flush now rejects for writes an ended session forgot. acceptConnect on a
connected session delegates to the new answerRepeatedConnect, so a repeated
Connect re-sends the Accept still owed, or an Ack once it was acknowledged,
and queues nothing; the operation service no longer builds a session per
Connect. The operation service dropped sessions never, so 64 abandoned
clients locked every new one out: a session idle for sessionIdleTimeoutMs
(default 30 s, the document server's session_idle_timeout) is now dropped.
A request whose handler rejects ends its session like a transport refusal,
so the invoker learns promptly and a retransmit is not acknowledged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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