{"record":{"id":"735480a5ac985332","repo":"fish2018/pansou","slug":"url-w","errorCode":null,"errorMessage":"解析代理URL失败: %w","messagePattern":"解析代理URL失败: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"plugin/dy4k/dy4k.go","lineNumber":161,"sourceCode":"\t}\n\n\tif proxyURL == \"\" {\n\t\treturn transport, nil\n\t}\n\n\tif strings.HasPrefix(proxyURL, \"socks5://\") {\n\t\t// SOCKS5代理\n\t\tdialer, err := proxy.SOCKS5(\"tcp\", strings.TrimPrefix(proxyURL, \"socks5://\"), nil, proxy.Direct)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"创建SOCKS5代理失败: %w\", err)\n\t\t}\n\t\ttransport.Dial = dialer.Dial\n\t\tdebugPrintf(\"🔧 [Dy4k DEBUG] 使用SOCKS5代理: %s\\n\", proxyURL)\n\t} else {\n\t\t// HTTP代理\n\t\tparsedURL, err := url.Parse(proxyURL)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"解析代理URL失败: %w\", err)\n\t\t}\n\t\ttransport.Proxy = http.ProxyURL(parsedURL)\n\t\tdebugPrintf(\"🔧 [Dy4k DEBUG] 使用HTTP代理: %s\\n\", proxyURL)\n\t}\n\n\treturn transport, nil\n}\n\n// createOptimizedHTTPClient 创建优化的HTTP客户端（支持代理）\nfunc createOptimizedHTTPClient() *http.Client {\n\tvar selectedProxy string\n\n\tif ProxyEnabled {\n\t\t// 随机选择代理类型\n\t\tproxyTypes := []string{\"\", DefaultHTTPProxy, DefaultSocks5Proxy}\n\t\tselectedProxy = proxyTypes[rand.Intn(len(proxyTypes))]\n\t} else {\n\t\t// 代理未启用，使用直连","sourceCodeStart":143,"sourceCodeEnd":179,"githubUrl":"https://github.com/fish2018/pansou/blob/beaa56133755a548ebc51b090b3816e2ae044aa6/plugin/dy4k/dy4k.go#L143-L179","documentation":"In dy4k's createProxyTransport, url.Parse failed on the configured HTTP (non-SOCKS5) proxy URL, so createProxyTransport aborts with this wrapped error. url.Parse is lenient but rejects control characters, invalid percent-escapes, and some malformed schemes. Nothing has connected yet; this is purely a URL-syntax failure in configuration.","triggerScenarios":"The proxy string (from config/env) for the HTTP proxy branch is malformed — e.g. contains spaces, stray characters, or invalid escape sequences — so url.Parse(proxyURL) returns a non-nil error.","commonSituations":"Proxy env var set with surrounding whitespace or quotes pasted from a shell config; missing scheme handled elsewhere but an accidental 'http//:' typo breaks parsing; hostnames containing illegal characters from a template substitution.","solutions":["Log the exact proxyURL value and run url.Parse on it manually to see the parse error.","Normalize the config value: trim spaces/quotes and ensure a scheme prefix like http:// is present.","Pre-validate the proxy setting at startup and fail with a clear configuration message instead of at request time.","Use url.Parse with a scheme default, e.g. prepend \"http://\" when no scheme is present before parsing."],"exampleFix":"// before\nparsedURL, err := url.Parse(proxyURL)\nif err != nil {\n    return nil, fmt.Errorf(\"解析代理URL失败: %w\", err)\n}\n// after\nproxyURL = strings.TrimSpace(strings.Trim(proxyURL, \"\\\"'\"))\nparsedURL, err := url.Parse(proxyURL)\nif err != nil {\n    return nil, fmt.Errorf(\"解析代理URL失败 %q: %w\", proxyURL, err)\n}","handlingStrategy":"validation","validationCode":"func validateHTTPProxy(proxyURL string) error {\n    proxyURL = strings.TrimSpace(proxyURL)\n    if !strings.Contains(proxyURL, \"://\") {\n        proxyURL = \"http://\" + proxyURL\n    }\n    u, err := url.Parse(proxyURL)\n    if err != nil { return err }\n    if u.Host == \"\" { return fmt.Errorf(\"proxy missing host: %q\", proxyURL) }\n    return nil\n}","typeGuard":"func isParseableURL(s string) bool {\n    _, err := url.Parse(strings.TrimSpace(s))\n    return err == nil\n}","tryCatchPattern":null,"preventionTips":["Trim whitespace and quotes from config/env values before parsing.","Require or default a scheme (http://) for HTTP proxies.","Validate proxy config once at startup.","Log the offending URL in the error for faster diagnosis."],"tags":["proxy","url-parsing","config","http"],"backgroundTag":"invalid-url-format","analyzedSha":"beaa56133755a548ebc51b090b3816e2ae044aa6","analyzedAt":"2026-09-07T00:31:18.025Z","contentChangedAt":"2026-09-07T00:31:18.025Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}