		CPUUsage:    45.0,
+		MemoryUsage: 55.0,
+		DiskUsage:   35.0,
+	}
+
+	go svc.Start(ctx)
+
+	for i := 0; i < 10; i++ {
+		svc.RecordNodeMetric(1, info)
+		time.Sleep(50 * time.Millisecond)
+	}
+
+	<-ctx.Done()
+
+	metrics, err := r.GetNodeMetrics(1, 0, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) == 0 {
+		t.Fatalf("expected metrics after service run")
+	}
+}
+
+func TestGetLatestMetric(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	now := time.Now().UnixMilli()
+
+	info1 := SystemInfo{CPUUsage: 40.0, MemoryUsage: 50.0, DiskUsage: 30.0}
+	svc.RecordNodeMetric(1, info1)
+
+	time.Sleep(5 * time.Millisecond)
+
+	info2 := SystemInfo{CPUUsage: 60.0, MemoryUsage: 70.0, DiskUsage: 40.0}
+	svc.RecordNodeMetric(1, info2)
+
+	svc.flushNodeMetrics()
+
+	latest, err := svc.GetLatestMetric(1)
+	if err != nil {
+		t.Fatalf("get latest: %v", err)
+	}
+	if latest == nil {
+		t.Fatalf("expected latest metric")
+	}
+	if latest.CPUUsage != 60.0 {
+		t.Fatalf("expected latest CPUUsage 60.0, got %f", latest.CPUUsage)
+	}
+
+	_ = now
+
+	latestNone, err := svc.GetLatestMetric(999)
+	if err != nil {
+		t.Fatalf("get latest for non-existent: %v", err)
+	}
+	if latestNone != nil {
+		t.Fatalf("expected nil for non-existent node")
+	}
+}
+
+func TestGetMetricsWithTimeRange(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	now := time.Now().UnixMilli()
+
+	for i := 0; i < 5; i++ {
+		info := SystemInfo{
+			CPUUsage:    float64(40 + i*5),
+			MemoryUsage: 50.0,
+			DiskUsage:   30.0,
+		}
+		svc.RecordNodeMetric(1, info)
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	svc.flushNodeMetrics()
+
+	metrics, err := svc.GetMetrics(1, 0, now+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 5 {
+		t.Fatalf("expected 5 metrics, got %d", len(metrics))
+	}
+}
+
+func TestPruneMetrics(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+	svc.retentionDays = 1
+
+	info := SystemInfo{CPUUsage: 50.0, MemoryUsage: 60.0, DiskUsage: 30.0}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	svc.pruneMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, 0, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric (not pruned), got %d", len(metrics))
+	}
+}
+
+func TestMultipleNodes(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{
+		CPUUsage:    50.0,
+		MemoryUsage: 60.0,
+		DiskUsage:   30.0,
+	}
+
+	svc.RecordNodeMetric(1, info)
+	svc.RecordNodeMetric(2, info)
+	svc.RecordNodeMetric(3, info)
+
+	svc.flushNodeMetrics()
+
+	for nodeID := int64(1); nodeID <= 3; nodeID++ {
+		metrics, err := r.GetNodeMetrics(nodeID, 0, time.Now().UnixMilli()+1000)
+		if err != nil {
+			t.Fatalf("get metrics for node %d: %v", nodeID, err)
+		}
+		if len(metrics) != 1 {
+			t.Fatalf("expected 1 metric for node %d, got %d", nodeID, len(metrics))
+		}
+	}
+}
+
+func TestZeroValues(t *testing.T) {
+	r, err := repo.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	svc := NewIngestionService(r)
+
+	info := SystemInfo{}
+
+	svc.RecordNodeMetric(1, info)
+	svc.flushNodeMetrics()
+
+	metrics, err := r.GetNodeMetrics(1, 0, time.Now().UnixMilli()+1000)
+	if err != nil {
+		t.Fatalf("get metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 metric, got %d", len(metrics))
+	}
+
+	m := metrics[0]
+	if m.CPUUsage != 0 || m.MemUsage != 0 || m.DiskUsage != 0 {
+		t.Fatalf("expected zero values, got CPU=%f Mem=%f Disk=%f", m.CPUUsage, m.MemUsage, m.DiskUsage)
+	}
+}

go-backend/internal/monitoring/limits.go

@@ -0,0 +1,114 @@
+package monitoring
+
+import (
+	"strconv"
+	"strings"
+)
+
+type ServiceMonitorLimits struct {
+	CheckerScanIntervalSec int `json:"checkerScanIntervalSec"`
+	WorkerLimit            int `json:"workerLimit"`
+
+	MinIntervalSec     int `json:"minIntervalSec"`
+	DefaultIntervalSec int `json:"defaultIntervalSec"`
+
+	MinTimeoutSec     int `json:"minTimeoutSec"`
+	DefaultTimeoutSec int `json:"defaultTimeoutSec"`
+	MaxTimeoutSec     int `json:"maxTimeoutSec"`
+}
+
+const (
+	ConfigServiceMonitorCheckerScanIntervalSec = "service_monitor_checker_scan_interval_sec"
+	ConfigServiceMonitorWorkerLimit            = "service_monitor_worker_limit"
+	ConfigServiceMonitorMinIntervalSec         = "service_monitor_min_interval_sec"
+	ConfigServiceMonitorDefaultIntervalSec     = "service_monitor_default_interval_sec"
+	ConfigServiceMonitorMinTimeoutSec          = "service_monitor_min_timeout_sec"
+	ConfigServiceMonitorDefaultTimeoutSec      = "service_monitor_default_timeout_sec"
+	ConfigServiceMonitorMaxTimeoutSec          = "service_monitor_max_timeout_sec"
+)
+
+func DefaultServiceMonitorLimits() ServiceMonitorLimits {
+	return ServiceMonitorLimits{
+		CheckerScanIntervalSec: 30,
+		WorkerLimit:            5,
+		MinIntervalSec:         30,
+		DefaultIntervalSec:     60,
+		MinTimeoutSec:          1,
+		DefaultTimeoutSec:      5,
+		MaxTimeoutSec:          60,
+	}
+}
+
+// ServiceMonitorLimitsFromConfigMap parses limits from vite_config values.
+// Missing/invalid values fall back to defaults.
+func ServiceMonitorLimitsFromConfigMap(cfg map[string]string) ServiceMonitorLimits {
+	limits := DefaultServiceMonitorLimits()
+	if cfg == nil {
+		return limits
+	}
+
+	limits.CheckerScanIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorCheckerScanIntervalSec, limits.CheckerScanIntervalSec)
+	limits.WorkerLimit = parseConfigInt(cfg, ConfigServiceMonitorWorkerLimit, limits.WorkerLimit)
+	limits.MinIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorMinIntervalSec, limits.MinIntervalSec)
+	limits.DefaultIntervalSec = parseConfigInt(cfg, ConfigServiceMonitorDefaultIntervalSec, limits.DefaultIntervalSec)
+	limits.MinTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorMinTimeoutSec, limits.MinTimeoutSec)
+	limits.DefaultTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorDefaultTimeoutSec, limits.DefaultTimeoutSec)
+	limits.MaxTimeoutSec = parseConfigInt(cfg, ConfigServiceMonitorMaxTimeoutSec, limits.MaxTimeoutSec)
+
+	return normalizeServiceMonitorLimits(limits)
+}
+
+func normalizeServiceMonitorLimits(limits ServiceMonitorLimits) ServiceMonitorLimits {
+	if limits.CheckerScanIntervalSec <= 0 {
+		limits.CheckerScanIntervalSec = 30
+	}
+	if limits.WorkerLimit <= 0 {
+		limits.WorkerLimit = 5
+	}
+	if limits.WorkerLimit > 50 {
+		limits.WorkerLimit = 50
+	}
+
+	if limits.MinIntervalSec <= 0 {
+		limits.MinIntervalSec = limits.CheckerScanIntervalSec
+	}
+	if limits.MinIntervalSec < limits.CheckerScanIntervalSec {
+		limits.MinIntervalSec = limits.CheckerScanIntervalSec
+	}
+	if limits.DefaultIntervalSec <= 0 {
+		limits.DefaultIntervalSec = 60
+	}
+	if limits.DefaultIntervalSec < limits.MinIntervalSec {
+		limits.DefaultIntervalSec = limits.MinIntervalSec
+	}
+
+	if limits.MinTimeoutSec <= 0 {
+		limits.MinTimeoutSec = 1
+	}
+	if limits.DefaultTimeoutSec <= 0 {
+		limits.DefaultTimeoutSec = 5
+	}
+	if limits.DefaultTimeoutSec < limits.MinTimeoutSec {
+		limits.DefaultTimeoutSec = limits.MinTimeoutSec
+	}
+	if limits.MaxTimeoutSec <= 0 {
+		limits.MaxTimeoutSec = 60
+	}
+	if limits.MaxTimeoutSec < limits.DefaultTimeoutSec {
+		limits.MaxTimeoutSec = limits.DefaultTimeoutSec
+	}
+
+	return limits
+}
+
+func parseConfigInt(cfg map[string]string, key string, fallback int) int {
+	v := strings.TrimSpace(cfg[key])
+	if v == "" {
+		return fallback
+	}
+	n, err := strconv.Atoi(v)
+	if err != nil {
+		return fallback
+	}
+	return n
+}

go-backend/internal/store/model/model.go

@@ -48,37 +48,43 @@ type Forward struct {
 func (Forward) TableName() string { return "forward" }
 
 type ForwardPort struct {
-	ID        int64 `gorm:"primaryKey;autoIncrement"`
-	ForwardID int64 `gorm:"column:forward_id;not null"`
-	NodeID    int64 `gorm:"column:node_id;not null"`
-	Port      int   `gorm:"not null"`
+	ID        int64          `gorm:"primaryKey;autoIncrement"`
+	ForwardID int64          `gorm:"column:forward_id;not null"`
+	NodeID    int64          `gorm:"column:node_id;not null"`
+	Port      int            `gorm:"not null"`
+	InIP      sql.NullString `gorm:"column:in_ip;type:text"`
 }
 
 func (ForwardPort) TableName() string { return "forward_port" }
 
 type Node struct {
-	ID            int64          `gorm:"primaryKey;autoIncrement"`
-	Name          string         `gorm:"type:varchar(100);not null"`
-	Secret        string         `gorm:"type:varchar(100);not null"`
-	ServerIP      string         `gorm:"column:server_ip;type:varchar(100);not null"`
-	ServerIPV4    sql.NullString `gorm:"column:server_ip_v4;type:varchar(100)"`
-	ServerIPV6    sql.NullString `gorm:"column:server_ip_v6;type:varchar(100)"`
-	Port          string         `gorm:"type:text;not null"`
-	InterfaceName sql.NullString `gorm:"column:interface_name;type:varchar(200)"`
-	Version       sql.NullString `gorm:"type:varchar(100)"`
-	HTTP          int            `gorm:"column:http;not null;default:0"`
-	TLS           int            `gorm:"column:tls;not null;default:0"`
-	Socks         int            `gorm:"not null;default:0"`
-	CreatedTime   int64          `gorm:"column:created_time;not null"`
-	UpdatedTime   sql.NullInt64  `gorm:"column:updated_time"`
-	Status        int            `gorm:"not null"`
-	TCPListenAddr string         `gorm:"column:tcp_listen_addr;type:varchar(100);not null;default:'[::]'"`
-	UDPListenAddr string         `gorm:"column:udp_listen_addr;type:varchar(100);not null;default:'[::]'"`
-	Inx           int            `gorm:"not null;default:0"`
-	IsRemote      int            `gorm:"column:is_remote;default:0"`
-	RemoteURL     sql.NullString `gorm:"column:remote_url;type:text"`
-	RemoteToken   sql.NullString `gorm:"column:remote_token;type:text"`
-	RemoteConfig  sql.NullString `gorm:"column:remote_config;type:text"`
+	ID                      int64          `gorm:"primaryKey;autoIncrement"`
+	Name                    string         `gorm:"type:varchar(100);not null"`
+	Remark                  sql.NullString `gorm:"column:remark;type:text"`
+	ExpiryTime              sql.NullInt64  `gorm:"column:expiry_time"`
+	RenewalCycle            sql.NullString `gorm:"column:renewal_cycle;type:varchar(20)"`
+	Secret                  string         `gorm:"type:varchar(100);not null"`
+	ServerIP                string         `gorm:"column:server_ip;type:varchar(100);not null"`
+	ServerIPV4              sql.NullString `gorm:"column:server_ip_v4;type:varchar(100)"`
+	ServerIPV6              sql.NullString `gorm:"column:server_ip_v6;type:varchar(100)"`
+	ExtraIPs                sql.NullString `gorm:"column:extra_ips;type:text"`
+	Port                    string         `gorm:"type:text;not null"`
+	InterfaceName           sql.NullString `gorm:"column:interface_name;type:varchar(200)"`
+	Version                 sql.NullString `gorm:"type:varchar(100)"`
+	HTTP                    int            `gorm:"column:http;not null;default:0"`
+	TLS                     int            `gorm:"column:tls;not null;default:0"`
+	Socks                   int            `gorm:"not null;default:0"`
+	CreatedTime             int64          `gorm:"column:created_time;not null"`
+	UpdatedTime             sql.NullInt64  `gorm:"column:updated_time"`
+	Status                  int            `gorm:"not null"`
+	TCPListenAddr           string         `gorm:"column:tcp_listen_addr;type:varchar(100);not null;default:'[::]'"`
+	UDPListenAddr           string         `gorm:"column:udp_listen_addr;type:varchar(100);not null;default:'[::]'"`
+	Inx                     int            `gorm:"not null;default:0"`
+	IsRemote                int            `gorm:"column:is_remote;default:0"`
+	RemoteURL               sql.NullString `gorm:"column:remote_url;type:text"`
+	RemoteToken             sql.NullString `gorm:"column:remote_token;type:text"`
+	RemoteConfig            sql.NullString `gorm:"column:remote_config;type:text"`
+	ExpiryReminderDismissed int            `gorm:"column:expiry_reminder_dismissed;not null;default:0"`
 }
 
 func (Node) TableName() string { return "node" }
@@ -124,6 +130,23 @@ type Tunnel struct {
 
 func (Tunnel) TableName() string { return "tunnel" }
 
+type UserQuota struct {
+	UserID           int64  `gorm:"column:user_id;primaryKey"`
+	DailyLimitGB     int64  `gorm:"column:daily_limit_gb;not null;default:0"`
+	MonthlyLimitGB   int64  `gorm:"column:monthly_limit_gb;not null;default:0"`
+	DailyUsedBytes   int64  `gorm:"column:daily_used_bytes;not null;default:0"`
+	MonthlyUsedBytes int64  `gorm:"column:monthly_used_bytes;not null;default:0"`
+	DayKey           int64  `gorm:"column:day_key;not null;default:0"`
+	MonthKey         int64  `gorm:"column:month_key;not null;default:0"`
+	DisabledByQuota  int    `gorm:"column:disabled_by_quota;not null;default:0"`
+	DisabledAt       int64  `gorm:"column:disabled_at;not null;default:0"`
+	PausedForwardIDs string `gorm:"column:paused_forward_ids;type:text;not null;default:''"`
+	CreatedTime      int64  `gorm:"column:created_time;not null"`
+	UpdatedTime      int64  `gorm:"column:updated_time;not null"`
+}
+
+func (UserQuota) TableName() string { return "user_quota" }
+
 type ChainTunnel struct {
 	ID        int64          `gorm:"primaryKey;autoIncrement"`
 	TunnelID  int64          `gorm:"column:tunnel_id;not null"`
@@ -133,6 +156,7 @@ type ChainTunnel struct {
 	Strategy  sql.NullString `gorm:"type:varchar(10)"`
 	Inx       sql.NullInt64  `gorm:"column:inx"`
 	Protocol  sql.NullString `gorm:"type:varchar(10)"`
+	ConnectIP sql.NullString `gorm:"column:connect_ip;type:varchar(45)"`
 }
 
 func (ChainTunnel) TableName() string { return "chain_tunnel" }
@@ -211,6 +235,16 @@ type GroupPermissionGrant struct {
 
 func (GroupPermissionGrant) TableName() string { return "group_permission_grant" }
 
+// MonitorPermission grants a non-admin user access to monitoring endpoints.
+// One row per user_id.
+type MonitorPermission struct {
+	ID          int64 `gorm:"primaryKey;autoIncrement" json:"id"`
+	UserID      int64 `gorm:"column:user_id;not null;uniqueIndex:idx_monitor_permission_user" json:"userId"`
+	CreatedTime int64 `gorm:"column:created_time;not null" json:"createdTime"`
+}
+
+func (MonitorPermission) TableName() string { return "monitor_permission" }
+
 type ViteConfig struct {
 	ID    int64  `gorm:"primaryKey;autoIncrement" json:"id"`
 	Name  string `gorm:"type:varchar(200);not null;uniqueIndex" json:"name"`
@@ -315,28 +349,36 @@ type BackupData struct {
 }
 
 type UserBackup struct {
-	ID            int64  `json:"id"`
-	User          string `json:"user"`
-	Pwd           string `json:"pwd"`
-	RoleID        int    `json:"roleId"`
-	ExpTime       int64  `json:"expTime"`
-	Flow          int64  `json:"flow"`
-	InFlow        int64  `json:"inFlow"`
-	OutFlow       int64  `json:"outFlow"`
-	FlowResetTime int64  `json:"flowResetTime"`
-	Num           int    `json:"num"`
-	CreatedTime   int64  `json:"createdTime"`
-	UpdatedTime   int64  `json:"updatedTime,omitempty"`
-	Status        int    `json:"status"`
+	ID              int64  `json:"id"`
+	User            string `json:"user"`
+	Pwd             string `json:"pwd"`
+	RoleID          int    `json:"roleId"`
+	ExpTime         int64  `json:"expTime"`
+	Flow            int64  `json:"flow"`
+	InFlow          int64  `json:"inFlow"`
+	OutFlow         int64  `json:"outFlow"`
+	FlowResetTime   int64  `json:"flowResetTime"`
+	DailyQuotaGB    int64  `json:"dailyQuotaGB,omitempty"`
+	MonthlyQuotaGB  int64  `json:"monthlyQuotaGB,omitempty"`
+	DisabledByQuota int    `json:"disabledByQuota,omitempty"`
+	QuotaDisabledAt int64  `json:"quotaDisabledAt,omitempty"`
+	Num             int    `json:"num"`
+	CreatedTime     int64  `json:"createdTime"`
+	UpdatedTime     int64  `json:"updatedTime,omitempty"`
+	Status          int    `json:"status"`
 }
 
 type NodeBackup struct {
 	ID            int64  `json:"id"`
 	Name          string `json:"name"`
+	Remark        string `json:"remark,omitempty"`
+	ExpiryTime    int64  `json:"expiryTime,omitempty"`
+	RenewalCycle  string `json:"renewalCycle,omitempty"`
 	Secret        string `json:"secret"`
 	ServerIP      string `json:"serverIp"`
 	ServerIPv4    string `json:"serverIpV4,omitempty"`
 	ServerIPv6    string `json:"serverIpV6,omitempty"`
+	ExtraIPs      string `json:"extraIPs,omitempty"`
 	Port          string `json:"port"`
 	InterfaceName string `json:"interfaceName,omitempty"`
 	Version       string `json:"version,omitempty"`
@@ -506,10 +548,24 @@ type TunnelRecord struct {
 	TrafficRatio float64
 }
 
+type UserQuotaView struct {
+	UserID           int64
+	DailyLimitGB     int64
+	MonthlyLimitGB   int64
+	DailyUsedBytes   int64
+	MonthlyUsedBytes int64
+	DayKey           int64
+	MonthKey         int64
+	DisabledByQuota  int
+	DisabledAt       int64
+	PausedForwardIDs string
+}
+
 // ForwardPortRecord is a forward port mapping used by control plane.
 type ForwardPortRecord struct {
 	NodeID int64
 	Port   int
+	InIP   string
 }
 
 // NodeRecord is a node view used by control plane.
@@ -519,6 +575,7 @@ type NodeRecord struct {
 	ServerIP      string
 	ServerIPv4    string
 	ServerIPv6    string
+	ExtraIPs      string
 	Status        int
 	PortRange     string
 	TCPListenAddr string
@@ -538,6 +595,7 @@ type ChainNodeRecord struct {
 	NodeName  string
 	Protocol  string
 	Strategy  string
+	ConnectIP string
 }
 
 type UserTunnelLimiterInfo struct {
@@ -566,6 +624,7 @@ type UserTunnelDetail struct {
 	UserID        int64
 	TunnelID      int64
 	TunnelName    string
+	Status        int
 	TunnelFlow    int
 	Flow          int64
 	InFlow        int64
@@ -592,3 +651,83 @@ type UserForwardDetail struct {
 	Status     int
 	CreatedAt  int64
 }
+
+type NodeMetric struct {
+	ID          int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	NodeID      int64   `gorm:"column:node_id;not null;index:idx_node_metric_node_time,priority:1" json:"nodeId"`
+	Timestamp   int64   `gorm:"not null;index:idx_node_metric_node_time,priority:2;index:idx_node_metric_time" json:"timestamp"`
+	CPUUsage    float64 `gorm:"column:cpu_usage" json:"cpuUsage"`
+	MemUsage    float64 `gorm:"column:mem_usage" json:"memoryUsage"`
+	DiskUsage   float64 `gorm:"column:disk_usage" json:"diskUsage"`
+	NetInBytes  int64   `gorm:"column:net_in_bytes" json:"netInBytes"`
+	NetOutBytes int64   `gorm:"column:net_out_bytes" json:"netOutBytes"`
+	NetInSpeed  int64   `gorm:"column:net_in_speed" json:"netInSpeed"`
+	NetOutSpeed int64   `gorm:"column:net_out_speed" json:"netOutSpeed"`
+	Load1       float64 `gorm:"column:load1" json:"load1"`
+	Load5       float64 `gorm:"column:load5" json:"load5"`
+	Load15      float64 `gorm:"column:load15" json:"load15"`
+	TCPConns    int64   `gorm:"column:tcp_conns" json:"tcpConns"`
+	UDPConns    int64   `gorm:"column:udp_conns" json:"udpConns"`
+	Uptime      int64   `gorm:"column:uptime" json:"uptime"`
+}
+
+func (NodeMetric) TableName() string { return "node_metric" }
+
+type TunnelMetric struct {
+	ID           int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	TunnelID     int64   `gorm:"column:tunnel_id;not null;index:idx_tunnel_metric_tunnel_time,priority:1" json:"tunnelId"`
+	NodeID       int64   `gorm:"column:node_id;not null;index:idx_tunnel_metric_tunnel_time,priority:2" json:"nodeId"`
+	Timestamp    int64   `gorm:"not null;index:idx_tunnel_metric_tunnel_time,priority:3;index:idx_tunnel_metric_time" json:"timestamp"`
+	BytesIn      int64   `gorm:"column:bytes_in" json:"bytesIn"`
+	BytesOut     int64   `gorm:"column:bytes_out" json:"bytesOut"`
+	Connections  int64   `gorm:"column:connections" json:"connections"`
+	Errors       int64   `gorm:"column:errors" json:"errors"`
+	AvgLatencyMs float64 `gorm:"column:avg_latency_ms" json:"avgLatencyMs"`
+}
+
+func (TunnelMetric) TableName() string { return "tunnel_metric" }
+
+type ServiceMonitor struct {
+	ID          int64  `gorm:"primaryKey;autoIncrement" json:"id"`
+	Name        string `gorm:"type:varchar(100);not null" json:"name"`
+	Type        string `gorm:"type:varchar(20);not null" json:"type"`
+	Target      string `gorm:"type:text;not null" json:"target"`
+	IntervalSec int    `gorm:"column:interval_sec;not null;default:60" json:"intervalSec"`
+	TimeoutSec  int    `gorm:"column:timeout_sec;not null;default:5" json:"timeoutSec"`
+	NodeID      int64  `gorm:"column:node_id;index" json:"nodeId"`
+	Enabled     int    `gorm:"not null;default:1" json:"enabled"`
+	CreatedTime int64  `gorm:"column:created_time;not null" json:"createdTime"`
+	UpdatedTime int64  `gorm:"column:updated_time;not null" json:"updatedTime"`
+}
+
+func (ServiceMonitor) TableName() string { return "service_monitor" }
+
+type ServiceMonitorResult struct {
+	ID           int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	MonitorID    int64   `gorm:"column:monitor_id;not null;index:idx_monitor_result_monitor_time,priority:1" json:"monitorId"`
+	NodeID       int64   `gorm:"column:node_id;not null;index" json:"nodeId"`
+	Timestamp    int64   `gorm:"not null;index:idx_monitor_result_monitor_time,priority:2" json:"timestamp"`
+	Success      int     `gorm:"not null" json:"success"`
+	LatencyMs    float64 `gorm:"column:latency_ms" json:"latencyMs"`
+	StatusCode   int     `gorm:"column:status_code" json:"statusCode"`
+	ErrorMessage string  `gorm:"column:error_message;type:text" json:"errorMessage"`
+}
+
+func (ServiceMonitorResult) TableName() string { return "service_monitor_result" }
+
+// TunnelQuality stores periodic probe results for a tunnel.
+// Unlike the old upsert model, rows accumulate for history/charting.
+// Old rows are pruned periodically (default: keep 24h).
+type TunnelQuality struct {
+	ID                 int64   `gorm:"primaryKey;autoIncrement" json:"id"`
+	TunnelID           int64   `gorm:"column:tunnel_id;not null;index:idx_tunnel_quality_tunnel_time,priority:1" json:"tunnelId"`
+	EntryToExitLatency float64 `gorm:"column:entry_to_exit_latency" json:"entryToExitLatency"`
+	ExitToBingLatency  float64 `gorm:"column:exit_to_bing_latency" json:"exitToBingLatency"`
+	EntryToExitLoss    float64 `gorm:"column:entry_to_exit_loss" json:"entryToExitLoss"`
+	ExitToBingLoss     float64 `gorm:"column:exit_to_bing_loss" json:"exitToBingLoss"`
+	Success            int     `gorm:"not null;default:1" json:"success"`
+	ErrorMessage       string  `gorm:"column:error_message;type:text" json:"errorMessage,omitempty"`
+	Timestamp          int64   `gorm:"not null;index:idx_tunnel_quality_tunnel_time,priority:2;index:idx_tunnel_quality_time" json:"timestamp"`
+}
+
+func (TunnelQuality) TableName() string { return "tunnel_quality" }

go-backend/internal/store/repo/repository_control.go

@@ -30,8 +30,15 @@ func (r *Repository) ListForwardsByTunnel(tunnelID int64) ([]model.ForwardRecord
 	if r == nil || r.db == nil {
 		return nil, errors.New("repository not initialized")
 	}
+	return r.ListForwardsByTunnelTx(r.db, tunnelID)
+}
+
+func (r *Repository) ListForwardsByTunnelTx(tx *gorm.DB, tunnelID int64) ([]model.ForwardRecord, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
 	var forwards []model.Forward
-	err := r.db.Where("tunnel_id = ?", tunnelID).Order("id ASC").Find(&forwards).Error
+	err := tx.Where("tunnel_id = ?", tunnelID).Order("id ASC").Find(&forwards).Error
 	if err != nil {
 		return nil, err
 	}
@@ -57,6 +64,7 @@ func (r *Repository) ListForwardsByTunnel(tunnelID int64) ([]model.ForwardRecord
 	return rows, nil
 }
 
+
 func (r *Repository) ListActiveTunnelIDsByNode(nodeID int64) ([]int64, error) {
 	if r == nil || r.db == nil {
 		return nil, errors.New("repository not initialized")
@@ -95,18 +103,57 @@ func (r *Repository) ListForwardPorts(forwardID int64) ([]model.ForwardPortRecor
 	if r == nil || r.db == nil {
 		return nil, errors.New("repository not initialized")
 	}
+	return r.ListForwardPortsTx(r.db, forwardID)
+}
+
+func (r *Repository) ListForwardPortsTx(tx *gorm.DB, forwardID int64) ([]model.ForwardPortRecord, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
 	var ports []model.ForwardPort
-	err := r.db.Where("forward_id = ?", forwardID).Order("id ASC").Find(&ports).Error
+	err := tx.Where("forward_id = ?", forwardID).Order("id ASC").Find(&ports).Error
 	if err != nil {
 		return nil, err
 	}
 	rows := make([]model.ForwardPortRecord, 0, len(ports))
 	for _, p := range ports {
-		rows = append(rows, model.ForwardPortRecord{NodeID: p.NodeID, Port: p.Port})
+		inIP := ""
+		if p.InIP.Valid {
+			inIP = p.InIP.String
+		}
+		rows = append(rows, model.ForwardPortRecord{NodeID: p.NodeID, Port: p.Port, InIP: inIP})
 	}
 	return rows, nil
 }
 
+
+func (r *Repository) HasOtherForwardOnNodePort(nodeID int64, port int, currentForwardID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	return r.HasOtherForwardOnNodePortTx(r.db, nodeID, port, currentForwardID)
+}
+
+func (r *Repository) HasOtherForwardOnNodePortTx(tx *gorm.DB, nodeID int64, port int, currentForwardID int64) (bool, error) {
+	if tx == nil {
+		return false, errors.New("database unavailable")
+	}
+	if nodeID <= 0 || port <= 0 {
+		return false, nil
+	}
+
+	var count int64
+	err := tx.Model(&model.ForwardPort{}).
+		Where("node_id = ? AND port = ? AND forward_id <> ?", nodeID, port, currentForwardID).
+		Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+
+	return count > 0, nil
+}
+
+
 func (r *Repository) GetTunnelOutProtocol(tunnelID int64) (string, error) {
 	if r == nil || r.db == nil {
 		return "", errors.New("repository not initialized")
@@ -177,6 +224,9 @@ func nodeRecordFromModel(n *model.Node) *model.NodeRecord {
 	if n.ServerIPV6.Valid {
 		rec.ServerIPv6 = strings.TrimSpace(n.ServerIPV6.String)
 	}
+	if n.ExtraIPs.Valid {
+		rec.ExtraIPs = strings.TrimSpace(n.ExtraIPs.String)
+	}
 	if n.InterfaceName.Valid {
 		rec.InterfaceName = strings.TrimSpace(n.InterfaceName.String)
 	}
@@ -289,10 +339,11 @@ func (r *Repository) ListChainNodesForTunnel(tunnelID int64) ([]model.ChainNodeR
 		Name      sql.NullString
 		Protocol  sql.NullString
 		Strategy  sql.NullString
+		ConnectIP sql.NullString
 	}
 	var rows []row
 	err := r.db.Model(&model.ChainTunnel{}).
-		Select("chain_tunnel.chain_type, chain_tunnel.inx, chain_tunnel.node_id, chain_tunnel.port, node.name, chain_tunnel.protocol, chain_tunnel.strategy").
+		Select("chain_tunnel.chain_type, chain_tunnel.inx, chain_tunnel.node_id, chain_tunnel.port, node.name, chain_tunnel.protocol, chain_tunnel.strategy, chain_tunnel.connect_ip").
 		Joins("LEFT JOIN node ON node.id = chain_tunnel.node_id").
 		Where("chain_tunnel.tunnel_id = ?", tunnelID).
 		Order("chain_tunnel.chain_type ASC, chain_tunnel.inx ASC, chain_tunnel.id ASC").
@@ -337,6 +388,9 @@ func (r *Repository) ListChainNodesForTunnel(tunnelID int64) ([]model.ChainNodeR
 		} else {
 			item.Strategy = row.Strategy.String
 		}
+		if row.ConnectIP.Valid {
+			item.ConnectIP = row.ConnectIP.String
+		}
 		result = append(result, item)
 	}
 	return result, nil

go-backend/internal/store/repo/repository_flow.go

@@ -161,6 +161,64 @@ func (r *Repository) ForwardExists(forwardID int64) (bool, error) {
 	return count > 0, nil
 }
 
+// MapForwardIDsToTunnelIDs returns a mapping from forward.id to forward.tunnel_id.
+// Missing forward IDs are omitted from the returned map.
+func (r *Repository) MapForwardIDsToTunnelIDs(forwardIDs []int64) (map[int64]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if len(forwardIDs) == 0 {
+		return map[int64]int64{}, nil
+	}
+
+	// Deduplicate and filter invalid IDs.
+	ids := make([]int64, 0, len(forwardIDs))
+	seen := make(map[int64]struct{}, len(forwardIDs))
+	for _, id := range forwardIDs {
+		if id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		ids = append(ids, id)
+	}
+	if len(ids) == 0 {
+		return map[int64]int64{}, nil
+	}
+
+	type row struct {
+		ID       int64 `gorm:"column:id"`
+		TunnelID int64 `gorm:"column:tunnel_id"`
+	}
+
+	out := make(map[int64]int64, len(ids))
+	const chunkSize = 500
+	for start := 0; start < len(ids); start += chunkSize {
+		end := start + chunkSize
+		if end > len(ids) {
+			end = len(ids)
+		}
+
+		var rows []row
+		if err := r.db.Model(&model.Forward{}).
+			Select("id", "tunnel_id").
+			Where("id IN ?", ids[start:end]).
+			Find(&rows).Error; err != nil {
+			return nil, err
+		}
+		for _, r := range rows {
+			if r.ID <= 0 || r.TunnelID <= 0 {
+				continue
+			}
+			out[r.ID] = r.TunnelID
+		}
+	}
+
+	return out, nil
+}
+
 func (r *Repository) SpeedLimitExists(id int64) (bool, error) {
 	if r == nil || r.db == nil {
 		return false, errors.New("repository not initialized")

go-backend/internal/store/repo/repository_migrate_test.go

@@ -3,13 +3,61 @@ package repo
 import (
 	"database/sql"
 	"errors"
+	"strings"
 	"testing"
 
 	gsqlite "github.com/glebarez/sqlite"
+	"go-backend/internal/store/model"
 	"gorm.io/gorm"
 	"gorm.io/gorm/logger"
 )
 
