release/v1.6.1
claude/github-issue-40-0au5ua
claude/linked-issue-acp-tui-u4vvpa
claude/minor-release-cut-vkugow
claude/sigit-acp-local-chat-cx6380
claude/sigit-cloud-agent-expansion-reox0a
claude/tool-permission-system
claude/zen-feynman-0u78dk
development
feature/acp-cancel-request
feature/acp-session-list-cursor
feature/acp-v1-conformance
feature/agent-tools-multiedit-glob-todos-remember
feature/cargo-workspace
feature/hooks
feature/load-local-model-explicitly
feature/sigit-agent-profile
feature/sigit-code-cloud
feature/xcode-mcp-server
fix/acp-replay-loaded-session-history
fix/acp-replay-reasoning-and-attachments
fix/dsml-doubled-bar-markers
main
release/v1.5.10
release/v1.5.6
release/v1.6.1
| 1 | //! End-to-end stdio MCP transport test against the real binary. |
| 2 | //! |
| 3 | //! Spawns `sigit` in ACP mode wired to a scripted OpenAI-compatible SSE |
| 4 | //! endpoint (the same harness as `acp_permissions.rs`) and to a temp |
| 5 | //! `SIGIT_CONFIG_DIR` whose `mcp.toml` configures three stdio servers, all |
| 6 | //! backed by the `mcp_stdio_stub` helper binary: |
| 7 | //! |
| 8 | //! - `stub` — healthy; exposes one `echo` tool and prefixes replies with the |
| 9 | //! `STUB_PREFIX` env var from `[server.env]`, proving env propagation. |
| 10 | //! - `dying` — completes the discovery handshake, then exits. Its tool is |
| 11 | //! offered to the model, but calling it must fail with an in-band error. |
| 12 | //! - `deadone` — exits(1) at spawn; discovery must record it unavailable and |
| 13 | //! offer no tools for it. |
| 14 | //! |
| 15 | //! The scripted model calls `mcp__stub__echo`, then `mcp__dying__echo`, then |
| 16 | //! finishes. The test asserts the tool round-trip, the dead-child error, and |
| 17 | //! the `/mcp` listing (command lines shown, dead server flagged). |
| 18 | |
| 19 | use std::collections::VecDeque; |
| 20 | use std::io::{BufRead, BufReader, Read, Write}; |
| 21 | use std::net::TcpListener; |
| 22 | use std::process::{Child, ChildStdin, Command, Stdio}; |
| 23 | use std::sync::mpsc::{Receiver, channel}; |
| 24 | use std::sync::{Arc, Mutex}; |
| 25 | use std::time::{Duration, Instant}; |
| 26 | |
| 27 | use serde_json::{Value, json}; |
| 28 | |
| 29 | const TIMEOUT: Duration = Duration::from_secs(60); |
| 30 | |
| 31 | // ── Scripted OpenAI-compatible endpoint ───────────────────────────────────── |
| 32 | |
| 33 | fn sse_body(events: &[Value]) -> String { |
| 34 | let mut body = String::new(); |
| 35 | for event in events { |
| 36 | body.push_str("data: "); |
| 37 | body.push_str(&event.to_string()); |
| 38 | body.push_str("\n\n"); |
| 39 | } |
| 40 | body.push_str("data: [DONE]\n\n"); |
| 41 | body |
| 42 | } |
| 43 | |
| 44 | fn sse_tool_call(id: &str, name: &str, arguments: &str) -> String { |
| 45 | sse_body(&[json!({ |
| 46 | "choices": [{"delta": {"tool_calls": [{ |
| 47 | "index": 0, |
| 48 | "id": id, |
| 49 | "function": {"name": name, "arguments": arguments}, |
| 50 | }]}}] |
| 51 | })]) |
| 52 | } |
| 53 | |
| 54 | fn sse_text(text: &str) -> String { |
| 55 | sse_body(&[json!({"choices": [{"delta": {"content": text}}]})]) |
| 56 | } |
| 57 | |
| 58 | /// Serves one scripted SSE response per request and records each request body. |
| 59 | struct FakeEndpoint { |
| 60 | port: u16, |
| 61 | requests: Arc<Mutex<Vec<Value>>>, |
| 62 | } |
| 63 | |
| 64 | fn start_fake_endpoint(responses: Vec<String>) -> FakeEndpoint { |
