{"record":{"id":"66d9cb2bfce3ebec","repo":"vxcontrol/pentagi","slug":"failed-to-create-http-client-w-66d9cb","errorCode":null,"errorMessage":"failed to create http client: %w","messagePattern":"failed to create http client: %w","errorType":"exception","errorClass":"Fatal","httpStatus":null,"severity":"error","filePath":"backend/pkg/tools/searchers/traversaal.go","lineNumber":74,"sourceCode":"\t\t\tlangfuse.WithEventLevel(langfuse.ObservationLevelWarning),\n\t\t\tlangfuse.WithEventMetadata(langfuse.Metadata{\n\t\t\t\t\"engine\": \"traversaal\",\n\t\t\t\t\"query\":  req.Query,\n\t\t\t\t\"error\":  err.Error(),\n\t\t\t}),\n\t\t)\n\n\t\tobs.LogErrorOrCancel(logger, err, \"failed to search in traversaal\")\n\t\treturn \"\", err\n\t}\n\n\treturn result, nil\n}\n\nfunc (t *traversaal) search(ctx context.Context, query string) (string, error) {\n\tclient, err := system.GetHTTPClient(t.cfg)\n\tif err != nil {\n\t\treturn \"\", Fatal(fmt.Errorf(\"failed to create http client: %w\", err))\n\t}\n\n\treqBody, err := json.Marshal(struct {\n\t\tQuery string `json:\"query\"`\n\t}{\n\t\tQuery: query,\n\t})\n\tif err != nil {\n\t\treturn \"\", Fatal(fmt.Errorf(\"failed to marshal request body: %v\", err))\n\t}\n\n\treq, err := http.NewRequest(http.MethodPost, traversaalURL, bytes.NewBuffer(reqBody))\n\tif err != nil {\n\t\treturn \"\", Fatal(fmt.Errorf(\"failed to build request: %v\", err))\n\t}\n\n\treq = req.WithContext(ctx)\n\treq.Header.Set(\"Content-Type\", \"application/json\")","sourceCodeStart":56,"sourceCodeEnd":92,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/tools/searchers/traversaal.go#L56-L92","documentation":"traversaal.search obtains an *http.Client via system.GetHTTPClient(t.cfg) and wraps any failure in a Fatal error 'failed to create http client: %w'. This fires when the shared HTTP client factory cannot build a client from the searcher config — typically invalid proxy URL or bad TLS settings in configuration.","triggerScenarios":"traversaal.Handle -> search() calls system.GetHTTPClient(t.cfg), which returns err (e.g. unparseable proxy URL, invalid TLS material), producing Fatal(fmt.Errorf(\"failed to create http client: %w\", err)).","commonSituations":"Malformed HTTP_PROXY/HTTPS_PROXY env values; bad custom CA cert file path in config; incorrect cfg passed to the searcher at construction; TLS scheme typos.","solutions":["Read the wrapped error — GetHTTPClient reports whether the proxy URL or TLS config is at fault.","Fix proxy environment variables (HTTP_PROXY/HTTPS_PROXY/NO_PROXY) to be valid URLs.","Verify any custom CA certificate paths/content in the searchers config.","Write a startup health check that constructs the HTTP client once so bad config fails fast at boot, not mid-search."],"exampleFix":"// before: silently continuing with nil-ish config\ncfg := config.Load()\n// after: validate proxy/TLS up front\nif _, err := system.GetHTTPClient(cfg); err != nil {\n    log.Fatalf(\"invalid HTTP client config: %v\", err)\n}","handlingStrategy":"validation","validationCode":"if _, err := system.GetHTTPClient(cfg); err != nil {\n    log.Fatalf(\"invalid HTTP client configuration: %v\", err)\n}","typeGuard":null,"tryCatchPattern":"result, err := traversaalSearcher.Handle(ctx, req)\nvar f *searchers.FatalError\nif errors.As(err, &f) && strings.Contains(f.Error(), \"failed to create http client\") {\n    return \"\", fmt.Errorf(\"fix proxy/TLS config for traversaal: %w\", err)\n}","preventionTips":["Validate HTTP_PROXY/HTTPS_PROXY values are parseable URLs at boot","Verify custom CA certificate files exist and are readable before deployment","Construct HTTP clients once at startup so config errors surface immediately"],"tags":["http","traversaal","config","proxy","tls"],"backgroundTag":"http-client-creation-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}