How come I get "address already in use" from bind()?

  You get this when the address is already in use.  (Oh, you figured
  that much out?)  The most common reason for this is that you have
  stopped your server, and then re-started it right away.  The sockets
  that were used by the first incarnation of the server are still
  active.  This is further explained in ``2.7 Please explain the
  TIME_WAIT state.'', and ``2.5 How do I properly close a socket?''.