| 65 | let listener = TcpListener::bind("127.0.0.1:0").expect("bind fake endpoint"); |
| 66 | let port = listener.local_addr().unwrap().port(); |
| 67 | let requests: Arc<Mutex<Vec<Value>>> = Arc::default(); |
| 68 | let recorded = Arc::clone(&requests); |
| 69 | let queue = Mutex::new(VecDeque::from(responses)); |
| 70 | |
| 71 | std::thread::spawn(move || { |
| 72 | for stream in listener.incoming() { |
| 73 | let Ok(mut stream) = stream else { continue }; |
| 74 | let mut reader = BufReader::new(match stream.try_clone() { |
| 75 | Ok(clone) => clone, |
| 76 | Err(_) => continue, |
| 77 | }); |
| 78 | let mut content_length = 0usize; |
| 79 | loop { |
| 80 | let mut line = String::new(); |
| 81 | if reader.read_line(&mut line).unwrap_or(0) == 0 { |
| 82 | break; |
| 83 | } |
| 84 | let line = line.trim(); |
| 85 | if line.is_empty() { |
| 86 | break; |
| 87 | } |
| 88 | if let Some(length) = line.to_ascii_lowercase().strip_prefix("content-length:") { |
| 89 | content_length = length.trim().parse().unwrap_or(0); |
| 90 | } |
| 91 | } |
| 92 | let mut body = vec![0u8; content_length]; |
| 93 | if reader.read_exact(&mut body).is_err() { |
| 94 | continue; |
| 95 | } |
| 96 | if let Ok(request) = serde_json::from_slice::<Value>(&body) { |
| 97 | recorded.lock().unwrap().push(request); |
| 98 | } |
| 99 | let payload = queue |
| 100 | .lock() |
| 101 | .unwrap() |
| 102 | .pop_front() |
| 103 | .unwrap_or_else(|| sse_text("out of scripted responses")); |
| 104 | let response = format!( |
| 105 | "HTTP/1.1 200 OK\r\ncontent-type: text/event-stream\r\n\ |
| 106 | content-length: {}\r\nconnection: close\r\n\r\n{}", |
| 107 | payload.len(), |
| 108 | payload |
| 109 | ); |
| 110 | let _ = stream.write_all(response.as_bytes()); |
| 111 | } |
| 112 | }); |
| 113 | |
| 114 | FakeEndpoint { port, requests } |
| 115 | } |
| 116 | |
| 117 | // ── ACP client over the binary's stdio ────────────────────────────────────── |
| 118 | |
| 119 | struct AgentUnderTest { |
| 120 | child: Child, |
| 121 | stdin: ChildStdin, |
| 122 | incoming: Receiver<Value>, |
| 123 | next_id: u64, |
| 124 | } |
| 125 | |
| 126 | fn spawn_agent(port: u16, config_dir: &std::path::Path, cwd: &std::path::Path) -> AgentUnderTest { |
| 127 | let mut child = Command::new(env!("CARGO_BIN_EXE_sigit")) |
| 128 | .current_dir(cwd) |
| 129 | .env("OPENAI_BASE_URL", format!("http://127.0.0.1:{port}")) |
| 130 | .env("OPENAI_API_KEY", "test-key") |
| 131 | .env("SIGIT_MODEL", "scripted-model") |
| 132 | .env("SIGIT_CONFIG_DIR", config_dir) |
| 133 | // MCP stays ON (that's what we test), but the baked-in official |
| 134 | // server must not phone home from CI. |
| 135 | .env("SIGIT_MCP_OFFICIAL", "off") |
| 136 | .env_remove("SIGIT_MCP") |
| 137 | // MCP tools are mutating and would otherwise wait at the permission |
| 138 | // gate; permissions have their own test. |
| 139 | .env("SIGIT_PERMISSIONS", "allow") |
| 140 | .env_remove("SIGIT_LOCAL_INFERENCE") |
| 141 | .stdin(Stdio::piped()) |
| 142 | .stdout(Stdio::piped()) |
| 143 | .stderr(Stdio::null()) |
| 144 | .spawn() |
| 145 | .expect("spawn sigit in ACP mode"); |
| 146 | |
| 147 | let stdout = child.stdout.take().unwrap(); |
| 148 | let (message_tx, incoming) = channel(); |
| 149 | std::thread::spawn(move || { |
| 150 | for line in BufReader::new(stdout).lines() { |
| 151 | let Ok(line) = line else { break }; |
| 152 | if let Ok(message) = serde_json::from_str::<Value>(&line) |
| 153 | && message_tx.send(message).is_err() |
