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Title: fix: send notifications/cancelled on request timeout and cancellation by weiguangli-io · Pull Request #2518 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix: send notifications/cancelled on request timeout and cancellation by weiguangli-io · Pull Request #2518 · modelcontextprotocol/python-sdk

X Title: fix: send notifications/cancelled on request timeout and cancellation by weiguangli-io · Pull Request #2518 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - fix: send notifications/cancelled on request timeout and cancellation by weiguangli-io · Pull Request #2518 · modelcontextprotocol/python-sdk

Open Graph Description: Fixes #2507 Root Cause BaseSession.send_request() never emits a notifications/cancelled message when its in-flight await is interrupted: Timeout (anyio.fail_after): raises MCPError without notifyi...

X Description: Fixes #2507 Root Cause BaseSession.send_request() never emits a notifications/cancelled message when its in-flight await is interrupted: Timeout (anyio.fail_after): raises MCPError without notifyi...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2518

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og:image:alt	Fixes #2507 Root Cause BaseSession.send_request() never emits a notifications/cancelled message when its in-flight await is interrupted: Timeout (anyio.fail_after): raises MCPError without notifyi...
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ClientSession never sends notifications/cancelled when call_tool is cancelled — server-side coroutines leak	https://github.com/modelcontextprotocol/python-sdk/issues/2507
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