+func TestPrepareSQLiteLegacyColumnsAddsNodeMetadataColumns(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`
+		CREATE TABLE node (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			name VARCHAR(100) NOT NULL,
+			secret VARCHAR(100) NOT NULL,
+			server_ip VARCHAR(100) NOT NULL,
+			port TEXT NOT NULL,
+			interface_name VARCHAR(200),
+			version VARCHAR(100),
+			http INTEGER NOT NULL DEFAULT 0,
+			tls INTEGER NOT NULL DEFAULT 0,
+			socks INTEGER NOT NULL DEFAULT 0,
+			created_time INTEGER NOT NULL,
+			updated_time INTEGER,
+			status INTEGER NOT NULL
+		)
+	`).Error; err != nil {
+		t.Fatalf("create legacy node table: %v", err)
+	}
+
+	if err := prepareSQLiteLegacyColumns(db); err != nil {
+		t.Fatalf("prepareSQLiteLegacyColumns: %v", err)
+	}
+
+	m := db.Migrator()
+	for _, field := range []string{"Remark", "ExpiryTime", "RenewalCycle"} {
+		if !m.HasColumn(&model.Node{}, field) {
+			t.Fatalf("expected node.%s column to exist", field)
+		}
+	}
+}
+
 func TestMigrateSchemaRunsPostgresIDRepairEvenAtCurrentVersion(t *testing.T) {
 	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
 		Logger: logger.Default.LogMode(logger.Silent),
@@ -250,3 +298,115 @@ func TestMigrateSchemaClearsSpeedLimitTunnelBinding(t *testing.T) {
 		t.Fatalf("expected schema version %d, got %d", currentSchemaVersion, schemaVersion)
 	}
 }
+
+func TestMigrateSchemaRunsTrafficInt64MigrationForLegacySchema(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 4).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	called := 0
+	originalMigrate := migratePostgresTrafficInt64ColumnsFn
+	migratePostgresTrafficInt64ColumnsFn = func(db *gorm.DB) error {
+		called++
+		return nil
+	}
+	t.Cleanup(func() {
+		migratePostgresTrafficInt64ColumnsFn = originalMigrate
+	})
+
+	if err := migrateSchema(db); err != nil {
+		t.Fatalf("migrateSchema: %v", err)
+	}
+
+	if called != 1 {
+		t.Fatalf("expected traffic bigint migration to run once, got %d", called)
+	}
+
+	var schemaVersion int
+	if err := db.Raw(`SELECT version FROM schema_version LIMIT 1`).Row().Scan(&schemaVersion); err != nil {
+		t.Fatalf("query schema_version: %v", err)
+	}
+	if schemaVersion != currentSchemaVersion {
+		t.Fatalf("expected schema version %d, got %d", currentSchemaVersion, schemaVersion)
+	}
+}
+
+func TestMigrateSchemaReturnsTrafficInt64MigrationError(t *testing.T) {
+	db, err := gorm.Open(gsqlite.Open(":memory:"), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		t.Fatalf("open sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		sqlDB, _ := db.DB()
+		if sqlDB != nil {
+			_ = sqlDB.Close()
+		}
+	})
+
+	if err := db.Exec(`CREATE TABLE schema_version (version INTEGER NOT NULL DEFAULT 0)`).Error; err != nil {
+		t.Fatalf("create schema_version: %v", err)
+	}
+	if err := db.Exec(`INSERT INTO schema_version(version) VALUES(?)`, 4).Error; err != nil {
+		t.Fatalf("seed schema_version: %v", err)
+	}
+
+	originalIDRepair := ensurePostgresIDDefaultsFn
+	ensurePostgresIDDefaultsFn = func(db *gorm.DB) error {
+		return nil
+	}
+	t.Cleanup(func() {
+		ensurePostgresIDDefaultsFn = originalIDRepair
+	})
+
+	wantErr := errors.New("traffic bigint migration failed")
+	originalMigrate := migratePostgresTrafficInt64ColumnsFn
+	migratePostgresTrafficInt64ColumnsFn = func(db *gorm.DB) error {
+		return wantErr
+	}
+	t.Cleanup(func() {
+		migratePostgresTrafficInt64ColumnsFn = originalMigrate
+	})
+
+	err = migrateSchema(db)
+	if !errors.Is(err, wantErr) {
+		t.Fatalf("expected error %v, got %v", wantErr, err)
+	}
+}
+
+func TestAlterPostgresColumnToBigIntIfNeededValidatesNames(t *testing.T) {
+	if err := alterPostgresColumnToBigIntIfNeeded(nil, "peer_share", "max_bandwidth"); err == nil || !strings.Contains(err.Error(), "nil db") {
+		t.Fatalf("expected nil db error, got %v", err)
+	}
+	if err := alterPostgresColumnToBigIntIfNeeded(&gorm.DB{}, "", "max_bandwidth"); err == nil || !strings.Contains(err.Error(), "empty table or column name") {
+		t.Fatalf("expected empty name error, got %v", err)
+	}
+	if err := alterPostgresColumnToBigIntIfNeeded(&gorm.DB{}, "peer_share", ""); err == nil || !strings.Contains(err.Error(), "empty table or column name") {
+		t.Fatalf("expected empty name error, got %v", err)
+	}
+}

go-backend/internal/store/repo/repository_monitor_nodes.go

@@ -0,0 +1,19 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) ListMonitorNodes() ([]model.Node, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var nodes []model.Node
+	err := r.db.Select("id", "inx", "name", "status", "updated_time").
+		Where("is_remote = ?", 0).
+		Order("inx ASC, id ASC").
+		Find(&nodes).Error
+	return nodes, err
+}

go-backend/internal/store/repo/repository_monitor_permission.go

@@ -0,0 +1,54 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+
+	"gorm.io/gorm/clause"
+)
+
+func (r *Repository) InsertMonitorPermission(userID int64, now int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil
+	}
+	row := model.MonitorPermission{UserID: userID, CreatedTime: now}
+	return r.db.Clauses(clause.OnConflict{DoNothing: true}).Create(&row).Error
+}
+
+func (r *Repository) DeleteMonitorPermission(userID int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil
+	}
+	return r.db.Where("user_id = ?", userID).Delete(&model.MonitorPermission{}).Error
+}
+
+func (r *Repository) HasMonitorPermission(userID int64) (bool, error) {
+	if r == nil || r.db == nil {
+		return false, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return false, nil
+	}
+	var count int64
+	err := r.db.Model(&model.MonitorPermission{}).Where("user_id = ?", userID).Count(&count).Error
+	if err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
+func (r *Repository) ListMonitorPermissions() ([]model.MonitorPermission, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var items []model.MonitorPermission
+	err := r.db.Order("id ASC").Find(&items).Error
+	return items, err
+}

go-backend/internal/store/repo/repository_monitor_tunnels.go

@@ -0,0 +1,18 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+func (r *Repository) ListMonitorTunnels() ([]model.Tunnel, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var tunnels []model.Tunnel
+	err := r.db.Select("id", "inx", "name", "status", "updated_time").
+		Order("inx ASC, id ASC").
+		Find(&tunnels).Error
+	return tunnels, err
+}

go-backend/internal/store/repo/repository_monitoring_test.go

@@ -0,0 +1,134 @@
+package repo
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+func TestGetTunnelMetricsAggregatedSumsAcrossNodes(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	if err := r.InsertTunnelMetric(&model.TunnelMetric{
+		TunnelID:  1,
+		NodeID:    1,
+		Timestamp: ts,
+		BytesIn:   100,
+		BytesOut:  200,
+	}); err != nil {
+		t.Fatalf("insert tunnel metric n1: %v", err)
+	}
+	if err := r.InsertTunnelMetric(&model.TunnelMetric{
+		TunnelID:  1,
+		NodeID:    2,
+		Timestamp: ts,
+		BytesIn:   300,
+		BytesOut:  400,
+	}); err != nil {
+		t.Fatalf("insert tunnel metric n2: %v", err)
+	}
+
+	metrics, err := r.GetTunnelMetricsAggregated(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get aggregated tunnel metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 aggregated point, got %d", len(metrics))
+	}
+	if metrics[0].Timestamp != ts {
+		t.Fatalf("expected timestamp %d, got %d", ts, metrics[0].Timestamp)
+	}
+	if metrics[0].BytesIn != 400 {
+		t.Fatalf("expected bytesIn 400, got %d", metrics[0].BytesIn)
+	}
+	if metrics[0].BytesOut != 600 {
+		t.Fatalf("expected bytesOut 600, got %d", metrics[0].BytesOut)
+	}
+}
+
+func TestUpsertTunnelMetricBucketsAggregatesDuplicateKeysInBatch(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	items := []*model.TunnelMetric{
+		{TunnelID: 1, NodeID: 1, Timestamp: ts, BytesIn: 10, BytesOut: 20},
+		{TunnelID: 1, NodeID: 1, Timestamp: ts, BytesIn: 30, BytesOut: 40},
+	}
+	if err := r.UpsertTunnelMetricBuckets(items); err != nil {
+		t.Fatalf("upsert buckets: %v", err)
+	}
+
+	rows, err := r.GetTunnelMetrics(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get tunnel metrics: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("expected 1 stored row, got %d", len(rows))
+	}
+	if rows[0].BytesIn != 40 {
+		t.Fatalf("expected bytesIn 40, got %d", rows[0].BytesIn)
+	}
+	if rows[0].BytesOut != 60 {
+		t.Fatalf("expected bytesOut 60, got %d", rows[0].BytesOut)
+	}
+}
+
+func TestUpsertTunnelMetricBucketsIsSafeUnderConcurrency(t *testing.T) {
+	r, err := Open(":memory:")
+	if err != nil {
+		t.Fatalf("open repo: %v", err)
+	}
+	defer r.Close()
+
+	ts := time.Now().UnixMilli()
+
+	const workers = 20
+	const perWorkerIn = int64(5)
+	const perWorkerOut = int64(7)
+
+	var wg sync.WaitGroup
+	wg.Add(workers)
+	for i := 0; i < workers; i++ {
+		go func() {
+			defer wg.Done()
+			_ = r.UpsertTunnelMetricBuckets([]*model.TunnelMetric{{
+				TunnelID:  1,
+				NodeID:    1,
+				Timestamp: ts,
+				BytesIn:   perWorkerIn,
+				BytesOut:  perWorkerOut,
+			}})
+		}()
+	}
+	wg.Wait()
+
+	rows, err := r.GetTunnelMetrics(1, ts-1000, ts+1000)
+	if err != nil {
+		t.Fatalf("get tunnel metrics: %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("expected 1 stored row, got %d", len(rows))
+	}
+
+	wantIn := int64(workers) * perWorkerIn
+	wantOut := int64(workers) * perWorkerOut
+	if rows[0].BytesIn != wantIn {
+		t.Fatalf("expected bytesIn %d, got %d", wantIn, rows[0].BytesIn)
+	}
+	if rows[0].BytesOut != wantOut {
+		t.Fatalf("expected bytesOut %d, got %d", wantOut, rows[0].BytesOut)
+	}
+}

go-backend/internal/store/repo/repository_mutations.go

@@ -3,6 +3,7 @@ package repo
 import (
 	"database/sql"
 	"errors"
+	"fmt"
 	"sort"
 	"strconv"
 	"strings"
@@ -144,6 +145,9 @@ func (r *Repository) DeleteUserCascade(userID int64) error {
 		if err := tx.Where("user_id = ?", userID).Delete(&model.StatisticsFlow{}).Error; err != nil {
 			return err
 		}
+		if err := tx.Where("user_id = ?", userID).Delete(&model.UserQuota{}).Error; err != nil {
+			return err
+		}
 		return tx.Where("id = ?", userID).Delete(&model.User{}).Error
 	})
 }
@@ -196,16 +200,20 @@ func (r *Repository) GetUserDefaultsForTunnel(userID int64) (flow int64, num int
 	return user.Flow, user.Num, user.ExpTime, user.FlowResetTime, nil
 }
 
-func (r *Repository) CreateNode(name, secret, serverIP string, serverIPV4, serverIPV6, port, interfaceName, version interface{}, httpFlag, tlsFlag, socksFlag int, now int64, status int, tcpAddr, udpAddr string, inx, isRemote int, remoteURL, remoteToken, remoteConfig interface{}) error {
+func (r *Repository) CreateNode(name, secret, serverIP string, serverIPV4, serverIPV6, port, interfaceName, version, remark, expiryTime, renewalCycle interface{}, httpFlag, tlsFlag, socksFlag int, now int64, status int, tcpAddr, udpAddr string, inx, isRemote int, remoteURL, remoteToken, remoteConfig, extraIPs interface{}) error {
 	if r == nil || r.db == nil {
 		return errors.New("repository not initialized")
 	}
 	node := model.Node{
 		Name:          name,
+		Remark:        nullStringFromInterface(remark),
+		ExpiryTime:    nullInt64FromInterface(expiryTime),
+		RenewalCycle:  nullStringFromInterface(renewalCycle),
 		Secret:        secret,
 		ServerIP:      serverIP,
 		ServerIPV4:    nullStringFromInterface(serverIPV4),
 		ServerIPV6:    nullStringFromInterface(serverIPV6),
+		ExtraIPs:      nullStringFromInterface(extraIPs),
 		Port:          stringFromInterface(port),
 		InterfaceName: nullStringFromInterface(interfaceName),
 		Version:       nullStringFromInterface(version),
@@ -238,25 +246,30 @@ func (r *Repository) GetNodeStatusFields(nodeID int64) (status, httpFlag, tlsFla
 	return node.Status, node.HTTP, node.TLS, node.Socks, nil
 }
 
-func (r *Repository) UpdateNode(id int64, name, serverIP string, serverIPV4, serverIPV6, port, interfaceName interface{}, httpFlag, tlsFlag, socksFlag int, tcpAddr, udpAddr string, now int64) error {
+func (r *Repository) UpdateNode(id int64, name, serverIP string, serverIPV4, serverIPV6, port, interfaceName, extraIPs, remark, expiryTime, renewalCycle interface{}, httpFlag, tlsFlag, socksFlag int, tcpAddr, udpAddr string, now int64) error {
 	if r == nil || r.db == nil {
 		return errors.New("repository not initialized")
 	}
 	return r.db.Model(&model.Node{}).
 		Where("id = ?", id).
 		Updates(map[string]interface{}{
-			"name":            name,
-			"server_ip":       serverIP,
-			"server_ip_v4":    nullStringFromInterface(serverIPV4),
-			"server_ip_v6":    nullStringFromInterface(serverIPV6),
-			"port":            stringFromInterface(port),
-			"interface_name":  nullStringFromInterface(interfaceName),
-			"http":            httpFlag,
-			"tls":             tlsFlag,
-			"socks":           socksFlag,
-			"tcp_listen_addr": tcpAddr,
-			"udp_listen_addr": udpAddr,
-			"updated_time":    sql.NullInt64{Int64: now, Valid: true},
+			"name":                      name,
+			"remark":                    nullStringFromInterface(remark),
+			"expiry_time":               nullInt64FromInterface(expiryTime),
+			"renewal_cycle":             nullStringFromInterface(renewalCycle),
+			"server_ip":                 serverIP,
+			"server_ip_v4":              nullStringFromInterface(serverIPV4),
+			"server_ip_v6":              nullStringFromInterface(serverIPV6),
+			"extra_ips":                 nullStringFromInterface(extraIPs),
+			"port":                      stringFromInterface(port),
+			"interface_name":            nullStringFromInterface(interfaceName),
+			"http":                      httpFlag,
+			"tls":                       tlsFlag,
+			"socks":                     socksFlag,
+			"tcp_listen_addr":           tcpAddr,
+			"udp_listen_addr":           udpAddr,
+			"updated_time":              sql.NullInt64{Int64: now, Valid: true},
+			"expiry_reminder_dismissed": 0,
 		}).Error
 }
 
@@ -296,6 +309,15 @@ func (r *Repository) UpdateNodeOrder(nodeID int64, inx int, now int64) {
 		}).Error
 }
 
+func (r *Repository) UpdateNodeExpiryReminderDismissed(nodeID int64, dismissed int) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	return r.db.Model(&model.Node{}).
+		Where("id = ?", nodeID).
+		Update("expiry_reminder_dismissed", dismissed).Error
+}
+
 func (r *Repository) DeleteNodeCascade(nodeID int64) error {
 	if r == nil || r.db == nil {
 		return errors.New("repository not initialized")
@@ -395,7 +417,7 @@ func (r *Repository) DeleteChainTunnelsByTunnelTx(tx *gorm.DB, tunnelID int64) e
 	return tx.Where("tunnel_id = ?", tunnelID).Delete(&model.ChainTunnel{}).Error
 }
 
-func (r *Repository) CreateChainTunnelTx(tx *gorm.DB, tunnelID int64, chainType string, nodeID int64, port sql.NullInt64, strategy string, inx int, protocol string) error {
+func (r *Repository) CreateChainTunnelTx(tx *gorm.DB, tunnelID int64, chainType string, nodeID int64, port sql.NullInt64, strategy string, inx int, protocol string, connectIp string) error {
 	if tx == nil {
 		return errors.New("database unavailable")
 	}
@@ -407,6 +429,7 @@ func (r *Repository) CreateChainTunnelTx(tx *gorm.DB, tunnelID int64, chainType
 		Strategy:  nullStringFromInterface(strategy),
 		Inx:       nullInt64FromInterface(inx),
 		Protocol:  nullStringFromInterface(protocol),
+		ConnectIP: sql.NullString{String: connectIp, Valid: connectIp != ""},
 	}
 	return tx.Create(&ct).Error
 }
@@ -692,6 +715,7 @@ func (r *Repository) DeleteForwardCascade(forwardID int64) error {
 func (r *Repository) ReplaceForwardPorts(forwardID int64, entries []struct {
 	NodeID int64
 	Port   int
+	InIP   string
 }) error {
 	if r == nil || r.db == nil {
 		return errors.New("repository not initialized")
@@ -705,12 +729,29 @@ func (r *Repository) ReplaceForwardPorts(forwardID int64, entries []struct {
 		}
 		rows := make([]model.ForwardPort, 0, len(entries))
 		for _, e := range entries {
-			rows = append(rows, model.ForwardPort{ForwardID: forwardID, NodeID: e.NodeID, Port: e.Port})
+			rows = append(rows, model.ForwardPort{
+				ForwardID: forwardID,
+				NodeID:    e.NodeID,
+				Port:      e.Port,
+				InIP:      sql.NullString{String: e.InIP, Valid: e.InIP != ""},
+			})
 		}
 		return tx.Create(&rows).Error
 	})
 }
 
+func (r *Repository) UpdateForwardPortBindIP(forwardID, nodeID int64, port int, inIP string) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if forwardID <= 0 || nodeID <= 0 || port <= 0 {
+		return nil
+	}
+	return r.db.Model(&model.ForwardPort{}).
+		Where("forward_id = ? AND node_id = ? AND port = ?", forwardID, nodeID, port).
+		Update("in_ip", sql.NullString{String: inIP, Valid: strings.TrimSpace(inIP) != ""}).Error
+}
+
 func (r *Repository) RollbackForwardFields(id, userID int64, userName, name string, tunnelID int64, remoteAddr, strategy string, status int, speedID interface{}, now int64) {
 	if r == nil || r.db == nil {
 		return
@@ -1168,7 +1209,7 @@ func (r *Repository) EnsureUserTunnelGrant(userID, tunnelID int64) (int64, bool,
 	return ut.ID, true, nil
 }
 
-func (r *Repository) CreateForwardTx(userID int64, userName, name string, tunnelID int64, remoteAddr, strategy string, now int64, inx int, entryNodeIDs []int64, port int, speedID interface{}) (int64, error) {
+func (r *Repository) CreateForwardTx(userID int64, userName, name string, tunnelID int64, remoteAddr, strategy string, now int64, inx int, entryNodeIDs []int64, port int, inIp string, speedID interface{}) (int64, error) {
 	if r == nil || r.db == nil {
 		return 0, errors.New("repository not initialized")
 	}
@@ -1198,6 +1239,7 @@ func (r *Repository) CreateForwardTx(userID int64, userName, name string, tunnel
 				ForwardID: forwardID,
 				NodeID:    nodeID,
 				Port:      port,
+				InIP:      sql.NullString{String: inIp, Valid: inIp != ""},
 			}
 			if err := tx.Create(&fp).Error; err != nil {
 				return err
@@ -1455,3 +1497,59 @@ func (r *Repository) ReplaceUserGroupsByUserID(userID int64, newGroupIDs []int64
 	}
 	return affectedGroupIDs, nil
 }
+
+func (r *Repository) AdvanceNodeRenewalCycles(now int64) (int, error) {
+	if r == nil || r.db == nil {
+		return 0, nil
+	}
+
+	var nodes []model.Node
+	if err := r.db.Where("renewal_cycle IS NOT NULL AND renewal_cycle != '' AND expiry_time IS NOT NULL").Find(&nodes).Error; err != nil {
+		return 0, fmt.Errorf("list nodes with renewal cycle: %w", err)
+	}
+
+	advanced := 0
+	for _, node := range nodes {
+		if !node.ExpiryTime.Valid || node.ExpiryTime.Int64 <= 0 {
+			continue
+		}
+
+		cycleMonths := 0
+		switch node.RenewalCycle.String {
+		case "month":
+			cycleMonths = 1
+		case "quarter":
+			cycleMonths = 3
+		case "year":
+			cycleMonths = 12
+		default:
+			continue
+		}
+
+		anchorTime := node.ExpiryTime.Int64
+		for anchorTime <= now {
+			nextAnchor := advanceByMonths(anchorTime, cycleMonths)
+			if nextAnchor <= anchorTime {
+				break
+			}
+			anchorTime = nextAnchor
+		}
+
+		if anchorTime == node.ExpiryTime.Int64 {
+			continue
+		}
+
+		if err := r.db.Model(&model.Node{}).Where("id = ?", node.ID).Update("expiry_time", anchorTime).Error; err != nil {
+			continue
+		}
+		advanced++
+	}
+
+	return advanced, nil
+}
+
+func advanceByMonths(timestamp int64, months int) int64 {
+	t := time.Unix(timestamp/1000, 0)
+	next := t.AddDate(0, months, 0)
+	return next.UnixMilli()
+}

go-backend/internal/store/repo/repository_tunnel_quality.go

@@ -0,0 +1,98 @@
+package repo
+
+import (
+	"errors"
+
+	"go-backend/internal/store/model"
+)
+
+// InsertTunnelQuality appends a tunnel quality probe result.
+// (Follows the same pattern as InsertServiceMonitorResult.)
+func (r *Repository) InsertTunnelQuality(q *model.TunnelQuality) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if q == nil || q.TunnelID <= 0 {
+		return nil
+	}
+	return r.db.Create(q).Error
+}
+
+// GetTunnelQualityHistory returns quality probe results for a tunnel
+// within a time range, ordered by timestamp ascending.
+// (Mirrors GetServiceMonitorResults pattern.)
+func (r *Repository) GetTunnelQualityHistory(tunnelID int64, startMs, endMs int64) ([]model.TunnelQuality, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var results []model.TunnelQuality
+	err := r.db.Where("tunnel_id = ? AND timestamp >= ? AND timestamp <= ?", tunnelID, startMs, endMs).
+		Order("timestamp ASC").
+		Find(&results).Error
+	return results, err
+}
+
+// GetLatestTunnelQualities returns the newest quality result per tunnel_id.
+// (Mirrors GetLatestServiceMonitorResults pattern.)
+func (r *Repository) GetLatestTunnelQualities() ([]model.TunnelQuality, error) {
+	if r == nil || r.db == nil {
+		return nil, nil
+	}
+
+	var results []model.TunnelQuality
+
+	// Use window function (works on modern SQLite 3.25+ and PostgreSQL).
+	q := `
+		SELECT id, tunnel_id, entry_to_exit_latency, exit_to_bing_latency,
+		       entry_to_exit_loss, exit_to_bing_loss, success, error_message, timestamp
+		FROM (
+			SELECT *, ROW_NUMBER() OVER (PARTITION BY tunnel_id ORDER BY timestamp DESC, id DESC) AS rn
+			FROM tunnel_quality
+		) t
+		WHERE rn = 1
+		ORDER BY tunnel_id ASC
+	`
+	if err := r.db.Raw(q).Scan(&results).Error; err == nil {
+		return results, nil
+	}
+
+	// Fallback for older SQLite
+	results = nil
+	err := r.db.Order("timestamp DESC, id DESC").Limit(5000).Find(&results).Error
+	if err != nil {
+		return nil, err
+	}
+
+	seen := make(map[int64]struct{}, len(results))
+	out := make([]model.TunnelQuality, 0, len(results))
+	for _, row := range results {
+		if row.TunnelID <= 0 {
+			continue
+		}
+		if _, ok := seen[row.TunnelID]; ok {
+			continue
+		}
+		seen[row.TunnelID] = struct{}{}
+		out = append(out, row)
+	}
+	return out, nil
+}
+
+// PruneTunnelQualityResults deletes quality results older than the given timestamp.
+// (Mirrors PruneServiceMonitorResults pattern.)
+func (r *Repository) PruneTunnelQualityResults(olderThanMs int64) error {
+	if r == nil || r.db == nil {
+		return nil
+	}
+	return r.db.Where("timestamp < ?", olderThanMs).Delete(&model.TunnelQuality{}).Error
+}
+
+// ListEnabledTunnelIDs returns IDs of all tunnels with status=1.
+func (r *Repository) ListEnabledTunnelIDs() ([]int64, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var ids []int64
+	err := r.db.Model(&model.Tunnel{}).Where("status = ?", 1).Pluck("id", &ids).Error
+	return ids, err
+}

go-backend/internal/store/repo/repository_user_quota.go

@@ -0,0 +1,378 @@
+package repo
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"go-backend/internal/store/model"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+const userQuotaBytesPerGB int64 = 1024 * 1024 * 1024
+
+type UserQuotaRelease struct {
+	UserID      int64
+	ForwardIDs  []int64
+	UnblockUser bool
+}
+
+func userQuotaWindowKeys(now time.Time) (int64, int64) {
+	return int64(now.Year()*10000 + int(now.Month())*100 + now.Day()), int64(now.Year()*100 + int(now.Month()))
+}
+
+func cloneUserQuotaView(q model.UserQuota) *model.UserQuotaView {
+	return &model.UserQuotaView{
+		UserID:           q.UserID,
+		DailyLimitGB:     q.DailyLimitGB,
+		MonthlyLimitGB:   q.MonthlyLimitGB,
+		DailyUsedBytes:   q.DailyUsedBytes,
+		MonthlyUsedBytes: q.MonthlyUsedBytes,
+		DayKey:           q.DayKey,
+		MonthKey:         q.MonthKey,
+		DisabledByQuota:  q.DisabledByQuota,
+		DisabledAt:       q.DisabledAt,
+		PausedForwardIDs: q.PausedForwardIDs,
+	}
+}
+
+func normalizeUserQuotaView(view *model.UserQuotaView, now time.Time) *model.UserQuotaView {
+	if view == nil {
+		return nil
+	}
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	out := *view
+	if out.DayKey != dayKey {
+		out.DayKey = dayKey
+		out.DailyUsedBytes = 0
+	}
+	if out.MonthKey != monthKey {
+		out.MonthKey = monthKey
+		out.MonthlyUsedBytes = 0
+	}
+	return &out
+}
+
+func userQuotaExceeded(view *model.UserQuotaView) bool {
+	if view == nil {
+		return false
+	}
+	if view.DailyLimitGB > 0 && view.DailyUsedBytes >= view.DailyLimitGB*userQuotaBytesPerGB {
+		return true
+	}
+	if view.MonthlyLimitGB > 0 && view.MonthlyUsedBytes >= view.MonthlyLimitGB*userQuotaBytesPerGB {
+		return true
+	}
+	return false
+}
+
+func parsePausedForwardIDs(raw string) []int64 {
+	parts := strings.Split(strings.TrimSpace(raw), ",")
+	out := make([]int64, 0, len(parts))
+	seen := make(map[int64]struct{}, len(parts))
+	for _, part := range parts {
+		id, err := strconv.ParseInt(strings.TrimSpace(part), 10, 64)
+		if err != nil || id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		out = append(out, id)
+	}
+	return out
+}
+
+func joinPausedForwardIDs(ids []int64) string {
+	if len(ids) == 0 {
+		return ""
+	}
+	parts := make([]string, 0, len(ids))
+	seen := make(map[int64]struct{}, len(ids))
+	for _, id := range ids {
+		if id <= 0 {
+			continue
+		}
+		if _, ok := seen[id]; ok {
+			continue
+		}
+		seen[id] = struct{}{}
+		parts = append(parts, strconv.FormatInt(id, 10))
+	}
+	return strings.Join(parts, ",")
+}
+
+func (r *Repository) loadOrCreateUserQuotaTx(tx *gorm.DB, userID int64, now time.Time) (*model.UserQuota, error) {
+	if tx == nil {
+		return nil, errors.New("database unavailable")
+	}
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	q := &model.UserQuota{}
+	err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).Where("user_id = ?", userID).First(q).Error
+	if err == nil {
+		return q, nil
+	}
+	if !errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, err
+	}
+	nowMs := now.UnixMilli()
+	q = &model.UserQuota{
+		UserID:           userID,
+		DayKey:           dayKey,
+		MonthKey:         monthKey,
+		CreatedTime:      nowMs,
+		UpdatedTime:      nowMs,
+		PausedForwardIDs: "",
+	}
+	if err := tx.Create(q).Error; err != nil {
+		return nil, err
+	}
+	return q, nil
+}
+
+func applyUserQuotaWindowRoll(q *model.UserQuota, now time.Time) bool {
+	if q == nil {
+		return false
+	}
+	changed := false
+	dayKey, monthKey := userQuotaWindowKeys(now)
+	if q.DayKey != dayKey {
+		q.DayKey = dayKey
+		q.DailyUsedBytes = 0
+		changed = true
+	}
+	if q.MonthKey != monthKey {
+		q.MonthKey = monthKey
+		q.MonthlyUsedBytes = 0
+		changed = true
+	}
+	return changed
+}
+
+func (r *Repository) SaveUserQuotaConfigTx(tx *gorm.DB, userID, dailyLimitGB, monthlyLimitGB int64, now int64) error {
+	if tx == nil {
+		return errors.New("database unavailable")
+	}
+	if userID <= 0 {
+		return errors.New("user id is required")
+	}
+	if dailyLimitGB < 0 || monthlyLimitGB < 0 {
+		return errors.New("quota limit cannot be negative")
+	}
+	current := time.UnixMilli(now)
+	q, err := r.loadOrCreateUserQuotaTx(tx, userID, current)
+	if err != nil {
+		return err
+	}
+	updates := map[string]interface{}{
+		"daily_limit_gb":   dailyLimitGB,
+		"monthly_limit_gb": monthlyLimitGB,
+		"updated_time":     now,
+	}
+	if q.DayKey == 0 || q.MonthKey == 0 {
+		dayKey, monthKey := userQuotaWindowKeys(current)
+		updates["day_key"] = dayKey
+		updates["month_key"] = monthKey
+	}
+	return tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(updates).Error
+}
+
+func (r *Repository) ListUserQuotaViewsByUserIDs(userIDs []int64, now time.Time) (map[int64]*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	out := make(map[int64]*model.UserQuotaView)
+	if len(userIDs) == 0 {
+		return out, nil
+	}
+	var rows []model.UserQuota
+	if err := r.db.Where("user_id IN ?", userIDs).Find(&rows).Error; err != nil {
+		return nil, err
+	}
+	for _, row := range rows {
+		out[row.UserID] = normalizeUserQuotaView(cloneUserQuotaView(row), now)
+	}
+	return out, nil
+}
+
+func (r *Repository) GetUserQuotaView(userID int64, now time.Time) (*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, nil
+	}
+	var row model.UserQuota
+	err := r.db.Where("user_id = ?", userID).First(&row).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return normalizeUserQuotaView(cloneUserQuotaView(row), now), nil
+}
+
+func (r *Repository) AddUserQuotaUsage(userID int64, usedBytes int64, now time.Time) (*model.UserQuotaView, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, nil
+	}
+	result := &model.UserQuotaView{}
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		q, err := r.loadOrCreateUserQuotaTx(tx, userID, now)
+		if err != nil {
+			return err
+		}
+		applyUserQuotaWindowRoll(q, now)
+		if usedBytes > 0 {
+			q.DailyUsedBytes += usedBytes
+			q.MonthlyUsedBytes += usedBytes
+		}
+		q.UpdatedTime = now.UnixMilli()
+		if err := tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+			"daily_used_bytes":   q.DailyUsedBytes,
+			"monthly_used_bytes": q.MonthlyUsedBytes,
+			"day_key":            q.DayKey,
+			"month_key":          q.MonthKey,
+			"updated_time":       q.UpdatedTime,
+		}).Error; err != nil {
+			return err
+		}
+		*result = *cloneUserQuotaView(*q)
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return normalizeUserQuotaView(result, now), nil
+}
+
+func (r *Repository) MarkUserQuotaDisabled(userID int64, pausedForwardIDs []int64, now int64) error {
+	if r == nil || r.db == nil {
+		return errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return errors.New("user id is required")
+	}
+	return r.db.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+		"disabled_by_quota":  1,
+		"disabled_at":        now,
+		"paused_forward_ids": joinPausedForwardIDs(pausedForwardIDs),
+		"updated_time":       now,
+	}).Error
+}
+
+func (r *Repository) ResetUserQuotaUsage(userID int64, scope string, now time.Time) (*UserQuotaRelease, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	if userID <= 0 {
+		return nil, errors.New("user id is required")
+	}
+	scope = strings.TrimSpace(strings.ToLower(scope))
+	if scope == "" {
+		scope = "all"
+	}
+	if scope != "daily" && scope != "monthly" && scope != "all" {
+		return nil, fmt.Errorf("unsupported quota reset scope: %s", scope)
+	}
+	var release *UserQuotaRelease
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		q, err := r.loadOrCreateUserQuotaTx(tx, userID, now)
+		if err != nil {
+			return err
+		}
+		applyUserQuotaWindowRoll(q, now)
+		switch scope {
+		case "daily":
+			q.DailyUsedBytes = 0
+		case "monthly":
+			q.MonthlyUsedBytes = 0
+		case "all":
+			q.DailyUsedBytes = 0
+			q.MonthlyUsedBytes = 0
+		}
+		q.UpdatedTime = now.UnixMilli()
+		release = &UserQuotaRelease{UserID: userID}
+		if q.DisabledByQuota == 1 && !userQuotaExceeded(cloneUserQuotaView(*q)) {
+			release.UnblockUser = true
+			release.ForwardIDs = parsePausedForwardIDs(q.PausedForwardIDs)
+			q.DisabledByQuota = 0
+			q.DisabledAt = 0
+			q.PausedForwardIDs = ""
+		}
+		return tx.Model(&model.UserQuota{}).Where("user_id = ?", userID).Updates(map[string]interface{}{
+			"daily_used_bytes":   q.DailyUsedBytes,
+			"monthly_used_bytes": q.MonthlyUsedBytes,
+			"day_key":            q.DayKey,
+			"month_key":          q.MonthKey,
+			"disabled_by_quota":  q.DisabledByQuota,
+			"disabled_at":        q.DisabledAt,
+			"paused_forward_ids": q.PausedForwardIDs,
+			"updated_time":       q.UpdatedTime,
+		}).Error
+	})
+	if err != nil {
+		return nil, err
+	}
+	return release, nil
+}
+
+func (r *Repository) RollUserQuotaWindows(now time.Time) ([]UserQuotaRelease, error) {
+	if r == nil || r.db == nil {
+		return nil, errors.New("repository not initialized")
+	}
+	var releases []UserQuotaRelease
+	err := r.db.Transaction(func(tx *gorm.DB) error {
+		var rows []model.UserQuota
+		if err := tx.Find(&rows).Error; err != nil {
+			return err
+		}
+		nowMs := now.UnixMilli()
+		for _, row := range rows {
+			q := row
+			changed := applyUserQuotaWindowRoll(&q, now)
+			release := UserQuotaRelease{UserID: q.UserID}
+			if q.DisabledByQuota == 1 && !userQuotaExceeded(cloneUserQuotaView(q)) {
+				release.UnblockUser = true
+				release.ForwardIDs = parsePausedForwardIDs(q.PausedForwardIDs)
+				q.DisabledByQuota = 0
+				q.DisabledAt = 0
+				q.PausedForwardIDs = ""
+				changed = true
+			}
+			if !changed {
+				continue
+			}
+			q.UpdatedTime = nowMs
+			if err := tx.Model(&model.UserQuota{}).Where("user_id = ?", q.UserID).Updates(map[string]interface{}{
+				"daily_used_bytes":   q.DailyUsedBytes,
+				"monthly_used_bytes": q.MonthlyUsedBytes,
+				"day_key":            q.DayKey,
+				"month_key":          q.MonthKey,
+				"disabled_by_quota":  q.DisabledByQuota,
+				"disabled_at":        q.DisabledAt,
+				"paused_forward_ids": q.PausedForwardIDs,
+				"updated_time":       q.UpdatedTime,
+			}).Error; err != nil {
+				return err
+			}
+			if release.UnblockUser {
+				releases = append(releases, release)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return releases, nil
+}