| 154 | { |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | }); |
| 159 | |
| 160 | let stdin = child.stdin.take().unwrap(); |
| 161 | AgentUnderTest { |
| 162 | child, |
| 163 | stdin, |
| 164 | incoming, |
| 165 | next_id: 0, |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | impl AgentUnderTest { |
| 170 | fn send(&mut self, message: Value) { |
| 171 | let mut line = message.to_string(); |
| 172 | line.push('\n'); |
| 173 | self.stdin |
| 174 | .write_all(line.as_bytes()) |
| 175 | .expect("write to agent stdin"); |
| 176 | self.stdin.flush().expect("flush agent stdin"); |
| 177 | } |
| 178 | |
| 179 | fn request(&mut self, method: &str, params: Value) -> u64 { |
| 180 | self.next_id += 1; |
| 181 | let id = self.next_id; |
| 182 | self.send(json!({"jsonrpc": "2.0", "id": id, "method": method, "params": params})); |
| 183 | id |
| 184 | } |
| 185 | |
| 186 | /// Wait for the response to our request `id`, collecting the raw JSON of |
| 187 | /// every `session/update` notification that arrives before it. |
| 188 | fn wait_for_response_collecting_updates(&mut self, id: u64) -> (Value, String) { |
| 189 | let deadline = Instant::now() + TIMEOUT; |
| 190 | let mut updates = String::new(); |
| 191 | loop { |
| 192 | let remaining = deadline.saturating_duration_since(Instant::now()); |
| 193 | match self.incoming.recv_timeout(remaining) { |
| 194 | Ok(message) if message["id"] == id && message.get("method").is_none() => { |
| 195 | assert!( |
| 196 | message.get("error").is_none(), |
| 197 | "request {id} failed: {message}" |
| 198 | ); |
| 199 | return (message, updates); |
| 200 | } |
| 201 | Ok(message) => { |
| 202 | if message["method"] == "session/update" { |
| 203 | updates.push_str(&message["params"].to_string()); |
| 204 | updates.push('\n'); |
| 205 | } |
| 206 | } |
| 207 | Err(_) => panic!("timed out waiting for response to request {id}"), |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | fn wait_for_response(&mut self, id: u64) -> Value { |
| 213 | self.wait_for_response_collecting_updates(id).0 |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | impl Drop for AgentUnderTest { |
| 218 | fn drop(&mut self) { |
| 219 | let _ = self.child.kill(); |
| 220 | let _ = self.child.wait(); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | // ── The round-trip ────────────────────────────────────────────────────────── |
| 225 | |
| 226 | #[test] |
| 227 | fn stdio_mcp_discovery_call_and_dead_child() { |
| 228 | let stub = env!("CARGO_BIN_EXE_mcp_stdio_stub"); |
| 229 | |
| 230 | let endpoint = start_fake_endpoint(vec![ |
| 231 | sse_tool_call("call_1", "mcp__stub__echo", r#"{"text":"hello"}"#), |
| 232 | sse_tool_call("call_2", "mcp__dying__echo", r#"{"text":"gone"}"#), |
| 233 | sse_text("done"), |
| 234 | ]); |
| 235 | |
| 236 | let scratch = std::env::temp_dir().join(format!("sigit_mcp_stdio_{}", std::process::id())); |
| 237 | let config_dir = scratch.join("config"); |
| 238 | let cwd = scratch.join("cwd"); |
| 239 | std::fs::create_dir_all(&config_dir).unwrap(); |
| 240 | std::fs::create_dir_all(&cwd).unwrap(); |
| 241 | |
| 242 | // TOML literal strings (single quotes) keep Windows backslashes intact. |
| 243 | let mcp_toml = format!( |
| 244 | r#"official = false |
| 245 | |
| 246 | [[server]] |
| 247 | name = "stub" |
| 248 | command = '{stub}' |
| 249 | |
| 250 | [server.env] |
| 251 | STUB_PREFIX = "pfx:" |
| 252 | |
| 253 | [[server]] |
| 254 | name = "dying" |
