How to handle asynchronous socket receiving in C++?

I'm currently using a thread to handle Connect and Send calls asynchronously. This is all working fine, but now I want to make receiving asynchronous too. How should I receive data without pausing the whole queue whil开发者_如何转开发e waiting for data? The only solution I can think of right now is a second thread.

Look into non-blocking sockets and polling APIs like select(2)/poll(2)/epoll(4)/kqueue(2).

Specifically in C++, look into boost::asio.

Depending on what you're doing, non-blocking I/O with select may be the answer.

Take a look at this tutorial.