{"record":{"id":"3320f6a04e032efe","repo":"XTLS/Xray-core","slug":"failed-to-build-sniffing-config-3320f6","errorCode":null,"errorMessage":"failed to build sniffing config","messagePattern":"failed to build sniffing config","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"infra/conf/xray.go","lineNumber":185,"sourceCode":"\t\t\treturn nil, errors.New(\"unable to listen on domain address: \", c.ListenOn.Domain())\n\t\t}\n\t}\n\n\tif c.StreamSetting != nil {\n\t\tss, err := c.StreamSetting.Build()\n\t\tif err != nil {\n\t\t\treturn nil, err\n\t\t}\n\t\treceiverSettings.StreamSettings = ss\n\t\tif strings.Contains(ss.SecurityType, \"reality\") && (receiverSettings.PortList == nil ||\n\t\t\tlen(receiverSettings.PortList.Ports()) != 1 || receiverSettings.PortList.Ports()[0] != 443) {\n\t\t\terrors.LogWarning(context.Background(), `REALITY: Listening on non-443 ports will increase the likelihood of your server's IP being blocked by the GFW`)\n\t\t}\n\t}\n\tif c.SniffingConfig != nil {\n\t\ts, err := c.SniffingConfig.Build()\n\t\tif err != nil {\n\t\t\treturn nil, errors.New(\"failed to build sniffing config\").Base(err)\n\t\t}\n\t\treceiverSettings.SniffingSettings = s\n\t}\n\n\tsettings := []byte(\"{}\")\n\tif c.Settings != nil {\n\t\tsettings = ([]byte)(*c.Settings)\n\t}\n\trawConfig, err := inboundConfigLoader.LoadWithID(settings, c.Protocol)\n\tif err != nil {\n\t\treturn nil, errors.New(\"failed to load inbound detour config for protocol \", c.Protocol).Base(err)\n\t}\n\tif dokodemoConfig, ok := rawConfig.(*DokodemoConfig); ok {\n\t\treceiverSettings.ReceiveOriginalDestination = dokodemoConfig.FollowRedirect\n\t}\n\tts, err := rawConfig.(Buildable).Build()\n\tif err != nil {\n\t\treturn nil, errors.New(\"failed to build inbound handler for protocol \", c.Protocol).Base(err)","sourceCodeStart":167,"sourceCodeEnd":203,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/infra/conf/xray.go#L167-L203","documentation":"Error \"failed to build sniffing config\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at infra/conf/xray.go:185 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"}