| 255 | command = '{stub}' |
| 256 | args = ["--exit-after-list"] |
| 257 | |
| 258 | [[server]] |
| 259 | name = "deadone" |
| 260 | command = '{stub}' |
| 261 | args = ["--fail"] |
| 262 | "# |
| 263 | ); |
| 264 | std::fs::write(config_dir.join("mcp.toml"), mcp_toml).unwrap(); |
| 265 | |
| 266 | let mut agent = spawn_agent(endpoint.port, &config_dir, &cwd); |
| 267 | |
| 268 | let id = agent.request( |
| 269 | "initialize", |
| 270 | json!({"protocolVersion": 1, "clientCapabilities": {}}), |
| 271 | ); |
| 272 | agent.wait_for_response(id); |
| 273 | |
| 274 | let id = agent.request("session/new", json!({"cwd": cwd, "mcpServers": []})); |
| 275 | let session_id = agent.wait_for_response(id)["result"]["sessionId"] |
| 276 | .as_str() |
| 277 | .expect("session id") |
| 278 | .to_string(); |
| 279 | |
| 280 | // ── /mcp: listing shows command lines and flags the dead server ───── |
| 281 | let prompt_id = agent.request( |
| 282 | "session/prompt", |
| 283 | json!({ |
| 284 | "sessionId": session_id, |
| 285 | "prompt": [{"type": "text", "text": "/mcp"}], |
| 286 | }), |
| 287 | ); |
| 288 | let (_, listing) = agent.wait_for_response_collecting_updates(prompt_id); |
| 289 | // Raw JSON of the update notifications; escape the path the way JSON does |
| 290 | // so Windows backslashes compare correctly. |
| 291 | let stub_json = serde_json::to_string(stub).unwrap(); |
| 292 | let stub_escaped = stub_json.trim_matches('"'); |
| 293 | assert!( |
| 294 | listing.contains("mcp__stub__echo"), |
| 295 | "/mcp must list the healthy server's tool, got: {listing}" |
| 296 | ); |
| 297 | assert!( |
| 298 | listing.contains(stub_escaped), |
| 299 | "/mcp must show the stdio server's command line, got: {listing}" |
| 300 | ); |
| 301 | assert!( |
| 302 | listing.contains("--exit-after-list"), |
| 303 | "/mcp must include the args in the command line, got: {listing}" |
| 304 | ); |
| 305 | assert!( |
| 306 | listing.contains("unavailable"), |
| 307 | "/mcp must flag the server that died at spawn, got: {listing}" |
| 308 | ); |
| 309 | |
| 310 | // ── One prompt: echo round-trip, then the dead-child call ─────────── |
| 311 | let prompt_id = agent.request( |
| 312 | "session/prompt", |
| 313 | json!({ |
| 314 | "sessionId": session_id, |
| 315 | "prompt": [{"type": "text", "text": "use the stub tools"}], |
| 316 | }), |
| 317 | ); |
| 318 | let response = agent.wait_for_response(prompt_id); |
| 319 | assert_eq!(response["result"]["stopReason"], "end_turn"); |
| 320 | |
| 321 | // ── What the endpoint saw ──────────────────────────────────────────── |
| 322 | let requests = endpoint.requests.lock().unwrap(); |
| 323 | // Slash commands never reach the model, so all three completions belong |
| 324 | // to the tool-calling prompt. |
| 325 | assert_eq!(requests.len(), 3, "expected exactly three completions"); |
| 326 | |
| 327 | // The offered tool specs must include both live servers' echo tools and |
| 328 | // nothing from the server that failed discovery. |
| 329 | let tools = requests[0]["tools"].to_string(); |
| 330 | assert!( |
| 331 | tools.contains("mcp__stub__echo"), |
| 332 | "stub tool missing from specs: {tools}" |
| 333 | ); |
| 334 | assert!( |
| 335 | tools.contains("mcp__dying__echo"), |
| 336 | "dying server's tool missing from specs: {tools}" |
| 337 | ); |
| 338 | assert!( |
| 339 | !tools.contains("mcp__deadone__"), |
| 340 | "a server that failed discovery must contribute no tools: {tools}" |
