{"record":{"id":"b11adca668dd2a26","repo":"XTLS/Xray-core","slug":"failed-to-write-request-user-id","errorCode":null,"errorMessage":"failed to write request user id","messagePattern":"failed to write request user id","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"proxy/vless/encoding/encoding.go","lineNumber":39,"sourceCode":"\nvar addrParser = protocol.NewAddressParser(\n\tprotocol.AddressFamilyByte(byte(protocol.AddressTypeIPv4), net.AddressFamilyIPv4),\n\tprotocol.AddressFamilyByte(byte(protocol.AddressTypeDomain), net.AddressFamilyDomain),\n\tprotocol.AddressFamilyByte(byte(protocol.AddressTypeIPv6), net.AddressFamilyIPv6),\n\tprotocol.PortThenAddress(),\n)\n\n// EncodeRequestHeader writes encoded request header into the given writer.\nfunc EncodeRequestHeader(writer io.Writer, request *protocol.RequestHeader, requestAddons *Addons) error {\n\tbuffer := buf.StackNew()\n\tdefer buffer.Release()\n\n\tif err := buffer.WriteByte(request.Version); err != nil {\n\t\treturn errors.New(\"failed to write request version\").Base(err)\n\t}\n\n\tif _, err := buffer.Write(request.User.Account.(*vless.MemoryAccount).ID.Bytes()); err != nil {\n\t\treturn errors.New(\"failed to write request user id\").Base(err)\n\t}\n\n\tif err := EncodeHeaderAddons(&buffer, requestAddons); err != nil {\n\t\treturn errors.New(\"failed to encode request header addons\").Base(err)\n\t}\n\n\tif err := buffer.WriteByte(byte(request.Command)); err != nil {\n\t\treturn errors.New(\"failed to write request command\").Base(err)\n\t}\n\n\tif request.Command != protocol.RequestCommandMux && request.Command != protocol.RequestCommandRvs {\n\t\tif err := addrParser.WriteAddressPort(&buffer, request.Address, request.Port); err != nil {\n\t\t\treturn errors.New(\"failed to write request address and port\").Base(err)\n\t\t}\n\t}\n\n\tif _, err := writer.Write(buffer.Bytes()); err != nil {\n\t\treturn errors.New(\"failed to write request header\").Base(err)","sourceCodeStart":21,"sourceCodeEnd":57,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/proxy/vless/encoding/encoding.go#L21-L57","documentation":"Error \"failed to write request user id\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at proxy/vless/encoding/encoding.go:39 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"}