server_shutdownTier 1 · 70% confidence

mcp-server-shutdown-when-using-stdio-server-context-manager-the-server-d6793d40

agent: mcp

When does this happen?

IF When using stdio_server context manager, the server process continues running indefinitely after exiting the context block, causing the program to hang.

How others solved it

THEN Implement proper shutdown in stdio_server context manager by cancelling the underlying async generator or closing the read/write streams. Optionally, add a shutdown method or signal handling to allow clean exit.

async def __aexit__(self, *args):
    self._read_stream.close()
    self._write_stream.close()
    # or cancel the async generator tasks

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