Async connect and disconnect with epoll (Linux)

Question

I need async connect and disconnect for tcp client using epoll for Linux. There are ext. functions in Windows, such as ConnectEx, DisconnectEx, AcceptEx, etc... In tcp serv

Answer 1

I have tried the Sonny's solution and the epoll_ctl will return invalid argument. So i think maybe the right way to do this is as follow:

1.create socketfd and epollfd

2.use epoll_ctl to associate the socketfd and epollfd with epoll event.

3.do connect(socketfd,...)

4.check the return value or errno

5.if errno == EINPROGRESS, do epoll_wait