{"record":{"id":"c46288040acad8c8","repo":"XTLS/Xray-core","slug":"select-padding-start-delay-w","errorCode":null,"errorMessage":"select padding start delay: %w","messagePattern":"select padding start delay: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"transport/internet/finalmask/xmc/padding.go","lineNumber":142,"sourceCode":"\t\tif i > 0 && turn.direction == schedule[i-1].direction {\n\t\t\treturn fmt.Errorf(\"padding turns %d and %d have the same direction\", i-1, i)\n\t\t}\n\t}\n\treturn nil\n}\n\nfunc writePaddingTurn(w io.Writer, turn paddingTurn, prefixLength int) error {\n\treturn writePaddingTurnWithSleep(w, turn, prefixLength, time.Sleep)\n}\n\nfunc writePaddingTurnWithSleep(w io.Writer, turn paddingTurn, prefixLength int, sleep func(time.Duration)) error {\n\treturn writePaddingTurnWithBuffer(w, turn, prefixLength, sleep, nil)\n}\n\nfunc writePaddingTurnWithBuffer(w io.Writer, turn paddingTurn, prefixLength int, sleep func(time.Duration), reusableBuffer *[]byte) error {\n\tstartDelay, err := randomPaddingDelay(turn.startDelay)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"select padding start delay: %w\", err)\n\t}\n\tif startDelay > 0 {\n\t\tsleep(startDelay)\n\t}\n\n\ttargetLength, chunks, delays, err := selectPaddingVariant(turn, prefixLength)\n\tif err != nil {\n\t\treturn err\n\t}\n\trecordLength := targetLength - prefixLength\n\tif recordLength < 1 {\n\t\treturn fmt.Errorf(\"target length %d leaves an invalid record length %d\", targetLength, recordLength)\n\t}\n\n\tencodedLength := Varint(recordLength)\n\tvar header bytes.Buffer\n\tif err = encodedLength.writeTo(&header); err != nil {\n\t\treturn fmt.Errorf(\"write padding header: %w\", err)","sourceCodeStart":124,"sourceCodeEnd":160,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/transport/internet/finalmask/xmc/padding.go#L124-L160","documentation":"Error \"select padding start delay: %w\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at transport/internet/finalmask/xmc/padding.go:142 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"}