public static void SetupCallback(SocketAsyncEventArgs e)
{
ReusableTaskCompletionSource tcs = new ReusableTaskCompletionSource();
e.UserToken = tcs;
e.Completed += CompletionDelegate;
}
private static void CompletionCallback(object sender, SocketAsyncEventArgs e)
{
ReusableTaskCompletionSource tcs = (ReusableTaskCompletionSource)e.UserToken;
if (e.SocketError != SocketError.Success)
{
tcs.SetException(new SocketException((int)e.SocketError));
}
else
{
tcs.SetResult();
}
}