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Title: fix(streamable-http): close SSE responses on errors by Epochex · Pull Request #2633 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: fix(streamable-http): close SSE responses on errors by Epochex · Pull Request #2633 · modelcontextprotocol/python-sdk

X Title: fix(streamable-http): close SSE responses on errors by Epochex · Pull Request #2633 · modelcontextprotocol/python-sdk

Description: SSE response objects can be leaked when streaming fails or ends unexpectedly. This ensures HTTP responses are always closed in: _handle_sse_response _handle_resumption_request Fixes #1450. Tests: uv run --frozen python -m ruff check src/mcp/client/streamable_http.py tests/client/test_streamable_http_response_cleanup.py uv run --frozen python -m ruff format src/mcp/client/streamable_http.py tests/client/test_streamable_http_response_cleanup.py uv run --frozen pytest tests/client/test_streamable_http_response_cleanup.py -q

Open Graph Description: SSE response objects can be leaked when streaming fails or ends unexpectedly. This ensures HTTP responses are always closed in: _handle_sse_response _handle_resumption_request Fixes #1450. Tests:...

X Description: SSE response objects can be leaked when streaming fails or ends unexpectedly. This ensures HTTP responses are always closed in: _handle_sse_response _handle_resumption_request Fixes #1450. Tests:...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2633

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24495a5 fix(streamable-http): close SSE responses on errors Epochex May 18, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/2633/commits/24495a5273452957b84e519e0a56cf1fce982288
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