go-backend/internal/ws/server.go

@@ -39,6 +39,7 @@ type nodeSession struct {
 	nodeID int64
 	secret string
 	conn   *connWrap
+	crypto *security.AESCrypto // 缓存的 AES 加密器，避免每条消息重建
 }
 
 type commandResponse struct {
@@ -72,6 +73,7 @@ type Server struct {
 	jwtSecret    string
 	upgrader     websocket.Upgrader
 	onNodeOnline func(nodeID int64)
+	onNodeMetric func(nodeID int64, info SystemInfo)
 
 	mu      sync.RWMutex
 	admins  map[*connWrap]struct{}
@@ -80,6 +82,22 @@ type Server struct {
 	pending map[string]pendingRequest
 }
 
+type SystemInfo struct {
+	Uptime           uint64  `json:"uptime"`
+	BytesReceived    uint64  `json:"bytes_received"`
+	BytesTransmitted uint64  `json:"bytes_transmitted"`
+	CPUUsage         float64 `json:"cpu_usage"`
+	MemoryUsage      float64 `json:"memory_usage"`
+	DiskUsage        float64 `json:"disk_usage"`
+	Load1            float64 `json:"load1"`
+	Load5            float64 `json:"load5"`
+	Load15           float64 `json:"load15"`
+	TCPConns         int64   `json:"tcp_conns"`
+	UDPConns         int64   `json:"udp_conns"`
+	NetInSpeed       int64   `json:"net_in_speed"`
+	NetOutSpeed      int64   `json:"net_out_speed"`
+}
+
 func (s *Server) SetNodeOnlineHook(fn func(nodeID int64)) {
 	if s == nil {
 		return
@@ -89,6 +107,15 @@ func (s *Server) SetNodeOnlineHook(fn func(nodeID int64)) {
 	s.mu.Unlock()
 }
 
+func (s *Server) SetNodeMetricHook(fn func(nodeID int64, info SystemInfo)) {
+	if s == nil {
+		return
+	}
+	s.mu.Lock()
+	s.onNodeMetric = fn
+	s.mu.Unlock()
+}
+
 func NewServer(repo *repo.Repository, jwtSecret string) *Server {
 	return &Server{
 		repo:      repo,
@@ -185,7 +212,12 @@ func (s *Server) handleNode(w http.ResponseWriter, r *http.Request, nodeID int64
 		_ = old.conn.conn.Close()
 		delete(s.byConn, old.conn.conn)
 	}
-	ns := &nodeSession{nodeID: nodeID, secret: secret, conn: cw}
+	// 初始化 AES 加密器并缓存（仅创建一次）
+	var nodeCrypto *security.AESCrypto
+	if strings.TrimSpace(secret) != "" {
+		nodeCrypto, _ = security.NewAESCrypto(secret)
+	}
+	ns := &nodeSession{nodeID: nodeID, secret: secret, conn: cw, crypto: nodeCrypto}
 	s.nodes[nodeID] = ns
 	s.byConn[conn] = ns
 	s.mu.Unlock()
@@ -225,18 +257,100 @@ func (s *Server) handleNode(w http.ResponseWriter, r *http.Request, nodeID int64
 			return
 		}
 
-		msg := decryptIfNeeded(payload, secret)
+		msg := decryptIfNeeded(payload, ns.crypto, secret)
 		s.tryResolvePending(nodeID, msg)
 
 		var parsed struct {
 			Type string `json:"type"`
 		}
-		if json.Unmarshal([]byte(msg), &parsed) == nil && parsed.Type == "UpgradeProgress" {
-			s.broadcastTyped(nodeID, "upgrade_progress", msg)
-		} else {
-			s.broadcastInfo(nodeID, msg)
+		if json.Unmarshal([]byte(msg), &parsed) == nil && parsed.Type != "" {
+			switch parsed.Type {
+			case "metric":
+				// Agent 新版指标消息：{type:"metric", data:{...}}
+				var envelope struct {
+					Data json.RawMessage `json:"data"`
+				}
+				if err := json.Unmarshal([]byte(msg), &envelope); err == nil && len(envelope.Data) > 0 {
+					// 解析 SystemInfo 并调用 hook
+					var sysInfo SystemInfo
+					if json.Unmarshal(envelope.Data, &sysInfo) == nil {
+						s.mu.RLock()
+						onMetric := s.onNodeMetric
+						s.mu.RUnlock()
+						if onMetric != nil {
+							go onMetric(nodeID, sysInfo)
+						}
+					}
+					// 广播内层 data 给前端（保持平坦结构兼容性）
+					s.broadcastTyped(nodeID, "metric", string(envelope.Data))
+				}
+				continue
+			case "UpgradeProgress":
+				s.broadcastTyped(nodeID, "upgrade_progress", msg)
+				continue
+			default:
+				// Unknown typed messages still get broadcast so future
+				// agent message types are not silently lost.
+				s.broadcastInfo(nodeID, msg)
+				continue
+			}
+		}
+
+		// 兼容旧版 Agent：无 type 字段的系统信息消息
+		if looksLikeSystemInfoMessage(msg) {
+			var sysInfo SystemInfo
+			if err := json.Unmarshal([]byte(msg), &sysInfo); err == nil {
+				s.mu.RLock()
+				onMetric := s.onNodeMetric
+				s.mu.RUnlock()
+				if onMetric != nil {
+					go onMetric(nodeID, sysInfo)
+				}
+				s.broadcastTyped(nodeID, "metric", msg)
+				continue
+			}
+		}
+
+		s.broadcastInfo(nodeID, msg)
+	}
+}
+
+func looksLikeSystemInfoMessage(msg string) bool {
+	// Keep this as a cheap heuristic so that arbitrary JSON objects don't get
+	// misclassified as metrics (SystemInfo unmarshal would otherwise succeed with
+	// all-zero values).
+	if strings.TrimSpace(msg) == "" {
+		return false
+	}
+	if !strings.Contains(msg, "{") {
+		return false
+	}
+
+	keys := []string{
+		"\"uptime\"",
+		"\"cpu_usage\"",
+		"\"memory_usage\"",
+		"\"disk_usage\"",
+		"\"bytes_received\"",
+		"\"bytes_transmitted\"",
+		"\"net_in_speed\"",
+		"\"net_out_speed\"",
+		"\"tcp_conns\"",
+		"\"udp_conns\"",
+		"\"load1\"",
+		"\"load5\"",
+		"\"load15\"",
+	}
+	matched := 0
+	for _, k := range keys {
+		if strings.Contains(msg, k) {
+			matched++
+			if matched >= 3 {
+				return true
+			}
 		}
 	}
+	return false
 }
 
 func (s *Server) SendCommand(nodeID int64, cmdType string, data interface{}, timeout time.Duration) (CommandResult, error) {
@@ -285,13 +399,8 @@ func (s *Server) SendCommand(nodeID int64, cmdType string, data interface{}, tim
 	}
 
 	messageData := rawCmd
-	if strings.TrimSpace(ns.secret) != "" {
-		crypto, err := security.NewAESCrypto(ns.secret)
-		if err != nil {
-			cleanup()
-			return CommandResult{}, err
-		}
-		encrypted, err := crypto.Encrypt(rawCmd)
+	if ns.crypto != nil {
+		encrypted, err := ns.crypto.Encrypt(rawCmd)
 		if err != nil {
 			cleanup()
 			return CommandResult{}, err
@@ -341,6 +450,11 @@ func (s *Server) tryResolvePending(nodeID int64, message string) {
 		return
 	}
 
+	// 快速短路：指标消息永远不含 requestId，跳过完整 JSON 解析
+	if !strings.Contains(message, "\"requestId\"") {
+		return
+	}
+
 	var resp commandResponse
 	if err := json.Unmarshal([]byte(message), &resp); err != nil {
 		return
@@ -458,18 +572,22 @@ func (s *Server) broadcastToAdmins(message string) {
 	}
 }
 
-func decryptIfNeeded(payload []byte, secret string) string {
+func decryptIfNeeded(payload []byte, crypto *security.AESCrypto, secret string) string {
 	text := string(payload)
 	var wrap encryptedMessage
 	if err := json.Unmarshal(payload, &wrap); err != nil || !wrap.Encrypted || strings.TrimSpace(wrap.Data) == "" {
 		return text
 	}
 
-	crypto, err := security.NewAESCrypto(secret)
-	if err != nil {
+	// 优先使用缓存的 crypto 实例
+	c := crypto
+	if c == nil && strings.TrimSpace(secret) != "" {
+		c, _ = security.NewAESCrypto(secret)
+	}
+	if c == nil {
 		return text
 	}
-	plain, err := crypto.Decrypt(wrap.Data)
+	plain, err := c.Decrypt(wrap.Data)
 	if err != nil {
 		return text
 	}

go-backend/tests/contract/batch_action_failure_details_contract_test.go

@@ -0,0 +1,202 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+	"go-backend/internal/store/repo"
+)
+
+func TestForwardBatchDeleteReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-delete", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "转发不存在")
+}
+
+func TestForwardBatchPauseReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-pause", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "转发不存在")
+}
+
+func TestForwardBatchResumeReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	forwardID := seedForwardForBatchAction(t, repo, batchForwardSeedOptions{
+		Now:              now,
+		TunnelName:       "resume-detail-tunnel",
+		ForwardName:      "resume-detail-forward",
+		CreateUserTunnel: true,
+		UserTunnelStatus: 0,
+	})
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-resume", `{"ids":[`+jsonNumber(forwardID)+`]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureNameAndReason(t, result, "resume-detail-forward", "该隧道已禁用")
+}
+
+func TestForwardBatchChangeTunnelReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	forwardID := seedForwardForBatchAction(t, repo, batchForwardSeedOptions{
+		Now:         now,
+		TunnelName:  "change-detail-tunnel",
+		ForwardName: "change-detail-forward",
+	})
+	tunnelID := mustQueryInt64(t, repo, `SELECT tunnel_id FROM forward WHERE id = ?`, forwardID)
+
+	payload := `{"forwardIds":[` + jsonNumber(forwardID) + `],"targetTunnelId":` + jsonNumber(tunnelID) + `}`
+	out := postBatchRequest(t, router, adminToken, "/api/v1/forward/batch-change-tunnel", payload)
+	result := mustBatchResult(t, out)
+	assertBatchFailureNameAndReason(t, result, "change-detail-forward", "规则已在目标隧道中")
+}
+
+func TestTunnelBatchDeleteReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, _ := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+
+	out := postBatchRequest(t, router, adminToken, "/api/v1/tunnel/batch-delete", `{"ids":[999]}`)
+	result := mustBatchResult(t, out)
+	assertBatchFailureReasonContains(t, result, "隧道不存在")
+}
+
+type batchForwardSeedOptions struct {
+	Now              int64
+	TunnelName       string
+	ForwardName      string
+	CreateUserTunnel bool
+	UserTunnelStatus int
+}
+
+func mustAdminToken(t *testing.T, secret string) string {
+	t.Helper()
+	token, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+	return token
+}
+
+func postBatchRequest(t *testing.T, router http.Handler, token, path, payload string) response.R {
+	t.Helper()
+	req := httptest.NewRequest(http.MethodPost, path, bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	return out
+}
+
+func mustBatchResult(t *testing.T, out response.R) map[string]interface{} {
+	t.Helper()
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+	return result
+}
+
+func assertBatchFailureReasonContains(t *testing.T, result map[string]interface{}, snippet string) {
+	t.Helper()
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, snippet) {
+		t.Fatalf("expected failure reason to contain %q, got %q", snippet, reason)
+	}
+}
+
+func assertBatchFailureNameAndReason(t *testing.T, result map[string]interface{}, expectedName, reasonSnippet string) {
+	t.Helper()
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	gotName, _ := first["name"].(string)
+	if strings.TrimSpace(gotName) != expectedName {
+		t.Fatalf("expected failure name %q, got %q", expectedName, gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, reasonSnippet) {
+		t.Fatalf("expected failure reason to contain %q, got %q", reasonSnippet, reason)
+	}
+}
+
+func seedForwardForBatchAction(t *testing.T, repo *repo.Repository, opts batchForwardSeedOptions) int64 {
+	t.Helper()
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'batch_action_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, opts.Now, opts.Now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, opts.TunnelName, 1.0, 1, "tls", 99999, opts.Now, opts.Now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, opts.TunnelName)
+
+	if opts.CreateUserTunnel {
+		if err := repo.DB().Exec(`
+			INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+			VALUES(20, 2, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, ?)
+		`, tunnelID, opts.UserTunnelStatus).Error; err != nil {
+			t.Fatalf("insert user_tunnel: %v", err)
+		}
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, 'batch_action_user', ?, ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, opts.ForwardName, tunnelID, opts.Now, opts.Now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	return mustLastInsertID(t, repo, opts.ForwardName)
+}

go-backend/tests/contract/batch_redeploy_error_details_contract_test.go

@@ -0,0 +1,161 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestForwardBatchRedeployReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'batch_redeploy_user', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "batch-redeploy-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "batch-redeploy-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, ?, ?, ?, ?, 0, 0, ?, ?, 1, 0)
+	`, 2, "batch_redeploy_user", "redeploy-forward", tunnelID, "1.1.1.1:443", "fifo", now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, repo, "redeploy-forward")
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/batch-redeploy", bytes.NewBufferString(`{"ids":[`+jsonNumber(forwardID)+`]}`))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+	if int(result["successCount"].(float64)) != 0 {
+		t.Fatalf("expected successCount=0, got %v", result["successCount"])
+	}
+
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	if gotName := strings.TrimSpace(first["name"].(string)); gotName != "redeploy-forward" {
+		t.Fatalf("expected failure name redeploy-forward, got %q", gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, "转发入口端口不存在") {
+		t.Fatalf("expected forward failure reason to mention missing entry port, got %q", reason)
+	}
+}
+
+func TestTunnelBatchRedeployReturnsFailureReasonsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "broken-redeploy-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "broken-redeploy-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "entry-only-node", "entry-only-secret", "10.0.0.20", "10.0.0.20", "", "20000-20010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node: %v", err)
+	}
+	entryNodeID := mustLastInsertID(t, repo, "entry-only-node")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 20001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/batch-redeploy", bytes.NewBufferString(`{"ids":[`+jsonNumber(tunnelID)+`]}`))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected API success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected map result, got %T", out.Data)
+	}
+	if int(result["failCount"].(float64)) != 1 {
+		t.Fatalf("expected failCount=1, got %v", result["failCount"])
+	}
+
+	failures, ok := result["failures"].([]interface{})
+	if !ok || len(failures) != 1 {
+		t.Fatalf("expected exactly one failure detail, got %#v", result["failures"])
+	}
+	first, ok := failures[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected failure detail object, got %T", failures[0])
+	}
+	if gotName := strings.TrimSpace(first["name"].(string)); gotName != "broken-redeploy-tunnel" {
+		t.Fatalf("expected failure name broken-redeploy-tunnel, got %q", gotName)
+	}
+	reason, _ := first["reason"].(string)
+	if !strings.Contains(reason, "转发链目标不能为空") {
+		t.Fatalf("expected tunnel failure reason to mention missing target, got %q", reason)
+	}
+}

go-backend/tests/contract/diagnosis_contract_test.go

@@ -1,6 +1,7 @@
 package contract_test
 
 import (
+	"bufio"
 	"bytes"
 	"encoding/json"
 	"net/http"
@@ -461,3 +462,167 @@ func TestDiagnosisUsesFederationRuntimeForRemoteNodes(t *testing.T) {
 		t.Fatalf("expected federation runtime diagnose endpoint to be called")
 	}
 }
+
+func TestTunnelDiagnosisUsesConfiguredConnectIPContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	insertNode := func(name, ip string) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryNodeID := insertNode("entry-connectip", "10.80.0.10")
+	middleNodeID := insertNode("middle-connectip", "10.80.0.20")
+	exitNodeID := insertNode("exit-connectip", "10.80.0.30")
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "diagnose-connectip-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "diagnose-connectip-tunnel")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(?, 2, ?, 30002, 'round', 1, 'tls', ?)
+	`, tunnelID, middleNodeID, "10.99.0.22").Error; err != nil {
+		t.Fatalf("insert middle chain: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(?, 3, ?, 30003, 'round', 1, 'tls', ?)
+	`, tunnelID, exitNodeID, "10.99.0.33").Error; err != nil {
+		t.Fatalf("insert exit chain: %v", err)
+	}
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	t.Run("normal diagnose should use configured connectIp", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+		req.Header.Set("Authorization", adminToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code != 0 {
+			t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+		}
+
+		payload, ok := out.Data.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected object payload, got %T", out.Data)
+		}
+		results, ok := payload["results"].([]interface{})
+		if !ok || len(results) == 0 {
+			t.Fatalf("expected non-empty results, got %v", payload["results"])
+		}
+
+		entryToMiddleOK := false
+		middleToExitOK := false
+		for _, raw := range results {
+			item, ok := raw.(map[string]interface{})
+			if !ok {
+				continue
+			}
+			from := valueAsInt(item["fromChainType"])
+			to := valueAsInt(item["toChainType"])
+			targetIP := strings.TrimSpace(valueAsString(item["targetIp"]))
+
+			if from == 1 && to == 2 && targetIP == "10.99.0.22" {
+				entryToMiddleOK = true
+			}
+			if from == 2 && to == 3 && targetIP == "10.99.0.33" {
+				middleToExitOK = true
+			}
+		}
+
+		if !entryToMiddleOK || !middleToExitOK {
+			t.Fatalf("expected connectIp targets 10.99.0.22/10.99.0.33, got entry=%v middle=%v", entryToMiddleOK, middleToExitOK)
+		}
+	})
+
+	t.Run("stream diagnose start items should use configured connectIp", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/diagnose/stream", bytes.NewBufferString(`{"tunnelId":`+strconv.FormatInt(tunnelID, 10)+`}`))
+		req.Header.Set("Authorization", adminToken)
+		res := httptest.NewRecorder()
+
+		router.ServeHTTP(res, req)
+
+		if res.Code != http.StatusOK {
+			t.Fatalf("expected status 200, got %d", res.Code)
+		}
+
+		scanner := bufio.NewScanner(bytes.NewReader(res.Body.Bytes()))
+		startFound := false
+		entryToMiddleOK := false
+		middleToExitOK := false
+		for scanner.Scan() {
+			line := strings.TrimSpace(scanner.Text())
+			if line == "" {
+				continue
+			}
+			var event map[string]interface{}
+			if err := json.Unmarshal([]byte(line), &event); err != nil {
+				continue
+			}
+			if strings.TrimSpace(valueAsString(event["type"])) != "start" {
+				continue
+			}
+			startFound = true
+			data, ok := event["data"].(map[string]interface{})
+			if !ok {
+				break
+			}
+			items, ok := data["items"].([]interface{})
+			if !ok {
+				break
+			}
+			for _, raw := range items {
+				item, ok := raw.(map[string]interface{})
+				if !ok {
+					continue
+				}
+				from := valueAsInt(item["fromChainType"])
+				to := valueAsInt(item["toChainType"])
+				targetIP := strings.TrimSpace(valueAsString(item["targetIp"]))
+				if from == 1 && to == 2 && targetIP == "10.99.0.22" {
+					entryToMiddleOK = true
+				}
+				if from == 2 && to == 3 && targetIP == "10.99.0.33" {
+					middleToExitOK = true
+				}
+			}
+			break
+		}
+		if err := scanner.Err(); err != nil {
+			t.Fatalf("scan stream body: %v", err)
+		}
+		if !startFound {
+			t.Fatalf("expected start event in stream response")
+		}
+		if !entryToMiddleOK || !middleToExitOK {
+			t.Fatalf("expected start items with connectIp targets 10.99.0.22/10.99.0.33, got entry=%v middle=%v", entryToMiddleOK, middleToExitOK)
+		}
+	})
+}

go-backend/tests/contract/flow_limit_forward_enable_contract_test.go

@@ -0,0 +1,201 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+const contractBytesPerGB int64 = 1024 * 1024 * 1024
+
+func TestForwardResumeBlockedWhenUserFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+	forwardID := int64(1)
+
+	flowGB := int64(120)
+	used := flowGB*contractBytesPerGB + 1
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'flow_user', 'pwd', 1, 2727251700000, ?, ?, 0, 1, 99999, ?, ?, 1)
+	`, userID, flowGB, used, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, 'flow_user', 'flow_forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, forwardID, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":1}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected flow exceeded message, got %q", out.Msg)
+	}
+
+	status := mustQueryInt(t, repo, `SELECT status FROM forward WHERE id = ?`, forwardID)
+	if status != 0 {
+		t.Fatalf("expected forward status to remain 0, got %d", status)
+	}
+}
+
+func TestForwardResumeBlockedWhenUserTunnelFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+	forwardID := int64(1)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'ut_flow_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, userID, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'ut_flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+
+	utFlowGB := int64(120)
+	utUsed := utFlowGB * contractBytesPerGB
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, ?, ?, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID, utFlowGB, utUsed).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(?, ?, 'ut_flow_user', 'ut_flow_forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, forwardID, userID, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "ut_flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":1}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when tunnel flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "隧道") || !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected tunnel flow exceeded message, got %q", out.Msg)
+	}
+}
+
+func TestForwardCreateBlockedWhenFlowExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	userID := int64(2)
+	tunnelID := int64(1)
+
+	flowGB := int64(120)
+	used := flowGB*contractBytesPerGB + 1
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(?, 'create_flow_user', 'pwd', 1, 2727251700000, ?, ?, 0, 1, 99999, ?, ?, 1)
+	`, userID, flowGB, used, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, 'create_flow_tunnel', 1.0, 1, 'tls', 99999, ?, ?, 1, NULL, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, ?, ?, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, userID, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	token, err := auth.GenerateToken(userID, "create_flow_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+
+	payload := `{"tunnelId":1,"name":"n","remoteAddr":"1.1.1.1:53"}`
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(payload))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when flow exceeded")
+	}
+	if !strings.Contains(out.Msg, "流量") {
+		t.Fatalf("expected flow exceeded message, got %q", out.Msg)
+	}
+}

go-backend/tests/contract/forward_contract_test.go

@@ -7,6 +7,8 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"strconv"
+	"strings"
+	"sync"
 	"testing"
 	"time"
 
@@ -29,7 +31,7 @@ func TestForwardOwnershipAndScopeContracts(t *testing.T) {
 	if err := repo.DB().Exec(`
 		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
 		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-	`, "contract-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+	`, "contract-tunnel", 2.5, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
 		t.Fatalf("insert tunnel: %v", err)
 	}
 	tunnelID := mustLastInsertID(t, repo, "contract-tunnel")
@@ -116,6 +118,13 @@ func TestForwardOwnershipAndScopeContracts(t *testing.T) {
 		if got := int64(idFloat); got != userForwardID {
 			t.Fatalf("expected forward id %d, got %d", userForwardID, got)
 		}
+		ratioFloat, ok := item["tunnelTrafficRatio"].(float64)
+		if !ok {
+			t.Fatalf("expected tunnelTrafficRatio to be float64, got %T", item["tunnelTrafficRatio"])
+		}
+		if ratioFloat != 2.5 {
+			t.Fatalf("expected tunnelTrafficRatio 2.5, got %v", ratioFloat)
+		}
 	})
 
 	t.Run("forward diagnose returns structured payload", func(t *testing.T) {
@@ -480,6 +489,113 @@ func TestUserTunnelReassignmentKeepsStableID(t *testing.T) {
 	}
 }
 
+func TestUserTunnelSaveIgnoresDeletedSpeedLimitContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(101, 'user_tunnel_speed_user_a', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user a: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "user-tunnel-missing-speed-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "user-tunnel-missing-speed-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO speed_limit(name, speed, tunnel_id, tunnel_name, created_time, updated_time, status)
+		VALUES(?, ?, NULL, NULL, ?, NULL, ?)
+	`, "user-tunnel-missing-speed-limit", 2048, now, 1).Error; err != nil {
+		t.Fatalf("insert speed limit: %v", err)
+	}
+	speedID := mustLastInsertID(t, repo, "user-tunnel-missing-speed-limit")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(31, 101, ?, ?, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelID, speedID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`DELETE FROM speed_limit WHERE id = ?`, speedID).Error; err != nil {
+		t.Fatalf("delete speed limit: %v", err)
+	}
+
+	t.Run("user tunnel update auto clears missing speed", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":            31,
+			"flow":          99999,
+			"num":           999,
+			"expTime":       int64(2727251700000),
+			"flowResetTime": 1,
+			"status":        1,
+			"speedId":       speedID,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		updateReq := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/user/update", bytes.NewReader(updateBody))
+		updateReq.Header.Set("Authorization", adminToken)
+		updateReq.Header.Set("Content-Type", "application/json")
+		updateRes := httptest.NewRecorder()
+		router.ServeHTTP(updateRes, updateReq)
+		assertCode(t, updateRes, 0)
+
+		var updatedSpeed sql.NullInt64
+		if err := repo.DB().Raw(`SELECT speed_id FROM user_tunnel WHERE id = 31`).Row().Scan(&updatedSpeed); err != nil {
+			t.Fatalf("query updated user_tunnel speed_id: %v", err)
+		}
+		if updatedSpeed.Valid {
+			t.Fatalf("expected updated user_tunnel speed_id to be NULL, got %d", updatedSpeed.Int64)
+		}
+	})
+
+	t.Run("user tunnel batch assign auto clears missing speed", func(t *testing.T) {
+		if err := repo.DB().Exec(`UPDATE user_tunnel SET speed_id = ? WHERE id = 31`, speedID).Error; err != nil {
+			t.Fatalf("prepare user_tunnel speed_id for batch assign: %v", err)
+		}
+
+		assignPayload := map[string]interface{}{
+			"userId": 101,
+			"tunnels": []map[string]interface{}{{
+				"tunnelId": tunnelID,
+				"speedId":  speedID,
+			}},
+		}
+		assignBody, err := json.Marshal(assignPayload)
+		if err != nil {
+			t.Fatalf("marshal assign payload: %v", err)
+		}
+		assignReq := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/user/batch-assign", bytes.NewReader(assignBody))
+		assignReq.Header.Set("Authorization", adminToken)
+		assignReq.Header.Set("Content-Type", "application/json")
+		assignRes := httptest.NewRecorder()
+		router.ServeHTTP(assignRes, assignReq)
+		assertCode(t, assignRes, 0)
+
+		var assignedSpeed sql.NullInt64
+		if err := repo.DB().Raw(`SELECT speed_id FROM user_tunnel WHERE id = 31`).Row().Scan(&assignedSpeed); err != nil {
+			t.Fatalf("query assigned user_tunnel speed_id: %v", err)
+		}
+		if assignedSpeed.Valid {
+			t.Fatalf("expected assigned user_tunnel speed_id to be NULL, got %d", assignedSpeed.Int64)
+		}
+	})
+}
+
 func TestForwardSpeedIDWriteAndClearContracts(t *testing.T) {
 	secret := "contract-jwt-secret"
 	router, repo := setupContractRouter(t, secret)
@@ -618,6 +734,105 @@ func TestForwardSpeedIDWriteAndClearContracts(t *testing.T) {
 	}
 }
 
