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Extract BaseSession request ID increment logic #1102

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Extract BaseSession request ID increment logic #1102

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12 changes: 10 additions & 2 deletions src/mcp/shared/session.py
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Original file line number Diff line number Diff line change
Expand Up @@ -233,8 +233,7 @@ async def send_request(
Do not use this method to emit notifications! Use send_notification()
instead.
"""
request_id = self._request_id
self._request_id = request_id + 1
request_id = self.next_request_id()

response_stream, response_stream_reader = anyio.create_memory_object_stream[JSONRPCResponse | JSONRPCError](1)
self._response_streams[request_id] = response_stream
Expand Down Expand Up @@ -468,3 +467,12 @@ async def _handle_incoming(
) -> None:
"""A generic handler for incoming messages. Overwritten by subclasses."""
pass

def next_request_id(self) -> int:
"""
Increment the request ID and return its current value. Can be
overwritten by subclasses.
"""
request_id = self._request_id
self._request_id = request_id + 1
return request_id
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