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fix(tunnel): resolve UDP stream interruption and add KCP protocol support

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- Increase UDP listener default TTL from 5s to 30s to prevent idle disconnect
- Add mux keepalive config (15s interval, 45s timeout) to tunnel relay handler
- Add KCP as tunnel chain transport protocol with keepalive and UDP mode default
- Add KCP protocol option to tunnel UI (frontend)
- Remove generic 'tcp' fallback key from KCP metadata to prevent false TCP mode
- Simplify forward service config by removing unused tunnelTLSProtocol parameter
This commit is contained in:
sagitchu
2026-04-20 23:57:43 +08:00
parent 7f14bd30fa
commit 630e012ec1
11 changed files with 195 additions and 55 deletions
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go-backend/internal/http/handler/control_plane_test.go
+4 -4
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@@ -378,7 +378,7 @@ func TestRetryTunnelServiceAddWithCleanupReturnsCleanupError(t *testing.T) {
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)
services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22000, "10.9.8.7", nil)
if len(services) != 2 {
t.Fatalf("expected 2 services, got %d", len(services))
}
@@ -393,7 +393,7 @@ func TestBuildForwardServiceConfigs_UsesBindIPForListen(t *testing.T) {
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)
services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 22001, "", nil)
if len(services) != 2 {
t.Fatalf("expected 2 services, got %d", len(services))
}
@@ -409,7 +409,7 @@ func TestBuildForwardServiceConfigs_DefaultListenAddrWhenBindIPEmpty(t *testing.
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)
services := buildForwardServiceConfigs("1_2_0", forward, nil, node, 55555, "3.3.3.3:12345", nil)
if len(services) != 2 {
t.Fatalf("expected 2 services, got %d", len(services))
}
@@ -464,7 +464,7 @@ func TestBuildForwardServiceConfigs_IPv6BindIP(t *testing.T) {
t.Run(tt.name, func(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, tt.port, tt.bindIP, nil, false)
services := buildForwardServiceConfigs("1_2_0", forward, nil, node, tt.port, tt.bindIP, nil)
if len(services) != 2 {
t.Fatalf("expected 2 services, got %d", len(services))
}