xchat adhearsion asterisk1.4 ruby-tcp
http://www.macports.org/
https://github.com/xchataqua/xchataqua/tree/master/iOS/Sources
http://en.wikipedia.org/wiki/XChat
http://www.adhearsion.com/
http://www.sitepoint.com/ruby-tcp-chat/
http://en.wikipedia.org/wiki/Comparison_of_instant_messaging_protocols
http://tx.pignata.com/2012/11/multicast-in-ruby-building-a-peer-to-peer-chat-system.html