def replier(address,callback,message_type):
return Replier(address,callback,message_type)<EOL>
Creates a replier binding to the given address send replies.
The callback is invoked for every request received.

    Args:
        - address: the address to bind the REP socket to.
        - callback: the callback to invoke for every message. Must accept 2 variables - message and the replier
        - message_type: the type of message to receive