Cherry-pick of the v8.0.2 fix to the 7.0 release line. Two edge-cluster
regressions surface when validating an RTMP origin/edge setup:
- **HTTP-FLV play on edge always 404'd.**
`SrsHttpStreamServer::assemble()` registered the dynamic matcher only
when the mux cast was `NULL` (inverted guard), so the matcher was never
wired up. On edge the FLV mount is created lazily by the dynamic
matcher, so every HTTP-FLV client got 404. Invert the guard to register
when the mux is valid, mirroring the destructor.
(`trunk/src/app/srs_app_http_stream.cpp`)
- **RTMP players that join an edge stream after the first player fail to
decode.** After v7.0.94 (#4513) stopped creating `SrsOriginHub` on edge,
the `hub_active` gate in `SrsLiveSource::consumer_dumps()` always
evaluated false on edge. That gate guards the dump of cached
`onMetaData` + AVC sequence header + AAC sequence header + GOP cache to
a new consumer. Result: the first player attaches before the edge-pull
starts and gets headers via the live fan-out, but every subsequent
player gets coded payload with no codec config and ffmpeg aborts with
`dimensions not set` / `Could not write header`. Fall back to the meta
cache state when `hub_` is `NULL`, so the dump path runs once the
edge-pull has populated the cache.
(`trunk/src/app/srs_app_rtmp_source.cpp`)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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