CancellationHelper.cs

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using System.Threading;
using System.Threading.Tasks;
 
namespace System.Net.Http;
 
internal static class CancellationHelper
{
    private static readonly string s_cancellationMessage = new OperationCanceledException().Message;
 
    internal static bool ShouldWrapInOperationCanceledException(Exception exception, CancellationToken cancellationToken)
    {
        if (!(exception is OperationCanceledException))
        {
            return cancellationToken.IsCancellationRequested;
        }
        return false;
    }
 
    internal static Exception CreateOperationCanceledException(Exception innerException, CancellationToken cancellationToken)
    {
        return new TaskCanceledException(s_cancellationMessage, innerException, cancellationToken);
    }
 
    private static void ThrowOperationCanceledException(Exception innerException, CancellationToken cancellationToken)
    {
        throw CreateOperationCanceledException(innerException, cancellationToken);
    }
 
    internal static void ThrowIfCancellationRequested(CancellationToken cancellationToken)
    {
        if (cancellationToken.IsCancellationRequested)
        {
            ThrowOperationCanceledException(null, cancellationToken);
        }
    }
}