Fix detached datachannels handling #2976
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Additional details and impacted files@@ Coverage Diff @@
## master #2976 +/- ##
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- Coverage 77.93% 77.90% -0.03%
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Files 89 89
Lines 10526 10523 -3
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- Hits 8203 8198 -5
- Misses 1834 1837 +3
+ Partials 489 488 -1
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Sean-Der
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Dec 24, 2024
#2696 introduced removing datachannels from the sctptransport for better garbage collection. That PR introduced a race condition for data channels created before connection establishment. When an out of band negotiated data channel, created before peerconnection establishment is detached, there's a race between the data channel being removed from `r.dataChannels` and it being copied in to the existing data channel slice in the acceptDataChannels goroutine. This PR fixes this race by copying the slice before any datachannels could be detached.
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#2696 introduced removing datachannels from the sctptransport for better garbage collection.
That PR introduced a race condition for data channels created before connection establishment. When an out of band negotiated data channel, created before peerconnection establishment is detached, there's a race between the data channel being removed from
r.dataChannelsand it being copied in to the existing data channel slice in the acceptDataChannels goroutine.This PR fixes this race by copying the slice before any datachannels could be detached.