public async Task <bool> MoveNext(CancellationToken token)
{
using (call.RegisterCancellationCallbackForToken(token))
{
var result = await call.ReadMessageAsync().ConfigureAwait(false);
this.current = result;
return(result != null);
}
}
public async Task <bool> MoveNext(CancellationToken token)
{
if (token != CancellationToken.None)
{
throw new InvalidOperationException("Cancellation of individual reads is not supported.");
}
var result = await call.ReadMessageAsync().ConfigureAwait(false);
this.current = result;
return(result != null);
}
public async Task <bool> MoveNext(CancellationToken token)
{
var cancellationTokenRegistration = token.CanBeCanceled ? token.Register(() => call.Cancel()) : (IDisposable)null;
using (cancellationTokenRegistration)
{
var result = await call.ReadMessageAsync().ConfigureAwait(false);
this.current = result;
return(result != null);
}
}