libtmux.control:open-connection

Attach a separate owned control connection to a captured SESSION. CLIENT supplies the core endpoint and authority. Startup preflights the target and requires the live daemon to be >=3.8. TIMEOUT bounds startup admission and supervised execution; platform preparation and cleanup add caller wall time. REQUEST-LIMIT includes active and queued work. Events drop oldest entries at EVENT-LIMIT or EVENT-BYTE-LIMIT and report loss. REPLY-BYTE-LIMIT bounds each request's retained output; overflow closes the connection with a cause. This call blocks until ready or failed. All limits must be positive integers except the nonnegative real TIMEOUT. No daemon is started or terminated. Attachment preserves the stored session environment; native attach hooks and server lifecycle policies still apply. Readiness checks the observed daemon witness after attachment, so a refused candidate may have appeared briefly.