The media relay only deadlined the wait for upstream response headers. Once
headers arrived the timer stopped, so an upstream that answered and then sent
nothing held both the client response and the upstream socket open for as long
as the camera host allowed. The declared Content-Length ceiling was the only
body bound, and a chunked or length-less body had none.
A 30-second idle deadline now measures the gap between upstream chunks and
tears the stream down through the existing release path. Because a paused pipe
also stops upstream bytes arriving, the deadline reschedules itself whenever
the response is still waiting to drain, so a viewer on a slow link is not read
as a dead camera. Live feeds that keep delivering frames are unaffected.
Supersedes #438 by @rileygramlich, ported onto the current component layout with fixes from review.
Verified before merge: format, package boundaries, unit suite, build, and the browser tracking suite; a browser harness for the change where one applies; adversarial review applied.
Co-authored-by: rileygramlich <[email protected]>