FU-P13-T4-2: Implement or remove reconnect parameter in BrokerProxy

SPECS/ARCHIVE/FU-P13-T4-2_Implement_or_remove_reconnect_parameter_in_BrokerProxy/FU-P13-T4-2_Implement_or_remove_reconnect_parameter_in_BrokerProxy.md

@@ -0,0 +1,83 @@
+# PRD: FU-P13-T4-2 — Implement or remove reconnect parameter in BrokerProxy
+
+**Created:** 2026-02-18
+**Priority:** P2
+**Branch:** `codex/feature/FU-P13-T4-2-reconnect-parameter`
+**Status:** PLAN
+
+---
+
+## 1. Problem Statement
+
+`BrokerProxy` accepts a `reconnect` parameter, stores it, and documents reconnect behavior, but `_run_bridge` never reads this setting. This leaves dead configuration in the API and ambiguous expectations for callers.
+
+---
+
+## 2. Scope
+
+### In Scope
+- Remove the unused `reconnect` parameter from `BrokerProxy.__init__` and internal state.
+- Remove reconnect claims from proxy module docs/docstrings that no longer match behavior.
+- Update call sites and tests that pass `reconnect=`.
+- Add/adjust tests to ensure no dead reconnect API remains.
+
+### Out of Scope
+- Adding reconnect loop behavior to proxy I/O lifecycle.
+- Broker daemon reconnect logic (`broker/daemon.py`).
+- New CLI flags for reconnect tuning.
+
+---
+
+## 3. Deliverables
+
+1. `src/mcpbridge_wrapper/broker/proxy.py`
+- Remove `reconnect` constructor argument and `_reconnect` field.
+- Update docstrings to reflect current behavior (no proxy-level reconnect retry).
+
+2. `src/mcpbridge_wrapper/__main__.py`
+- Remove obsolete `reconnect=False` argument at proxy construction.
+
+3. `tests/unit/test_broker_proxy.py`
+- Keep coverage around proxy forwarding/connect/exit behavior and ensure API remains clean.
+
+4. `SPECS/INPROGRESS/FU-P13-T4-2_Validation_Report.md`
+- Record quality-gate results and acceptance evidence.
+
+---
+
+## 4. Acceptance Criteria
+
+- [ ] `BrokerProxy.__init__` no longer exposes an unused `reconnect` parameter.
+- [ ] No dead reconnect state remains in proxy implementation.
+- [ ] Relevant unit tests pass with updated API.
+- [ ] Full quality gates pass:
+  - `pytest`
+  - `ruff check src/`
+  - `mypy src/`
+  - `pytest --cov` (coverage >= 90%)
+
+---
+
+## 5. Dependencies
+
+- P13-T4 ✅
+
+---
+
+## 6. Risks and Mitigations
+
+- **Risk:** Existing callers may still pass `reconnect=` and break at runtime.
+  - **Mitigation:** Update known call site (`__main__.py`) and run full test suite to catch hidden usage.
+
+---
+
+## 7. Validation Plan
+
+1. Search repository for `reconnect=` uses in proxy construction and remove obsolete usage.
+2. Run `pytest tests/unit/test_broker_proxy.py`.
+3. Run required quality gates and record outputs in validation report.
+
+
+---
+**Archived:** 2026-02-18
+**Verdict:** PASS

SPECS/ARCHIVE/FU-P13-T4-2_Implement_or_remove_reconnect_parameter_in_BrokerProxy/FU-P13-T4-2_Validation_Report.md

@@ -0,0 +1,78 @@
+# Validation Report: FU-P13-T4-2
+
+**Task:** FU-P13-T4-2 — Implement or remove reconnect parameter in BrokerProxy  
+**Date:** 2026-02-18  
+**Branch:** `codex/feature/FU-P13-T4-2-reconnect-parameter`
+
+## Scope validated
+
+- Removed the unused `reconnect` parameter from `BrokerProxy.__init__` and deleted dead `_reconnect` state.
+- Updated proxy construction in `src/mcpbridge_wrapper/__main__.py` to remove obsolete argument.
+- Updated proxy tests and added constructor-signature assertion to prevent reconnect API regression.
+
+## Quality gates
+
+### 1) Targeted task test
+
+Command:
+
+```bash
+pytest tests/unit/test_broker_proxy.py
+```
+
+Result: **PASS** (`16 passed`)
+
+### 2) Full test suite
+
+Command:
+
+```bash
+pytest
+```
+
+Result: **PASS** (`578 passed, 5 skipped`)
+
+### 3) Lint
+
+Command:
+
+```bash
+ruff check src/
+```
+
+Result: **PASS** (`All checks passed!`)
+
+### 4) Type checks
+
+Command:
+
+```bash
+mypy src/
+```
+
+Result: **PASS** (`Success: no issues found in 18 source files`)
+
+### 5) Coverage
+
+Command:
+
+```bash
+pytest --cov
+```
+
+Result: **PASS** (`Total coverage: 92.31%`, threshold: `>= 90%`)
+
+## Acceptance criteria evidence
+
+- [x] `BrokerProxy.__init__` no longer exposes an unused `reconnect` parameter.
+  - Evidence: `tests/unit/test_broker_proxy.py::TestBrokerProxyConnectTimeout::test_constructor_has_no_reconnect_parameter` passed.
+- [x] No dead reconnect state remains in proxy implementation.
+  - Evidence: `rg -n "reconnect|_reconnect" src/mcpbridge_wrapper/broker/proxy.py src/mcpbridge_wrapper/__main__.py` returned no reconnect parameter/state references.
+- [x] Relevant unit tests pass with updated API.
+  - Evidence: `pytest tests/unit/test_broker_proxy.py` -> `16 passed`.
+- [x] Full quality gates pass.
+  - Evidence: `pytest`, `ruff check src/`, `mypy src/`, and `pytest --cov` all passed; coverage `92.31%`.
+
+## Notes
+
+- Existing `websockets` deprecation warnings in Web UI tests remain unchanged and unrelated to this task.

