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Use Task.FromCanceled<TResult>() on NETSTANDARD1_3 

Task.FromCanceled<int>(cancellationToken) can be used on
NETSTANDARD1_3 in TaskUtilities.GetCancelledZeroTask().
This commit is contained in:
Justin Van Patten 2016-04-26 00:33:53 -07:00
parent 0a21b94609
commit 68f14c06cb
2 changed files with 6 additions and 3 deletions
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2
src/Microsoft.AspNetCore.Server.Kestrel/Http/FrameRequestStream.cs
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@ -165,7 +165,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Http
case FrameStreamState.Open:
if (cancellationToken.IsCancellationRequested)
{
return TaskUtilities.GetCancelledZeroTask();
return TaskUtilities.GetCancelledZeroTask(cancellationToken);
}
break;
case FrameStreamState.Closed:

7
src/Microsoft.AspNetCore.Server.Kestrel/Infrastructure/TaskUtilities.cs
View File

@ -26,12 +26,15 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Infrastructure
#endif
}
public static Task<int> GetCancelledZeroTask()
public static Task<int> GetCancelledZeroTask(CancellationToken cancellationToken = default(CancellationToken))
{
// Task<int>.FromCanceled doesn't return Task<int>
#if NETSTANDARD1_3
return Task.FromCanceled<int>(cancellationToken);
#else
var tcs = new TaskCompletionSource<int>();
tcs.TrySetCanceled();
return tcs.Task;
#endif
}
}
}