public static Task SendFrameAsync(
this NetMQSocket socket,
byte[] data,
bool more = false,
CancellationToken cancellationToken = default(CancellationToken)
)
{
if (NetMQRuntime.Current == null)
{
throw new InvalidOperationException("NetMQRuntime must be created before calling async functions");
}
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
socket.AttachToRuntime();
if (socket.TrySendFrame(TimeSpan.Zero, data, more))
{
return(Task.CompletedTask);
}
TaskCompletionSource <object> source = new TaskCompletionSource <object>();
cancellationToken.Register(() =>
{
socket.SendReady -= Listener;
source.TrySetCanceled();
});
void Listener(object sender, NetMQSocketEventArgs args)
{
if (socket.TrySendFrame(TimeSpan.Zero, data, more))
{
socket.SendReady -= Listener;
source.TrySetResult(null);
}
}
socket.SendReady += Listener;
return(source.Task);
}