How to wait for a transmission's completion? about asynctcpclient

[ygoe]

The AsyncTcpClient.WaitAsync method waits for data to be available in the receive buffer. It doesn't wait until you processed it. If you want that, you should set a signal when you're done, at the end of your ReceivedCallback handler. You could use a TaskCompletionSource for that.

[ygoe]

You're calling AsyncTcpClient.WaitAsync and expect to wait until you finished processing the received data. That's the wrong method. You're waiting for new data to be available. Instead of this you should wait for your own event.

TaskCompletionSource<T> is a class that lets you create tasks you can wait on. Later, you can explicitly complete these tasks "from the outside", by calling a method like TrySetResult. Whoever waits for this task can then continue. It's to common pattern to asynchronously wait for something you do. It's also used in AsyncTcpClient.WaitAsync to wait for either new data or a closed connection.

[artshade]

The AsyncTcpClient.WaitAsync method waits for data to be available in the receive buffer. It doesn't wait until you processed it. If you want that, you should set a signal when you're done, at the end of your ReceivedCallback handler. You could use a TaskCompletionSource for that.

Thank you, but how to wait for TaskCompletionSource if WaitAsync returns immediately when any data was received?

Currently, this one works:

ct1 = new CancellationTokenSource(1000);
this.asyncTCPClient.WaitAsync(ct1.Token); // Wait for any response available
if (!ct1.IsCancellationRequested) // If received something
{
    ct1 = new CancellationTokenSource(1000);
    while (responseLength != expectedResponseLength) // Wait for all requested data transferred
    {
        if (ct1.IsCancellationRequested) // If full data transfer timed out
        {
            fullDataTimeout= true; // Set flag of data's timeout
            break;
        }
        Thread.Sleep(100); // To escape a busy loop issue
    }
}
else
    connectionTimeout= true; // Set flag of connection's timeout

It works. However, it seems like it is not the best solution. Sorry, but what did you mean by TaskCompletionSource?