在进行多个连接时，如何在C中设置套接字超时?

I'm writing a simple program that makes multiple connections to different servers for status check. All these connections are constructed on-demand; up to 10 connections can be created simultaneously. I don't like the idea of one-thread-per-socket, so I made all these client sockets Non-Blocking, and throw them into a select() pool.I'm writing a simple program that makes multipl