SPECS/ARCHIVE/INDEX.md

@@ -1,6 +1,6 @@
 # mcpbridge-wrapper Tasks Archive
 
-**Last Updated:** 2026-02-18 (FU-P13-T4-1)
+**Last Updated:** 2026-02-18 (FU-P13-T4-2)
 
 ## Archived Tasks
 
@@ -111,6 +111,7 @@
 | P13-T5 | [P13-T5_Validate_prompt_reduction_and_multi_client_stability/](P13-T5_Validate_prompt_reduction_and_multi_client_stability/) | 2026-02-18 | PARTIAL |
 | P13-T6 | [P13-T6_Document_broker_mode_configuration_migration_and_rollback/](P13-T6_Document_broker_mode_configuration_migration_and_rollback/) | 2026-02-18 | PASS |
 | FU-P13-T4-1 | [FU-P13-T4-1_Fix_asyncio_get_event_loop_deprecation_in_BrokerProxy/](FU-P13-T4-1_Fix_asyncio_get_event_loop_deprecation_in_BrokerProxy/) | 2026-02-18 | PASS |
+| FU-P13-T4-2 | [FU-P13-T4-2_Implement_or_remove_reconnect_parameter_in_BrokerProxy/](FU-P13-T4-2_Implement_or_remove_reconnect_parameter_in_BrokerProxy/) | 2026-02-18 | PASS |
 
 ## Historical Artifacts
 
@@ -185,6 +186,7 @@
 | [REVIEW_P13-T5_prompt_reduction_multi_client_stability.md](_Historical/REVIEW_P13-T5_prompt_reduction_multi_client_stability.md) | Review report for P13-T5 |
 | [REVIEW_P13-T6_broker_mode_configuration_migration.md](_Historical/REVIEW_P13-T6_broker_mode_configuration_migration.md) | Review report for P13-T6 |
 | [REVIEW_FU-P13-T4-1_broker_proxy_loop.md](_Historical/REVIEW_FU-P13-T4-1_broker_proxy_loop.md) | Review report for FU-P13-T4-1 |
+| [REVIEW_FU-P13-T4-2_broker_proxy_reconnect.md](_Historical/REVIEW_FU-P13-T4-2_broker_proxy_reconnect.md) | Review report for FU-P13-T4-2 |
 
 ## Archive Log
 
@@ -324,3 +326,5 @@
 | 2026-02-18 | P13-T6 | Archived REVIEW_P13-T6_broker_mode_configuration_migration report |
 | 2026-02-18 | FU-P13-T4-1 | Archived Fix_asyncio_get_event_loop_deprecation_in_BrokerProxy (PASS) |
 | 2026-02-18 | FU-P13-T4-1 | Archived REVIEW_FU-P13-T4-1_broker_proxy_loop report |
+| 2026-02-18 | FU-P13-T4-2 | Archived Implement_or_remove_reconnect_parameter_in_BrokerProxy (PASS) |
+| 2026-02-18 | FU-P13-T4-2 | Archived REVIEW_FU-P13-T4-2_broker_proxy_reconnect report |

SPECS/ARCHIVE/_Historical/REVIEW_FU-P13-T4-2_broker_proxy_reconnect.md

@@ -0,0 +1,31 @@
+## REVIEW REPORT — FU-P13-T4-2 broker proxy reconnect
+
+**Scope:** origin/main..HEAD  
+**Files:** 8
+
+### Summary Verdict
+- [x] Approve
+- [ ] Approve with comments
+- [ ] Request changes
+- [ ] Block
+
+### Critical Issues
+- None.
+
+### Secondary Issues
+- None.
+
+### Architectural Notes
+- Removing the unused `reconnect` constructor argument reduces API surface area and aligns implementation, docs, and call sites.
+- The constructor-signature test in `tests/unit/test_broker_proxy.py` guards against accidental reintroduction of dead parameters.
+
+### Tests
+- Required quality gates were run during EXECUTE and all passed:
+  - `pytest`
+  - `ruff check src/`
+  - `mypy src/`
+  - `pytest --cov` (92.31%, threshold 90%)
+
+### Next Steps
+- No actionable review findings.
+- FOLLOW-UP step is skipped per FLOW rules.

