The close code the relay sends the browser when a relay session reaches its lifetime
(REALTIME_RELAY_SESSION_LIFETIME_SECONDS, or a shorter MaxSessionSeconds). A private-use code (RFC 6455
ยง7.4.2), so a client tells the time limit from a dropped connection: it ends the call with its own message instead of
trying to resume on a session that is gone.
The close code the relay sends the browser when a relay session reaches its lifetime (REALTIME_RELAY_SESSION_LIFETIME_SECONDS, or a shorter
MaxSessionSeconds). A private-use code (RFC 6455 ยง7.4.2), so a client tells the time limit from a dropped connection: it ends the call with its own message instead of trying to resume on a session that is gone.