{"record":{"id":"f6dc8a38a0dd64e0","repo":"vxcontrol/pentagi","slug":"failed-to-create-http-client-w","errorCode":null,"errorMessage":"failed to create http client: %w","messagePattern":"failed to create http client: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/searchers/duckduckgo.go","lineNumber":140,"sourceCode":"\t\tobs.LogErrorOrCancel(logger, err, \"failed to search in DuckDuckGo\")\n\t\t// DuckDuckGo already retries transient failures internally (see search);\n\t\t// by the time an error surfaces here, moving to the next engine is the\n\t\t// right call rather than burning another round-trip on the same one.\n\t\treturn \"\", Fatal(fmt.Errorf(\"duckduckgo search failed: %w\", err))\n\t}\n\n\treturn result, nil\n}\n\n// search performs a web search using DuckDuckGo\nfunc (d *duckduckgo) search(ctx context.Context, query string, maxResults int) (string, error) {\n\t// Build form data for POST request\n\tformData := d.buildFormData(query)\n\n\t// Create HTTP client with proper configuration\n\tclient, err := system.GetHTTPClient(d.cfg)\n\tif err != nil {\n\t\treturn \"\", fmt.Errorf(\"failed to create http client: %w\", err)\n\t}\n\n\tclient.Timeout = duckduckgoTimeout\n\n\t// Execute request with retry logic\n\tvar response *searchResponse\n\tfor attempt := 0; attempt < duckduckgoMaxRetries; attempt++ {\n\t\treq, err := http.NewRequestWithContext(ctx, \"POST\", duckduckgoSearchURL, strings.NewReader(formData))\n\t\tif err != nil {\n\t\t\treturn \"\", fmt.Errorf(\"failed to create search request: %w\", err)\n\t\t}\n\n\t\t// Add necessary headers for POST request\n\t\treq.Header.Set(\"User-Agent\", duckduckgoUserAgent)\n\t\treq.Header.Set(\"Content-Type\", \"application/x-www-form-urlencoded\")\n\t\treq.Header.Set(\"Accept\", \"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\")\n\t\treq.Header.Set(\"Accept-Language\", \"en-US,en;q=0.9\")\n","sourceCodeStart":122,"sourceCodeEnd":158,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/searchers/duckduckgo.go#L122-L158","documentation":"search() calls system.GetHTTPClient(d.cfg) to build a configured *http.Client (proxy/TLS settings from config). If client construction fails (typically invalid proxy URL or bad TLS material in the config), the error is wrapped and search aborts before any request is made. This then surfaces to Handle as a Fatal duckduckgo search failure.","triggerScenarios":"system.GetHTTPClient returns an error because the configured proxy address in *config.Config is malformed (unparseable URL) or TLS configuration (cert files) cannot be loaded.","commonSituations":"Misconfigured HTTP_PROXY/HTTPS_PROXY env or config proxy field (e.g. missing scheme, spaces); pointing at a proxy cert that doesn't exist on disk; typo in proxy URL in .env / docker-compose environment.","solutions":["Check the wrapped error text for 'proxy' or 'tls'/'certificate' and fix the corresponding config value (valid URL like http://host:port).","Verify proxy env vars reachable from inside the Docker container, not just the host.","Unset the proxy config if no proxy is required so a direct client is built.","Validate config at startup (config_test / env validation) to fail fast on malformed proxy URLs."],"exampleFix":"// before (docker-compose.yml)\nSEARCH_PROXY: 192.168.1.10:8080\n// after\nSEARCH_PROXY: http://192.168.1.10:8080","handlingStrategy":"validation","validationCode":"// validate proxy URL from config before constructing the client\nif proxy := cfg.SearchProxyURL; proxy != \"\" {\n    if _, err := url.Parse(proxy); err != nil {\n        return fmt.Errorf(\"invalid proxy URL %q: %w\", proxy, err)\n    }\n}","typeGuard":null,"tryCatchPattern":"client, err := system.GetHTTPClient(d.cfg)\nif err != nil {\n    return \"\", fmt.Errorf(\"failed to create http client: %w\", err)\n}","preventionTips":["Validate proxy URLs and TLS cert paths in config parsing (fail at startup, not per-request)","Test the proxy from inside the container, not just the host","Document the expected proxy URL scheme in .env.example","Include config_test assertions for proxy defaults"],"tags":["http-client","proxy","configuration"],"backgroundTag":"invalid-proxy-configuration","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}