How can I accept() multiple sockets using Overlapped IO?

[john_n]

I am having a problem understanding how can I accept multiple sockets (quickly) when using Overlapped IO (with Completion Routines).

So in my server this is the pseudo code:

while(true)
{
    sock = accept();
    WSARecv(sock, callback_function);
    Wait(); // need to make the calling thread alertable
}

callback_function()
{
    // process data here
}

So as you can see I can only accept one socket, and then I enter a wait state, and only when sock receive something that I will be able to accept another socket!

[VictorN]

If you mean that your callback requires much time to process socket connection then try moving it to a worker thread.

[john_n]

If you mean that your callback requires much time to process socket connection then try moving it to a worker thread.

No, I mean that in order for Windows to be able to call my callback, my thread must wait, and so I can't accept anymore sockets until the wait state is over, which only happens after Windows call my callback (and my callback returns of course).

[VictorN]

Have a look at this WSARecv article in MSDN and at the code example in there.

[2kaud]

Also try
https://msdn.microsoft.com/en-us/lib...=vs.85%29.aspx
https://msdn.microsoft.com/en-us/lib...=vs.85%29.aspx