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modelcontextprotocol / python-sdk Public

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[v2] ClientSession runs on JSONRPCDispatcher; BaseSession removed#2838

Merged

maxisbey merged 28 commits into

mainmodelcontextprotocol/python-sdk:mainfrom

maxisbey/v2-client-dispatcher-swapmodelcontextprotocol/python-sdk:maxisbey/v2-client-dispatcher-swapCopy head branch name to clipboard

Jun 15, 2026

Conversation Commits28 (28)Checks Files changed

Merged

[v2] ClientSession runs on JSONRPCDispatcher; BaseSession removed#2838
maxisbey merged 28 commits into
mainfrom
maxisbey/v2-client-dispatcher-swap

Commits

Commits on Jun 12, 2026

Add courtesy-cancel controls and bound shielded dispatcher writes
maxisbey
committed
Contain notification-handler exceptions in the dispatcher
maxisbey
committed
Add an on_stream_exception observer to the dispatcher
maxisbey
committed
Collapse the dispatcher constructor overloads with a defaulted TypeVar
maxisbey
committed
Move ClientSession onto JSONRPCDispatcher and delete BaseSession
maxisbey
committed
Cover the remaining client-session branches and document the migration
maxisbey
committed
Stop logging an error when the standalone SSE stream closes mid-listen
maxisbey
committed
Accept a pre-built dispatcher via a constructor keyword
maxisbey
committed
Restore full coverage after the BaseSession deletion
maxisbey
committed
Tighten dispatcher abandon-path writes and response invariants
maxisbey
committed
Harden ClientSession enter/exit and fault delivery
maxisbey
committed
Pin initialize-abandon suppression and tidy the interaction suite
maxisbey
committed
Exercise the standalone SSE teardown window deterministically
maxisbey
committed
Document the dispatcher behavior changes in the migration guide
maxisbey
committed
Tighten comments and docstrings across the dispatcher swap
maxisbey
committed
Remove the client-side related_request_id surface
maxisbey
committed
Make ClientRequestContext a concrete class
maxisbey
committed
Synthesize request ids in DirectDispatcher
maxisbey
committed
Raise CONNECTION_CLOSED for requests sent after the connection closed
maxisbey
committed
Make the late-response-ignored pin falsifiable
maxisbey
committed
Trim the dispatcher-swap migration notes
maxisbey
committed
Close the write stream only after the task-group join
maxisbey
committed
Pin client request concurrency in both directions
maxisbey
committed
Tidy naming and doc nits from review
maxisbey
committed

Commits on Jun 15, 2026

Trim the ClientSession migration section to behavior-relevant changes
maxisbey
committed
Harden ClientSession/dispatcher lifecycle and error handling
maxisbey
committed
Heal 3.11 coverage tracing in the new dispatcher tests
maxisbey
committed
Heal 3.11 coverage tracing at JSONRPCDispatcher.run() exit
maxisbey
committed

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