| 341 | ); |
| 342 | |
| 343 | // The echo call's result must round-trip, carrying the [server.env] |
| 344 | // prefix (proving env vars reached the child). |
| 345 | let messages = requests[1]["messages"].as_array().expect("messages"); |
| 346 | let result = messages |
| 347 | .iter() |
| 348 | .find(|message| message["role"] == "tool" && message["tool_call_id"] == "call_1") |
| 349 | .expect("tool result for the echo call"); |
| 350 | assert_eq!( |
| 351 | result["content"].as_str().unwrap_or_default(), |
| 352 | "pfx:hello", |
| 353 | "echo result should carry the env-var prefix" |
| 354 | ); |
| 355 | |
| 356 | // The call to the server that died after discovery must come back as an |
| 357 | // in-band error string, not hang or crash the agent. |
| 358 | let messages = requests[2]["messages"].as_array().expect("messages"); |
| 359 | let result = messages |
| 360 | .iter() |
| 361 | .find(|message| message["role"] == "tool" && message["tool_call_id"] == "call_2") |
| 362 | .expect("tool result for the dead server's call"); |
| 363 | let content = result["content"].as_str().unwrap_or_default(); |
| 364 | assert!( |
| 365 | content.contains("Error") && content.contains("stdio server 'dying'"), |
| 366 | "dead-child call must fail in-band, got: {content}" |
| 367 | ); |
| 368 | |
| 369 | drop(agent); |
| 370 | let _ = std::fs::remove_dir_all(&scratch); |
| 371 | } |
| 372 | |
| 373 | // ── Servers the client supplies per session ───────────────────────────────── |
| 374 | |
| 375 | /// ACP clients pass MCP servers in `mcpServers` on `session/new`, and every |
| 376 | /// agent has to connect to the stdio ones (issue #135). The server belongs to |
| 377 | /// the session that named it: a second session opened without it must not be |
| 378 | /// offered its tools. |
| 379 | #[test] |
| 380 | fn client_supplied_stdio_server_is_scoped_to_its_session() { |
| 381 | let stub = env!("CARGO_BIN_EXE_mcp_stdio_stub"); |
| 382 | |
| 383 | let endpoint = start_fake_endpoint(vec![ |
| 384 | // The session without the server: one plain answer. |
| 385 | sse_text("nothing to call"), |
| 386 | // The session with it: call the tool, then finish. |
| 387 | sse_tool_call("call_1", "mcp__editor__echo", r#"{"text":"hello"}"#), |
| 388 | sse_text("done"), |
| 389 | ]); |
| 390 | |
| 391 | let scratch = |
| 392 | std::env::temp_dir().join(format!("sigit_mcp_client_servers_{}", std::process::id())); |
| 393 | let config_dir = scratch.join("config"); |
| 394 | let cwd = scratch.join("cwd"); |
| 395 | std::fs::create_dir_all(&config_dir).unwrap(); |
| 396 | std::fs::create_dir_all(&cwd).unwrap(); |
| 397 | // No startup servers at all, so every MCP tool seen below came from the |
| 398 | // client. |
| 399 | std::fs::write( |
| 400 | config_dir.join("mcp.toml"), |
| 401 | "official = false\nsmbcloud = false\n", |
| 402 | ) |
| 403 | .unwrap(); |
| 404 | |
| 405 | let mut agent = spawn_agent(endpoint.port, &config_dir, &cwd); |
| 406 | |
| 407 | let id = agent.request( |
| 408 | "initialize", |
| 409 | json!({"protocolVersion": 1, "clientCapabilities": {}}), |
| 410 | ); |
| 411 | agent.wait_for_response(id); |
| 412 | |
| 413 | let id = agent.request( |
| 414 | "session/new", |
| 415 | json!({ |
| 416 | "cwd": cwd, |
| 417 | "mcpServers": [{ |
| 418 | "name": "editor", |
| 419 | "command": stub, |
| 420 | "args": [], |
| 421 | "env": [{"name": "STUB_PREFIX", "value": "ed:"}], |
| 422 | }], |
| 423 | }), |
| 424 | ); |