SPECS/INPROGRESS/next.md

@@ -2,15 +2,15 @@
 
 ## Recently Archived
 
+- 2026-02-18 — FU-P13-T4-2: Implement or remove reconnect parameter in BrokerProxy (PASS)
 - 2026-02-18 — FU-P13-T4-1: Fix asyncio.get_event_loop() deprecation in BrokerProxy (PASS)
 - 2026-02-18 — P13-T6: Document broker mode configuration, migration, and rollback (PASS)
 - 2026-02-18 — P13-T5: Validate prompt reduction and multi-client stability (PARTIAL)
 - 2026-02-18 — P13-T4: Add stdio proxy mode for compatibility with existing MCP clients (PASS)
 - 2026-02-18 — P13-T3: Implement multi-client transport and JSON-RPC multiplexing (PASS)
-- 2026-02-17 — P13-T2: Implement persistent broker daemon with single upstream Xcode bridge (PASS)
 
 ## Suggested Next Tasks
 
-- FU-P13-T4-2 — Implement or remove `reconnect` parameter in `BrokerProxy` (P2)
 - P13-T5 follow-up — Complete interactive prompt verification in a desktop session (P1)
+- FU-P13-T2-1 — Replace run_forever() polling loop with asyncio.Event-based wait (P3)
 - FU-BUG-T7-1 — Cap `pending_methods` map to guard against unbounded growth (P3)

SPECS/Workplan.md

@@ -2080,7 +2080,8 @@ Phase 9 Follow-up Backlog
 
 ---
 
-#### FU-P13-T4-2: Implement or remove reconnect parameter in BrokerProxy
+#### ✅ FU-P13-T4-2: Implement or remove reconnect parameter in BrokerProxy
+- **Status:** ✅ Completed (2026-02-18)
 - **Description:** The `reconnect: bool` parameter is stored but never used in `_run_bridge`. Either implement the reconnect loop (retry once on broken socket before stdin EOF) or remove the parameter entirely and add a comment referencing P13-T5.
 - **Priority:** P2
 - **Dependencies:** P13-T4
@@ -2089,9 +2090,9 @@ Phase 9 Follow-up Backlog
   - Updated `src/mcpbridge_wrapper/broker/proxy.py`
   - Updated `tests/unit/test_broker_proxy.py`
 - **Acceptance Criteria:**
-  - [ ] `reconnect=True` either reconnects on broken socket or the parameter is removed
-  - [ ] No dead/unused code remains
-  - [ ] Tests pass
+  - [x] `reconnect=True` either reconnects on broken socket or the parameter is removed
+  - [x] No dead/unused code remains
+  - [x] Tests pass
 
 ---
 

src/mcpbridge_wrapper/__main__.py

@@ -255,7 +255,6 @@ def main() -> int:
             broker_config,
             auto_spawn=broker_spawn,
             connect_timeout=10.0,
-            reconnect=False,
         )
         try:
             asyncio.run(proxy.run())

src/mcpbridge_wrapper/broker/proxy.py

@@ -38,9 +38,6 @@ class BrokerProxy:
         flag.
     connect_timeout:
         Maximum seconds to wait for the broker socket to become available.
-    reconnect:
-        When ``True``, attempt to reconnect once if the socket connection is
-        broken before stdin EOF (covers broker RECONNECTING window).
     stdin:
         Asyncio stream to read from (defaults to ``sys.stdin.buffer``).
     stdout:
@@ -53,15 +50,13 @@ def __init__(
         *,
         auto_spawn: bool = False,
         connect_timeout: float = 10.0,
-        reconnect: bool = False,
         stdin: asyncio.StreamReader | None = None,
         stdout: asyncio.StreamWriter | None = None,
     ) -> None:
         """Initialise the proxy with the given broker configuration."""
         self._config = config
         self._auto_spawn = auto_spawn
         self._connect_timeout = connect_timeout
-        self._reconnect = reconnect
         self._stdin = stdin
         self._stdout = stdout
 

tests/unit/test_broker_proxy.py

@@ -7,7 +7,6 @@
 - EOF on socket causes clean exit
 - auto_spawn: spawns broker subprocess when socket absent
 - auto_spawn: no-op when broker already running (PID file present)
-- reconnect=False: broken connection is not retried
 - _parse_broker_args: --broker-connect flag
 - _parse_broker_args: --broker-spawn implies --broker-connect
 - _parse_broker_args: unknown flags pass through
@@ -16,6 +15,7 @@
 from __future__ import annotations
 
 import asyncio
+import inspect
 import os
 from pathlib import Path
 from unittest.mock import AsyncMock, MagicMock, patch
@@ -72,6 +72,10 @@ def _make_writer() -> MagicMock:
 
 
 class TestBrokerProxyConnectTimeout:
+    def test_constructor_has_no_reconnect_parameter(self) -> None:
+        params = inspect.signature(BrokerProxy.__init__).parameters
+        assert "reconnect" not in params
+
     @pytest.mark.asyncio
     async def test_raises_timeout_when_no_socket(self, tmp_path: Path) -> None:
         cfg = _make_config(tmp_path)