{"record":{"id":"cc698f66f5795a1c","repo":"fish2018/pansou","slug":"w-cc698f","errorCode":null,"errorMessage":"解析代理地址失败: %w","messagePattern":"解析代理地址失败: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"plugin/gying/gying.go","lineNumber":1634,"sourceCode":"\tif transportValue.Kind() != reflect.Ptr || transportValue.IsNil() {\n\t\treturn fmt.Errorf(\"scraper transport 无效\")\n\t}\n\n\ttransportElem := transportValue.Elem()\n\tbaseTransportField := transportElem.FieldByName(\"Transport\")\n\tif !baseTransportField.IsValid() || baseTransportField.IsNil() {\n\t\treturn fmt.Errorf(\"未找到底层 transport\")\n\t}\n\n\tbaseTransportValue := reflect.NewAt(baseTransportField.Type(), unsafe.Pointer(baseTransportField.UnsafeAddr())).Elem()\n\tbaseTransport, ok := baseTransportValue.Interface().(*http.Transport)\n\tif !ok || baseTransport == nil {\n\t\treturn fmt.Errorf(\"底层 transport 无效\")\n\t}\n\n\tproxyURL, err := url.Parse(config.AppConfig.ProxyURL)\n\tif err != nil {\n\t\treturn fmt.Errorf(\"解析代理地址失败: %w\", err)\n\t}\n\n\tif proxyURL.Scheme == \"socks5\" {\n\t\tdialer, err := proxy.FromURL(proxyURL, proxy.Direct)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"创建SOCKS5代理失败: %w\", err)\n\t\t}\n\t\tbaseTransport.Proxy = nil\n\t\tbaseTransport.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {\n\t\t\treturn dialer.Dial(network, addr)\n\t\t}\n\t} else {\n\t\tbaseTransport.Proxy = http.ProxyURL(proxyURL)\n\t}\n\n\tif DebugLog {\n\t\tfmt.Printf(\"[Gying] 已应用代理到scraper: %s\\n\", config.AppConfig.ProxyURL)\n\t}","sourceCodeStart":1616,"sourceCodeEnd":1652,"githubUrl":"https://github.com/fish2018/pansou/blob/beaa56133755a548ebc51b090b3816e2ae044aa6/plugin/gying/gying.go#L1616-L1652","documentation":"When building an HTTP transport that routes through a proxy, the plugin parses config.AppConfig.ProxyURL with url.Parse. If the configured proxy string is not a valid URL, url.Parse returns an error which is wrapped as '解析代理地址失败: %w'. This happens before any network connection is attempted — it is purely a configuration parsing failure.","triggerScenarios":"ProxyURL in the application config is set to a malformed value (e.g. missing scheme, spaces, invalid characters, 'http://[bad-ipv6', or a bare 'host:port' with stray characters) and the plugin initializes its proxy-aware transport.","commonSituations":"User typo in the proxy setting; environment-specific config with unescaped characters; copying a SOCKS URI like 'socks5://user:pass@host:port' with an unencoded password containing '@' or ':'; empty-but-present string or whitespace from an env var.","solutions":["Fix ProxyURL in the config to a well-formed absolute URL, e.g. socks5://127.0.0.1:1080 or http://user:pass@proxy:8080 (URL-encode credentials with url.UserPassword).","Trim whitespace and check the value actually parsed — log url.Parse's error detail from the wrapped %w to see the offending component.","Pre-validate the proxy string at config-load time with url.Parse and fail fast with a clear message.","Remove the proxy setting entirely if no proxy is needed, so the non-proxy transport branch is used."],"exampleFix":"// before\nProxyURL = \"socks5:// 127.0.0.1:1080\"        // space -> parse error\n// after\nProxyURL = \"socks5://127.0.0.1:1080\"          // valid\n// optional guard\nif _, err := url.Parse(cfg.ProxyURL); err != nil { return fmt.Errorf(\"invalid proxy URL %q: %w\", cfg.ProxyURL, err) }","handlingStrategy":"validation","validationCode":"func validProxyURL(s string) bool {\n    if s == \"\" { return true } // no proxy is fine\n    u, err := url.Parse(strings.TrimSpace(s))\n    return err == nil && u.Scheme != \"\" && u.Host != \"\"\n}\n// check before setting AppConfig.ProxyURL or before transport setup","typeGuard":null,"tryCatchPattern":"transport, err := buildProxyTransport(cfg)\nif err != nil {\n    if strings.Contains(err.Error(), \"解析代理地址失败\") {\n        log.Warnf(\"bad proxy URL %q, falling back to direct\", cfg.ProxyURL)\n        transport = defaultTransport()\n    } else { return err }\n}","preventionTips":["URL-encode proxy credentials (use url.UserPassword for userinfo).","Trim whitespace from env-var-derived config values before storing ProxyURL.","Test the proxy string with url.Parse in a config self-check at startup.","Document accepted schemes (http, https, socks5) in the config reference."],"tags":["proxy","url","configuration","http-transport"],"backgroundTag":"invalid-url","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"}