| 425 | let with_server = agent.wait_for_response(id)["result"]["sessionId"] |
| 426 | .as_str() |
| 427 | .expect("session id") |
| 428 | .to_string(); |
| 429 | |
| 430 | let id = agent.request("session/new", json!({"cwd": cwd, "mcpServers": []})); |
| 431 | let without_server = agent.wait_for_response(id)["result"]["sessionId"] |
| 432 | .as_str() |
| 433 | .expect("session id") |
| 434 | .to_string(); |
| 435 | |
| 436 | let id = agent.request( |
| 437 | "session/prompt", |
| 438 | json!({ |
| 439 | "sessionId": without_server, |
| 440 | "prompt": [{"type": "text", "text": "anything to call?"}], |
| 441 | }), |
| 442 | ); |
| 443 | agent.wait_for_response(id); |
| 444 | |
| 445 | // Switching back to the first session has to bring its server with it. |
| 446 | let id = agent.request( |
| 447 | "session/prompt", |
| 448 | json!({ |
| 449 | "sessionId": with_server, |
| 450 | "prompt": [{"type": "text", "text": "/mcp"}], |
| 451 | }), |
| 452 | ); |
| 453 | let (_, listing) = agent.wait_for_response_collecting_updates(id); |
| 454 | assert!( |
| 455 | listing.contains("mcp__editor__echo") && listing.contains("from the editor"), |
| 456 | "/mcp must list the client-supplied server and say where it came from, got: {listing}" |
| 457 | ); |
| 458 | |
| 459 | let id = agent.request( |
| 460 | "session/prompt", |
| 461 | json!({ |
| 462 | "sessionId": with_server, |
| 463 | "prompt": [{"type": "text", "text": "use the editor tool"}], |
| 464 | }), |
| 465 | ); |
| 466 | let response = agent.wait_for_response(id); |
| 467 | assert_eq!(response["result"]["stopReason"], "end_turn"); |
| 468 | |
| 469 | let requests = endpoint.requests.lock().unwrap(); |
| 470 | assert_eq!(requests.len(), 3, "expected exactly three completions"); |
| 471 | |
| 472 | let tools = requests[0]["tools"].to_string(); |
| 473 | assert!( |
| 474 | !tools.contains("mcp__editor__"), |
| 475 | "a session must not be offered another session's server: {tools}" |
| 476 | ); |
| 477 | let tools = requests[1]["tools"].to_string(); |
| 478 | assert!( |
| 479 | tools.contains("mcp__editor__echo"), |
| 480 | "the client-supplied server's tool missing from specs: {tools}" |
| 481 | ); |
| 482 | |
| 483 | // The call round-trips, and the env the client sent reached the child. |
| 484 | let messages = requests[2]["messages"].as_array().expect("messages"); |
| 485 | let result = messages |
| 486 | .iter() |
| 487 | .find(|message| message["role"] == "tool" && message["tool_call_id"] == "call_1") |
| 488 | .expect("tool result for the echo call"); |
| 489 | assert_eq!(result["content"].as_str().unwrap_or_default(), "ed:hello"); |
| 490 | |
| 491 | drop(agent); |
| 492 | let _ = std::fs::remove_dir_all(&scratch); |
| 493 | } |
| 494 | |
| 495 | // ── HTTP servers the client supplies ──────────────────────────────────────── |
| 496 | |
| 497 | /// A Streamable HTTP MCP server with one `echo` tool. Records the |
| 498 | /// `Authorization` header of every request so the test can check that the |
| 499 | /// headers the client sent with the server definition reached it. |
| 500 | struct FakeMcpServer { |
| 501 | port: u16, |
| 502 | authorizations: Arc<Mutex<Vec<String>>>, |
| 503 | } |
| 504 | |
| 505 | fn start_fake_mcp_server() -> FakeMcpServer { |
| 506 | let listener = TcpListener::bind("127.0.0.1:0").expect("bind fake MCP server"); |
| 507 | let port = listener.local_addr().unwrap().port(); |
| 508 | let authorizations: Arc<Mutex<Vec<String>>> = Arc::default(); |
