{"record":{"id":"b8fcfd9678a5e749","repo":"vectordotdev/vector","slug":"should-not-fail-to-build-request","errorCode":null,"errorMessage":"should not fail to build request","messagePattern":"should not fail to build request","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/components/validation/resources/http.rs","lineNumber":266,"sourceCode":"                buffer.put_u8(b']');\n\n                // in this edge case we have removed the trailing comma (one byte) and added\n                // opening and closing braces (2 bytes) for a net add of one byte.\n                let mut runner_metrics = runner_metrics.lock().await;\n                runner_metrics.sent_bytes_total += 1;\n            }\n\n            let mut request_builder = Request::builder()\n                .uri(request_uri.clone())\n                .method(request_method.clone());\n\n            for (key, value) in &headers {\n                request_builder = request_builder.header(key, value);\n            }\n\n            let request = request_builder\n                .body(buffer.freeze().into())\n                .expect(\"should not fail to build request\");\n\n            match client.request(request).await {\n                Ok(_response) => {\n                    // TODO: Emit metric that tracks a successful response from the HTTP server.\n                    debug!(\"Got response from server.\");\n                }\n                Err(e) => {\n                    // TODO: Emit metric that tracks a failed response from the HTTP server.\n                    error!(\"Failed to send request: {e}\");\n                }\n            }\n        }\n\n        // Mark ourselves as completed now that we've sent all inputs to the source.\n        completed.mark_as_done();\n\n        info!(\"HTTP client external input resource completed.\");\n    });","sourceCodeStart":248,"sourceCodeEnd":284,"githubUrl":"https://github.com/vectordotdev/vector/blob/bdb87aeaa4c4ff27c0ba643c1c77b21bf2ef4013/src/components/validation/resources/http.rs#L248-L284","documentation":"The validation harness's HTTP client input driver builds an HTTP request whose body is the encoded test event buffer and `expect`s construction to succeed. Building a `Request` with a fixed-method, fixed-URI and a bytes body is normally infallible; a panic means the request builder was misconfigured (e.g. invalid URI/headers).","triggerScenarios":"`spawn_input_http_client` (called via `spawn_as_input`) building the request from the test-case's listen address, method and headers; `request_builder.body(...)` returning Err — typically from an invalid URI scheme/authority or unsupported header value.","commonSituations":"Test-case config with an invalid address/URI for the input HTTP client; non-ASCII or malformed header values configured in the test case; port collisions producing an unusable address.","solutions":["Check the test-case's `http` input client address/URI configuration for validity (scheme, host, port)","Verify all configured headers are valid ASCII HTTP header values","Ensure the listen address resolves (no typos, correct port)","Update Vector if the failure occurs with a default test case"],"exampleFix":"// before\naddress = \"localhost:8126\"\n// after (include scheme)\naddress = \"http://localhost:8126\"","handlingStrategy":"validation","validationCode":"// validate the request URI before running the test case\nconst u = new URL(testCase.address); // throws early on invalid URI\nif (!/^https?:$/.test(u.protocol)) throw new Error(\"must be http(s)\");","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Include scheme in configured addresses (http://host:port)","Keep headers ASCII and well-formed","Confirm the target address/port is free and resolvable"],"tags":["rust","validation","http","request"],"backgroundTag":"invalid-url-format","analyzedSha":"bdb87aeaa4c4ff27c0ba643c1c77b21bf2ef4013","analyzedAt":"2026-09-16T02:53:35.741Z","contentChangedAt":"2026-09-16T02:53:35.741Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}