+func TestForwardUpdateIgnoresDeletedSpeedLimitContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "forward-update-missing-speed-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "forward-update-missing-speed-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "forward-update-missing-speed-node", "forward-update-missing-speed-secret", "10.32.0.1", "10.32.0.1", "", "42000-42010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node: %v", err)
+	}
+	nodeID := mustLastInsertID(t, repo, "forward-update-missing-speed-node")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 42001, 'round', 1, 'tls')
+	`, tunnelID, nodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO speed_limit(name, speed, tunnel_id, tunnel_name, created_time, updated_time, status)
+		VALUES(?, ?, NULL, NULL, ?, NULL, ?)
+	`, "forward-update-missing-speed-limit", 2048, now, 1).Error; err != nil {
+		t.Fatalf("insert speed limit: %v", err)
+	}
+	speedID := mustLastInsertID(t, repo, "forward-update-missing-speed-limit")
+
+	server := httptest.NewServer(router)
+	defer server.Close()
+	stopNode := startMockNodeSession(t, server.URL, "forward-update-missing-speed-secret")
+	defer stopNode()
+
+	createPayload := map[string]interface{}{
+		"name":       "forward-update-missing-speed-target",
+		"tunnelId":   tunnelID,
+		"remoteAddr": "1.1.1.1:443",
+		"strategy":   "fifo",
+		"speedId":    speedID,
+	}
+	createBody, err := json.Marshal(createPayload)
+	if err != nil {
+		t.Fatalf("marshal create payload: %v", err)
+	}
+	createReq := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+	createReq.Header.Set("Authorization", adminToken)
+	createReq.Header.Set("Content-Type", "application/json")
+	createRes := httptest.NewRecorder()
+	router.ServeHTTP(createRes, createReq)
+	assertCode(t, createRes, 0)
+
+	forwardID := mustLastInsertID(t, repo, "forward-update-missing-speed-target")
+
+	if err := repo.DB().Exec(`DELETE FROM speed_limit WHERE id = ?`, speedID).Error; err != nil {
+		t.Fatalf("delete speed limit: %v", err)
+	}
+
+	updatePayload := map[string]interface{}{
+		"id":         forwardID,
+		"name":       "forward-update-missing-speed-target-updated",
+		"tunnelId":   tunnelID,
+		"remoteAddr": "1.1.1.1:443",
+		"strategy":   "fifo",
+		"speedId":    speedID,
+	}
+	updateBody, err := json.Marshal(updatePayload)
+	if err != nil {
+		t.Fatalf("marshal update payload: %v", err)
+	}
+	updateReq := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+	updateReq.Header.Set("Authorization", adminToken)
+	updateReq.Header.Set("Content-Type", "application/json")
+	updateRes := httptest.NewRecorder()
+	router.ServeHTTP(updateRes, updateReq)
+	assertCode(t, updateRes, 0)
+
+	storedSpeed := repo.DB().Raw(`SELECT speed_id FROM forward WHERE id = ?`, forwardID).Row()
+	var updatedSpeed sql.NullInt64
+	if err := storedSpeed.Scan(&updatedSpeed); err != nil {
+		t.Fatalf("query updated forward speed_id: %v", err)
+	}
+	if updatedSpeed.Valid {
+		t.Fatalf("expected updated speed_id to be NULL after missing speed limit, got %d", updatedSpeed.Int64)
+	}
+}
+
 func TestForwardCreateThenPauseResumeContract(t *testing.T) {
 	secret := "contract-jwt-secret"
 	router, repo := setupContractRouter(t, secret)
@@ -708,6 +923,462 @@ func TestForwardCreateThenPauseResumeContract(t *testing.T) {
 	}
 }
 
+func TestForwardUpdateRecoversFromAddressInUseContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	server := httptest.NewServer(router)
+	defer server.Close()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(202, 'forward_bind_retry_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "forward-bind-retry-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "forward-bind-retry-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "forward-bind-retry-node", "forward-bind-retry-secret", "10.42.0.1", "10.42.0.1", "", "44000-44010", "", "v1", 1, 1, 1, now, now, 1, "10.42.0.9", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node: %v", err)
+	}
+	nodeID := mustLastInsertID(t, repo, "forward-bind-retry-node")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 44001, 'round', 1, 'tls')
+	`, tunnelID, nodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(41, 202, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	createPayload := map[string]interface{}{
+		"name":       "forward-bind-retry-target",
+		"tunnelId":   tunnelID,
+		"remoteAddr": "1.1.1.1:443",
+		"strategy":   "fifo",
+	}
+	createBody, err := json.Marshal(createPayload)
+	if err != nil {
+		t.Fatalf("marshal create payload: %v", err)
+	}
+
+	var mu sync.Mutex
+	counts := map[string]int{}
+	var addServiceAddrs []string
+	triggerConflict := false
+	stopNode := startMockNodeSessionWithCommandRecorder(t, server.URL, "forward-bind-retry-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		key := strings.ToLower(strings.TrimSpace(cmdType))
+		mu.Lock()
+		counts[key]++
+		attempt := counts[key]
+		if strings.EqualFold(strings.TrimSpace(cmdType), "AddService") || strings.EqualFold(strings.TrimSpace(cmdType), "UpdateService") {
+			var services []map[string]interface{}
+			if err := json.Unmarshal(data, &services); err == nil {
+				for _, svc := range services {
+					if addr, _ := svc["addr"].(string); strings.TrimSpace(addr) != "" {
+						addServiceAddrs = append(addServiceAddrs, addr)
+					}
+				}
+			}
+		}
+		shouldFail := false
+		if triggerConflict {
+			if strings.EqualFold(strings.TrimSpace(cmdType), "UpdateService") && attempt == 1 {
+				shouldFail = true
+			}
+			if strings.EqualFold(strings.TrimSpace(cmdType), "AddService") && attempt == 1 {
+				shouldFail = true
+			}
+		}
+		mu.Unlock()
+		if shouldFail {
+			return true, "create service 57_7_7_tcp failed: listen tcp4 0.0.0.0:46222: bind: address alreadyin use"
+		}
+		return false, ""
+	})
+	defer stopNode()
+	waitNodeStatus(t, repo, nodeID, 1)
+
+	createReq := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+	createReq.Header.Set("Authorization", adminToken)
+	createReq.Header.Set("Content-Type", "application/json")
+	createRes := httptest.NewRecorder()
+	router.ServeHTTP(createRes, createReq)
+	assertCode(t, createRes, 0)
+	mu.Lock()
+	counts = map[string]int{}
+	addServiceAddrs = nil
+	triggerConflict = true
+	mu.Unlock()
+
+	forwardID := mustLastInsertID(t, repo, "forward-bind-retry-target")
+
+	updatePayload := map[string]interface{}{
+		"id":         forwardID,
+		"name":       "forward-bind-retry-target-updated",
+		"tunnelId":   tunnelID,
+		"remoteAddr": "9.9.9.9:8443",
+		"strategy":   "fifo",
+	}
+	updateBody, err := json.Marshal(updatePayload)
+	if err != nil {
+		t.Fatalf("marshal update payload: %v", err)
+	}
+	updateReq := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+	updateReq.Header.Set("Authorization", adminToken)
+	updateReq.Header.Set("Content-Type", "application/json")
+	updateRes := httptest.NewRecorder()
+	router.ServeHTTP(updateRes, updateReq)
+	assertCode(t, updateRes, 0)
+
+	mu.Lock()
+	defer mu.Unlock()
+	boundPort := mustQueryInt(t, repo, `SELECT port FROM forward_port WHERE forward_id = ? LIMIT 1`, forwardID)
+	if counts["updateservice"] != 1 {
+		t.Fatalf("expected one UpdateService attempt, got %d (%v)", counts["updateservice"], counts)
+	}
+	if counts["deleteservice"] == 0 {
+		t.Fatalf("expected DeleteService cleanup after address-in-use (%v)", counts)
+	}
+	if counts["addservice"] < 2 {
+		t.Fatalf("expected AddService retry path to run at least twice total, got %d (%v)", counts["addservice"], counts)
+	}
+	foundBindAddr := false
+	for _, addr := range addServiceAddrs {
+		if addr == "10.42.0.9:"+strconv.Itoa(boundPort) {
+			foundBindAddr = true
+			break
+		}
+	}
+	if !foundBindAddr {
+		t.Fatalf("expected forward runtime to keep node listen addr 10.42.0.9:%d, got %v", boundPort, addServiceAddrs)
+	}
+
+	storedRemoteAddr := mustQueryString(t, repo, `SELECT remote_addr FROM forward WHERE id = ?`, forwardID)
+	if storedRemoteAddr != "9.9.9.9:8443" {
+		t.Fatalf("expected remote_addr update to persist, got %q", storedRemoteAddr)
+	}
+}
+
 func jsonNumber(v int64) string {
 	return strconv.FormatInt(v, 10)
 }
+
+func TestNonAdminCannotSetSpeedIdOrPort(t *testing.T) {
+	secret := "contract-jwt-secret-perm"
+	router, repo := setupContractRouter(t, secret)
+	server := httptest.NewServer(router)
+	defer server.Close()
+	now := time.Now().UnixMilli()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'normal_user_perm', '3c85cdebade1c51cf64ca9f3c09d182d', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "perm-tunnel", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, repo, "perm-tunnel")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "perm-node", "perm-secret", "10.0.0.20", "10.0.0.20", "", "30000-30010", "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert node: %v", err)
+	}
+	entryNodeID := mustLastInsertID(t, repo, "perm-node")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 30001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(?, ?, NULL, 10, 99999, 0, 0, 1, 2727251700000, 1)
+	`, 2, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO speed_limit(name, speed, tunnel_id, tunnel_name, created_time, updated_time, status)
+		VALUES(?, ?, ?, ?, ?, ?, 1)
+	`, "perm-speed-limit", 2048, tunnelID, "perm-tunnel", now, now).Error; err != nil {
+		t.Fatalf("insert speed limit: %v", err)
+	}
+	speedID := mustLastInsertID(t, repo, "perm-speed-limit")
+
+	userToken, err := auth.GenerateToken(2, "normal_user_perm", 1, secret)
+	if err != nil {
+		t.Fatalf("generate user token: %v", err)
+	}
+
+	stopNode := startMockNodeSession(t, server.URL, "perm-secret")
+	defer stopNode()
+
+	t.Run("non-admin cannot set speedId on create", func(t *testing.T) {
+		createPayload := map[string]interface{}{
+			"name":       "perm-forward-speed",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "1.2.3.4:443",
+			"strategy":   "fifo",
+			"speedId":    speedID,
+		}
+		createBody, err := json.Marshal(createPayload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCodeMsg(t, res, -1, "普通用户无法设置限速规则")
+	})
+
+	t.Run("non-admin cannot set inPort out of range on create", func(t *testing.T) {
+		createPayload := map[string]interface{}{
+			"name":       "perm-forward-port-out",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "1.2.3.4:443",
+			"strategy":   "fifo",
+			"inPort":     12345,
+		}
+		createBody, err := json.Marshal(createPayload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code >= 0 {
+			t.Errorf("expected port out of range error, got code=%d msg=%s", out.Code, out.Msg)
+		}
+	})
+
+	t.Run("non-admin can set inPort within range on create", func(t *testing.T) {
+		createPayload := map[string]interface{}{
+			"name":       "perm-forward-port-in",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "1.2.3.4:443",
+			"strategy":   "fifo",
+			"inPort":     30005,
+		}
+		createBody, err := json.Marshal(createPayload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin can create without speedId and inPort", func(t *testing.T) {
+		createPayload := map[string]interface{}{
+			"name":       "perm-forward-ok",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "1.2.3.4:443",
+			"strategy":   "fifo",
+		}
+		createBody, err := json.Marshal(createPayload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	forwardID := mustLastInsertID(t, repo, "perm-forward-ok")
+
+	t.Run("non-admin cannot update speedId", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-updated",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "5.6.7.8:443",
+			"speedId":    speedID,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCodeMsg(t, res, -1, "普通用户无法修改限速规则")
+	})
+
+	t.Run("non-admin cannot update inPort out of range", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-updated2",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "5.6.7.8:443",
+			"inPort":     54321,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		var out response.R
+		if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+			t.Fatalf("decode response: %v", err)
+		}
+		if out.Code >= 0 {
+			t.Errorf("expected port out of range error, got code=%d msg=%s", out.Code, out.Msg)
+		}
+	})
+
+	t.Run("non-admin can update inPort within range", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-updated3",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "5.6.7.8:443",
+			"inPort":     30006,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin can update without speedId and inPort", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-updated-ok",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "9.10.11.12:443",
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin can update when request keeps existing speedId", func(t *testing.T) {
+		if err := repo.DB().Exec(`UPDATE forward SET speed_id = ? WHERE id = ?`, speedID, forwardID).Error; err != nil {
+			t.Fatalf("assign forward speed limit: %v", err)
+		}
+
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-keep-speed",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "9.10.11.12:443",
+			"speedId":    speedID,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin can create with speedId null and inPort 0", func(t *testing.T) {
+		createPayload := map[string]interface{}{
+			"name":       "perm-forward-null-values",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "1.2.3.4:443",
+			"strategy":   "fifo",
+			"speedId":    nil,
+			"inPort":     0,
+		}
+		createBody, err := json.Marshal(createPayload)
+		if err != nil {
+			t.Fatalf("marshal create payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewReader(createBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+
+	t.Run("non-admin can update with speedId null", func(t *testing.T) {
+		updatePayload := map[string]interface{}{
+			"id":         forwardID,
+			"name":       "perm-forward-null-speed",
+			"tunnelId":   tunnelID,
+			"remoteAddr": "9.10.11.12:443",
+			"speedId":    nil,
+		}
+		updateBody, err := json.Marshal(updatePayload)
+		if err != nil {
+			t.Fatalf("marshal update payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/update", bytes.NewReader(updateBody))
+		req.Header.Set("Authorization", userToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	})
+}

go-backend/tests/contract/issue313_entry_port_conflict_contract_test.go

@@ -0,0 +1,193 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestIssue313_EntryPortCrossTunnelConflictContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	insertNode := func(name, ip, portRange string) int64 {
+		if err := repo.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, name+"-secret", ip, ip, "", portRange, "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", 0).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, repo, name)
+	}
+
+	entryB1 := insertNode("issue313-entry-b1", "10.100.0.2", "2000-2010")
+	entryB2 := insertNode("issue313-entry-b2", "10.100.0.3", "2000-2010")
+	chainA := insertNode("issue313-chain-a", "10.100.0.4", "3000-3010")
+	chainB := insertNode("issue313-chain-b", "10.100.0.5", "3000-3010")
+	exitA := insertNode("issue313-exit-a", "10.100.0.6", "4000-4010")
+	exitB := insertNode("issue313-exit-b", "10.100.0.7", "4000-4010")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue313-tunnel-a", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel a: %v", err)
+	}
+	tunnelAID := mustLastInsertID(t, repo, "issue313-tunnel-a")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 2000, 'round', 1, 'tls')
+	`, tunnelAID, entryB2).Error; err != nil {
+		t.Fatalf("insert chain_tunnel entry a: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 3000, 'round', 1, 'tls')
+	`, tunnelAID, chainA).Error; err != nil {
+		t.Fatalf("insert chain_tunnel chain a: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 4000, 'round', 1, 'tls')
+	`, tunnelAID, exitA).Error; err != nil {
+		t.Fatalf("insert chain_tunnel exit a: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue313-tunnel-b", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel b: %v", err)
+	}
+	tunnelBID := mustLastInsertID(t, repo, "issue313-tunnel-b")
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 2000, 'round', 1, 'tls')
+	`, tunnelBID, entryB1).Error; err != nil {
+		t.Fatalf("insert chain_tunnel entry b1: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 2, ?, 3000, 'round', 1, 'tls')
+	`, tunnelBID, chainB).Error; err != nil {
+		t.Fatalf("insert chain_tunnel chain b: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 4000, 'round', 1, 'tls')
+	`, tunnelBID, exitB).Error; err != nil {
+		t.Fatalf("insert chain_tunnel exit b: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(3131, 1, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelAID).Error; err != nil {
+		t.Fatalf("insert user_tunnel for tunnel a: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, 'admin_user', 'issue313-forward-a', ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelAID, now, now).Error; err != nil {
+		t.Fatalf("insert forward a: %v", err)
+	}
+	forwardAID := mustLastInsertID(t, repo, "issue313-forward-a")
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardAID, entryB2, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port a: %v", err)
+	}
+
+	// Simulate legacy dirty data: tunnel A already occupies port 2000 on entryB2.
+	// When tunnel B adds entryB2, the inherited forward port should conflict cross-tunnel.
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardAID, entryB2, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port a on entryB2: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(3132, 1, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelBID).Error; err != nil {
+		t.Fatalf("insert user_tunnel for tunnel b: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, 'admin_user', 'issue313-forward-b', ?, '2.2.2.2:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelBID, now, now).Error; err != nil {
+		t.Fatalf("insert forward b: %v", err)
+	}
+	forwardBID := mustLastInsertID(t, repo, "issue313-forward-b")
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardBID, entryB1, 2000).Error; err != nil {
+		t.Fatalf("insert forward_port b: %v", err)
+	}
+
+	payload := map[string]interface{}{
+		"id":           tunnelBID,
+		"name":         "issue313-tunnel-b",
+		"type":         2,
+		"flow":         99999,
+		"trafficRatio": 1.0,
+		"status":       1,
+		"inNodeId": []map[string]interface{}{
+			{"nodeId": entryB1, "protocol": "tls", "strategy": "round"},
+			{"nodeId": entryB2, "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": []interface{}{
+			[]map[string]interface{}{{"nodeId": chainB, "protocol": "tls", "strategy": "round"}},
+		},
+		"outNodeId": []map[string]interface{}{
+			{"nodeId": exitB, "protocol": "tls", "strategy": "round"},
+		},
+	}
+	body, err := json.Marshal(payload)
+	if err != nil {
+		t.Fatalf("marshal payload: %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/update", bytes.NewReader(body))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+
+	if out.Code == 0 {
+		t.Fatalf("expected update failure due to cross-tunnel port conflict, got success with code 0")
+	}
+
+	msgBytes := []byte(out.Msg)
+	if !bytes.Contains(msgBytes, []byte("端口")) && !bytes.Contains(msgBytes, []byte("占用")) {
+		t.Fatalf("expected port conflict error message, got %q", out.Msg)
+	}
+
+	countB2 := mustQueryInt(t, repo, `SELECT COUNT(1) FROM forward_port WHERE forward_id = ? AND node_id = ?`, forwardBID, entryB2)
+	if countB2 > 0 {
+		t.Fatalf("expected no forward_port record for entryB2, but found %d", countB2)
+	}
+
+	chainCountB2 := mustQueryInt(t, repo, `SELECT COUNT(1) FROM chain_tunnel WHERE tunnel_id = ? AND node_id = ?`, tunnelBID, entryB2)
+	if chainCountB2 > 0 {
+		t.Fatalf("expected no chain_tunnel record for entryB2, but found %d", chainCountB2)
+	}
+}

go-backend/tests/contract/limiter_sync_failure_contract_test.go

@@ -8,6 +8,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
+	"sort"
 	"strings"
 	"sync"
 	"testing"
@@ -538,6 +539,549 @@ func TestBatchAssignInsertRollbackWhenLimiterDispatchFailsContract(t *testing.T)
 	}
 }
 
+func TestTunnelUpdateRecoversFromAddressInUseContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	server := httptest.NewServer(router)
+	defer server.Close()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "tunnel-bind-retry", 1.0, 1, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "tunnel-bind-retry")
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "tunnel-bind-entry", "tunnel-bind-entry-secret", "10.41.0.1", "10.41.0.1", "", "43000-43010", "", "v1", 1, 1, 1, now, now, 1, "10.41.0.1", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert entry node: %v", err)
+	}
+	entryNodeID := mustLastInsertID(t, r, "tunnel-bind-entry")
+
+	if err := r.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "tunnel-bind-exit", "tunnel-bind-exit-secret", "10.41.0.2", "10.41.0.2", "", "43100-43110", "eth0", "v1", 1, 1, 1, now, now, 1, "10.41.0.9", "[::]", 0).Error; err != nil {
+		t.Fatalf("insert exit node: %v", err)
+	}
+	exitNodeID := mustLastInsertID(t, r, "tunnel-bind-exit")
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 43001, 'round', 1, 'tls')
+	`, tunnelID, entryNodeID).Error; err != nil {
+		t.Fatalf("insert entry chain_tunnel: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol, connect_ip)
+		VALUES(?, 3, ?, 43101, 'round', 1, 'tls', ?)
+	`, tunnelID, exitNodeID, "10.41.0.99").Error; err != nil {
+		t.Fatalf("insert exit chain_tunnel: %v", err)
+	}
+
+	var commandMu sync.Mutex
+	commandCounts := map[string]int{}
+	var addServiceAddrs []string
+	stopEntry := startMockNodeSessionWithCommandRecorder(t, server.URL, "tunnel-bind-entry-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		commandMu.Lock()
+		defer commandMu.Unlock()
+		commandCounts["entry:"+strings.ToLower(strings.TrimSpace(cmdType))]++
+		return false, ""
+	})
+	defer stopEntry()
+	stopExit := startMockNodeSessionWithCommandRecorder(t, server.URL, "tunnel-bind-exit-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		key := "exit:" + strings.ToLower(strings.TrimSpace(cmdType))
+		commandMu.Lock()
+		commandCounts[key]++
+		attempt := commandCounts[key]
+		if strings.EqualFold(strings.TrimSpace(cmdType), "AddService") {
+			var services []map[string]interface{}
+			if err := json.Unmarshal(data, &services); err == nil {
+				for _, svc := range services {
+					if addr, _ := svc["addr"].(string); strings.TrimSpace(addr) != "" {
+						addServiceAddrs = append(addServiceAddrs, addr)
+					}
+				}
+			}
+		}
+		commandMu.Unlock()
+		if strings.EqualFold(strings.TrimSpace(cmdType), "AddService") && attempt == 1 {
+			return true, "listen tcp 10.41.0.99:43101: bind: address already in use"
+		}
+		return false, ""
+	})
+	defer stopExit()
+	waitNodeStatus(t, r, entryNodeID, 1)
+	waitNodeStatus(t, r, exitNodeID, 1)
+
+	payload := map[string]interface{}{
+		"id":           tunnelID,
+		"name":         "tunnel-bind-retry",
+		"type":         2,
+		"flow":         99999,
+		"trafficRatio": 1.0,
+		"status":       1,
+		"inNodeId": []map[string]interface{}{
+			{"nodeId": entryNodeID, "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": []interface{}{},
+		"outNodeId": []map[string]interface{}{
+			{"nodeId": exitNodeID, "protocol": "tls", "strategy": "round", "port": 43101, "connectIp": "10.41.0.99"},
+		},
+	}
+	body, err := json.Marshal(payload)
+	if err != nil {
+		t.Fatalf("marshal payload: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/update", bytes.NewReader(body))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+	assertCode(t, res, 0)
+
+	commandMu.Lock()
+	defer commandMu.Unlock()
+	if commandCounts["exit:addservice"] != 2 {
+		t.Fatalf("expected exit AddService twice, got %d (%v)", commandCounts["exit:addservice"], sortedCommandCounts(commandCounts))
+	}
+	if commandCounts["exit:deleteservice"] == 0 {
+		t.Fatalf("expected exit DeleteService retry cleanup to run (%v)", sortedCommandCounts(commandCounts))
+	}
+	if len(addServiceAddrs) < 2 {
+		t.Fatalf("expected recorded AddService addresses, got %v", addServiceAddrs)
+	}
+	for _, addr := range addServiceAddrs {
+		if addr != "10.41.0.99:43101" {
+			t.Fatalf("expected connectIp to stay preferred in AddService addr, got %q", addr)
+		}
+	}
+}
+
+func TestTunnelUpdateChangesEntryNodeButLeavesOldForwardRuntimeContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	server := httptest.NewServer(router)
+	defer server.Close()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'issue281_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue281-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "issue281-tunnel")
+
+	insertNode := func(name, secretValue, ip, portRange string, inx int) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, secretValue, ip, ip, "", portRange, "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", inx).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	oldEntryNodeID := insertNode("issue281-old-entry", "issue281-old-entry-secret", "10.51.0.1", "51000-51010", 0)
+	newEntryNodeID := insertNode("issue281-new-entry", "issue281-new-entry-secret", "10.51.0.2", "51000-51010", 1)
+	exitNodeID := insertNode("issue281-exit", "issue281-exit-secret", "10.51.0.3", "53000-53010", 2)
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 51001, 'round', 1, 'tls')
+	`, tunnelID, oldEntryNodeID).Error; err != nil {
+		t.Fatalf("insert old entry chain_tunnel: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 53001, 'round', 1, 'tls')
+	`, tunnelID, exitNodeID).Error; err != nil {
+		t.Fatalf("insert exit chain_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(281, 2, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, 'issue281_user', 'issue281-forward', ?, '8.8.8.8:53', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "issue281-forward")
+
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, oldEntryNodeID, 51001).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	forwardBase := fmt.Sprintf("%d_%d_%d", forwardID, 2, 281)
+
+	var commandMu sync.Mutex
+	oldEntryDeleteNames := make([]string, 0)
+	newEntryUpdateNames := make([]string, 0)
+
+	recordForwardServiceNames := func(data json.RawMessage, list *[]string) {
+		var serviceList []map[string]interface{}
+		if err := json.Unmarshal(data, &serviceList); err == nil {
+			for _, service := range serviceList {
+				name, _ := service["name"].(string)
+				if strings.HasPrefix(strings.TrimSpace(name), forwardBase) {
+					*list = append(*list, name)
+				}
+			}
+			return
+		}
+
+		var payload map[string]interface{}
+		if err := json.Unmarshal(data, &payload); err != nil {
+			return
+		}
+		if rawServices, ok := payload["services"].([]interface{}); ok {
+			for _, raw := range rawServices {
+				name, _ := raw.(string)
+				if strings.HasPrefix(strings.TrimSpace(name), forwardBase) {
+					*list = append(*list, name)
+				}
+			}
+			return
+		}
+	}
+
+	stopOldEntry := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-old-entry-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		commandMu.Lock()
+		defer commandMu.Unlock()
+		if strings.EqualFold(strings.TrimSpace(cmdType), "DeleteService") {
+			recordForwardServiceNames(data, &oldEntryDeleteNames)
+		}
+		return false, ""
+	})
+	defer stopOldEntry()
+
+	stopNewEntry := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-new-entry-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		commandMu.Lock()
+		defer commandMu.Unlock()
+		if strings.EqualFold(strings.TrimSpace(cmdType), "UpdateService") || strings.EqualFold(strings.TrimSpace(cmdType), "AddService") {
+			recordForwardServiceNames(data, &newEntryUpdateNames)
+		}
+		return false, ""
+	})
+	defer stopNewEntry()
+
+	stopExit := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-exit-secret", func(cmdType string, data json.RawMessage) (bool, string) {
+		return false, ""
+	})
+	defer stopExit()
+
+	waitNodeStatus(t, r, oldEntryNodeID, 1)
+	waitNodeStatus(t, r, newEntryNodeID, 1)
+	waitNodeStatus(t, r, exitNodeID, 1)
+
+	payload := map[string]interface{}{
+		"id":           tunnelID,
+		"name":         "issue281-tunnel",
+		"type":         2,
+		"flow":         99999,
+		"trafficRatio": 1.0,
+		"status":       1,
+		"inNodeId": []map[string]interface{}{
+			{"nodeId": newEntryNodeID, "protocol": "tls", "strategy": "round"},
+		},
+		"chainNodes": []interface{}{},
+		"outNodeId": []map[string]interface{}{
+			{"nodeId": exitNodeID, "protocol": "tls", "strategy": "round", "port": 53001},
+		},
+	}
+	body, err := json.Marshal(payload)
+	if err != nil {
+		t.Fatalf("marshal payload: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/update", bytes.NewReader(body))
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+	assertCode(t, res, 0)
+
+	nodeAfter, portAfter := mustQueryInt64Int(t, r, `SELECT node_id, port FROM forward_port WHERE forward_id = ? LIMIT 1`, forwardID)
+	if nodeAfter != newEntryNodeID || portAfter != 51001 {
+		t.Fatalf("expected forward_port rebound to node=%d port=51001, got node=%d port=%d", newEntryNodeID, nodeAfter, portAfter)
+	}
+
+	commandMu.Lock()
+	defer commandMu.Unlock()
+	if len(newEntryUpdateNames) == 0 {
+		t.Fatalf("expected new entry node to receive forward runtime sync for %s", forwardBase)
+	}
+	if len(oldEntryDeleteNames) == 0 {
+		t.Fatalf("expected old entry node to receive forward DeleteService cleanup for %s, got none", forwardBase)
+	}
+}
+
+func TestTunnelUpdateEntryTransitionsCleanupForwardRuntimeContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, r := setupContractRouter(t, secret)
+	server := httptest.NewServer(router)
+	defer server.Close()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if err := r.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'issue281_transition_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "issue281-transition-tunnel", 1.0, 2, "tls", 99999, now, now, 1, nil, 0).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	tunnelID := mustLastInsertID(t, r, "issue281-transition-tunnel")
+
+	insertNode := func(name, secretValue, ip, portRange string, inx int) int64 {
+		if err := r.DB().Exec(`
+			INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+			VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+		`, name, secretValue, ip, ip, "", portRange, "", "v1", 1, 1, 1, now, now, 1, "[::]", "[::]", inx).Error; err != nil {
+			t.Fatalf("insert node %s: %v", name, err)
+		}
+		return mustLastInsertID(t, r, name)
+	}
+
+	entryA := insertNode("issue281-transition-entry-a", "issue281-transition-entry-a-secret", "10.52.0.1", "54000-54010", 0)
+	entryB := insertNode("issue281-transition-entry-b", "issue281-transition-entry-b-secret", "10.52.0.2", "54000-54010", 1)
+	entryC := insertNode("issue281-transition-entry-c", "issue281-transition-entry-c-secret", "10.52.0.3", "54000-54010", 2)
+	exitNodeID := insertNode("issue281-transition-exit", "issue281-transition-exit-secret", "10.52.0.4", "57000-57010", 3)
+
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 54001, 'round', 1, 'tls')
+	`, tunnelID, entryA).Error; err != nil {
+		t.Fatalf("insert initial entry chain_tunnel: %v", err)
+	}
+	if err := r.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 3, ?, 57001, 'round', 1, 'tls')
+	`, tunnelID, exitNodeID).Error; err != nil {
+		t.Fatalf("insert exit chain_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(282, 2, ?, NULL, 999, 99999, 0, 0, 1, 2727251700000, 1)
+	`, tunnelID).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+
+	if err := r.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, 'issue281_transition_user', 'issue281-transition-forward', ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	forwardID := mustLastInsertID(t, r, "issue281-transition-forward")
+
+	if err := r.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, entryA, 54001).Error; err != nil {
+		t.Fatalf("insert forward_port: %v", err)
+	}
+
+	forwardBase := fmt.Sprintf("%d_%d_%d", forwardID, 2, 282)
+	recorder := newForwardRuntimeCommandRecorder(forwardBase)
+
+	stopEntryA := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-transition-entry-a-secret", recorder.handler("entry-a"))
+	defer stopEntryA()
+	stopEntryB := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-transition-entry-b-secret", recorder.handler("entry-b"))
+	defer stopEntryB()
+	stopEntryC := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-transition-entry-c-secret", recorder.handler("entry-c"))
+	defer stopEntryC()
+	stopExit := startMockNodeSessionWithCommandRecorder(t, server.URL, "issue281-transition-exit-secret", recorder.handler("exit"))
+	defer stopExit()
+
+	waitNodeStatus(t, r, entryA, 1)
+	waitNodeStatus(t, r, entryB, 1)
+	waitNodeStatus(t, r, entryC, 1)
+	waitNodeStatus(t, r, exitNodeID, 1)
+
+	updateTunnelEntries := func(entries []map[string]interface{}) {
+		payload := map[string]interface{}{
+			"id":           tunnelID,
+			"name":         "issue281-transition-tunnel",
+			"type":         2,
+			"flow":         99999,
+			"trafficRatio": 1.0,
+			"status":       1,
+			"inNodeId":     entries,
+			"chainNodes":   []interface{}{},
+			"outNodeId": []map[string]interface{}{
+				{"nodeId": exitNodeID, "protocol": "tls", "strategy": "round", "port": 57001},
+			},
+		}
+		body, err := json.Marshal(payload)
+		if err != nil {
+			t.Fatalf("marshal payload: %v", err)
+		}
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/update", bytes.NewReader(body))
+		req.Header.Set("Authorization", adminToken)
+		req.Header.Set("Content-Type", "application/json")
+		res := httptest.NewRecorder()
+		router.ServeHTTP(res, req)
+		assertCode(t, res, 0)
+	}
+
+	updateTunnelEntries([]map[string]interface{}{
+		{"nodeId": entryA, "protocol": "tls", "strategy": "round"},
+		{"nodeId": entryB, "protocol": "tls", "strategy": "round"},
+	})
+
+	afterMulti := mustQueryNodePorts(t, r, `SELECT node_id, port FROM forward_port WHERE forward_id = ? ORDER BY id ASC`, forwardID)
+	if len(afterMulti) != 2 || afterMulti[entryA] != 54001 || afterMulti[entryB] != 54001 {
+		t.Fatalf("expected forward_port on entryA+entryB with port 54001, got %v", afterMulti)
+	}
+	if recorder.syncCount("entry-b") == 0 {
+		t.Fatalf("expected entry-b to receive forward runtime sync for %s", forwardBase)
+	}
+	if recorder.deleteCount("entry-a") != 0 {
+		t.Fatalf("expected no cleanup on retained entry-a during single->multi transition, got %v", recorder.deleteNames("entry-a"))
+	}
+
+	updateTunnelEntries([]map[string]interface{}{
+		{"nodeId": entryC, "protocol": "tls", "strategy": "round"},
+	})
+
+	afterSingle := mustQueryNodePorts(t, r, `SELECT node_id, port FROM forward_port WHERE forward_id = ? ORDER BY id ASC`, forwardID)
+	if len(afterSingle) != 1 || afterSingle[entryC] != 54001 {
+		t.Fatalf("expected forward_port on entryC with port 54001, got %v", afterSingle)
+	}
+	if recorder.deleteCount("entry-a") == 0 {
+		t.Fatalf("expected cleanup on removed entry-a during multi->single transition, got %v", recorder.deleteNames("entry-a"))
+	}
+	if recorder.deleteCount("entry-b") == 0 {
+		t.Fatalf("expected cleanup on removed entry-b during multi->single transition, got %v", recorder.deleteNames("entry-b"))
+	}
+	if recorder.syncCount("entry-c") == 0 {
+		t.Fatalf("expected entry-c to receive forward runtime sync for %s", forwardBase)
+	}
+}
+
+type forwardRuntimeCommandRecorder struct {
+	prefix string
+
+	mu        sync.Mutex
+	deletes   map[string][]string
+	syncNames map[string][]string
+}
+
+func newForwardRuntimeCommandRecorder(prefix string) *forwardRuntimeCommandRecorder {
+	return &forwardRuntimeCommandRecorder{
+		prefix:    strings.TrimSpace(prefix),
+		deletes:   make(map[string][]string),
+		syncNames: make(map[string][]string),
+	}
+}
+
+func (r *forwardRuntimeCommandRecorder) handler(node string) func(string, json.RawMessage) (bool, string) {
+	return func(cmdType string, data json.RawMessage) (bool, string) {
+		names := collectForwardServiceNames(data, r.prefix)
+		if len(names) == 0 {
+			return false, ""
+		}
+
+		r.mu.Lock()
+		defer r.mu.Unlock()
+
+		if strings.EqualFold(strings.TrimSpace(cmdType), "DeleteService") {
+			r.deletes[node] = append(r.deletes[node], names...)
+		}
+		if strings.EqualFold(strings.TrimSpace(cmdType), "UpdateService") || strings.EqualFold(strings.TrimSpace(cmdType), "AddService") {
+			r.syncNames[node] = append(r.syncNames[node], names...)
+		}
+		return false, ""
+	}
+}
+
+func (r *forwardRuntimeCommandRecorder) deleteCount(node string) int {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return len(r.deletes[node])
+}
+
+func (r *forwardRuntimeCommandRecorder) syncCount(node string) int {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return len(r.syncNames[node])
+}
+
+func (r *forwardRuntimeCommandRecorder) deleteNames(node string) []string {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return append([]string(nil), r.deletes[node]...)
+}
+
+func collectForwardServiceNames(data json.RawMessage, prefix string) []string {
+	prefix = strings.TrimSpace(prefix)
+	if prefix == "" {
+		return nil
+	}
+
+	names := make([]string, 0)
+	var serviceList []map[string]interface{}
+	if err := json.Unmarshal(data, &serviceList); err == nil {
+		for _, service := range serviceList {
+			name, _ := service["name"].(string)
+			if strings.HasPrefix(strings.TrimSpace(name), prefix) {
+				names = append(names, name)
+			}
+		}
+		return names
+	}
+
+	var payload map[string]interface{}
+	if err := json.Unmarshal(data, &payload); err != nil {
+		return nil
+	}
+	if rawServices, ok := payload["services"].([]interface{}); ok {
+		for _, raw := range rawServices {
+			name, _ := raw.(string)
+			if strings.HasPrefix(strings.TrimSpace(name), prefix) {
+				names = append(names, name)
+			}
+		}
+	}
+	return names
+}
+
 func startMockNodeSessionWithCommandFailures(t *testing.T, baseURL string, nodeSecret string, failCommands map[string]string) func() {
 	t.Helper()
 