| 509 | let recorded = Arc::clone(&authorizations); |
| 510 | |
| 511 | std::thread::spawn(move || { |
| 512 | for stream in listener.incoming() { |
| 513 | let Ok(mut stream) = stream else { continue }; |
| 514 | let mut reader = BufReader::new(match stream.try_clone() { |
| 515 | Ok(clone) => clone, |
| 516 | Err(_) => continue, |
| 517 | }); |
| 518 | let mut content_length = 0usize; |
| 519 | loop { |
| 520 | let mut line = String::new(); |
| 521 | if reader.read_line(&mut line).unwrap_or(0) == 0 { |
| 522 | break; |
| 523 | } |
| 524 | let line = line.trim(); |
| 525 | if line.is_empty() { |
| 526 | break; |
| 527 | } |
| 528 | let lower = line.to_ascii_lowercase(); |
| 529 | if let Some(length) = lower.strip_prefix("content-length:") { |
| 530 | content_length = length.trim().parse().unwrap_or(0); |
| 531 | } |
| 532 | if lower.starts_with("authorization:") { |
| 533 | let value = line["authorization:".len()..].trim().to_string(); |
| 534 | recorded.lock().unwrap().push(value); |
| 535 | } |
| 536 | } |
| 537 | let mut body = vec![0u8; content_length]; |
| 538 | if reader.read_exact(&mut body).is_err() { |
| 539 | continue; |
| 540 | } |
| 541 | let Ok(message) = serde_json::from_slice::<Value>(&body) else { |
| 542 | continue; |
| 543 | }; |
| 544 | |
| 545 | let result = match message["method"].as_str().unwrap_or_default() { |
| 546 | "initialize" => Some(json!({ |
| 547 | "protocolVersion": "2025-06-18", |
| 548 | "capabilities": {"tools": {}}, |
| 549 | "serverInfo": {"name": "fake-http-mcp", "version": "0.0.0"}, |
| 550 | })), |
| 551 | "tools/list" => Some(json!({ |
| 552 | "tools": [{ |
| 553 | "name": "echo", |
| 554 | "description": "Echo the text back.", |
| 555 | "inputSchema": { |
| 556 | "type": "object", |
| 557 | "properties": {"text": {"type": "string"}}, |
| 558 | "required": ["text"], |
| 559 | }, |
| 560 | }], |
| 561 | })), |
| 562 | "tools/call" => { |
| 563 | let text = message["params"]["arguments"]["text"] |
| 564 | .as_str() |
| 565 | .unwrap_or_default(); |
| 566 | Some(json!({ |
| 567 | "content": [{"type": "text", "text": format!("http:{text}")}], |
| 568 | })) |
| 569 | } |
| 570 | _ => None, |
| 571 | }; |
| 572 | |
| 573 | let response = match (message.get("id"), result) { |
| 574 | (Some(id), Some(result)) => { |
| 575 | let payload = json!({"jsonrpc": "2.0", "id": id, "result": result}).to_string(); |
| 576 | format!( |
| 577 | "HTTP/1.1 200 OK\r\ncontent-type: application/json\r\n\ |
| 578 | content-length: {}\r\nconnection: close\r\n\r\n{}", |
| 579 | payload.len(), |
| 580 | payload |
| 581 | ) |
| 582 | } |
| 583 | // Notifications get an empty 202. |
| 584 | _ => "HTTP/1.1 202 Accepted\r\ncontent-length: 0\r\nconnection: close\r\n\r\n" |
| 585 | .to_string(), |
| 586 | }; |
| 587 | let _ = stream.write_all(response.as_bytes()); |
| 588 | } |
| 589 | }); |
| 590 | |
| 591 | FakeMcpServer { |
| 592 | port, |
| 593 | authorizations, |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /// A client only sends HTTP MCP servers to an agent that advertises |
| 598 | /// `mcpCapabilities.http`, and then expects them connected with the headers it |
| 599 | /// supplied (issue #151). SSE stays unadvertised. |
| 600 | #[test] |
| 601 | fn client_supplied_http_server_is_connected() { |
| 602 | let endpoint = start_fake_endpoint(vec![ |
| 603 | sse_tool_call("call_1", "mcp__remote__echo", r#"{"text":"hello"}"#), |
| 604 | sse_text("done"), |
| 605 | ]); |
