refactor(backend): rename OpenFlare directory to lowercase openflare

backend/openflare/plugins/server/domain/fleet/websocket/read_pump.go

@@ -0,0 +1,56 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package websocket
+
+import (
+	"encoding/json"
+	"log/slog"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+func runReadPump(
+	nodeID string,
+	conn *websocket.Conn,
+	closeFn func(),
+	logLabel string,
+	sendPong func(string) bool,
+	clientPongType string,
+) {
+	defer closeFn()
+	_ = conn.SetReadDeadline(time.Now().Add(wsReadDeadline))
+	conn.SetPongHandler(func(string) error {
+		return conn.SetReadDeadline(time.Now().Add(wsReadDeadline))
+	})
+
+	for {
+		_, data, err := conn.ReadMessage()
+		if err != nil {
+			slog.Debug(logLabel+" read closed", "node_id", nodeID, "error", err)
+			return
+		}
+
+		var message Message
+		if err = json.Unmarshal(data, &message); err != nil {
+			slog.Debug(logLabel+" invalid message", "node_id", nodeID, "error", err)
+			continue
+		}
+
+		switch message.Type {
+		case messageTypePing:
+			_ = sendPong(nodeID)
+		case clientPongType:
+			// Refresh read deadline when the client replies with a JSON pong.
+			// This keeps the connection alive when the WebSocket is proxied
+			// through Cloudflare, which enforces a 100-second idle timeout on
+			// the TCP stream. Without this refresh, the server's 90-second read
+			// deadline expires and terminates the connection even though the
+			// client is actively responding to pings.
+			_ = conn.SetReadDeadline(time.Now().Add(wsReadDeadline))
+		default:
+			slog.Debug(logLabel+" unsupported message", "node_id", nodeID, "type", message.Type)
+		}
+	}
+}