(PECL zmq >= 1.0.4)
ZMQSocket::disconnect — Disconnect a socket
   Disconnect the socket from a previously connected remote endpoint. The endpoint is defined in format
   transport://address where transport is one of the following: inproc, ipc, tcp, pgm or epgm.
  
dsn
       The connect dsn, for example transport://address.
      
Returns the current object. Throws ZMQSocketException on error.