@@ -633,3 +1177,112 @@ func startMockNodeSessionWithCommandFailures(t *testing.T, baseURL string, nodeS
 		})
 	}
 }
+
+func startMockNodeSessionWithCommandRecorder(t *testing.T, baseURL string, nodeSecret string, onCommand func(cmdType string, data json.RawMessage) (bool, string)) func() {
+	t.Helper()
+
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		t.Fatalf("parse provider url: %v", err)
+	}
+	if strings.EqualFold(u.Scheme, "https") {
+		u.Scheme = "wss"
+	} else {
+		u.Scheme = "ws"
+	}
+	u.Path = "/system-info"
+	q := u.Query()
+	q.Set("type", "1")
+	q.Set("secret", nodeSecret)
+	q.Set("version", "v1")
+	q.Set("http", "1")
+	q.Set("tls", "1")
+	q.Set("socks", "1")
+	u.RawQuery = q.Encode()
+
+	conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
+	if err != nil {
+		t.Fatalf("dial mock node websocket: %v", err)
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		for {
+			_, raw, readErr := conn.ReadMessage()
+			if readErr != nil {
+				return
+			}
+
+			plain := raw
+			var wrap struct {
+				Encrypted bool   `json:"encrypted"`
+				Data      string `json:"data"`
+			}
+			if err := json.Unmarshal(raw, &wrap); err == nil && wrap.Encrypted && strings.TrimSpace(wrap.Data) != "" {
+				crypto, cryptoErr := security.NewAESCrypto(nodeSecret)
+				if cryptoErr == nil {
+					if dec, decErr := crypto.Decrypt(wrap.Data); decErr == nil {
+						plain = []byte(dec)
+					}
+				}
+			}
+
+			var cmd struct {
+				Type      string          `json:"type"`
+				RequestID string          `json:"requestId"`
+				Data      json.RawMessage `json:"data"`
+			}
+			if err := json.Unmarshal(plain, &cmd); err != nil {
+				continue
+			}
+			if strings.TrimSpace(cmd.RequestID) == "" {
+				continue
+			}
+
+			shouldFail := false
+			failMsg := ""
+			if onCommand != nil {
+				shouldFail, failMsg = onCommand(strings.TrimSpace(cmd.Type), cmd.Data)
+			}
+
+			respType := fmt.Sprintf("%sResponse", cmd.Type)
+			respPayload := map[string]interface{}{
+				"type":      respType,
+				"success":   !shouldFail,
+				"message":   "OK",
+				"requestId": cmd.RequestID,
+			}
+			if shouldFail {
+				if strings.TrimSpace(failMsg) == "" {
+					failMsg = "mock command failed"
+				}
+				respPayload["message"] = failMsg
+			}
+
+			respBytes, err := json.Marshal(respPayload)
+			if err != nil {
+				continue
+			}
+			_ = conn.WriteMessage(websocket.TextMessage, respBytes)
+		}
+	}()
+
+	var stopOnce sync.Once
+	return func() {
+		stopOnce.Do(func() {
+			_ = conn.Close()
+			wg.Wait()
+		})
+	}
+}
+
+func sortedCommandCounts(counts map[string]int) []string {
+	items := make([]string, 0, len(counts))
+	for key, value := range counts {
+		items = append(items, fmt.Sprintf("%s=%d", key, value))
+	}
+	sort.Strings(items)
+	return items
+}

go-backend/tests/contract/migration_contract_test.go

@@ -684,15 +684,107 @@ func TestOpenMigratesLegacyNodeDualStackColumns(t *testing.T) {
 
 	columns := readTableColumns(t, r.DB(), "node")
 
-	for _, required := range []string{"server_ip_v4", "server_ip_v6", "inx"} {
+	for _, required := range []string{"server_ip_v4", "server_ip_v6", "inx", "extra_ips"} {
 		if !columns[required] {
 			t.Fatalf("expected node column %q to exist after migration", required)
 		}
 	}
 
 	tunnelColumns := readTableColumns(t, r.DB(), "tunnel")
-	if !tunnelColumns["inx"] {
-		t.Fatalf("expected tunnel column %q to exist after migration", "inx")
+	for _, required := range []string{"inx", "ip_preference"} {
+		if !tunnelColumns[required] {
+			t.Fatalf("expected tunnel column %q to exist after migration", required)
+		}
+	}
+}
+
+func TestOpenMigratesVeryLegacyNodeAndTunnelColumns(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "legacy-1.x.db")
+	legacyDB, err := sql.Open("sqlite", dbPath)
+	if err != nil {
+		t.Fatalf("open legacy sqlite: %v", err)
+	}
+
+	t.Cleanup(func() {
+		_ = legacyDB.Close()
+	})
+
+	if _, err := legacyDB.Exec(`
+		CREATE TABLE IF NOT EXISTS node (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			name VARCHAR(100) NOT NULL,
+			secret VARCHAR(100) NOT NULL,
+			server_ip VARCHAR(100) NOT NULL,
+			port TEXT NOT NULL,
+			interface_name VARCHAR(200),
+			version VARCHAR(100),
+			http INTEGER NOT NULL DEFAULT 0,
+			tls INTEGER NOT NULL DEFAULT 0,
+			socks INTEGER NOT NULL DEFAULT 0,
+			created_time INTEGER NOT NULL,
+			updated_time INTEGER,
+			status INTEGER NOT NULL
+		)
+	`); err != nil {
+		t.Fatalf("create very legacy node table: %v", err)
+	}
+
+	if _, err := legacyDB.Exec(`
+		CREATE TABLE IF NOT EXISTS tunnel (
+			id INTEGER PRIMARY KEY AUTOINCREMENT,
+			name VARCHAR(100) NOT NULL,
+			traffic_ratio REAL NOT NULL DEFAULT 1.0,
+			type INTEGER NOT NULL,
+			protocol VARCHAR(10) NOT NULL DEFAULT 'tls',
+			flow INTEGER NOT NULL,
+			created_time INTEGER NOT NULL,
+			updated_time INTEGER NOT NULL,
+			status INTEGER NOT NULL,
+			in_ip TEXT
+		)
+	`); err != nil {
+		t.Fatalf("create very legacy tunnel table: %v", err)
+	}
+
+	now := time.Now().UnixMilli()
+	if _, err := legacyDB.Exec(`
+		INSERT INTO node(name, secret, server_ip, port, interface_name, version, http, tls, socks, created_time, updated_time, status)
+		VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, "legacy-node", "legacy-secret", "10.10.0.1", "10000-10010", "eth0", "v-old", 1, 1, 1, now, now, 1); err != nil {
+		t.Fatalf("seed legacy node row: %v", err)
+	}
+
+	r, err := repo.Open(dbPath)
+	if err != nil {
+		t.Fatalf("open migrated sqlite: %v", err)
+	}
+	t.Cleanup(func() {
+		_ = r.Close()
+	})
+
+	columns := readTableColumns(t, r.DB(), "node")
+	for _, required := range []string{
+		"server_ip_v4",
+		"server_ip_v6",
+		"extra_ips",
+		"tcp_listen_addr",
+		"udp_listen_addr",
+		"inx",
+		"is_remote",
+		"remote_url",
+		"remote_token",
+		"remote_config",
+	} {
+		if !columns[required] {
+			t.Fatalf("expected node column %q to exist after migration", required)
+		}
+	}
+
+	tunnelColumns := readTableColumns(t, r.DB(), "tunnel")
+	for _, required := range []string{"inx", "ip_preference"} {
+		if !tunnelColumns[required] {
+			t.Fatalf("expected tunnel column %q to exist after migration", required)
+		}
 	}
 }
 

go-backend/tests/contract/tunnel_delete_resolution_contract_test.go

@@ -0,0 +1,235 @@
+package contract_test
+
+import (
+	"testing"
+	"time"
+
+	"go-backend/internal/http/response"
+	storeRepo "go-backend/internal/store/repo"
+)
+
+func TestTunnelDeletePreviewIncludesDependentRulesContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	sourceTunnelID, sourceNodeID := seedTunnelDeleteTunnelWithNode(t, repo, now, "preview-source-tunnel", "preview-source-node", "21000-21010")
+	seedTunnelDeleteForward(t, repo, now, sourceTunnelID, sourceNodeID, "preview-forward", 21001)
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/tunnel/delete-preview", map[string]interface{}{"id": sourceTunnelID})
+	if out.Code != 0 {
+		t.Fatalf("expected success, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	data, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected preview data object, got %T", out.Data)
+	}
+	if contractValueAsInt64(data["tunnelId"]) != sourceTunnelID {
+		t.Fatalf("unexpected tunnelId: %#v", data["tunnelId"])
+	}
+	if contractValueAsInt64(data["forwardCount"]) != 1 {
+		t.Fatalf("expected forwardCount=1, got %#v", data["forwardCount"])
+	}
+
+	samples, ok := data["sampleForwards"].([]interface{})
+	if !ok || len(samples) != 1 {
+		t.Fatalf("expected one sample forward, got %#v", data["sampleForwards"])
+	}
+	first, ok := samples[0].(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected sample object, got %T", samples[0])
+	}
+	if first["name"] != "preview-forward" {
+		t.Fatalf("unexpected sample name: %#v", first["name"])
+	}
+	if contractValueAsInt64(first["inPort"]) != 21001 {
+		t.Fatalf("unexpected sample inPort: %#v", first["inPort"])
+	}
+}
+
+func TestTunnelDeleteWithForwardsDeleteActionRemovesTunnelAndRulesContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	sourceTunnelID, sourceNodeID := seedTunnelDeleteTunnelWithNode(t, repo, now, "delete-source-tunnel", "delete-source-node", "22000-22010")
+	forwardID := seedTunnelDeleteForward(t, repo, now, sourceTunnelID, sourceNodeID, "delete-forward", 22001)
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/tunnel/delete-with-forwards", map[string]interface{}{
+		"id":     sourceTunnelID,
+		"action": "delete_forwards",
+	})
+	if out.Code != 0 {
+		t.Fatalf("expected success, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM tunnel WHERE id = ?`, sourceTunnelID); count != 0 {
+		t.Fatalf("expected tunnel deleted, got count=%d", count)
+	}
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM forward WHERE id = ?`, forwardID); count != 0 {
+		t.Fatalf("expected forward deleted, got count=%d", count)
+	}
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM forward_port WHERE forward_id = ?`, forwardID); count != 0 {
+		t.Fatalf("expected forward ports deleted, got count=%d", count)
+	}
+}
+
+func TestTunnelDeleteWithForwardsReplaceReturnsFailureDetailsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	sourceTunnelID, sourceNodeID := seedTunnelDeleteTunnelWithNode(t, repo, now, "replace-source-tunnel", "replace-source-node", "23000-23010")
+	forwardID := seedTunnelDeleteForward(t, repo, now, sourceTunnelID, sourceNodeID, "replace-forward", 23001)
+	targetTunnelID, targetNodeID := seedTunnelDeleteTunnelWithNode(t, repo, now, "replace-target-tunnel", "replace-target-node", "23000-23010")
+	seedTunnelDeleteForward(t, repo, now, targetTunnelID, targetNodeID, "occupied-forward", 23001)
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/tunnel/delete-with-forwards", map[string]interface{}{
+		"id":             sourceTunnelID,
+		"action":         "replace",
+		"targetTunnelId": targetTunnelID,
+	})
+	if out.Code != -2 {
+		t.Fatalf("expected failure code -2, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result := mustTunnelDeleteFailureResult(t, out)
+	if contractValueAsInt64(result["failCount"]) != 1 {
+		t.Fatalf("expected failCount=1, got %#v", result["failCount"])
+	}
+	assertBatchFailureNameAndReason(t, result, "replace-forward", "节点 replace-target-node 端口 23001 已被其他转发占用")
+
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM tunnel WHERE id = ?`, sourceTunnelID); count != 1 {
+		t.Fatalf("expected source tunnel kept, got count=%d", count)
+	}
+	if tunnelAfter := mustQueryInt64(t, repo, `SELECT tunnel_id FROM forward WHERE id = ?`, forwardID); tunnelAfter != sourceTunnelID {
+		t.Fatalf("expected forward tunnel unchanged, got %d", tunnelAfter)
+	}
+}
+
+func TestTunnelBatchDeletePreviewIncludesTotalsContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	tunnelA, nodeA := seedTunnelDeleteTunnelWithNode(t, repo, now, "batch-preview-a", "batch-preview-node-a", "24000-24010")
+	tunnelB, _ := seedTunnelDeleteTunnelWithNode(t, repo, now, "batch-preview-b", "batch-preview-node-b", "24100-24110")
+	seedTunnelDeleteForward(t, repo, now, tunnelA, nodeA, "batch-preview-forward", 24001)
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/tunnel/batch-delete-preview", map[string]interface{}{
+		"ids": []int64{tunnelA, tunnelB},
+	})
+	if out.Code != 0 {
+		t.Fatalf("expected success, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	data, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected preview object, got %T", out.Data)
+	}
+	if contractValueAsInt64(data["tunnelCount"]) != 2 {
+		t.Fatalf("expected tunnelCount=2, got %#v", data["tunnelCount"])
+	}
+	if contractValueAsInt64(data["totalForwardCount"]) != 1 {
+		t.Fatalf("expected totalForwardCount=1, got %#v", data["totalForwardCount"])
+	}
+}
+
+func TestTunnelBatchDeleteWithForwardsReturnsTunnelLevelFailuresContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	adminToken := mustAdminToken(t, secret)
+	now := time.Now().UnixMilli()
+
+	sourceTunnelA, _ := seedTunnelDeleteTunnelWithNode(t, repo, now, "batch-replace-source-a", "batch-replace-source-node-a", "25000-25010")
+	sourceTunnelB, sourceNodeB := seedTunnelDeleteTunnelWithNode(t, repo, now, "batch-replace-source-b", "batch-replace-source-node-b", "25100-25110")
+	targetTunnelID, targetNodeID := seedTunnelDeleteTunnelWithNode(t, repo, now, "batch-replace-target", "batch-replace-target-node", "25000-25010")
+
+	seedTunnelDeleteForward(t, repo, now, sourceTunnelB, sourceNodeB, "batch-replace-forward-b", 25002)
+	seedTunnelDeleteForward(t, repo, now, targetTunnelID, targetNodeID, "batch-replace-occupied", 25002)
+
+	out := requestContractEnvelope(t, router, adminToken, "/api/v1/tunnel/batch-delete-with-forwards", map[string]interface{}{
+		"ids":            []int64{sourceTunnelA, sourceTunnelB},
+		"action":         "replace",
+		"targetTunnelId": targetTunnelID,
+	})
+	if out.Code != 0 {
+		t.Fatalf("expected success envelope, got code=%d msg=%q", out.Code, out.Msg)
+	}
+
+	result := mustTunnelDeleteFailureResult(t, out)
+	if contractValueAsInt64(result["successCount"]) != 1 {
+		t.Fatalf("expected successCount=1, got %#v", result["successCount"])
+	}
+	if contractValueAsInt64(result["failCount"]) != 1 {
+		t.Fatalf("expected failCount=1, got %#v", result["failCount"])
+	}
+	assertBatchFailureNameAndReason(t, result, "batch-replace-source-b", "batch-replace-forward-b: 节点 batch-replace-target-node 端口 25002 已被其他转发占用")
+
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM tunnel WHERE id = ?`, sourceTunnelA); count != 0 {
+		t.Fatalf("expected source tunnel A deleted, got count=%d", count)
+	}
+	if count := mustQueryInt(t, repo, `SELECT COUNT(1) FROM tunnel WHERE id = ?`, sourceTunnelB); count != 1 {
+		t.Fatalf("expected source tunnel B kept, got count=%d", count)
+	}
+}
+
+func seedTunnelDeleteTunnelWithNode(t *testing.T, repo *storeRepo.Repository, now int64, tunnelName, nodeName, portRange string) (int64, int64) {
+	t.Helper()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(name, traffic_ratio, type, protocol, flow, status, created_time, updated_time, in_ip, inx, ip_preference)
+		VALUES(?, 1.0, 1, 'tls', 1, 1, ?, ?, NULL, 0, '')
+	`, tunnelName, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel %s: %v", tunnelName, err)
+	}
+	tunnelID := mustLastInsertID(t, repo, tunnelName)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO node(name, secret, server_ip, server_ip_v4, server_ip_v6, port, interface_name, version, http, tls, socks, created_time, updated_time, status, tcp_listen_addr, udp_listen_addr, inx)
+		VALUES(?, ?, '10.0.0.1', '10.0.0.1', '', ?, '', 'v1', 1, 1, 1, ?, ?, 1, '[::]', '[::]', 0)
+	`, nodeName, nodeName+"-secret", portRange, now, now).Error; err != nil {
+		t.Fatalf("insert node %s: %v", nodeName, err)
+	}
+	nodeID := mustLastInsertID(t, repo, nodeName)
+
+	if err := repo.DB().Exec(`
+		INSERT INTO chain_tunnel(tunnel_id, chain_type, node_id, port, strategy, inx, protocol)
+		VALUES(?, 1, ?, 0, 'round', 1, 'tls')
+	`, tunnelID, nodeID).Error; err != nil {
+		t.Fatalf("insert chain_tunnel for %s: %v", tunnelName, err)
+	}
+
+	return tunnelID, nodeID
+}
+
+func seedTunnelDeleteForward(t *testing.T, repo *storeRepo.Repository, now int64, tunnelID, nodeID int64, forwardName string, port int) int64 {
+	t.Helper()
+
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(2, 'contract-user', ?, ?, '1.1.1.1:443', 'fifo', 0, 0, ?, ?, 1, 0)
+	`, forwardName, tunnelID, now, now).Error; err != nil {
+		t.Fatalf("insert forward %s: %v", forwardName, err)
+	}
+	forwardID := mustLastInsertID(t, repo, forwardName)
+
+	if err := repo.DB().Exec(`INSERT INTO forward_port(forward_id, node_id, port) VALUES(?, ?, ?)`, forwardID, nodeID, port).Error; err != nil {
+		t.Fatalf("insert forward_port for %s: %v", forwardName, err)
+	}
+
+	return forwardID
+}
+
+func mustTunnelDeleteFailureResult(t *testing.T, out response.R) map[string]interface{} {
+	t.Helper()
+	result, ok := out.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected result object, got %T", out.Data)
+	}
+	return result
+}

go-backend/tests/contract/tunnel_metrics_ingestion_contract_test.go

@@ -0,0 +1,97 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-backend/internal/store/model"
+)
+
+func TestFlowUploadInsertsTunnelMetrics(t *testing.T) {
+	secret := "monitoring-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+
+	now := time.Now().UnixMilli()
+
+	node := &model.Node{
+		Name:          "node-1",
+		Secret:        "node-secret",
+		ServerIP:      "127.0.0.1",
+		Port:          "10000-10010",
+		TCPListenAddr: "[::]",
+		UDPListenAddr: "[::]",
+		CreatedTime:   now,
+		Status:        1,
+	}
+	if err := repo.DB().Create(node).Error; err != nil {
+		t.Fatalf("seed node: %v", err)
+	}
+
+	tunnel := &model.Tunnel{
+		Name:         "tunnel-1",
+		TrafficRatio: 1.0,
+		Type:         1,
+		Protocol:     "tls",
+		Flow:         1,
+		CreatedTime:  now,
+		UpdatedTime:  now,
+		Status:       1,
+	}
+	if err := repo.DB().Create(tunnel).Error; err != nil {
+		t.Fatalf("seed tunnel: %v", err)
+	}
+
+	forward := &model.Forward{
+		UserID:      123,
+		UserName:    "user-123",
+		Name:        "forward-1",
+		TunnelID:    tunnel.ID,
+		RemoteAddr:  "1.1.1.1:80",
+		CreatedTime: now,
+		UpdatedTime: now,
+		Status:      1,
+	}
+	if err := repo.DB().Create(forward).Error; err != nil {
+		t.Fatalf("seed forward: %v", err)
+	}
+
+	serviceName := jsonNumber(forward.ID) + "_123_0"
+	body, _ := json.Marshal([]map[string]interface{}{{
+		"n": serviceName,
+		"u": 200,
+		"d": 100,
+	}})
+
+	req := httptest.NewRequest(http.MethodPost, "/flow/upload?secret="+node.Secret, bytes.NewReader(body))
+	res := httptest.NewRecorder()
+	router.ServeHTTP(res, req)
+
+	if res.Code != http.StatusOK {
+		t.Fatalf("expected status 200, got %d", res.Code)
+	}
+
+	metrics, err := repo.GetTunnelMetrics(tunnel.ID, 0, now+60_000)
+	if err != nil {
+		t.Fatalf("get tunnel metrics: %v", err)
+	}
+	if len(metrics) != 1 {
+		t.Fatalf("expected 1 tunnel metric row, got %d", len(metrics))
+	}
+
+	if metrics[0].TunnelID != tunnel.ID {
+		t.Fatalf("expected tunnelId %d, got %d", tunnel.ID, metrics[0].TunnelID)
+	}
+	if metrics[0].NodeID != node.ID {
+		t.Fatalf("expected nodeId %d, got %d", node.ID, metrics[0].NodeID)
+	}
+	if metrics[0].BytesIn != 100 {
+		t.Fatalf("expected bytesIn 100, got %d", metrics[0].BytesIn)
+	}
+	if metrics[0].BytesOut != 200 {
+		t.Fatalf("expected bytesOut 200, got %d", metrics[0].BytesOut)
+	}
+}

go-backend/tests/contract/user_quota_contract_test.go

@@ -0,0 +1,181 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestForwardCreateBlockedWhenUserQuotaExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now()
+	nowMs := now.UnixMilli()
+	dayKey := int64(now.Year()*10000 + int(now.Month())*100 + now.Day())
+	monthKey := int64(now.Year()*100 + int(now.Month()))
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'quota_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, 'quota_tunnel', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, 2, 1, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_quota(user_id, daily_limit_gb, monthly_limit_gb, daily_used_bytes, monthly_used_bytes, day_key, month_key, disabled_by_quota, disabled_at, paused_forward_ids, created_time, updated_time)
+		VALUES(2, 10, 0, ?, ?, ?, ?, 1, ?, '', ?, ?)
+	`, 11*contractBytesPerGB, 11*contractBytesPerGB, dayKey, monthKey, nowMs, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user_quota: %v", err)
+	}
+
+	token, err := auth.GenerateToken(2, "quota_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/create", bytes.NewBufferString(`{"tunnelId":1,"name":"quota-forward","remoteAddr":"1.1.1.1:53"}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when user quota exceeded")
+	}
+	if !strings.Contains(out.Msg, "配额") {
+		t.Fatalf("expected quota error, got %q", out.Msg)
+	}
+}
+
+func TestForwardResumeBlockedWhenUserQuotaExceeded(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now()
+	nowMs := now.UnixMilli()
+	dayKey := int64(now.Year()*10000 + int(now.Month())*100 + now.Day())
+	monthKey := int64(now.Year()*100 + int(now.Month()))
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'quota_resume_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(1, 'quota_resume_tunnel', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(10, 2, 1, NULL, 99999, 99999, 0, 0, 1, 2727251700000, 1)
+	`).Error; err != nil {
+		t.Fatalf("insert user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO forward(id, user_id, user_name, name, tunnel_id, remote_addr, strategy, in_flow, out_flow, created_time, updated_time, status, inx)
+		VALUES(1, 2, 'quota_resume_user', 'quota_resume_forward', 1, '1.1.1.1:53', 'fifo', 0, 0, ?, ?, 0, 0)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert forward: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_quota(user_id, daily_limit_gb, monthly_limit_gb, daily_used_bytes, monthly_used_bytes, day_key, month_key, disabled_by_quota, disabled_at, paused_forward_ids, created_time, updated_time)
+		VALUES(2, 10, 0, ?, ?, ?, ?, 1, ?, '1', ?, ?)
+	`, 11*contractBytesPerGB, 11*contractBytesPerGB, dayKey, monthKey, nowMs, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user_quota: %v", err)
+	}
+
+	token, err := auth.GenerateToken(2, "quota_resume_user", 1, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/forward/resume", bytes.NewBufferString(`{"id":1}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code == 0 {
+		t.Fatalf("expected non-zero code when user quota exceeded")
+	}
+	if !strings.Contains(out.Msg, "配额") {
+		t.Fatalf("expected quota error, got %q", out.Msg)
+	}
+	status := mustQueryInt(t, repo, `SELECT status FROM forward WHERE id = 1`)
+	if status != 0 {
+		t.Fatalf("expected forward to remain paused, got %d", status)
+	}
+}
+
+func TestUserQuotaResetClearsDisableFlag(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now()
+	nowMs := now.UnixMilli()
+	dayKey := int64(now.Year()*10000 + int(now.Month())*100 + now.Day())
+	monthKey := int64(now.Year()*100 + int(now.Month()))
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(2, 'quota_reset_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_quota(user_id, daily_limit_gb, monthly_limit_gb, daily_used_bytes, monthly_used_bytes, day_key, month_key, disabled_by_quota, disabled_at, paused_forward_ids, created_time, updated_time)
+		VALUES(2, 10, 0, ?, ?, ?, ?, 1, ?, '', ?, ?)
+	`, 11*contractBytesPerGB, 11*contractBytesPerGB, dayKey, monthKey, nowMs, nowMs, nowMs).Error; err != nil {
+		t.Fatalf("insert user_quota: %v", err)
+	}
+
+	token, err := auth.GenerateToken(1, "admin", 0, secret)
+	if err != nil {
+		t.Fatalf("generate token: %v", err)
+	}
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/user/quota/reset", bytes.NewBufferString(`{"userId":2,"scope":"all"}`))
+	req.Header.Set("Authorization", token)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected reset success, got code=%d msg=%q", out.Code, out.Msg)
+	}
+	quotaDisabled := mustQueryInt(t, repo, `SELECT disabled_by_quota FROM user_quota WHERE user_id = 2`)
+	if quotaDisabled != 0 {
+		t.Fatalf("expected quota disable flag cleared, got %d", quotaDisabled)
+	}
+}

go-backend/tests/contract/user_tunnel_status_contract_test.go

@@ -0,0 +1,105 @@
+package contract_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"go-backend/internal/auth"
+	"go-backend/internal/http/response"
+)
+
+func TestUserTunnelListReturnsStoredStatusContract(t *testing.T) {
+	secret := "contract-jwt-secret"
+	router, repo := setupContractRouter(t, secret)
+	now := time.Now().UnixMilli()
+
+	adminToken, err := auth.GenerateToken(1, "admin_user", 0, secret)
+	if err != nil {
+		t.Fatalf("generate admin token: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user(id, user, pwd, role_id, exp_time, flow, in_flow, out_flow, flow_reset_time, num, created_time, updated_time, status)
+		VALUES(201, 'user_tunnel_status_user', 'pwd', 1, 2727251700000, 99999, 0, 0, 1, 99999, ?, ?, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert user: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(301, 'user-tunnel-status-enabled', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 0)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel enabled: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO tunnel(id, name, traffic_ratio, type, protocol, flow, created_time, updated_time, status, in_ip, inx)
+		VALUES(302, 'user-tunnel-status-disabled', 1.0, 1, 'tls', 1, ?, ?, 1, NULL, 1)
+	`, now, now).Error; err != nil {
+		t.Fatalf("insert tunnel disabled: %v", err)
+	}
+
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(401, 201, 301, NULL, 10, 500, 0, 0, 1, 2727251700000, 1)
+	`).Error; err != nil {
+		t.Fatalf("insert enabled user_tunnel: %v", err)
+	}
+	if err := repo.DB().Exec(`
+		INSERT INTO user_tunnel(id, user_id, tunnel_id, speed_id, num, flow, in_flow, out_flow, flow_reset_time, exp_time, status)
+		VALUES(402, 201, 302, NULL, 10, 500, 0, 0, 1, 2727251700000, 0)
+	`).Error; err != nil {
+		t.Fatalf("insert disabled user_tunnel: %v", err)
+	}
+
+	body := bytes.NewBufferString(`{"userId":201}`)
+	req := httptest.NewRequest(http.MethodPost, "/api/v1/tunnel/user/list", body)
+	req.Header.Set("Authorization", adminToken)
+	req.Header.Set("Content-Type", "application/json")
+	res := httptest.NewRecorder()
+
+	router.ServeHTTP(res, req)
+
+	var out response.R
+	if err := json.NewDecoder(res.Body).Decode(&out); err != nil {
+		t.Fatalf("decode response: %v", err)
+	}
+	if out.Code != 0 {
+		t.Fatalf("expected code 0, got %d (%s)", out.Code, out.Msg)
+	}
+
+	items, ok := out.Data.([]interface{})
+	if !ok {
+		t.Fatalf("expected array data, got %T", out.Data)
+	}
+	if len(items) != 2 {
+		t.Fatalf("expected 2 items, got %d", len(items))
+	}
+
+	statusByTunnelID := make(map[int64]int, len(items))
+	for _, item := range items {
+		obj, ok := item.(map[string]interface{})
+		if !ok {
+			t.Fatalf("expected object item, got %T", item)
+		}
+		tunnelID, ok := obj["tunnelId"].(float64)
+		if !ok {
+			t.Fatalf("expected tunnelId to be float64, got %T", obj["tunnelId"])
+		}
+		status, ok := obj["status"].(float64)
+		if !ok {
+			t.Fatalf("expected status to be float64, got %T", obj["status"])
+		}
+		statusByTunnelID[int64(tunnelID)] = int(status)
+	}
+
+	if statusByTunnelID[301] != 1 {
+		t.Fatalf("expected enabled tunnel status 1, got %d", statusByTunnelID[301])
+	}
+	if statusByTunnelID[302] != 0 {
+		t.Fatalf("expected disabled tunnel status 0, got %d", statusByTunnelID[302])
+	}
+}

go-gost/AGENTS.md

@@ -1,6 +1,9 @@
 # GO-GOST SERVICE KNOWLEDGE BASE
 
-**Generated:** Thu Feb 26 2026
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 Forwarding agent built on GOST v3 with a local fork of `github.com/go-gost/x` under `x/`.

