Question

I’ve been looking at numerous examples such as this, this, and this but none of them seem to work. I’m not sure what’s wrong but for each example I’ve tried the wait is just ignored and I just get the standard unhandled socket exception in approximately 1 second, regardless of the specified wait time. No connection could be made because the target machine actively refused it.

Here’s an excerpt to help understanding:

public void Connect(string host, int port)
{
    tcpClient.BeginConnect(host, port, OnConnect, null);
}

private void OnConnect(IAsyncResult async)
{
    tcpClient.EndConnect(async);
}

Been trying a bunch of different examples but for all of them my client application either just failsfast after a second or throws a socket exception. Would a try-catch be a better solution here and just avoid using WaitHandles?

Answer 1

the error

No connection could be made because the target machine actively
refused it.

usually means that there is nothing running on that port on the remote machine, or there is a firewall somewhere blocking the request.

there is a

tcpClient.SendTimeout

and tcpClient.ReceiveTimeout to answer your specific question, but it probably isn’t your issue here.