The SSE endpoints registered their bridge callbacks once behind a
_callbacks_registered latch. Anything that cleared the bridge's push
callbacks therefore killed the stream permanently — the latch stayed True
while the subscriptions were gone, so no later stream open repaired them.
Cache the callback objects instead and re-register them each time a stream
opens. Bridge registration is idempotent, so the repeat costs nothing while
a subscription that went missing is repaired rather than leaving the stream
silently dead until the daemon restarts.
The clear that made this reachable is fixed in openhop_core, where the
frame server now retracts only its own subscriptions instead of clearing
every callback on each companion client connection. This half is the
belt-and-braces: clear_push_callbacks() remains a legitimate full reset,
and the stream should survive one.
agessaman
ab7479c55c