mcp: export ErrSessionMissing for session termination detection #719
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Export ErrSessionMissing as a sentinel error that clients can use to detect when a server has terminated or lost their session. This allows users to implement session recovery logic, creating a new ClientSession when needed. Updates modelcontextprotocol#715
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@dpasiukevich, please let me know if you have any opinion on this PR or API. |
jba
approved these changes
Dec 12, 2025
markus-kusano
approved these changes
Dec 12, 2025
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I've did some experiments. It seems like if client times out (e.g. by cancelled context) or server terminated a session (e.g. via by setting StreamableHTTPOptions.SessionTimeout). In all these cases |
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Thanks for testing, @dpasiukevich! In that case, let's hold off on this until there's a clearer need. |
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Export ErrSessionMissing as a sentinel error that clients can use to detect when a server has terminated or lost their session.
This allows users to implement session recovery logic, creating a new ClientSession when needed.
Updates #715