| 606 | let mcp_server = start_fake_mcp_server(); |
| 607 | |
| 608 | let scratch = |
| 609 | std::env::temp_dir().join(format!("sigit_mcp_client_http_{}", std::process::id())); |
| 610 | let config_dir = scratch.join("config"); |
| 611 | let cwd = scratch.join("cwd"); |
| 612 | std::fs::create_dir_all(&config_dir).unwrap(); |
| 613 | std::fs::create_dir_all(&cwd).unwrap(); |
| 614 | std::fs::write( |
| 615 | config_dir.join("mcp.toml"), |
| 616 | "official = false\nsmbcloud = false\n", |
| 617 | ) |
| 618 | .unwrap(); |
| 619 | |
| 620 | let mut agent = spawn_agent(endpoint.port, &config_dir, &cwd); |
| 621 | |
| 622 | let id = agent.request( |
| 623 | "initialize", |
| 624 | json!({"protocolVersion": 1, "clientCapabilities": {}}), |
| 625 | ); |
| 626 | let initialize = agent.wait_for_response(id); |
| 627 | let capabilities = &initialize["result"]["agentCapabilities"]["mcpCapabilities"]; |
| 628 | assert_eq!( |
| 629 | capabilities["http"], true, |
| 630 | "HTTP MCP servers must be advertised: {initialize}" |
| 631 | ); |
| 632 | assert_eq!( |
| 633 | capabilities["sse"], false, |
| 634 | "the deprecated SSE transport must stay off: {initialize}" |
| 635 | ); |
| 636 | |
| 637 | let id = agent.request( |
| 638 | "session/new", |
| 639 | json!({ |
| 640 | "cwd": cwd, |
| 641 | "mcpServers": [{ |
| 642 | "type": "http", |
| 643 | "name": "remote", |
| 644 | "url": format!("http://127.0.0.1:{}/mcp", mcp_server.port), |
| 645 | "headers": [{"name": "Authorization", "value": "Bearer from-the-editor"}], |
| 646 | }], |
| 647 | }), |
| 648 | ); |
| 649 | let session_id = agent.wait_for_response(id)["result"]["sessionId"] |
| 650 | .as_str() |
| 651 | .expect("session id") |
| 652 | .to_string(); |
| 653 | |
| 654 | let id = agent.request( |
| 655 | "session/prompt", |
| 656 | json!({ |
| 657 | "sessionId": session_id, |
| 658 | "prompt": [{"type": "text", "text": "use the remote tool"}], |
| 659 | }), |
| 660 | ); |
| 661 | let response = agent.wait_for_response(id); |
| 662 | assert_eq!(response["result"]["stopReason"], "end_turn"); |
| 663 | |
| 664 | let requests = endpoint.requests.lock().unwrap(); |
| 665 | assert_eq!(requests.len(), 2, "expected exactly two completions"); |
| 666 | let tools = requests[0]["tools"].to_string(); |
| 667 | assert!( |
| 668 | tools.contains("mcp__remote__echo"), |
| 669 | "the HTTP server's tool missing from specs: {tools}" |
| 670 | ); |
| 671 | let messages = requests[1]["messages"].as_array().expect("messages"); |
| 672 | let result = messages |
| 673 | .iter() |
| 674 | .find(|message| message["role"] == "tool" && message["tool_call_id"] == "call_1") |
| 675 | .expect("tool result for the echo call"); |
| 676 | assert_eq!(result["content"].as_str().unwrap_or_default(), "http:hello"); |
| 677 | |
| 678 | // Every request to the server, handshake and call alike, carried the |
| 679 | // header from the server definition. |
| 680 | let authorizations = mcp_server.authorizations.lock().unwrap(); |
| 681 | assert!( |
| 682 | authorizations.len() >= 4, |
| 683 | "expected initialize, initialized, tools/list and tools/call, got {authorizations:?}" |
| 684 | ); |
| 685 | assert!( |
| 686 | authorizations |
| 687 | .iter() |
| 688 | .all(|value| value == "Bearer from-the-editor"), |
| 689 | "the client's headers must reach the server: {authorizations:?}" |
| 690 | ); |
| 691 | |
| 692 | drop(agent); |
| 693 | let _ = std::fs::remove_dir_all(&scratch); |
| 694 | } |