title: ZeroMQ: what is a difference between zmq_recv() v/s zmq_msg_recv() calls?
body: <p>Is there a difference between <code>zmq_recv</code> and <code>zmq_msg_recv</code> besides the structure they return? Which one should be used with a <code>ZMQ_PAIR</code> socket?</p>
  
  <hr>
  
  <p>This question is for ZeroMQ version 4.2.1.</p>