{"record":{"id":"39f411f9d1b22ff8","repo":"XTLS/Xray-core","slug":"invalid-padding-length","errorCode":null,"errorMessage":"invalid padding length","messagePattern":"invalid padding length","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"proxy/hysteria/protocol.go","lineNumber":52,"sourceCode":"\tbReader := quicvarint.NewReader(r)\n\taddrLen, err := quicvarint.Read(bReader)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\tif addrLen == 0 || addrLen > MaxAddressLength {\n\t\treturn \"\", errors.New(\"invalid address length\")\n\t}\n\taddrBuf := make([]byte, addrLen)\n\t_, err = io.ReadFull(r, addrBuf)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\tpaddingLen, err := quicvarint.Read(bReader)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\tif paddingLen > MaxPaddingLength {\n\t\treturn \"\", errors.New(\"invalid padding length\")\n\t}\n\tif paddingLen > 0 {\n\t\t_, err = io.CopyN(io.Discard, r, int64(paddingLen))\n\t\tif err != nil {\n\t\t\treturn \"\", err\n\t\t}\n\t}\n\treturn string(addrBuf), nil\n}\n\nfunc WriteTCPRequest(w io.Writer, addr string) error {\n\tpadding := hysteria.TcpRequestPadding.String()\n\tpaddingLen := len(padding)\n\taddrLen := len(addr)\n\tsz := int(quicvarint.Len(uint64(addrLen))) + addrLen +\n\t\tint(quicvarint.Len(uint64(paddingLen))) + paddingLen\n\tbuf := make([]byte, sz)\n\ti := varintPut(buf, uint64(addrLen))","sourceCodeStart":34,"sourceCodeEnd":70,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/proxy/hysteria/protocol.go#L34-L70","documentation":"Error \"invalid padding length\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at proxy/hysteria/protocol.go:52 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"}