Check for sentinel value when setting HTTP/3 error code #57976
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If no error code has been set, `IProtocolErrorFeature.Error` will be `-1`. If we pass that through verbatim, it will be caught by validation in the setter (ironically, of the same property on the same feature object), resulting in an exception and a Critical (but apparently benign) log message. Fixes dotnet#57933
amcasey
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halter73,
BrennanConroy,
JamesNK and
mgravell
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ghost
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JamesNK
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This was referenced Sep 20, 2024
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This was referenced Jul 22, 2025
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chore: Bump Microsoft.AspNetCore.Components.WebAssembly.DevServer and 6 others
Markinatorina/MSAVA#7
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This was referenced Jul 29, 2025
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Check for sentinel value when setting HTTP/3 error code
Detect when
IProtocolErrorFeature.Erroris unset and apply a default value.Description
If no error code has been set,
IProtocolErrorFeature.Errorwill be-1. If we pass that through verbatim, it will be caught by validation in the setter (ironically, of the same property on the same feature object), resulting in an exception and a Critical (but apparently benign) log message.Backport of #57934 (for #57933)
Customer Impact
When a connection times out, there's a critical log message. We're also not convinced the connection is properly cleaned up.
Subsequent requests should be unaffected.
HTTP/3 only.
Regression?
Regressed since 8.0 in #55282.
Risk
Replacing an invalid value (which will throw either in our code or in System.Net.Quic) with a valid code is a net improvement.
Verification
Packaging changes reviewed?