{"record":{"id":"fe20c960e12098d4","repo":"XTLS/Xray-core","slug":"failed-to-establish-connection-to-server","errorCode":null,"errorMessage":"failed to establish connection to server","messagePattern":"failed to establish connection to server","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"proxy/socks/client.go","lineNumber":108,"sourceCode":"\t\tPort:    destination.Port,\n\t}\n\n\tif destination.Network == net.Network_UDP {\n\t\trequest.Command = protocol.RequestCommandUDP\n\t}\n\n\tuser := server.User\n\tif user != nil {\n\t\trequest.User = user\n\t\tp = c.policyManager.ForLevel(user.Level)\n\t}\n\n\tif err := conn.SetDeadline(time.Now().Add(p.Timeouts.Handshake)); err != nil {\n\t\terrors.LogInfoInner(ctx, err, \"failed to set deadline for handshake\")\n\t}\n\tudpRequest, err := ClientHandshake(request, conn, conn)\n\tif err != nil {\n\t\treturn errors.New(\"failed to establish connection to server\").AtWarning().Base(err)\n\t}\n\tif udpRequest != nil {\n\t\tif udpRequest.Address == net.AnyIP || udpRequest.Address == net.AnyIPv6 {\n\t\t\tudpRequest.Address = dest.Address\n\t\t}\n\t}\n\n\tif err := conn.SetDeadline(time.Time{}); err != nil {\n\t\terrors.LogInfoInner(ctx, err, \"failed to clear deadline after handshake\")\n\t}\n\n\tvar newCtx context.Context\n\tvar newCancel context.CancelFunc\n\tif session.TimeoutOnlyFromContext(ctx) {\n\t\tnewCtx, newCancel = context.WithCancel(context.Background())\n\t}\n\n\tctx, cancel := context.WithCancel(ctx)","sourceCodeStart":90,"sourceCodeEnd":126,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/proxy/socks/client.go#L90-L126","documentation":"Error \"failed to establish connection to server\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at proxy/socks/client.go:108 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"7d214f8b094f75322fa3990f8aadad1c912f24f5","analyzedAt":"2026-08-15T14:26:24.325Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}