The MCP server builds a Nextcloud client per session and closes it only
when the session ends. The clinical assistant replaced its cached session
every time the ten-minute TTL lapsed but never ended the old one, so each
abandoned client held its Nextcloud connections open. The production MCP
container was holding 708 sockets in CLOSE-WAIT against a 1024 descriptor
ceiling, roughly 300 from the point where every clinical search fails.
Expired and server-rejected sessions are now deleted. Session reuse is
unchanged: a live session is still shared across calls, since closing one
still in use would force a re-initialize on every search.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