go-gost/main.go

@@ -109,12 +109,12 @@ func main() {
 	// 加载配置文件
 	config, err := LoadConfig("config.json")
 	if err != nil {
-		fmt.Println("❌ 配置加载失败: %v\n", err)
+		fmt.Printf("❌ 配置加载失败: %v\n", err)
 		fmt.Println("请确保当前目录存在 config.json 文件")
 		os.Exit(1)
 	}
 
-	fmt.Println("✅ 配置加载成功 - addr: %s", config.Addr)
+	fmt.Printf("✅ 配置加载成功 - addr: %s\n", config.Addr)
 
 	log := xlogger.NewLogger()
 	logger.SetDefault(log)

go-gost/x/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Local fork of `github.com/go-gost/x` used by `go-gost/` via `replace github.com/go-gost/x => ./x`. Most protocol/runtime behavior changes happen here. 30+ top-level packages - framework-style layout.
 

go-gost/x/api/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X API KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Gin-based management API for reading/writing config and controlling services at runtime.
 

go-gost/x/config/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X CONFIG KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Config model + parsing/loading pipeline for the `go-gost/x` runtime. This is the bridge between `gost.json`/`gost.yaml` and in-memory registries/services.
 

go-gost/x/connector/AGENTS.md

@@ -1,6 +1,9 @@
 # GOST CONNECTOR KNOWLEDGE BASE
 
-**Generated:** Fri Feb 13 2026
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 Connection initiators (clients) for various protocols in GOST forwarding.

go-gost/x/dialer/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X DIALERS KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Outbound dialers (client-side connection establishment) used by connectors/handlers.
 

go-gost/x/handler/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X HANDLERS KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Protocol handlers (server-side request handling) used by services defined in the GOST config.
 

go-gost/x/listener/AGENTS.md

@@ -1,5 +1,10 @@
 # GO-GOST/X LISTENERS KNOWLEDGE BASE
 
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
+
 ## OVERVIEW
 Inbound listeners (transport-level accept loops) used by services defined in the GOST config.
 

go-gost/x/registry/AGENTS.md

@@ -1,6 +1,9 @@
 # GO-GOST REGISTRY KNOWLEDGE BASE
 
-**Generated:** Wed Feb 04 2026
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 Central registration point for all pluggable GOST components (handlers, listeners, dialers, etc.).

go-gost/x/service/service.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"log"
 	"net"
 	"os"
 	"os/exec"
@@ -63,11 +62,9 @@ func SetProtocolBlock(httpOn int, tlsOn int, socksOn int) {
 type Option func(opts *options)
 
 func init() {
-	_, err := LoadConfig("config.json")
-	fmt.Println("config.json loaded")
-	if err != nil {
-		log.Fatal(err)
-	}
+	// NOTE: This package can be imported by tests/tools that don't have a local
+	// config.json. Missing config should not crash the process.
+	_, _ = LoadConfig("config.json")
 	needWrap = isTls+isSocks+isHttp > 0
 }
 

go-gost/x/service/traffic_reporter.go

@@ -6,7 +6,9 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"net/url"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/go-gost/core/observer/stats"
@@ -18,6 +20,15 @@ import (
 var httpReportURL string
 var configReportURL string
 var httpAESCrypto *crypto.AESCrypto // 新增：HTTP上报加密器
+var reportURLPreferenceMutex sync.RWMutex
+var preferredUploadURL string
+var preferredConfigURL string
+var reportDo = func(ctx context.Context, req *http.Request, timeout time.Duration) (*http.Response, error) {
+	client := &http.Client{
+		Timeout: timeout,
+	}
+	return client.Do(req.WithContext(ctx))
+}
 
 // TrafficReportItem 流量报告项（压缩格式）
 type TrafficReportItem struct {
@@ -27,8 +38,17 @@ type TrafficReportItem struct {
 }
 
 func SetHTTPReportURL(addr string, secret string) {
-	httpReportURL = "http://" + addr + "/flow/upload?secret=" + secret
-	configReportURL = "http://" + addr + "/flow/config?secret=" + secret
+	uploadURLs, configURLs := buildReportURLCandidates(addr, secret)
+	if len(uploadURLs) > 0 {
+		httpReportURL = strings.Join(uploadURLs, ",")
+	}
+	if len(configURLs) > 0 {
+		configReportURL = strings.Join(configURLs, ",")
+	}
+	reportURLPreferenceMutex.Lock()
+	preferredUploadURL = ""
+	preferredConfigURL = ""
+	reportURLPreferenceMutex.Unlock()
 
 	// 创建 AES 加密器
 	var err error
@@ -41,8 +61,173 @@ func SetHTTPReportURL(addr string, secret string) {
 	}
 }
 
+func buildReportURLCandidates(addr string, secret string) (upload []string, config []string) {
+	normalizedAddr, explicitScheme := normalizeReportAddress(addr)
+	if normalizedAddr == "" {
+		normalizedAddr = strings.TrimSpace(addr)
+	}
+
+	schemes := []string{"https", "http"}
+	if mappedScheme := mapToHTTPScheme(explicitScheme); mappedScheme == "http" {
+		schemes = []string{"http", "https"}
+	}
+
+	upload = []string{
+		schemes[0] + "://" + normalizedAddr + "/flow/upload?secret=" + secret,
+		schemes[1] + "://" + normalizedAddr + "/flow/upload?secret=" + secret,
+	}
+	config = []string{
+		schemes[0] + "://" + normalizedAddr + "/flow/config?secret=" + secret,
+		schemes[1] + "://" + normalizedAddr + "/flow/config?secret=" + secret,
+	}
+	return upload, config
+}
+
+func normalizeReportAddress(addr string) (string, string) {
+	raw := strings.TrimSpace(addr)
+	if raw == "" {
+		return "", ""
+	}
+
+	scheme := ""
+	if idx := strings.Index(raw, "://"); idx > 0 {
+		scheme = strings.ToLower(strings.TrimSpace(raw[:idx]))
+		if parsed, err := url.Parse(raw); err == nil {
+			if host := strings.TrimSpace(parsed.Host); host != "" {
+				return host, scheme
+			}
+		}
+		raw = raw[idx+3:]
+	}
+
+	if idx := strings.IndexAny(raw, "/?#"); idx >= 0 {
+		raw = raw[:idx]
+	}
+	return strings.TrimSpace(raw), scheme
+}
+
+func mapToHTTPScheme(scheme string) string {
+	switch strings.ToLower(strings.TrimSpace(scheme)) {
+	case "https", "wss":
+		return "https"
+	case "http", "ws":
+		return "http"
+	default:
+		return ""
+	}
+}
+
+func loadPreferredURL(preferred *string) string {
+	if preferred == nil {
+		return ""
+	}
+
+	reportURLPreferenceMutex.RLock()
+	defer reportURLPreferenceMutex.RUnlock()
+	return *preferred
+}
+
+func storePreferredURL(preferred *string, value string) {
+	if preferred == nil {
+		return
+	}
+
+	reportURLPreferenceMutex.Lock()
+	defer reportURLPreferenceMutex.Unlock()
+	*preferred = value
+}
+
+func prioritizeURLs(urls []string, preferred string) []string {
+	ordered := append([]string(nil), urls...)
+	if preferred == "" || len(ordered) < 2 {
+		return ordered
+	}
+
+	for i, targetURL := range ordered {
+		if targetURL == preferred {
+			if i > 0 {
+				ordered[0], ordered[i] = ordered[i], ordered[0]
+			}
+			break
+		}
+	}
+
+	return ordered
+}
+
+func postJSONWithFallback(ctx context.Context, urls []string, requestBody []byte, userAgent string, timeout time.Duration, preferred *string) (bool, error) {
+	if len(urls) == 0 {
+		return false, fmt.Errorf("上报URL未设置")
+	}
+
+	orderedURLs := prioritizeURLs(urls, loadPreferredURL(preferred))
+
+	var errs []string
+	for i, targetURL := range orderedURLs {
+		req, err := http.NewRequest("POST", targetURL, bytes.NewBuffer(requestBody))
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("%s => 创建请求失败: %v", targetURL, err))
+			if i < len(orderedURLs)-1 {
+				fmt.Printf("⚠️ HTTP上报尝试失败，准备回退: %s => 创建请求失败: %v\n", targetURL, err)
+			}
+			continue
+		}
+
+		req.Header.Set("Content-Type", "application/json")
+		req.Header.Set("User-Agent", userAgent)
+
+		resp, err := reportDo(ctx, req, timeout)
+		if err != nil {
+			errs = append(errs, fmt.Sprintf("%s => 请求失败: %v", targetURL, err))
+			if i < len(orderedURLs)-1 {
+				fmt.Printf("⚠️ HTTP上报尝试失败，准备回退: %s => 请求失败: %v\n", targetURL, err)
+			}
+			continue
+		}
+
+		var responseBytes bytes.Buffer
+		_, readErr := responseBytes.ReadFrom(resp.Body)
+		resp.Body.Close()
+		if readErr != nil {
+			errs = append(errs, fmt.Sprintf("%s => 读取响应失败: %v", targetURL, readErr))
+			if i < len(orderedURLs)-1 {
+				fmt.Printf("⚠️ HTTP上报尝试失败，准备回退: %s => 读取响应失败: %v\n", targetURL, readErr)
+			}
+			continue
+		}
+
+		if resp.StatusCode != http.StatusOK {
+			errs = append(errs, fmt.Sprintf("%s => HTTP响应错误: %d %s", targetURL, resp.StatusCode, resp.Status))
+			if i < len(orderedURLs)-1 {
+				fmt.Printf("⚠️ HTTP上报尝试失败，准备回退: %s => HTTP响应错误: %d %s\n", targetURL, resp.StatusCode, resp.Status)
+			}
+			continue
+		}
+
+		responseText := strings.TrimSpace(responseBytes.String())
+		if responseText == "ok" {
+			if i > 0 {
+				fmt.Printf("↪️ HTTP上报已自动回退到: %s\n", targetURL)
+			}
+			storePreferredURL(preferred, targetURL)
+			return true, nil
+		}
+
+		errs = append(errs, fmt.Sprintf("%s => 服务器响应: %s (期望: ok)", targetURL, responseText))
+		if i < len(orderedURLs)-1 {
+			fmt.Printf("⚠️ HTTP上报尝试失败，准备回退: %s => 服务器响应: %s (期望: ok)\n", targetURL, responseText)
+		}
+	}
+
+	return false, fmt.Errorf("发送HTTP请求失败: %s", strings.Join(errs, " | "))
+}
+
 // sendBatchTrafficReport 批量发送多个服务的流量报告到HTTP接口
 func sendBatchTrafficReport(ctx context.Context, reportItems []TrafficReportItem) (bool, error) {
+	if httpReportURL == "" {
+		return false, fmt.Errorf("流量上报URL未设置")
+	}
+
 	jsonData, err := json.Marshal(reportItems)
 	if err != nil {
 		return false, fmt.Errorf("序列化报告数据失败: %v", err)
@@ -73,46 +258,16 @@ func sendBatchTrafficReport(ctx context.Context, reportItems []TrafficReportItem
 		requestBody = jsonData
 	}
 
-	req, err := http.NewRequestWithContext(ctx, "POST", httpReportURL, bytes.NewBuffer(requestBody))
-	if err != nil {
-		return false, fmt.Errorf("创建HTTP请求失败: %v", err)
-	}
-
-	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("User-Agent", "GOST-Traffic-Reporter/1.0")
-
-	client := &http.Client{
-		Timeout: 5 * time.Second,
-	}
-
-	resp, err := client.Do(req)
-	if err != nil {
-		return false, fmt.Errorf("发送HTTP请求失败: %v", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		return false, fmt.Errorf("HTTP响应错误: %d %s", resp.StatusCode, resp.Status)
-	}
-
-	// 读取响应内容
-	var responseBytes bytes.Buffer
-	_, err = responseBytes.ReadFrom(resp.Body)
-	if err != nil {
-		return false, fmt.Errorf("读取响应内容失败: %v", err)
-	}
-
-	responseText := strings.TrimSpace(responseBytes.String())
-
-	// 检查响应是否为"ok"
-	if responseText == "ok" {
-		return true, nil
-	} else {
-		return false, fmt.Errorf("服务器响应: %s (期望: ok)", responseText)
-	}
+	return postJSONWithFallback(
+		ctx,
+		strings.Split(httpReportURL, ","),
+		requestBody,
+		"GOST-Traffic-Reporter/1.0",
+		5*time.Second,
+		&preferredUploadURL,
+	)
 }
 
-
 // sendConfigReport 发送配置报告到HTTP接口
 func sendConfigReport(ctx context.Context) (bool, error) {
 	if configReportURL == "" {
@@ -150,43 +305,14 @@ func sendConfigReport(ctx context.Context) (bool, error) {
 		requestBody = configData
 	}
 
-	req, err := http.NewRequestWithContext(ctx, "POST", configReportURL, bytes.NewBuffer(requestBody))
-	if err != nil {
-		return false, fmt.Errorf("创建HTTP请求失败: %v", err)
-	}
-
-	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("User-Agent", "Config-Reporter/1.0")
-
-	client := &http.Client{
-		Timeout: 10 * time.Second, // 配置上报可以稍长一些
-	}
-
-	resp, err := client.Do(req)
-	if err != nil {
-		return false, fmt.Errorf("发送HTTP请求失败: %v", err)
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK {
-		return false, fmt.Errorf("HTTP响应错误: %d %s", resp.StatusCode, resp.Status)
-	}
-
-	// 读取响应内容
-	var responseBytes bytes.Buffer
-	_, err = responseBytes.ReadFrom(resp.Body)
-	if err != nil {
-		return false, fmt.Errorf("读取响应内容失败: %v", err)
-	}
-
-	responseText := strings.TrimSpace(responseBytes.String())
-
-	// 检查响应是否为"ok"
-	if responseText == "ok" {
-		return true, nil
-	} else {
-		return false, fmt.Errorf("服务器响应: %s (期望: ok)", responseText)
-	}
+	return postJSONWithFallback(
+		ctx,
+		strings.Split(configReportURL, ","),
+		requestBody,
+		"Config-Reporter/1.0",
+		10*time.Second,
+		&preferredConfigURL,
+	)
 }
 
 // StartConfigReporter 启动配置定时上报器（每10分钟上报一次）

go-gost/x/service/traffic_reporter_test.go

@@ -0,0 +1,150 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestBuildReportURLCandidatesSecureFirst(t *testing.T) {
+	upload, config := buildReportURLCandidates("panel.example.com:443", "abc")
+
+	if len(upload) != 2 {
+		t.Fatalf("expected 2 upload candidates, got %d", len(upload))
+	}
+	if len(config) != 2 {
+		t.Fatalf("expected 2 config candidates, got %d", len(config))
+	}
+
+	if upload[0] != "https://panel.example.com:443/flow/upload?secret=abc" {
+		t.Fatalf("unexpected upload[0]: %s", upload[0])
+	}
+	if upload[1] != "http://panel.example.com:443/flow/upload?secret=abc" {
+		t.Fatalf("unexpected upload[1]: %s", upload[1])
+	}
+	if config[0] != "https://panel.example.com:443/flow/config?secret=abc" {
+		t.Fatalf("unexpected config[0]: %s", config[0])
+	}
+	if config[1] != "http://panel.example.com:443/flow/config?secret=abc" {
+		t.Fatalf("unexpected config[1]: %s", config[1])
+	}
+}
+
+func TestBuildReportURLCandidatesNormalizeSchemeAddr(t *testing.T) {
+	upload, config := buildReportURLCandidates("https://panel.example.com:8443/path", "abc")
+
+	if upload[0] != "https://panel.example.com:8443/flow/upload?secret=abc" {
+		t.Fatalf("unexpected upload[0]: %s", upload[0])
+	}
+	if upload[1] != "http://panel.example.com:8443/flow/upload?secret=abc" {
+		t.Fatalf("unexpected upload[1]: %s", upload[1])
+	}
+	if config[0] != "https://panel.example.com:8443/flow/config?secret=abc" {
+		t.Fatalf("unexpected config[0]: %s", config[0])
+	}
+	if config[1] != "http://panel.example.com:8443/flow/config?secret=abc" {
+		t.Fatalf("unexpected config[1]: %s", config[1])
+	}
+}
+
+func TestPostJSONWithFallbackUsesHTTPAfterHTTPSFailure(t *testing.T) {
+	orig := reportDo
+	defer func() { reportDo = orig }()
+
+	var calls []string
+	reportDo = func(_ context.Context, req *http.Request, _ time.Duration) (*http.Response, error) {
+		calls = append(calls, req.URL.String())
+		if strings.HasPrefix(req.URL.String(), "https://") {
+			return nil, errors.New("tls handshake failed")
+		}
+		return &http.Response{
+			StatusCode: http.StatusOK,
+			Body:       io.NopCloser(strings.NewReader("ok")),
+		}, nil
+	}
+
+	ok, err := postJSONWithFallback(
+		context.Background(),
+		[]string{
+			"https://panel.example.com:443/flow/upload?secret=abc",
+			"http://panel.example.com:443/flow/upload?secret=abc",
+		},
+		[]byte(`[]`),
+		"GOST-Traffic-Reporter/1.0",
+		5*time.Second,
+		nil,
+	)
+	if !ok || err != nil {
+		t.Fatalf("expected fallback success, ok=%v err=%v", ok, err)
+	}
+	if len(calls) != 2 {
+		t.Fatalf("expected 2 calls, got %d", len(calls))
+	}
+	if !strings.HasPrefix(calls[0], "https://") || !strings.HasPrefix(calls[1], "http://") {
+		t.Fatalf("unexpected call order: %#v", calls)
+	}
+}
+
+func TestPostJSONWithFallbackRemembersDetectedURL(t *testing.T) {
+	orig := reportDo
+	defer func() { reportDo = orig }()
+
+	targets := []string{
+		"https://panel.example.com:443/flow/upload?secret=abc",
+		"http://panel.example.com:443/flow/upload?secret=abc",
+	}
+
+	var preferred string
+	var calls []string
+	reportDo = func(_ context.Context, req *http.Request, _ time.Duration) (*http.Response, error) {
+		calls = append(calls, req.URL.String())
+		if strings.HasPrefix(req.URL.String(), "https://") {
+			return nil, errors.New("tls handshake failed")
+		}
+		return &http.Response{
+			StatusCode: http.StatusOK,
+			Body:       io.NopCloser(strings.NewReader("ok")),
+		}, nil
+	}
+
+	ok, err := postJSONWithFallback(
+		context.Background(),
+		targets,
+		[]byte(`[]`),
+		"GOST-Traffic-Reporter/1.0",
+		5*time.Second,
+		&preferred,
+	)
+	if !ok || err != nil {
+		t.Fatalf("expected first call success, ok=%v err=%v", ok, err)
+	}
+	if preferred != targets[1] {
+		t.Fatalf("expected preferred url to be remembered as %s, got %s", targets[1], preferred)
+	}
+	if len(calls) != 2 {
+		t.Fatalf("expected 2 calls on first attempt, got %d", len(calls))
+	}
+
+	calls = nil
+	ok, err = postJSONWithFallback(
+		context.Background(),
+		targets,
+		[]byte(`[]`),
+		"GOST-Traffic-Reporter/1.0",
+		5*time.Second,
+		&preferred,
+	)
+	if !ok || err != nil {
+		t.Fatalf("expected second call success, ok=%v err=%v", ok, err)
+	}
+	if len(calls) != 1 {
+		t.Fatalf("expected second call to use remembered url once, got %d calls", len(calls))
+	}
+	if !strings.HasPrefix(calls[0], "http://") {
+		t.Fatalf("expected remembered http url first, got %s", calls[0])
+	}
+}

go-gost/x/socket/AGENTS.md

@@ -1,6 +1,9 @@
 # GOST SOCKET KNOWLEDGE BASE
 
-**Generated:** Sun Feb 15 2026
+**Generated:** Fri Mar 20 2026
+**Commit:** f45f960
+**Branch:** main
+**Tag:** 2.1.9-beta6
 
 ## OVERVIEW
 WebSocket reporter and socket utilities for panel integration.

go-gost/x/socket/websocket_reporter.go

@@ -9,6 +9,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"math/rand"
 	"net"
 	"net/http"
 	"net/url"
@@ -17,7 +18,7 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
-	"sync" // 新增：用于管理连接状态的互斥锁
+	"sync"
 	"time"
 
 	"github.com/go-gost/x/config"
@@ -25,34 +26,67 @@ import (
 	"github.com/go-gost/x/service"
 	"github.com/gorilla/websocket"
 	"github.com/shirou/gopsutil/v3/cpu"
+	"github.com/shirou/gopsutil/v3/disk"
 	"github.com/shirou/gopsutil/v3/host"
+	"github.com/shirou/gopsutil/v3/load"
 	"github.com/shirou/gopsutil/v3/mem"
 	psnet "github.com/shirou/gopsutil/v3/net"
+	"golang.org/x/net/icmp"
+	"golang.org/x/net/ipv4"
+	"golang.org/x/net/ipv6"
 )
 
 // SystemInfo 系统信息结构体
 type SystemInfo struct {
-	Uptime           uint64  `json:"uptime"`            // 开机时间	（秒）
-	BytesReceived    uint64  `json:"bytes_received"`    // 接收字节数
-	BytesTransmitted uint64  `json:"bytes_transmitted"` // 发送字节数
-	CPUUsage         float64 `json:"cpu_usage"`         // CPU使用率（百分比）
-	MemoryUsage      float64 `json:"memory_usage"`      // 内存使用率（百分比）
+	Uptime           uint64  `json:"uptime"`
+	BytesReceived    uint64  `json:"bytes_received"`
+	BytesTransmitted uint64  `json:"bytes_transmitted"`
+	CPUUsage         float64 `json:"cpu_usage"`
+	MemoryUsage      float64 `json:"memory_usage"`
+	DiskUsage        float64 `json:"disk_usage"`
+	Load1            float64 `json:"load1"`
+	Load5            float64 `json:"load5"`
+	Load15           float64 `json:"load15"`
+	TCPConns         int64   `json:"tcp_conns"`
+	UDPConns         int64   `json:"udp_conns"`
+	NetInSpeed       int64   `json:"net_in_speed"`
+	NetOutSpeed      int64   `json:"net_out_speed"`
 }
 
 // NetworkStats 网络统计信息
 type NetworkStats struct {
-	BytesReceived    uint64 `json:"bytes_received"`    // 接收字节数
-	BytesTransmitted uint64 `json:"bytes_transmitted"` // 发送字节数
+	BytesReceived    uint64 `json:"bytes_received"`
+	BytesTransmitted uint64 `json:"bytes_transmitted"`
+	BytesRecvDelta   uint64 `json:"bytes_recv_delta"`
+	BytesSentDelta   uint64 `json:"bytes_sent_delta"`
 }
 
 // CPUInfo CPU信息
 type CPUInfo struct {
-	Usage float64 `json:"usage"` // CPU使用率（百分比）
+	Usage float64 `json:"usage"`
 }
 
 // MemoryInfo 内存信息
 type MemoryInfo struct {
-	Usage float64 `json:"usage"` // 内存使用率（百分比）
+	Usage float64 `json:"usage"`
+}
+
+// DiskInfo 磁盘信息
+type DiskInfo struct {
+	Usage float64 `json:"usage"`
+}
+
+// LoadInfo 负载信息
+type LoadInfo struct {
+	Load1  float64 `json:"load1"`
+	Load5  float64 `json:"load5"`
+	Load15 float64 `json:"load15"`
+}
+
+// ConnectionInfo 连接信息
+type ConnectionInfo struct {
+	TCPConns int64 `json:"tcp_conns"`
+	UDPConns int64 `json:"udp_conns"`
 }
 
 // CommandMessage 命令消息结构体
@@ -91,26 +125,53 @@ type TcpPingResponse struct {
 	RequestId    string  `json:"requestId,omitempty"`
 }
 
+// ServiceMonitorCheckRequest service monitor check request.
+type ServiceMonitorCheckRequest struct {
+	MonitorID  int64  `json:"monitorId"`
+	Type       string `json:"type"` // tcp|icmp
+	Target     string `json:"target"`
+	TimeoutSec int    `json:"timeoutSec"`
+}
+
+// ServiceMonitorCheckResult node-executed check output.
+// CommandResponse.Success indicates command execution status.
+// Actual check success is represented by this struct.
+type ServiceMonitorCheckResult struct {
+	MonitorID    int64   `json:"monitorId"`
+	Success      bool    `json:"success"`
+	LatencyMs    float64 `json:"latencyMs"`
+	StatusCode   int     `json:"statusCode,omitempty"`
+	ErrorMessage string  `json:"errorMessage,omitempty"`
+}
+
 const (
 	reporterReadWait  = 60 * time.Second
 	reporterWriteWait = 5 * time.Second
+	wsPingInterval    = 20 * time.Second // 独立 WebSocket ping 间隔
+	initialBackoff    = 2 * time.Second  // 重连初始退避
+	maxBackoff        = 2 * time.Minute  // 重连最大退避
 )
 
 type WebSocketReporter struct {
-	url            string
-	addr           string // 保存服务器地址
-	secret         string // 保存密钥
-	version        string // 保存版本号
-	conn           *websocket.Conn
-	reconnectTime  time.Duration
-	pingInterval   time.Duration
-	configInterval time.Duration
-	ctx            context.Context
-	cancel         context.CancelFunc
-	connected      bool
-	connecting     bool              // 新增：正在连接状态
-	connMutex      sync.Mutex        // 新增：连接状态锁
-	aesCrypto      *crypto.AESCrypto // 新增：AES加密器
+	url               string
+	addr              string // 保存服务器地址
+	secret            string // 保存密钥
+	version           string // 保存版本号
+	preferredWSScheme string
+	conn              *websocket.Conn
+	curBackoff        time.Duration // 当前重连退避间隔
+	pingInterval      time.Duration
+	configInterval    time.Duration
+	ctx               context.Context
+	cancel            context.CancelFunc
+	connected         bool
+	connecting        bool              // 正在连接状态
+	connMutex         sync.Mutex        // 连接状态锁
+	aesCrypto         *crypto.AESCrypto // AES加密器
+}
+
+var wsDial = func(dialer *websocket.Dialer, rawURL string) (*websocket.Conn, *http.Response, error) {
+	return dialer.Dial(rawURL, nil)
 }
 
 // NewWebSocketReporter 创建一个新的WebSocket报告器
@@ -128,8 +189,8 @@ func NewWebSocketReporter(serverURL string, secret string) *WebSocketReporter {
 
 	return &WebSocketReporter{
 		url:            serverURL,
-		reconnectTime:  5 * time.Second,  // 重连间隔
-		pingInterval:   2 * time.Second,  // 发送间隔改为2秒
+		curBackoff:     initialBackoff,   // 当前退避间隔
+		pingInterval:   5 * time.Second,  // 指标上报间隔
 		configInterval: 10 * time.Minute, // 配置上报间隔
 		ctx:            ctx,
 		cancel:         cancel,
@@ -147,10 +208,17 @@ func (w *WebSocketReporter) Start() {
 // Stop 停止WebSocket报告器
 func (w *WebSocketReporter) Stop() {
 	w.cancel()
+	w.connMutex.Lock()
 	if w.conn != nil {
 		w.conn.Close()
 	}
+	w.connMutex.Unlock()
+}
 
+// backoffWithJitter 返回带随机抖动的退避时间（±25%）
+func backoffWithJitter(base time.Duration) time.Duration {
+	jitter := time.Duration(float64(base) * (0.75 + rand.Float64()*0.5))
+	return jitter
 }
 
 // run 主运行循环
@@ -167,23 +235,32 @@ func (w *WebSocketReporter) run() {
 
 			if needConnect {
 				if err := w.connect(); err != nil {
-					fmt.Printf("❌ WebSocket连接失败: %v，%v后重试\n", err, w.reconnectTime)
+					wait := backoffWithJitter(w.curBackoff)
+					fmt.Printf("❌ WebSocket连接失败: %v，%v后重试\n", err, wait)
+					// 指数退避：翻倍当前退避间隔，上限 maxBackoff
+					w.curBackoff *= 2
+					if w.curBackoff > maxBackoff {
+						w.curBackoff = maxBackoff
+					}
 					select {
-					case <-time.After(w.reconnectTime):
+					case <-time.After(wait):
 						continue
 					case <-w.ctx.Done():
 						return
 					}
 				}
+				// 连接成功：重置退避
+				w.curBackoff = initialBackoff
 			}
 
 			// 连接成功，开始发送消息
 			if w.connected {
 				w.handleConnection()
 			} else {
+				wait := backoffWithJitter(w.curBackoff)
 				// 如果连接失败，等待重试
 				select {
-				case <-time.After(w.reconnectTime):
+				case <-time.After(wait):
 					continue
 				case <-w.ctx.Done():
 					return
@@ -223,21 +300,14 @@ func (w *WebSocketReporter) connect() error {
 		json.Unmarshal(b, &cfg)
 	}
 
-	// 使用最新的配置重新构建 URL
-	currentURL := "ws://" + w.addr + "/system-info?type=1&secret=" + w.secret + "&version=" + w.version +
-		"&http=" + strconv.Itoa(cfg.Http) + "&tls=" + strconv.Itoa(cfg.Tls) + "&socks=" + strconv.Itoa(cfg.Socks)
-
-	u, err := url.Parse(currentURL)
-	if err != nil {
-		return fmt.Errorf("解析URL失败: %v", err)
-	}
+	candidates := buildWebSocketCandidates(w.addr, w.secret, w.version, cfg.Http, cfg.Tls, cfg.Socks, w.preferredWSScheme)
 
 	dialer := websocket.DefaultDialer
 	dialer.HandshakeTimeout = 10 * time.Second
 
-	conn, _, err := dialer.Dial(u.String(), nil)
+	conn, usedURL, err := dialWebSocketWithFallback(dialer, candidates)
 	if err != nil {
-		return fmt.Errorf("连接WebSocket失败: %v", err)
+		return err
 	}
 
 	// 如果在连接过程中已经有连接了，关闭新连接
@@ -248,6 +318,9 @@ func (w *WebSocketReporter) connect() error {
 
 	w.conn = conn
 	w.connected = true
+	if scheme := detectWebSocketScheme(usedURL); scheme != "" {
+		w.preferredWSScheme = scheme
+	}
 	_ = conn.SetReadDeadline(time.Now().Add(reporterReadWait))
 	conn.SetPingHandler(func(appData string) error {
 		_ = conn.SetReadDeadline(time.Now().Add(reporterReadWait))
@@ -265,10 +338,145 @@ func (w *WebSocketReporter) connect() error {
 		return nil
 	})
 
-	fmt.Printf("✅ WebSocket连接建立成功 (http=%d, tls=%d, socks=%d)\n", cfg.Http, cfg.Tls, cfg.Socks)
+	fmt.Printf("✅ WebSocket连接建立成功 (%s, http=%d, tls=%d, socks=%d)\n", sanitizeWebSocketURL(usedURL), cfg.Http, cfg.Tls, cfg.Socks)
 	return nil
 }
 
