fix: exit cleanly on stdio KeyboardInterrupt - #2671
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May 29, 2026 19:48
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Closing this older stdio-only version in favor of #2745, which covers the same issue with the broader transport-level guard and the follow-up CI fixes. Keeping only one active PR for this topic. |
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Fixes #2663. Handles Ctrl-C for FastMCP stdio runs at the stdio transport boundary so shutdown does not print a traceback. HTTP transports keep their existing behavior. Validation: uv run pytest tests\server\mcpserver\test_server.py::TestServer::test_run_stdio_exits_cleanly_on_keyboard_interrupt -q; uv run pytest tests\server\mcpserver\test_server.py -q; uv run python -m py_compile src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; uv run ruff check src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; uv run ruff format --check src\mcp\server\mcpserver\server.py tests\server\mcpserver\test_server.py; git diff --check.