title: Async connect and disconnect with epoll (Linux)
body: <p>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 server standard accept function is working, but in tcp client doesn't working connect and disconnect... All sockets are nonblocking. </p>
  
  <p>How can I do this?</p>
  
  <p>Thanks!</p>