Multi-threaded console-based 2-way instant messaging system based on NNG scalability protocols.
messenger(url)a URL to connect to, specifying the transport and address as a character string e.g. 'tcp://127.0.0.1:5555' (see transports).
Invisible NULL.
Type outgoing messages and hit return to send.
The timestamps of outgoing messages are prefixed by > and that of
incoming messages by <.
:q is the command to quit.
NOTE: This is currently a proof of concept and should not be used for critical applications.