{"record":{"id":"f4609c297765f2f0","repo":"XTLS/Xray-core","slug":"select-padding-chunk-d-delay-w","errorCode":null,"errorMessage":"select padding chunk %d delay: %w","messagePattern":"select padding chunk (.+?) delay: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"transport/internet/finalmask/xmc/padding.go","lineNumber":205,"sourceCode":"\t\tmaxChunkLength = max(maxChunkLength, chunkLength)\n\t}\n\tvar buffer []byte\n\tif reusableBuffer == nil {\n\t\tbuffer = make([]byte, maxChunkLength)\n\t} else {\n\t\tif cap(*reusableBuffer) < maxChunkLength {\n\t\t\t*reusableBuffer = make([]byte, maxChunkLength)\n\t\t}\n\t\tbuffer = (*reusableBuffer)[:maxChunkLength]\n\t\tclear(buffer)\n\t}\n\tcopy(buffer, header.Bytes())\n\twritten := 0\n\tfor i, chunkLength := range chunks {\n\t\tif i < len(delays) {\n\t\t\tdelay, delayErr := randomPaddingDelay(delays[i])\n\t\t\tif delayErr != nil {\n\t\t\t\treturn fmt.Errorf(\"select padding chunk %d delay: %w\", i, delayErr)\n\t\t\t}\n\t\t\tif delay > 0 {\n\t\t\t\tsleep(delay)\n\t\t\t}\n\t\t}\n\t\tif err = writeFull(w, buffer[:chunkLength]); err != nil {\n\t\t\treturn fmt.Errorf(\"write padding chunk %d: %w\", i, err)\n\t\t}\n\t\twritten += chunkLength\n\t\tif i == 0 {\n\t\t\tclear(buffer[:header.Len()])\n\t\t}\n\t}\n\tif written != recordLength {\n\t\treturn fmt.Errorf(\"padding chunks total %d, want %d\", written, recordLength)\n\t}\n\treturn nil\n}","sourceCodeStart":187,"sourceCodeEnd":223,"githubUrl":"https://github.com/XTLS/Xray-core/blob/7d214f8b094f75322fa3990f8aadad1c912f24f5/transport/internet/finalmask/xmc/padding.go#L187-L223","documentation":"Error \"select padding chunk %d delay: %w\" thrown in XTLS/Xray-core.","triggerScenarios":"Thrown at transport/internet/finalmask/xmc/padding.go:205 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"}