Advantage of using async socket server

Question

In which situration should we use an async socket (either Tcp or Udp) server over sync socket server?

If it\'s in client side, I understand that we used to use async so

Answer 1

On the server side, it's important to allow parallel processing of clients. If you're processing a large request for one client, you don't want a second client's connect request to time out. This does not mean that you have to use asynchronous methods though. You could easily create a separate thread for each connected client, and accept new clients in the main thread, all synchronously (and for Udp you could use queue the processing of each message in a thread from the ThreadPool).

The asynchronous socket methods already take care of the parallel-ness though (also by using separate threads), so it's a good technique to keep your server running smoothly.