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Add warning log when rejecting request with unknown/expired session ID (#2212)

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com>
This commit is contained in:
Ramesh Reddy Adutla 2026-03-06 16:55:37 +00:00 • committed by GitHub
commit eaf971cf25
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1 changed files with 6 additions and 2 deletions
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src/mcp/server/streamable_http_manager.py
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@ -272,6 +272,7 @@ class StreamableHTTPSessionManager:
# Unknown or expired session ID - return 404 per MCP spec
# TODO: Align error code once spec clarifies
# See: https://github.com/modelcontextprotocol/python-sdk/issues/1821
logger.info(f"Rejected request with unknown or expired session ID: {request_mcp_session_id[:64]}")
error_response = JSONRPCError(
jsonrpc="2.0",
id=None,