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Fix HttpConnectionPool timers race on disposal #72615

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Merged
CarnaViire merged 4 commits into from
Jul 22, 2022
Merged

Fix HttpConnectionPool timers race on disposal #72615

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403dcb8
Access _authorityExpireTimer and _altSvcBlocklistTimerCancellation un…
CarnaViire Jul 21, 2022
a5fed6b
Early return
CarnaViire Jul 21, 2022
98add00
Fix timeout test assert
CarnaViire Jul 21, 2022
61f5ac2
Fix lock-if inversion
CarnaViire Jul 21, 2022
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Early return
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@CarnaViire
CarnaViire committed Jul 21, 2022
commit a5fed6b829c18a0951679aeb3ed68112868fea58
10 changes: 8 additions & 2 deletions src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/HttpConnectionPool.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1184,7 +1184,13 @@ internal void HandleAltSvc(IEnumerable<string> altSvcHeaderValues, TimeSpan? res

lock (SyncObj)
{
if (_authorityExpireTimer == null && !_disposed) // _authorityExpireTimer is nulled out on disposal
if (_disposed)
{
// avoid creating or touching _authorityExpireTimer after disposal
return;
}

if (_authorityExpireTimer == null)
{
var thisRef = new WeakReference<HttpConnectionPool>(this);

Expand Down Expand Up @@ -1213,7 +1219,7 @@ internal void HandleAltSvc(IEnumerable<string> altSvcHeaderValues, TimeSpan? res
}
else
{
_authorityExpireTimer?.Change(nextAuthorityMaxAge, Timeout.InfiniteTimeSpan);
_authorityExpireTimer.Change(nextAuthorityMaxAge, Timeout.InfiniteTimeSpan);
}

_http3Authority = nextAuthority;
Expand Down