The #95 telemost fix widened three global windows (control pong 15s->45s,
smux keepalive 30s->120s, tunnel ack 15s->90s). These live in shared
packages, so they also slowed dead-link detection on jitsi/datachannel:
a genuinely dead session stayed alive up to 120s before reconnecting,
which presented as the link going down and not recovering.
Restore the conservative defaults globally and apply the relaxed windows
only when the transport implements transport.ControlPlane (vp8channel/
goolom), where KCP batching + SFU publisher-PC renegotiation legitimately
go silent for ~25-30s. Conventional carriers reconnect promptly again.
inject a clean VP8 keyframe every ~2s during bulk so the SFU keeps
forwarding the track instead of stalling after its decode timeout.
add RTCP interceptors and IPv4-only ICE, priority control/data mux,
publisher PC reconnect with stable control epoch, and longer smux
keepalive/liveness windows to survive the reconnect gap
server.go and client.go each carried byte-identical copies of
smuxConfig (~20 lines), setupCipher (~18 lines), and the health
bookkeeping pair recordSession/Pong/Missed/Unhealthy/Reconnect plus a
private healthMu+status+notifyHealth scaffold. Same code, twice.
Add internal/runtime exposing:
- SetupCipher, SmuxConfig, MaxPayload — common construction helpers,
ErrKeyRequired/ErrKeySize re-exported from runtime so existing
errors.Is checks on server.ErrKeyRequired etc. keep working.
- HealthTracker — nil-safe wrapper around control.Status with
RecordSession/Pong/Missed/Unhealthy/Reconnect that publishes through an
OnHealth callback supplied at construction.
server and client now hold a *runtime.HealthTracker instead of their own
mu+status+notify scaffolds. recordX methods on Server/Client are now
one-liners that forward to the tracker. smuxConfig(0) replaces the prior
variadic smuxConfig() in test call sites; nil-safe Status()/update() on
HealthTracker means tests that build raw &Server{}/&Client{} no longer
need to wire up a tracker for the records to be no-ops.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
nori