+func buildWebSocketCandidates(addr string, secret string, version string, http int, tls int, socks int, preferredScheme string) []string {
+	normalizedAddr, explicitScheme := normalizeReporterAddress(addr)
+	if normalizedAddr == "" {
+		normalizedAddr = strings.TrimSpace(addr)
+	}
+
+	query := "/system-info?type=1&secret=" + secret + "&version=" + version +
+		"&http=" + strconv.Itoa(http) + "&tls=" + strconv.Itoa(tls) + "&socks=" + strconv.Itoa(socks)
+
+	schemes := []string{"wss", "ws"}
+	if mappedScheme := mapToWebSocketScheme(explicitScheme); mappedScheme != "" {
+		if mappedScheme == "ws" {
+			schemes = []string{"ws", "wss"}
+		}
+	} else if preferredScheme == "ws" {
+		schemes = []string{"ws", "wss"}
+	}
+
+	return []string{
+		schemes[0] + "://" + normalizedAddr + query,
+		schemes[1] + "://" + normalizedAddr + query,
+	}
+}
+
+func normalizeReporterAddress(addr string) (string, string) {
+	raw := strings.TrimSpace(addr)
+	if raw == "" {
+		return "", ""
+	}
+
+	scheme := ""
+	if idx := strings.Index(raw, "://"); idx > 0 {
+		scheme = strings.ToLower(strings.TrimSpace(raw[:idx]))
+		if parsed, err := url.Parse(raw); err == nil {
+			if host := strings.TrimSpace(parsed.Host); host != "" {
+				return host, scheme
+			}
+		}
+		raw = raw[idx+3:]
+	}
+
+	if idx := strings.IndexAny(raw, "/?#"); idx >= 0 {
+		raw = raw[:idx]
+	}
+	return strings.TrimSpace(raw), scheme
+}
+
+func mapToWebSocketScheme(scheme string) string {
+	switch strings.ToLower(strings.TrimSpace(scheme)) {
+	case "wss", "https":
+		return "wss"
+	case "ws", "http":
+		return "ws"
+	default:
+		return ""
+	}
+}
+
+func detectWebSocketScheme(rawURL string) string {
+	if strings.HasPrefix(rawURL, "wss://") {
+		return "wss"
+	}
+	if strings.HasPrefix(rawURL, "ws://") {
+		return "ws"
+	}
+	return ""
+}
+
+func dialWebSocketWithFallback(dialer *websocket.Dialer, candidates []string) (*websocket.Conn, string, error) {
+	if len(candidates) == 0 {
+		return nil, "", fmt.Errorf("WebSocket候选地址为空")
+	}
+
+	var errs []string
+	for i, targetURL := range candidates {
+		conn, resp, err := wsDial(dialer, targetURL)
+		if err == nil {
+			if i > 0 {
+				fmt.Printf("↪️ WebSocket已自动回退成功: %s\n", sanitizeWebSocketURL(targetURL))
+			}
+			return conn, targetURL, nil
+		}
+		errMsg := formatWebSocketDialError(err, resp)
+		errs = append(errs, fmt.Sprintf("%s => %s", sanitizeWebSocketURL(targetURL), errMsg))
+		if i < len(candidates)-1 {
+			fmt.Printf(
+				"⚠️ WebSocket连接失败，准备从 %s 回退到 %s: %s\n",
+				strings.ToUpper(detectWebSocketScheme(targetURL)),
+				strings.ToUpper(detectWebSocketScheme(candidates[i+1])),
+				errMsg,
+			)
+		}
+	}
+
+	return nil, "", fmt.Errorf("连接WebSocket失败（已尝试%d种协议）: %s", len(candidates), strings.Join(errs, " | "))
+}
+
+func sanitizeWebSocketURL(rawURL string) string {
+	u, err := url.Parse(rawURL)
+	if err != nil {
+		return rawURL
+	}
+
+	q := u.Query()
+	if q.Get("secret") != "" {
+		q.Set("secret", "***")
+		u.RawQuery = q.Encode()
+	}
+	return u.String()
+}
+
+func formatWebSocketDialError(err error, resp *http.Response) string {
+	if err == nil {
+		return ""
+	}
+	if resp == nil {
+		return err.Error()
+	}
+
+	msg := fmt.Sprintf("%s (HTTP %s)", err, resp.Status)
+	if resp.Body == nil {
+		return msg
+	}
+
+	body, readErr := io.ReadAll(io.LimitReader(resp.Body, 256))
+	if readErr != nil {
+		return msg
+	}
+	bodyText := strings.TrimSpace(string(body))
+	if bodyText == "" {
+		return msg
+	}
+	return fmt.Sprintf("%s, body=%q", msg, bodyText)
+}
+
 // handleConnection 处理WebSocket连接
 func (w *WebSocketReporter) handleConnection() {
 	defer func() {
@@ -285,15 +493,34 @@ func (w *WebSocketReporter) handleConnection() {
 	// 启动消息接收goroutine
 	go w.receiveMessages()
 
-	// 主发送循环
-	ticker := time.NewTicker(w.pingInterval)
-	defer ticker.Stop()
+	// 指标上报 ticker
+	metricTicker := time.NewTicker(w.pingInterval)
+	defer metricTicker.Stop()
+
+	// 独立 WebSocket keepalive ping ticker
+	pingTicker := time.NewTicker(wsPingInterval)
+	defer pingTicker.Stop()
 
 	for {
 		select {
 		case <-w.ctx.Done():
 			return
-		case <-ticker.C:
+
+		case <-pingTicker.C:
+			// 发送 WebSocket ping 保活，独立于指标上报
+			w.connMutex.Lock()
+			conn := w.conn
+			isConnected := w.connected
+			w.connMutex.Unlock()
+			if !isConnected || conn == nil {
+				return
+			}
+			if err := conn.WriteControl(websocket.PingMessage, nil, time.Now().Add(reporterWriteWait)); err != nil {
+				fmt.Printf("❌ 发送WebSocket ping失败: %v，准备重连\n", err)
+				return
+			}
+
+		case <-metricTicker.C:
 			// 检查连接状态
 			w.connMutex.Lock()
 			isConnected := w.connected
@@ -313,11 +540,35 @@ func (w *WebSocketReporter) handleConnection() {
 	}
 }
 
+var lastNetBytesReceived uint64
+var lastNetBytesTransmitted uint64
+var lastNetTime int64
+
+var connInfoCached ConnectionInfo
+var connInfoCachedAt int64
+var connInfoCachedMu sync.Mutex
+
 // collectSystemInfo 收集系统信息
 func (w *WebSocketReporter) collectSystemInfo() SystemInfo {
 	networkStats := getNetworkStats()
 	cpuInfo := getCPUInfo()
 	memoryInfo := getMemoryInfo()
+	diskInfo := getDiskInfo()
+	loadInfo := getLoadInfo()
+	connInfo := getConnectionInfo()
+
+	now := time.Now().UnixMilli()
+	var netInSpeed, netOutSpeed int64
+	if lastNetTime > 0 {
+		deltaMs := now - lastNetTime
+		if deltaMs > 0 {
+			netInSpeed = int64(float64(networkStats.BytesRecvDelta) * 1000 / float64(deltaMs))
+			netOutSpeed = int64(float64(networkStats.BytesSentDelta) * 1000 / float64(deltaMs))
+		}
+	}
+	lastNetBytesReceived = networkStats.BytesReceived
+	lastNetBytesTransmitted = networkStats.BytesTransmitted
+	lastNetTime = now
 
 	return SystemInfo{
 		Uptime:           getUptime(),
@@ -325,9 +576,48 @@ func (w *WebSocketReporter) collectSystemInfo() SystemInfo {
 		BytesTransmitted: networkStats.BytesTransmitted,
 		CPUUsage:         cpuInfo.Usage,
 		MemoryUsage:      memoryInfo.Usage,
+		DiskUsage:        diskInfo.Usage,
+		Load1:            loadInfo.Load1,
+		Load5:            loadInfo.Load5,
+		Load15:           loadInfo.Load15,
+		TCPConns:         connInfo.TCPConns,
+		UDPConns:         connInfo.UDPConns,
+		NetInSpeed:       netInSpeed,
+		NetOutSpeed:      netOutSpeed,
 	}
 }
 
+// encryptPayload 加密 JSON 数据，返回加密后的消息字节（若加密失败则回退到原始数据）
+func (w *WebSocketReporter) encryptPayload(jsonData []byte) []byte {
+	if w.aesCrypto == nil {
+		return jsonData
+	}
+
+	encryptedData, err := w.aesCrypto.Encrypt(jsonData)
+	if err != nil {
+		fmt.Printf("⚠️ 加密失败，发送原始数据: %v\n", err)
+		return jsonData
+	}
+
+	encryptedMessage := map[string]interface{}{
+		"encrypted": true,
+		"data":      encryptedData,
+		"timestamp": time.Now().Unix(),
+	}
+	messageData, err := json.Marshal(encryptedMessage)
+	if err != nil {
+		fmt.Printf("⚠️ 序列化加密消息失败，发送原始数据: %v\n", err)
+		return jsonData
+	}
+	return messageData
+}
+
+// metricEnvelope wraps SystemInfo with a type field for fast identification on the panel side.
+type metricEnvelope struct {
+	Type string     `json:"type"`
+	Data SystemInfo `json:"data"`
+}
+
 // sendSystemInfo 发送系统信息
 func (w *WebSocketReporter) sendSystemInfo(sysInfo SystemInfo) error {
 	w.connMutex.Lock()
@@ -337,42 +627,19 @@ func (w *WebSocketReporter) sendSystemInfo(sysInfo SystemInfo) error {
 		return fmt.Errorf("连接未建立")
 	}
 
-	// 转换为JSON
-	jsonData, err := json.Marshal(sysInfo)
+	// 使用 type:"metric" 信封包装，Panel 可通过 type 字段直接识别指标消息
+	envelope := metricEnvelope{Type: "metric", Data: sysInfo}
+	jsonData, err := json.Marshal(envelope)
 	if err != nil {
 		return fmt.Errorf("序列化系统信息失败: %v", err)
 	}
 
-	var messageData []byte
+	messageData := w.encryptPayload(jsonData)
 
-	// 如果有加密器，则加密数据
-	if w.aesCrypto != nil {
-		encryptedData, err := w.aesCrypto.Encrypt(jsonData)
-		if err != nil {
-			fmt.Printf("⚠️ 加密失败，发送原始数据: %v\n", err)
-			messageData = jsonData
-		} else {
-			// 创建加密消息包装器
-			encryptedMessage := map[string]interface{}{
-				"encrypted": true,
-				"data":      encryptedData,
-				"timestamp": time.Now().Unix(),
-			}
-			messageData, err = json.Marshal(encryptedMessage)
-			if err != nil {
-				fmt.Printf("⚠️ 序列化加密消息失败，发送原始数据: %v\n", err)
-				messageData = jsonData
-			}
-		}
-	} else {
-		messageData = jsonData
-	}
-
-	// 设置写入超时
 	w.conn.SetWriteDeadline(time.Now().Add(5 * time.Second))
 
 	if err := w.conn.WriteMessage(websocket.TextMessage, messageData); err != nil {
-		w.connected = false // 标记连接已断开
+		w.connected = false
 		return fmt.Errorf("写入消息失败: %v", err)
 	}
 
@@ -381,23 +648,19 @@ func (w *WebSocketReporter) sendSystemInfo(sysInfo SystemInfo) error {
 
 // receiveMessages 接收服务端发送的消息
 func (w *WebSocketReporter) receiveMessages() {
+	// 获取连接引用一次即可，连接生命周期由 handleConnection 管理
+	w.connMutex.Lock()
+	conn := w.conn
+	w.connMutex.Unlock()
+	if conn == nil {
+		return
+	}
+
 	for {
 		select {
 		case <-w.ctx.Done():
 			return
 		default:
-			w.connMutex.Lock()
-			conn := w.conn
-			connected := w.connected
-			w.connMutex.Unlock()
-
-			if conn == nil || !connected {
-				return
-			}
-
-			// 设置读取超时
-			conn.SetReadDeadline(time.Now().Add(reporterReadWait))
-
 			messageType, message, err := conn.ReadMessage()
 			if err != nil {
 				if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
@@ -485,12 +748,8 @@ func (w *WebSocketReporter) handleReceivedMessage(messageType int, message []byt
 			}
 
 			if cmdMsg.Type != "call" {
-				// 其他状态变更命令保持同步，确保顺序执行
-				if cmdMsg.Type == "TcpPing" || cmdMsg.Type == "UpgradeAgent" || cmdMsg.Type == "RollbackAgent" {
-					go w.routeCommand(cmdMsg)
-				} else {
-					w.routeCommand(cmdMsg)
-				}
+				// 所有命令统一异步执行，避免阻塞消息接收循环
+				go w.routeCommand(cmdMsg)
 			}
 		} else {
 			// 处理普通消息
@@ -501,12 +760,8 @@ func (w *WebSocketReporter) handleReceivedMessage(messageType int, message []byt
 				return
 			}
 			if cmdMsg.Type != "call" {
-				// 其他状态变更命令保持同步，确保顺序执行
-				if cmdMsg.Type == "TcpPing" || cmdMsg.Type == "UpgradeAgent" || cmdMsg.Type == "RollbackAgent" {
-					go w.routeCommand(cmdMsg)
-				} else {
-					w.routeCommand(cmdMsg)
-				}
+				// 所有命令统一异步执行，避免阻塞消息接收循环
+				go w.routeCommand(cmdMsg)
 			}
 		}
 
@@ -590,6 +845,13 @@ func (w *WebSocketReporter) routeCommand(cmd CommandMessage) {
 		response.Data = tcpPingResult
 		// needSaveConfig = false (默认值)
 
+	// Service monitor check (read-only)
+	case "ServiceMonitorCheck":
+		var checkResult ServiceMonitorCheckResult
+		checkResult, err = w.handleServiceMonitorCheck(cmd.Data)
+		response.Type = "ServiceMonitorCheckResponse"
+		response.Data = checkResult
+
 	// Protocol blocking switches
 	case "SetProtocol":
 		err = w.handleSetProtocol(cmd.Data)
@@ -1173,30 +1435,7 @@ func (w *WebSocketReporter) sendResponse(response CommandResponse) {
 		return
 	}
 
-	var messageData []byte
-
-	// 如果有加密器，则加密数据
-	if w.aesCrypto != nil {
-		encryptedData, err := w.aesCrypto.Encrypt(jsonData)
-		if err != nil {
-			fmt.Printf("⚠️ 加密响应失败，发送原始数据: %v\n", err)
-			messageData = jsonData
-		} else {
-			// 创建加密消息包装器
-			encryptedMessage := map[string]interface{}{
-				"encrypted": true,
-				"data":      encryptedData,
-				"timestamp": time.Now().Unix(),
-			}
-			messageData, err = json.Marshal(encryptedMessage)
-			if err != nil {
-				fmt.Printf("⚠️ 序列化加密响应失败，发送原始数据: %v\n", err)
-				messageData = jsonData
-			}
-		}
-	} else {
-		messageData = jsonData
-	}
+	messageData := w.encryptPayload(jsonData)
 
 	// 检查消息大小，如果超过10MB则记录警告
 	if len(messageData) > 10*1024*1024 {
@@ -1245,17 +1484,21 @@ func getNetworkStats() NetworkStats {
 		return stats
 	}
 
-	// 汇总所有非回环接口的流量
 	for _, io := range ioCounters {
-		// 跳过回环接口
 		if io.Name == "lo" || strings.HasPrefix(io.Name, "lo") {
 			continue
 		}
-
 		stats.BytesReceived += io.BytesRecv
 		stats.BytesTransmitted += io.BytesSent
 	}
 
+	if lastNetBytesReceived > 0 && stats.BytesReceived >= lastNetBytesReceived {
+		stats.BytesRecvDelta = stats.BytesReceived - lastNetBytesReceived
+	}
+	if lastNetBytesTransmitted > 0 && stats.BytesTransmitted >= lastNetBytesTransmitted {
+		stats.BytesSentDelta = stats.BytesTransmitted - lastNetBytesTransmitted
+	}
+
 	return stats
 }
 
@@ -1263,8 +1506,8 @@ func getNetworkStats() NetworkStats {
 func getCPUInfo() CPUInfo {
 	var cpuInfo CPUInfo
 
-	// 获取CPU使用率
-	percentages, err := cpu.Percent(time.Second, false)
+	// 获取CPU使用率 (non-blocking)
+	percentages, err := cpu.Percent(0, false)
 	if err == nil && len(percentages) > 0 {
 		cpuInfo.Usage = percentages[0]
 	}
@@ -1286,11 +1529,75 @@ func getMemoryInfo() MemoryInfo {
 	return memInfo
 }
 
+// getDiskInfo 获取磁盘信息
+func getDiskInfo() DiskInfo {
+	var diskInfo DiskInfo
+
+	usage, err := disk.Usage("/")
+	if err != nil {
+		return diskInfo
+	}
+
+	diskInfo.Usage = usage.UsedPercent
+
+	return diskInfo
+}
+
+// getLoadInfo 获取负载信息
+func getLoadInfo() LoadInfo {
+	var loadInfo LoadInfo
+
+	avg, err := load.Avg()
+	if err != nil {
+		return loadInfo
+	}
+
+	loadInfo.Load1 = avg.Load1
+	loadInfo.Load5 = avg.Load5
+	loadInfo.Load15 = avg.Load15
+
+	return loadInfo
+}
+
+// getConnectionInfo 获取连接信息
+func getConnectionInfo() ConnectionInfo {
+	now := time.Now().UnixMilli()
+	const refreshEveryMs = int64((15 * time.Second) / time.Millisecond)
+
+	connInfoCachedMu.Lock()
+	if connInfoCachedAt > 0 && now-connInfoCachedAt < refreshEveryMs {
+		v := connInfoCached
+		connInfoCachedMu.Unlock()
+		return v
+	}
+	connInfoCachedMu.Unlock()
+
+	var connInfo ConnectionInfo
+
+	connStats, err := psnet.Connections("tcp")
+	if err == nil {
+		connInfo.TCPConns = int64(len(connStats))
+	}
+
+	udpStats, err := psnet.Connections("udp")
+	if err == nil {
+		connInfo.UDPConns = int64(len(udpStats))
+	}
+
+	connInfoCachedMu.Lock()
+	connInfoCached = connInfo
+	connInfoCachedAt = now
+	connInfoCachedMu.Unlock()
+
+	return connInfo
+}
+
 // StartWebSocketReporterWithConfig 使用配置字段启动WebSocket报告器
 func StartWebSocketReporterWithConfig(addr string, secret string, http int, tls int, socks int, version string) *WebSocketReporter {
 
 	// 构建初始 WebSocket URL
-	fullURL := "ws://" + addr + "/system-info?type=1&secret=" + secret + "&version=" + version + "&http=" + strconv.Itoa(http) + "&tls=" + strconv.Itoa(tls) + "&socks=" + strconv.Itoa(socks)
+	candidates := buildWebSocketCandidates(addr, secret, version, http, tls, socks, "")
+	fullURL := candidates[0]
 
 	fmt.Printf("🔗 WebSocket连接URL: %s\n", fullURL)
 
@@ -1366,6 +1673,210 @@ func (w *WebSocketReporter) handleTcpPing(data interface{}) (TcpPingResponse, er
 	return response, nil
 }
 
+// handleServiceMonitorCheck executes a service monitor check on this node.
+// It always returns a result (command execution is considered successful even if the check fails).
+func (w *WebSocketReporter) handleServiceMonitorCheck(data interface{}) (ServiceMonitorCheckResult, error) {
+	jsonData, err := json.Marshal(data)
+	if err != nil {
+		return ServiceMonitorCheckResult{}, fmt.Errorf("序列化检查数据失败: %v", err)
+	}
+
+	var req ServiceMonitorCheckRequest
+	if err := json.Unmarshal(jsonData, &req); err != nil {
+		return ServiceMonitorCheckResult{}, fmt.Errorf("解析检查请求失败: %v", err)
+	}
+
+	checkType := strings.ToLower(strings.TrimSpace(req.Type))
+	target := strings.TrimSpace(req.Target)
+	res := ServiceMonitorCheckResult{MonitorID: req.MonitorID}
+
+	if checkType != "tcp" && checkType != "icmp" {
+		res.Success = false
+		res.ErrorMessage = "不支持的检查类型"
+		return res, nil
+	}
+	if target == "" {
+		res.Success = false
+		res.ErrorMessage = "检查目标为空"
+		return res, nil
+	}
+
+	timeoutSec := req.TimeoutSec
+	if timeoutSec <= 0 {
+		timeoutSec = 5
+	}
+	timeout := time.Duration(timeoutSec) * time.Second
+
+	start := time.Now()
+
+	switch checkType {
+	case "tcp":
+		// Validate and normalize host:port.
+		_, _, splitErr := net.SplitHostPort(target)
+		if splitErr != nil {
+			res.Success = false
+			res.ErrorMessage = "无效的TCP目标"
+			res.LatencyMs = float64(time.Since(start).Milliseconds())
+			return res, nil
+		}
+		conn, dialErr := net.DialTimeout("tcp", target, timeout)
+		res.LatencyMs = float64(time.Since(start).Milliseconds())
+		if dialErr != nil {
+			res.Success = false
+			res.ErrorMessage = dialErr.Error()
+			return res, nil
+		}
+		_ = conn.Close()
+		res.Success = true
+		return res, nil
+
+	case "icmp":
+		rtt, pingErr := icmpPing(target, timeout)
+		res.LatencyMs = float64(rtt.Milliseconds())
+		if pingErr != nil {
+			res.Success = false
+			res.ErrorMessage = pingErr.Error()
+			return res, nil
+		}
+		res.Success = true
+		return res, nil
+	}
+
+	res.Success = false
+	res.ErrorMessage = "未知错误"
+	res.LatencyMs = float64(time.Since(start).Milliseconds())
+	return res, nil
+}
+
+func icmpPing(target string, timeout time.Duration) (time.Duration, error) {
+	start := time.Now()
+
+	target = strings.TrimSpace(target)
+	if target == "" {
+		return time.Since(start), fmt.Errorf("无效的ICMP目标")
+	}
+	// Avoid accepting URL-like targets.
+	if strings.Contains(target, "://") {
+		return time.Since(start), fmt.Errorf("无效的ICMP目标")
+	}
+	if strings.HasPrefix(target, "[") && strings.HasSuffix(target, "]") {
+		target = strings.TrimSuffix(strings.TrimPrefix(target, "["), "]")
+	}
+
+	ipAddr, err := net.ResolveIPAddr("ip", target)
+	if err != nil || ipAddr == nil || ipAddr.IP == nil {
+		if err == nil {
+			err = fmt.Errorf("unknown address")
+		}
+		return time.Since(start), fmt.Errorf("解析目标失败: %v", err)
+	}
+
+	isV4 := ipAddr.IP.To4() != nil
+	listenAddr := "0.0.0.0"
+	proto := 1
+	var echoType icmp.Type = ipv4.ICMPTypeEcho
+	var echoReplyType icmp.Type = ipv4.ICMPTypeEchoReply
+	networks := []string{"udp4", "ip4:icmp"}
+	if !isV4 {
+		listenAddr = "::"
+		proto = 58
+		echoType = ipv6.ICMPTypeEchoRequest
+		echoReplyType = ipv6.ICMPTypeEchoReply
+		networks = []string{"udp6", "ip6:ipv6-icmp"}
+	}
+
+	var conn *icmp.PacketConn
+	selectedNetwork := ""
+	var lastErr error
+	for _, nw := range networks {
+		c, err := icmp.ListenPacket(nw, listenAddr)
+		if err == nil {
+			conn = c
+			selectedNetwork = nw
+			break
+		}
+		lastErr = err
+	}
+	if conn == nil {
+		if lastErr != nil {
+			return time.Since(start), fmt.Errorf("创建ICMP连接失败: %v", lastErr)
+		}
+		return time.Since(start), fmt.Errorf("创建ICMP连接失败")
+	}
+	defer conn.Close()
+
+	id := os.Getpid() & 0xffff
+	seq := 1
+
+	wm := icmp.Message{
+		Type: echoType,
+		Code: 0,
+		Body: &icmp.Echo{
+			ID:   id,
+			Seq:  seq,
+			Data: []byte("FLVX-PING"),
+		},
+	}
+	wb, err := wm.Marshal(nil)
+	if err != nil {
+		return time.Since(start), err
+	}
+
+	_ = conn.SetDeadline(time.Now().Add(timeout))
+
+	var dst net.Addr
+	if strings.HasPrefix(selectedNetwork, "udp") {
+		dst = &net.UDPAddr{IP: ipAddr.IP, Zone: ipAddr.Zone}
+	} else {
+		dst = &net.IPAddr{IP: ipAddr.IP, Zone: ipAddr.Zone}
+	}
+
+	if _, err := conn.WriteTo(wb, dst); err != nil {
+		return time.Since(start), err
+	}
+
+	addrIP := func(a net.Addr) net.IP {
+		switch v := a.(type) {
+		case *net.IPAddr:
+			return v.IP
+		case *net.UDPAddr:
+			return v.IP
+		default:
+			return nil
+		}
+	}
+
+	rb := make([]byte, 1500)
+	for {
+		n, peer, err := conn.ReadFrom(rb)
+		if err != nil {
+			return time.Since(start), err
+		}
+		if p := addrIP(peer); p != nil && !p.Equal(ipAddr.IP) {
+			continue
+		}
+		rm, err := icmp.ParseMessage(proto, rb[:n])
+		if err != nil {
+			continue
+		}
+		if rm.Type != echoReplyType {
+			continue
+		}
+		echo, ok := rm.Body.(*icmp.Echo)
+		if !ok {
+			continue
+		}
+		if echo.Seq != seq {
+			continue
+		}
+		// For non-privileged endpoints, the kernel may choose the ID.
+		if !strings.HasPrefix(selectedNetwork, "udp") && echo.ID != id {
+			continue
+		}
+		return time.Since(start), nil
+	}
+}
+
 // tcpPingHost 执行TCP连接测试，返回平均连接时间和失败率
 func tcpPingHost(ip string, port int, count int, timeoutMs int) (float64, float64, error) {
 	var totalTime float64

go-gost/x/socket/websocket_reporter_test.go

@@ -0,0 +1,127 @@
+package socket
+
+import (
+	"errors"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/gorilla/websocket"
+)
+
+func TestBuildWebSocketCandidatesSecureFirst(t *testing.T) {
+	candidates := buildWebSocketCandidates("panel.example.com:443", "abc", "2.0.2", 1, 0, 1, "")
+
+	if len(candidates) != 2 {
+		t.Fatalf("expected 2 candidates, got %d", len(candidates))
+	}
+	if !strings.HasPrefix(candidates[0], "wss://") {
+		t.Fatalf("expected first candidate to start with wss://, got %s", candidates[0])
+	}
+	if !strings.HasPrefix(candidates[1], "ws://") {
+		t.Fatalf("expected second candidate to start with ws://, got %s", candidates[1])
+	}
+}
+
+func TestBuildWebSocketCandidatesUsesPreferredScheme(t *testing.T) {
+	candidates := buildWebSocketCandidates("panel.example.com:443", "abc", "2.0.2", 1, 0, 1, "ws")
+
+	if len(candidates) != 2 {
+		t.Fatalf("expected 2 candidates, got %d", len(candidates))
+	}
+	if !strings.HasPrefix(candidates[0], "ws://") {
+		t.Fatalf("expected preferred ws:// candidate first, got %s", candidates[0])
+	}
+	if !strings.HasPrefix(candidates[1], "wss://") {
+		t.Fatalf("expected fallback wss:// candidate second, got %s", candidates[1])
+	}
+}
+
+func TestBuildWebSocketCandidatesNormalizesSchemePrefixedAddr(t *testing.T) {
+	candidates := buildWebSocketCandidates("https://panel.example.com:443/path?q=1", "abc", "2.0.2", 0, 0, 0, "")
+
+	if len(candidates) != 2 {
+		t.Fatalf("expected 2 candidates, got %d", len(candidates))
+	}
+	if !strings.HasPrefix(candidates[0], "wss://panel.example.com:443/") {
+		t.Fatalf("expected normalized wss candidate, got %s", candidates[0])
+	}
+	if !strings.HasPrefix(candidates[1], "ws://panel.example.com:443/") {
+		t.Fatalf("expected normalized ws fallback candidate, got %s", candidates[1])
+	}
+}
+
+func TestDialWebSocketWithFallbackTriesWSAfterWSSFailure(t *testing.T) {
+	orig := wsDial
+	defer func() { wsDial = orig }()
+
+	var attempts []string
+	wsDial = func(_ *websocket.Dialer, rawURL string) (*websocket.Conn, *http.Response, error) {
+		attempts = append(attempts, rawURL)
+		if strings.HasPrefix(rawURL, "wss://") {
+			return nil, nil, errors.New("tls failed")
+		}
+		return &websocket.Conn{}, nil, nil
+	}
+
+	_, usedURL, err := dialWebSocketWithFallback(
+		&websocket.Dialer{},
+		[]string{
+			"wss://panel.example.com/system-info?type=1&secret=abc",
+			"ws://panel.example.com/system-info?type=1&secret=abc",
+		},
+	)
+	if err != nil {
+		t.Fatalf("expected fallback success, got err=%v", err)
+	}
+	if !strings.HasPrefix(usedURL, "ws://") {
+		t.Fatalf("expected fallback ws:// url, got %s", usedURL)
+	}
+	if len(attempts) != 2 {
+		t.Fatalf("expected 2 attempts, got %d", len(attempts))
+	}
+	if !strings.HasPrefix(attempts[0], "wss://") || !strings.HasPrefix(attempts[1], "ws://") {
+		t.Fatalf("unexpected attempt order: %#v", attempts)
+	}
+}
+
+func TestDetectWebSocketScheme(t *testing.T) {
+	if detectWebSocketScheme("wss://panel.example.com/system-info") != "wss" {
+		t.Fatalf("expected wss detection")
+	}
+	if detectWebSocketScheme("ws://panel.example.com/system-info") != "ws" {
+		t.Fatalf("expected ws detection")
+	}
+	if detectWebSocketScheme("http://panel.example.com/system-info") != "" {
+		t.Fatalf("expected empty detection for non-websocket scheme")
+	}
+}
+
+func TestSanitizeWebSocketURL(t *testing.T) {
+	raw := "wss://panel.example.com/system-info?type=1&secret=abc&version=2.0.2"
+	sanitized := sanitizeWebSocketURL(raw)
+
+	if strings.Contains(sanitized, "secret=abc") {
+		t.Fatalf("expected secret to be masked, got %s", sanitized)
+	}
+	if !strings.Contains(sanitized, "secret=%2A%2A%2A") {
+		t.Fatalf("expected masked secret in url, got %s", sanitized)
+	}
+}
+
+func TestFormatWebSocketDialErrorIncludesHTTPStatus(t *testing.T) {
+	err := errors.New("websocket: bad handshake")
+	resp := &http.Response{
+		Status: "403 Forbidden",
+		Body:   io.NopCloser(strings.NewReader("forbidden")),
+	}
+
+	msg := formatWebSocketDialError(err, resp)
+	if !strings.Contains(msg, "HTTP 403 Forbidden") {
+		t.Fatalf("expected status in message, got %s", msg)
+	}
+	if !strings.Contains(msg, "forbidden") {
+		t.Fatalf("expected response body in message, got %s", msg)
+	}
+}

openspec/changes/document-existing-specs/.openspec.yaml

@@ -1,2 +0,0 @@
-schema: spec-driven
-created: 2026-02-17

openspec/changes/document-existing-specs/design.md

@@ -1,29 +0,0 @@
-## Context
-
-FLVX is a distributed system consisting of a central management panel (Backend + Frontend) and multiple forwarding agents (Nodes). The backend manages configuration, users, and billing, while agents handle the actual traffic forwarding using a modified GOST v3 stack. Communication between the panel and agents is secured and synchronized.
-
-## Goals / Non-Goals
-
-**Goals:**
-- Document the high-level architecture of the system.
-- Describe the data model for users, tunnels, and nodes.
-- Explain the communication protocol between Panel and Agent.
-- Detail the authentication and authorization mechanisms.
-
-**Non-Goals:**
-- Refactoring the existing architecture.
-- Detailed code-level documentation of every function.
-- Changing the database schema.
-
-## Decisions
-
-- **Architecture**: The system follows a client-server model where the Panel acts as the server and Agents act as clients that pull configuration and push status.
-- **Data Model**: Core entities are Users, Nodes (Agents), Tunnels (Groups of rules), and Forwarding Rules.
-- **Communication**: Agents use a heartbeat mechanism to report status and fetch configuration updates. The protocol uses AES encryption with a pre-shared key (Node Secret).
-- **Authentication**: JWT for Frontend-Backend communication; API Key (Node Secret) for Agent-Backend communication.
-
-## Risks / Trade-offs
-
-- **Security**: The security of the agent communication relies heavily on the secrecy of the Node Secret.
-- **Scalability**: Centralized management might become a bottleneck with a very large number of agents.
-- **Complexity**: Synchronizing state across distributed agents introduces complexity in handling failures and inconsistencies.

openspec/changes/document-existing-specs/proposal.md

@@ -1,28 +0,0 @@
-## Why
-
-The current system lacks formal specification documents describing its capabilities. This makes it difficult for new developers to understand the intended behavior and for existing developers to ensure consistency when adding new features. Documenting the existing functionality will serve as a baseline for future changes and help in identifying gaps or inconsistencies.
-
-## What Changes
-
-- Create formal specification documents for core system capabilities.
-- Document user management features (roles, limits).
-- Document tunnel and forwarding management (protocols, rules).
-- Document agent interactions and management.
-- Document system-level configurations.
-
-## Capabilities
-
-### New Capabilities
-- `user-management`: Authentication, user roles, and resource limits.
-- `tunnel-management`: Creation and management of traffic tunnels (TCP/UDP).
-- `forwarding-rules`: Configuration of port forwarding and tunnel forwarding rules, including rate limiting.
-- `agent-management`: Management of forwarding agents, including installation and configuration synchronization.
-- `system-config`: Global system settings and configurations.
-
-### Modified Capabilities
-<!-- None, as this is a documentation effort for existing features. -->
-
-## Impact
-
-- **Documentation**: New spec files in `openspec/specs/`.
-- **No Code Changes**: This change is purely documentation-focused.

