{"record":{"id":"e5c35fbf728ede1b","repo":"XTLS/Xray-core","slug":"failed-to-write-response-e5c35f","errorCode":null,"errorMessage":"failed to write response","messagePattern":"failed to write response","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"proxy/hysteria/server.go","lineNumber":161,"sourceCode":"\t\tcommon.Must(conn.SetReadDeadline(time.Time{}))\n\n\t\tdest, err := net.ParseDestination(\"tcp:\" + addr)\n\t\tif err != nil {\n\t\t\treturn err\n\t\t}\n\t\tctx = log.ContextWithAccessMessage(ctx, &log.AccessMessage{\n\t\t\tFrom:   conn.RemoteAddr(),\n\t\t\tTo:     dest,\n\t\t\tStatus: log.AccessAccepted,\n\t\t\tReason: \"\",\n\t\t\tEmail:  inbound.User.Email,\n\t\t})\n\t\terrors.LogInfo(ctx, \"tunnelling request to \", dest)\n\n\t\tbufferedWriter := buf.NewBufferedWriter(buf.NewWriter(conn))\n\t\terr = WriteTCPResponse(bufferedWriter, true, \"\")\n\t\tif err != nil {\n\t\t\treturn errors.New(\"failed to write response\").Base(err)\n\t\t}\n\t\tif err := bufferedWriter.SetBuffered(false); err != nil {\n\t\t\treturn err\n\t\t}\n\n\t\treturn dispatcher.DispatchLink(ctx, dest, &transport.Link{\n\t\t\tReader: buf.NewReader(conn),\n\t\t\tWriter: bufferedWriter,\n\t\t})\n\t}\n}\n\nfunc init() {\n\tcommon.Must(common.RegisterConfig((*ServerConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {\n\t\treturn NewServer(ctx, config.(*ServerConfig))\n\t}))\n}\n","sourceCodeStart":143,"sourceCodeEnd":179,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/proxy/hysteria/server.go#L143-L179","documentation":"Error \"failed to write response\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at proxy/hysteria/server.go:161 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":"2026-08-15T22:17:37.221Z"}