{"record":{"id":"1119114f2578c886","repo":"XTLS/Xray-core","slug":"failed-to-decode-request-header-addons","errorCode":null,"errorMessage":"failed to decode request header addons","messagePattern":"failed to decode request header addons","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"proxy/vless/encoding/encoding.go","lineNumber":105,"sourceCode":"\t\t\tbuffer.Clear()\n\t\t\tif _, err := buffer.ReadFullFrom(reader, 16); err != nil {\n\t\t\t\treturn nil, nil, nil, false, errors.New(\"failed to read request user id\").Base(err)\n\t\t\t}\n\t\t\tcopy(id[:], buffer.Bytes())\n\t\t}\n\n\t\tif request.User = validator.Get(id); request.User == nil {\n\t\t\tu := uuid.UUID(id)\n\t\t\treturn nil, nil, nil, isfb, errors.New(\"invalid request user id: \" + u.String())\n\t\t}\n\n\t\tif isfb {\n\t\t\tfirst.Advance(17)\n\t\t}\n\n\t\trequestAddons, err := DecodeHeaderAddons(&buffer, reader)\n\t\tif err != nil {\n\t\t\treturn nil, nil, nil, false, errors.New(\"failed to decode request header addons\").Base(err)\n\t\t}\n\n\t\tbuffer.Clear()\n\t\tif _, err := buffer.ReadFullFrom(reader, 1); err != nil {\n\t\t\treturn nil, nil, nil, false, errors.New(\"failed to read request command\").Base(err)\n\t\t}\n\n\t\trequest.Command = protocol.RequestCommand(buffer.Byte(0))\n\t\tswitch request.Command {\n\t\tcase protocol.RequestCommandMux:\n\t\t\trequest.Address = net.DomainAddress(\"v1.mux.cool\")\n\t\tcase protocol.RequestCommandRvs:\n\t\t\trequest.Address = net.DomainAddress(\"v1.rvs.cool\")\n\t\tcase protocol.RequestCommandTCP, protocol.RequestCommandUDP:\n\t\t\tif addr, port, err := addrParser.ReadAddressPort(&buffer, reader); err == nil {\n\t\t\t\trequest.Address = addr\n\t\t\t\trequest.Port = port\n\t\t\t}","sourceCodeStart":87,"sourceCodeEnd":123,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/proxy/vless/encoding/encoding.go#L87-L123","documentation":"Error \"failed to decode request header addons\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at proxy/vless/encoding/encoding.go:105 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"}