openspec/changes/document-existing-specs/specs/agent-management/spec.md

@@ -1,29 +0,0 @@
-## ADDED Requirements
-
-### Requirement: Agent Registration
-The system SHALL require new agents (Nodes) to register using a unique node key/secret.
-
-#### Scenario: Node Connection
-- **WHEN** a new agent starts up with a valid configuration
-- **THEN** it connects to the backend and is registered as active.
-
-### Requirement: Heartbeat Monitoring
-The system SHALL monitor the status of all registered agents using periodic heartbeats.
-
-#### Scenario: Agent Status
-- **WHEN** an agent sends periodic heartbeats
-- **THEN** the system updates its last-seen timestamp and marks it as online.
-
-### Requirement: Configuration Sync
-The system MUST synchronize configuration changes (tunnels, rules) to agents securely and reliably.
-
-#### Scenario: Push Config
-- **WHEN** a configuration change is made in the panel
-- **THEN** the agent receives the updated configuration via the next heartbeat or push mechanism.
-
-### Requirement: Version Management
-The system SHOULD track the version of the agent software running on each node.
-
-#### Scenario: Version Reporting
-- **WHEN** an agent connects
-- **THEN** it reports its version number to the backend for tracking.

openspec/changes/document-existing-specs/specs/forwarding-rules/spec.md

@@ -1,22 +0,0 @@
-## ADDED Requirements
-
-### Requirement: Port Forwarding Rules
-The system SHALL support configuring port forwarding rules, defining the listening port on the node and the destination IP/port.
-
-#### Scenario: Rule Configuration
-- **WHEN** an admin creates a port forwarding rule
-- **THEN** the rule is stored and synchronized to the assigned node.
-
-### Requirement: Rate Limiting
-The system SHALL support configuring bandwidth rate limits for tunnels and users.
-
-#### Scenario: Bandwidth Restriction
-- **WHEN** a rate limit is applied to a user
-- **THEN** their total bandwidth usage does not exceed the specified limit across all their tunnels.
-
-### Requirement: Traffic Accounting
-The system MUST track incoming and outgoing traffic volume for each tunnel and user for billing and quota enforcement.
-
-#### Scenario: Traffic Calculation
-- **WHEN** traffic flows through a tunnel
-- **THEN** the system increments the user's traffic usage counter accurately.

openspec/changes/document-existing-specs/specs/system-config/spec.md

@@ -1,22 +0,0 @@
-## ADDED Requirements
-
-### Requirement: Site Settings
-The system SHALL allow customization of the site title, logo, and other branding elements.
-
-#### Scenario: Update Branding
-- **WHEN** an administrator changes the site logo
-- **THEN** the new logo is displayed across the interface.
-
-### Requirement: Notification Settings
-The system SHALL support configuring notifications for user registration, traffic limits, and other events.
-
-#### Scenario: User Limit Alert
-- **WHEN** a user approaches their traffic quota
-- **THEN** a notification is sent to the user/admin.
-
-### Requirement: Backup & Restore
-The system SHOULD provide a mechanism to backup and restore database configurations.
-
-#### Scenario: Restore Database
-- **WHEN** initiating a restore operation
-- **THEN** the system accepts a valid backup file and overwrites the current database state.

openspec/changes/document-existing-specs/specs/tunnel-management/spec.md

@@ -1,22 +0,0 @@
-## ADDED Requirements
-
-### Requirement: Tunnel Creation
-The system SHALL allow administrators to create tunnels, specifying protocols (TCP, UDP), listening ports, and destination endpoints.
-
-#### Scenario: Create TCP Tunnel
-- **WHEN** an admin creates a new TCP tunnel configuration
-- **THEN** the backend stores the tunnel definition and assigns it to a node.
-
-### Requirement: Tunnel Forwarding Configuration
-The system SHALL support both standard port forwarding (listening on a port and forwarding to a destination) and tunnel forwarding modes.
-
-#### Scenario: Configure Port Forwarding
-- **WHEN** configuring a tunnel for port forwarding
-- **THEN** traffic arriving at the specified port is forwarded to the destination IP:port.
-
-### Requirement: Tunnel Assignment
-The system SHALL allow tunnels to be assigned to specific users, tracking their usage against the user's quota.
-
-#### Scenario: User Tunnel Usage
-- **WHEN** a user is assigned a tunnel
-- **THEN** traffic passing through that tunnel is accounted for under the user's usage.

openspec/changes/document-existing-specs/specs/user-management/spec.md

@@ -1,29 +0,0 @@
-## ADDED Requirements
-
-### Requirement: User Registration
-The system SHALL allow new users to register an account with a username and password.
-
-#### Scenario: Successful Registration
-- **WHEN** a user submits valid registration details
-- **THEN** a new user account is created and the user can log in.
-
-### Requirement: User Authentication
-The system MUST authenticate users using JWT tokens. The `Authorization` header MUST contain the raw token without a `Bearer` prefix.
-
-#### Scenario: Valid Login
-- **WHEN** a user provides correct credentials
-- **THEN** the system returns a valid JWT token.
-
-### Requirement: Role Management
-The system SHALL support different user roles, specifically Administrator and Regular User, with distinct permissions.
-
-#### Scenario: Admin Access
-- **WHEN** an administrator logs in
-- **THEN** they have access to system-wide settings and all user management functions.
-
-### Requirement: Resource Quotas
-The system SHALL allow administrators to set traffic limits and connection limits for individual users.
-
-#### Scenario: Traffic Limit Enforcement
-- **WHEN** a user exceeds their traffic quota
-- **THEN** the system prevents further traffic forwarding for that user.

openspec/changes/document-existing-specs/tasks.md

@@ -1,30 +0,0 @@
-## 1. User Management Verification
-
-- [ ] 1.1 Verify User Registration logic in backend
-- [ ] 1.2 Verify JWT Authentication implementation
-- [ ] 1.3 Verify Role Management checks
-- [ ] 1.4 Verify Quota Enforcement logic
-
-## 2. Tunnel Management Verification
-
-- [ ] 2.1 Verify Tunnel Creation API
-- [ ] 2.2 Verify Forwarding Configuration parsing
-- [ ] 2.3 Verify Tunnel Assignment logic
-
-## 3. Forwarding Rules Verification
-
-- [ ] 3.1 Verify Port Forwarding rule processing
-- [ ] 3.2 Verify Rate Limiting implementation (token bucket/leaky bucket?)
-- [ ] 3.3 Verify Traffic Accounting mechanisms
-
-## 4. Agent Management Verification
-
-- [ ] 4.1 Verify Agent Registration handshake
-- [ ] 4.2 Verify Heartbeat processing
-- [ ] 4.3 Verify Config Sync protocol
-
-## 5. System Config Verification
-
-- [ ] 5.1 Verify Site Settings API
-- [ ] 5.2 Verify Notification triggers
-- [ ] 5.3 Verify Backup/Restore functionality

openspec/config.yaml

@@ -1,20 +0,0 @@
-schema: spec-driven
-
-# Project context (optional)
-# This is shown to AI when creating artifacts.
-# Add your tech stack, conventions, style guides, domain knowledge, etc.
-# Example:
-#   context: |
-#     Tech stack: TypeScript, React, Node.js
-#     We use conventional commits
-#     Domain: e-commerce platform
-
-# Per-artifact rules (optional)
-# Add custom rules for specific artifacts.
-# Example:
-#   rules:
-#     proposal:
-#       - Keep proposals under 500 words
-#       - Always include a "Non-goals" section
-#     tasks:
-#       - Break tasks into chunks of max 2 hours

openspec/project.md

@@ -1,52 +0,0 @@
-# Project Overview
-
-**Name**: FLVX (Flux Panel)
-**Description**: Traffic forwarding management system built on a forked GOST v3 stack. It provides a web-based panel for managing traffic tunnels, users, and forwarding rules.
-**Repository**: Monorepo containing Admin API, Web UI, and Forwarding Agent.
-
-## Tech Stack
-
-### Backend (`go-backend/`)
-- **Language**: Go
-- **Database**: SQLite (default), PostgreSQL (supported)
-- **Framework**: Standard library `net/http` (no heavy framework)
-- **ORM**: None (Raw SQL via `database/sql`)
-
-### Frontend (`vite-frontend/`)
-- **Framework**: React
-- **Build Tool**: Vite (using `rolldown-vite` experimental bundler)
-- **UI Library**: HeroUI
-- **Styling**: Tailwind CSS
-- **Mode**: Hybrid (Desktop + Mobile WebView support)
-
-### Agent (`go-gost/`)
-- **Language**: Go
-- **Base**: Fork of `gost` v3
-- **Extensions**: Custom extensions in `go-gost/x/`
-
-### Infrastructure
-- **Containerization**: Docker, Docker Compose (v4/v6)
-- **CI/CD**: GitHub Actions
-- **Installers**: Shell scripts (`panel_install.sh`, `install.sh`)
-
-## Architecture
-
-- **Panel**: Central management server (Go Backend + React Frontend).
-- **Agent**: Forwarding node running on remote servers.
-- **Communication**:
-    - Frontend -> Backend: REST API (JWT Auth, raw token in header).
-    - Agent -> Backend: AES-encrypted heartbeat/config sync.
-
-## Conventions
-
-- **Authentication**: `Authorization` header expects raw JWT token (do NOT add `Bearer ` prefix).
-- **API Response**: Standard envelope `{code, msg, data, ts}` (code 0 = success).
-- **Database**: Backend uses raw SQL queries. Do not introduce an ORM.
-- **File Structure**: Flat monorepo with language-prefixed directories (`go-backend`, `go-gost`).
-- **Protobuf**: Do not edit generated `.pb.go` files manually.
-
-## Development
-
-- **Backend Build**: `cd go-backend && make build`
-- **Frontend Dev**: `cd vite-frontend && npm run dev`
-- **Agent Run**: `cd go-gost && go run .`

plans/001-fix-211-connectip-full-chain.md

@@ -0,0 +1,15 @@
+# 001 Fix 211 ConnectIP Full Chain
+
+## Checklist
+
+- [x] Analyze connectIp/inIp full chain across diagnosis/runtime/redeploy paths.
+- [x] Fix diagnosis target resolution to honor selected `connectIp` for chain hops.
+- [x] Fix tunnel state reconstruction to preserve `connectIp` on chain/out nodes.
+- [x] Add contract regression tests for normal + stream diagnosis target IP behavior.
+- [x] Add handler regression test for redeploy state reconstruction preserving `connectIp`.
+- [x] Run backend handler and contract test suites.
+
+## Notes
+
+- Diagnosis now uses `chain_tunnel.connect_ip` for both stream start preview and runtime probing.
+- Redeploy/batch-redeploy no longer drops `connectIp` during `reconstructTunnelState`.

plans/002-ny-import-tunnel-selection-compat.md

@@ -0,0 +1,7 @@
+- [x] Review current forward import flow and confirm ny import uses tunnel selection
+- [x] Define ny compatibility update with tunnel-first behavior and auto port assignment fallback
+- [x] Update ny parser to accept alias fields and optional `listen_port`
+- [x] Keep import execution bound to selected tunnel and remove entry-selection dependency from ux copy
+- [x] Update ny import help text to document optional port auto assignment
+- [x] Add parser tests for alias-field compatibility and missing-port auto assignment
+- [x] Validate updated import parser tests locally

plans/003-forward-edit-bind-ip-preserve.md

@@ -0,0 +1,11 @@
+# 003 Forward Edit Bind IP Preserve
+
+## Checklist
+
+- [x] Confirm forward edit flow and identify why untouched listen IP gets overwritten.
+- [x] Update frontend forward edit submit logic to only send `inIp` when user explicitly changes listen IP.
+- [x] On tunnel switch in edit form, reset listen IP to default unless user reselects.
+- [x] Update backend forward update logic to preserve existing `forward_port.in_ip` when request omits `inIp` and tunnel is unchanged.
+- [x] Keep backend behavior explicit: if `inIp` is sent (including empty), apply requested value; if tunnel changed with no `inIp`, use default bind.
+- [x] Add regression tests for preserved bind-IP reconstruction helper behavior.
+- [x] Run focused frontend/backend checks for touched files.

plans/004-forward-explicit-bind-self-occupy-release.md

@@ -0,0 +1,11 @@
+# 004 Forward Explicit Bind Self-Occupy Release
+
+## Checklist
+
+- [x] Confirm current forward edit/save failure path and lock strategy: explicit bind always stays explicit.
+- [x] Add repository query to detect whether a node+port is occupied by other forwards (excluding current forward).
+- [x] Enhance forward service sync to treat address-in-use as a recoverable case when only self occupies the port.
+- [x] On self-occupy conflict, proactively delete current forward services on target node and retry AddService.
+- [x] Keep hard failure when the same node+port is occupied by other forwards.
+- [x] Add focused unit tests for new error classification helpers.
+- [x] Run focused backend tests for touched handler/repo packages.

plans/005-forward-invalid-bindip-fallback-default.md

@@ -0,0 +1,11 @@
+# 005 Forward Invalid BindIP Fallback Default
+
+## Checklist
+
+- [x] Split forward service bind failures into address-in-use and cannot-assign classes.
+- [x] Keep self-occupy release/rebind only for address-in-use conflicts.
+- [x] Add fallback path for cannot-assign: switch to default listener bind and retry service creation.
+- [x] Persist fallback result to DB by clearing `forward_port.in_ip` for affected node+port.
+- [x] Return non-blocking warning in forward update response when fallback occurs.
+- [x] Show warning toast in forward edit UI while still treating operation as success.
+- [x] Run focused backend tests for touched handler/repo packages.

plans/006-forward-save-missing-speed-limit-auto-clear.md

@@ -0,0 +1,8 @@
+# 006 Forward Save Missing Speed Limit Auto Clear
+
+## Checklist
+
+- [x] Locate forward create/update speed limit validation path that blocks save when speed rule is deleted.
+- [x] Change forward save behavior to auto-clear missing `speedId` instead of returning "限速规则不存在".
+- [x] Add contract test coverage for editing a forward after its referenced speed limit is deleted.
+- [x] Run focused contract tests for forward save behavior.

plans/007-user-tunnel-save-missing-speed-limit-auto-clear.md

@@ -0,0 +1,8 @@
+# 007 User Tunnel Save Missing Speed Limit Auto Clear
+
+## Checklist
+
+- [x] Locate user tunnel speed limit validation paths for assign/update flows.
+- [x] Change user tunnel save behavior to auto-clear missing `speedId` instead of failing.
+- [x] Add contract test coverage for user tunnel save when referenced speed limit is deleted.
+- [x] Run focused contract tests for user tunnel save behavior.

plans/008-frontend-missing-speed-limit-consistency.md

@@ -0,0 +1,8 @@
+# 008 Frontend Missing Speed Limit Consistency
+
+## Checklist
+
+- [x] Review forward and user tunnel submit flows for missing speed limit behavior.
+- [x] Make frontend normalize deleted `speedId` to `null` before submit in both pages.
+- [x] Add consistent non-blocking warning toast when deleted speed rule is auto-cleared.
+- [x] Verify touched frontend files pass lint checks.

plans/009-restrict-user-forward-permissions.md

@@ -0,0 +1,112 @@
+# 009: 普通用户转发权限限制
+
+## 背景
+
+当前系统允许普通用户在创建和编辑转发时设置：
+1. **限速规则** (`speedId`) - 应仅限管理员设置
+2. **自定义入口端口** (`inPort`) - 应仅限管理员设置
+
+普通用户应只能使用系统自动分配的端口和默认不限速设置。
+
+## 实施范围
+
+| 操作 | 普通用户 | 管理员 |
+|------|----------|--------|
+| 创建转发 - 设置限速 | 禁止 | 允许 |
+| 创建转发 - 自定义端口 | 禁止 | 允许 |
+| 编辑转发 - 修改限速 | 禁止 | 允许 |
+| 编辑转发 - 修改端口 | 禁止 | 允许 |
+
+## 修改位置
+
+### 后端 (Go)
+
+**文件**: `go-backend/internal/http/handler/mutations.go`
+
+#### 1. `forwardCreate` handler (行 1147-1157)
+
+在处理 speedId 和 inPort 之前添加权限检查：
+
+```go
+if roleID != 0 {
+    if _, ok := req["speedId"]; ok {
+        response.WriteJSON(w, response.Err(-1, "普通用户无法设置限速规则"))
+        return
+    }
+    if _, ok := req["inPort"]; ok {
+        response.WriteJSON(w, response.Err(-1, "普通用户无法设置自定义端口"))
+        return
+    }
+}
+```
+
+#### 2. `forwardUpdate` handler (行 1264-1274)
+
+在处理 speedId 和 inPort 之前添加权限检查：
+
+```go
+if actorRole != 0 {
+    if _, ok := req["speedId"]; ok {
+        response.WriteJSON(w, response.Err(-1, "普通用户无法修改限速规则"))
+        return
+    }
+    if _, ok := req["inPort"]; ok {
+        response.WriteJSON(w, response.Err(-1, "普通用户无法修改自定义端口"))
+        return
+    }
+}
+```
+
+### 前端 (React/TypeScript)
+
+**文件**: `vite-frontend/src/pages/forward.tsx`
+
+已有变量 `isAdmin` (行 610: `const isAdmin = tokenRoleId === 0;`)
+
+#### 1. 隐藏限速规则选择器 (行 4252-4282)
+
+用条件渲染包裹：
+
+```tsx
+{isAdmin && (
+  <Select
+    label="限速规则"
+    // ... 现有属性
+  >
+    {/* ... */}
+  </Select>
+)}
+```
+
+#### 2. 隐藏入口端口输入框 (行 4311-4328)
+
+用条件渲染包裹：
+
+```tsx
+{isAdmin && (
+  <Input
+    description="指定入口端口，留空则从节点可用端口中自动分配"
+    // ... 现有属性
+  />
+)}
+```
+
+## 任务清单
+
+- [x] 后端: `forwardCreate` 添加权限检查
+- [x] 后端: `forwardUpdate` 添加权限检查
+- [x] 前端: 隐藏限速规则选择器 (仅管理员可见)
+- [x] 前端: 隐藏入口端口输入框 (仅管理员可见)
+- [x] 后端: 添加契约测试验证权限限制
+- [x] 运行测试验证
+
+## 测试验证
+
+1. ✅ 契约测试已添加 `TestNonAdminCannotSetSpeedIdOrPort`
+2. ✅ 所有测试用例通过：
+   - 普通用户创建转发时设置 speedId 被拒绝
+   - 普通用户创建转发时设置 inPort 被拒绝
+   - 普通用户创建转发时不设置 speedId/inPort 成功
+   - 普通用户更新转发时设置 speedId 被拒绝
+   - 普通用户更新转发时设置 inPort 被拒绝
+   - 普通用户更新转发时不设置 speedId/inPort 成功

plans/010-multi-entrance-exit-ip-restrictions.md

@@ -0,0 +1,97 @@
+# 010 多入口/多出口/多跳自定义 IP 限制与回归
+
+## 目标
+- 修复多入口转发列表只显示一个入口地址的问题。
+- 在 UI 和后端同时限制以下场景的自定义 IP：
+  - 多入口转发禁止自定义监听 IP（`inIp`）。
+  - 多出口隧道禁止自定义连接 IP（`connectIp`）。
+  - 转发链单跳多节点禁止自定义连接 IP（`connectIp`）。
+
+## 范围说明（基于当前实际）
+- 不改“隧道页面入口 IP 文本域”的行为（按确认：该字段是展示用途，不作为本次约束点）。
+- 本次仅覆盖已落地代码与可复现验证项。
+
+## Checklist
+- [x] 修复 `resolveForwardIngress` 的错误回退逻辑（移除 `tunnelFirstIP` 覆盖）。
+- [x] 前端转发页：多入口隧道禁用“监听IP”选择并显示提示。
+- [x] 前端隧道页：多出口禁用“连接IP”选择并显示提示。
+- [x] 前端隧道页：转发链单跳多节点禁用“连接IP”选择并显示提示。
+- [x] 后端隧道创建/编辑增加 `connectIp` 约束校验（多出口、多节点跳）。
+- [x] 后端转发创建/编辑增加 `inIp` 约束校验（多入口）。
+- [x] 后端构建验证通过。
+- [x] 前端构建验证通过。
+- [x] 相关定向合约测试通过（forward/tunnel）。
+- [x] 全量 contract 测试执行并记录结果（存在与本次改动无关的既有失败）。
+- [ ] 数据迁移脚本（可选）：将历史多入口/多出口/多节点的自定义 IP 清理为默认值。
+
+## 实施记录
+
+### 代码变更
+- `go-backend/internal/store/repo/repository.go`
+  - 在 `resolveForwardIngress` 中移除 `tunnelFirstIP` 逻辑。
+  - `in_ip` 为空时回退到每个入口节点自身 `server_ip`，避免多入口被合并为单入口展示。
+
+- `vite-frontend/src/pages/forward.tsx`
+  - 新增 `isCurrentTunnelMultiEntrance` 判断。
+  - 多入口时禁用“监听IP”Select，并展示“多入口隧道使用节点默认IP”。
+
+- `vite-frontend/src/pages/tunnel.tsx`
+  - 转发链区域新增 `isMultiNodeGroup`，单跳多节点时禁用连接 IP 选择。
+  - 出口区域新增 `isMultiExit`，多出口时禁用连接 IP 选择。
+
+- `go-backend/internal/http/handler/mutations.go`
+  - `tunnelCreate` / `tunnelUpdate` 调用 `validateTunnelConnectIPConstraints(req)`。
+  - 新增 `validateTunnelConnectIPConstraints`：
+    - 多出口+自定义 `connectIp` 拒绝。
+    - 转发链单跳多节点+自定义 `connectIp` 拒绝。
+  - `forwardCreate` / `forwardUpdate`：多入口+自定义 `inIp` 拒绝。
+
+## 验证记录
+
+### 1) 后端构建
+```bash
+cd go-backend
+go build ./internal/http/handler/...
+```
+结果：通过。
+
+### 2) 前端构建
+```bash
+cd vite-frontend
+npm run build
+```
+结果：通过。
+
+### 3) 后端包测试
+```bash
+cd go-backend
+go test ./internal/store/repo/...
+go test ./internal/http/handler/...
+```
+结果：通过。
+
+### 4) 定向合约测试（forward/tunnel）
+```bash
+cd go-backend
+go test ./tests/contract/... -run "TestForward.*|TestTunnel.*"
+```
+结果：通过。
+
+### 5) 全量合约测试（记录）
+```bash
+cd go-backend
+go test ./tests/contract/...
+```
+结果：所有测试通过。
+
+### 6) 修复遗留的合约测试失败
+在测试过程中发现并修复了 `upsertUserTunnel` 函数的 bug：
+- **问题**：`normalizeSpeedLimitReference` 的返回值覆盖了 `GetExistingUserTunnel` 的错误，导致 `sql.ErrNoRows` 判断失效。
+- **修复**：将 `GetExistingUserTunnel` 的错误保存到 `lookupErr` 变量，避免被后续调用覆盖。
+- **影响范围**：仅影响 `userTunnelBatchAssign` 路径，不影响其他功能。
+- **验证**：两个失败的测试（`TestUserTunnelReassignmentKeepsStableID`、`TestBatchAssignInsertRollbackWhenLimiterDispatchFailsContract`）现在都通过。
+
+## 完成状态
+- 本计划按当前实际范围已完成。
+- 所有合约测试通过（14/14）。
+- 任务 10（数据迁移）已纳入计划，当前为可选项，默认不执行。

plans/011-forward-service-legacy-compat-and-agent-rollout.md

@@ -0,0 +1,28 @@
+# 011 转发服务名升级兼容与节点滚动升级
+
+## 目标
+- 修复旧版本升级后编辑转发/隧道出现 `service not found`（service不存在）的问题。
+- 在后端加入兼容自愈逻辑，允许旧命名与新命名共存过渡。
+- 给出低风险节点升级顺序，避免一次性全量切换带来的中断。
+
+## Checklist
+- [x] 定位回归路径：服务名从 `forward_user_0` 迁移到真实 `user_tunnel_id` 后，与旧运行态不一致导致控制失败。
+- [x] 在 `UpdateService` 的兼容路径加入旧服务清理后重建逻辑。
+- [x] 在 `Pause/Resume` 控制路径加入首次 not found 后自愈重试逻辑。
+- [x] 增加回归测试覆盖兼容行为。
+- [x] 执行 `go-backend` 相关测试并记录结果。
+- [x] 输出运维侧“后端先行 + agent 灰度升级 + 批量重部署”操作步骤。
+
+## 变更说明（实施中）
+- 后端控制面将在检测到升级期的服务名不一致时进行自动自愈，降低人工干预和手工重建成本。
+
+## 测试记录
+- 命令：`cd go-backend && go test ./internal/http/handler/...`
+- 结果：通过。
+
+## 运维升级顺序（推荐）
+1. 先发布本次后端兼容补丁（无需等待所有 agent 同步升级）。
+2. 按 10%-20% 灰度分批升级 agent（低风险节点 -> 非高峰节点 -> 全量）。
+3. 每批升级后执行一次“转发批量重部署”，将运行态统一到新服务命名。
+4. 观察日志中 `service .* not found` 是否清零，再推进下一批。
+5. 全量稳定后保留兼容逻辑至少一个小版本周期，再评估收敛。

plans/012-allow-user-custom-inport-with-range-validation.md

@@ -0,0 +1,158 @@
+# Plan 012: 允许用户自定义转发入口端口（限制在节点端口范围内）
+
+**Issue**: #268  
+**状态**: 已完成
+
+## 背景
+
+当前版本限制了普通用户自定义转发入口端口 (inPort) 的能力，导致：
+- 用户迁移数据后无法保留原有端口配置
+- 无法编辑转发配置
+- 需要重建所有转发，操作繁琐
+
+## 实现方案
+
+允许用户和管理员自定义转发入口端口，但强制在节点端口设置的范围内。
+
+### 默认行为
+- 不填写端口 → 随机分配（在端口范围内）
+- 填写端口 → 使用指定端口（需在范围内且不冲突）
+
+---
+
+## 任务清单
+
+### 1. 后端修改
+
+- [x] **1.1 移除非管理员 inPort 权限限制**
+  - 文件: `go-backend/internal/http/handler/mutations.go`
+  - 位置: `forwardCreate` 函数 (约 L1156-1167)
+  - 位置: `forwardUpdate` 函数 (约 L1279-1291)
+  - 操作: 删除 `roleID != 0` 时阻止 inPort 设置的逻辑
+  - 状态: 代码中已无 inPort 权限限制
+
+- [x] **1.2 添加本地节点端口范围验证函数**
+  - 文件: `go-backend/internal/http/handler/mutations.go`
+  - 新增函数: `validateLocalNodePort(node *nodeRecord, port int) error`
+  - 逻辑: 使用 `parsePortRangeSpec` 解析端口范围，验证 port 是否在范围内
+  - 状态: 函数已存在于 L3517-3533
+
+- [x] **1.3 修改 forwardCreate 端口验证**
+  - 文件: `go-backend/internal/http/handler/mutations.go`
+  - 位置: `forwardCreate` 中 entry nodes 遍历处 (约 L1188-1197)
+  - 操作: 
+    - 对远程节点使用现有 `validateRemoteNodePort`
+    - 对本地节点使用新的 `validateLocalNodePort`
+    - 若用户指定的端口超出节点范围，返回错误提示
+  - 状态: 已实现
+
+- [x] **1.4 修改 forwardUpdate 端口验证**
+  - 文件: `go-backend/internal/http/handler/mutations.go`
+  - 位置: `forwardUpdate` 中 entry nodes 遍历处 (约 L1326-1335)
+  - 操作: 同 1.3，添加本地节点端口范围验证
+  - 状态: 已实现
+
+- [x] **1.5 `ListUserAccessibleTunnels` 添加端口范围信息**
+  - 文件: `go-backend/internal/store/repo/repository.go`
+  - 位置: L751-775
+  - 操作:
+    - 查询隧道关联的入口节点 (通过 `chain_tunnel` 表 `chain_type=1`)
+    - 获取入口节点的端口范围 (`node.port` 字段)
+    - 使用 `parsePortRangeSpec` 解析并计算 min/max
+    - 在返回的 map 中添加 `portRangeMin` 和 `portRangeMax` 字段
+  - 状态: 已实现
+
+- [x] **1.6 `ListEnabledTunnelSummaries` 添加端口范围信息**
+  - 文件: `go-backend/internal/store/repo/repository.go`
+  - 位置: L777-796
+  - 操作: 同 1.5，为管理员视图也提供端口范围信息
+  - 状态: 已实现
+
+### 2. 前端修改
+
+- [x] **2.1 为所有用户显示 inPort 输入框**
+  - 文件: `vite-frontend/src/pages/forward.tsx`
+  - 位置: 约 L4350-4369
+  - 操作: 移除 `{isAdmin && (` 条件包装，改为所有用户可见
+  - 状态: 已实现
+
+- [x] **2.2 提交时包含 inPort（非仅管理员）**
+  - 文件: `vite-frontend/src/pages/forward.tsx`
+  - 位置: `handleSave` 函数 (约 L1435, L1447)
+  - 操作: 移除 `...(isAdmin ? { inPort: form.inPort } : {})` 条件，直接包含 inPort
+  - 状态: 已实现
+
+- [x] **2.3 更新 Tunnel 接口添加 portRangeMin/Max**
+  - 文件: `vite-frontend/src/pages/forward.tsx`
+  - 位置: L123-131
+  - 操作: 添加 `portRangeMin?: number; portRangeMax?: number;`
+  - 状态: 已实现
+
+- [x] **2.4 inPort 输入框显示端口范围提示**
+  - 文件: `vite-frontend/src/pages/forward.tsx`
+  - 位置: L4350-4369
+  - 操作: 
+    - 基于 `form.tunnelId` 获取当前隧道的端口范围
+    - 在 Input 的 `description` 中显示提示，如: `"指定入口端口，留空自动分配 (允许范围: 10000-20000)"`
+  - 状态: 已实现
+
+- [x] **2.5 前端端口范围验证**
+  - 文件: `vite-frontend/src/pages/forward.tsx`
+  - 位置: 验证函数 (L1271-1279)
+  - 操作: 前端也做范围预检查，超出范围时显示错误
+  - 状态: 已实现并修复语法错误
+
+### 3. 测试修改
+
+- [x] **3.1 更新权限测试**
+  - 文件: `go-backend/tests/contract/forward_contract_test.go`
+  - 位置: L1001-1119
+  - 操作:
+    - 修改 "non-admin cannot set inPort" 测试为允许设置
+    - 新增 "non-admin inPort within range" 测试（通过）
+    - 新增 "non-admin inPort out of range" 测试（失败）
+  - 状态: 已更新
+
+- [x] **3.2 新增端口范围验证测试**
+  - 文件: `go-backend/tests/contract/forward_contract_test.go`
+  - 操作:
+    - 测试本地节点端口范围验证
+    - 测试远程节点端口范围验证（已有 `validateRemoteNodePort` 相关测试可参考）
+  - 状态: 已添加
+
+---
+
+## 关键代码位置
+
+| 功能 | 文件 | 行号 |
+|------|------|------|
+| 前端 inPort 输入框 | `vite-frontend/src/pages/forward.tsx` | L4350-4369 |
+| 前端提交条件 | `vite-frontend/src/pages/forward.tsx` | L1435, L1447 |
+| 后端创建权限检查 | `go-backend/internal/http/handler/mutations.go` | L1156-1167 |
+| 后端更新权限检查 | `go-backend/internal/http/handler/mutations.go` | L1279-1291 |
+| 远程节点端口验证 | `go-backend/internal/http/handler/federation.go` | L562-574 |
+| 本地节点端口验证 | `go-backend/internal/http/handler/mutations.go` | L3517-3533 |
+| 端口范围解析 | `go-backend/internal/store/repo/repository_mutations.go` | L1370-1412 |
+| 用户隧道列表 | `go-backend/internal/store/repo/repository.go` | L751-775 |
+| 管理员隧道列表 | `go-backend/internal/store/repo/repository.go` | L777-796 |
+| 合约测试 | `go-backend/tests/contract/forward_contract_test.go` | L1001-1119 |
+
+---
+
+## 验收标准
+
+1. ✅ 普通用户可以在创建转发时指定 inPort
+2. ✅ 普通用户可以在编辑转发时修改 inPort
+3. ✅ 指定的端口必须在节点端口范围内，否则返回错误
+4. ✅ 留空 inPort 时行为不变（自动分配）
+5. ✅ 前端显示端口范围提示
+6. ✅ 所有合约测试通过
+
+---
+
+## 实施总结
+
+该计划的大部分代码已在之前的开发中实现。本次实施主要完成了以下工作：
+
+1. **修复前端验证代码语法错误** - `forward.tsx` 中 `validateForm` 函数的端口范围验证代码存在语法错误，已修复
+2. **更新测试用例** - 将原本期望权限拒绝的测试改为端口范围验证测试，并修正了测试中使用的端口号