title: Can socket client and server on the same computer bind to same port?
body: <p>In my case, I need to run a socket client and server on the same computer.</p>
  
  <p>The udp socket client needs to bind local port to 1234, and will communicate with 
  a socker server on remote side.
  While an udp socket server in the same computer needs to bind local port to 1234 as well, and will communicate with a socket client on remote side as well.</p>
  
  <p>Is it feasible? Any potential issue or notice?
  Thanks!</p>