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Title: fix: send error to client when SSE stream disconnects without response by skyvanguard · Pull Request #1949 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix: send error to client when SSE stream disconnects without response by skyvanguard · Pull Request #1949 · modelcontextprotocol/python-sdk

X Title: fix: send error to client when SSE stream disconnects without response by skyvanguard · Pull Request #1949 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - fix: send error to client when SSE stream disconnects without response by skyvanguard · Pull Request #1949 · modelcontextprotocol/python-sdk

Open Graph Description: Summary Fixes #1811 When the SSE stream disconnects before the server sends a response (e.g., due to a read timeout on long-running tool calls), and no event ID has been received (making reconnecti...

X Description: Summary Fixes #1811 When the SSE stream disconnects before the server sends a response (e.g., due to a read timeout on long-running tool calls), and no event ID has been received (making reconnecti...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/1949

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Jan 24, 2026https://github.com/modelcontextprotocol/python-sdk/pull/1949#issue-3851048658
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January 24, 2026 09:25https://github.com/modelcontextprotocol/python-sdk/pull/1949#commits-pushed-8577e9f
fix: send error to client when SSE stream disconnects without responsehttps://github.com/modelcontextprotocol/python-sdk/pull/1949/commits/8577e9fb0f8e57bd138682a657adfc26e68f3251
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fix: add coverage pragmas for untestable code pathshttps://github.com/modelcontextprotocol/python-sdk/pull/1949/commits/355584bdda8d440be53c3d0a0dc083df005a11db
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fix: remove unnecessary pragma on now-covered exception handlerhttps://github.com/modelcontextprotocol/python-sdk/pull/1949/commits/25a20a29a8da8591714798546b0e38a8d36e68b1
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