[release/7.0] Swallow ObjectDisposedException when aborting QuicStream from CancellationAction #75179
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Tagging subscribers to this area: @dotnet/ncl Issue DetailsBackport of #74634 to release/7.0 /cc @rzikm Customer ImpactTestingRiskIMPORTANT: Is this backport for a servicing release? If so and this change touches code that ships in a NuGet package, please make certain that you have added any necessary package authoring and gotten it explicitly reviewed.
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carlossanlop
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approved. stability of new feature area. |
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The PR this depends on (#75192) has been merged into release/7.0. removing the no-merge and blocked labels. |
karelz
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liveans
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Sep 8, 2022
karelz
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Sep 8, 2022
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Approved, signed off, CI is green (failures seem unrelated), and it's unblocked now. Ready to merge. |
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Backport of #74634 to release/7.0
Fixes #73688
This change depends on #75192 (which has been already merged into release/7.0).
/cc @rzikm
Customer Impact
In certain situations, aborting QuicStream operations using
CancellationTokenSource.CancelAftermay cause an exception to be thrown inside ValueTask continuation processing code. The end result is crashing the process on unhandled exception. This PR makes sure we catch and swallow the exception.The exception is not a symptom of a deeper problem, since #75192, the race which causes the exception is harmless.
Discovered in HTTP/3 stress runs and also in CI.
Testing
CI functional tests are passing, also verified manually with local changes to make the race more frequent.
Risk
Low, System.Net.Quic is still in preview.