DJabberd 介绍
DJabberd is a high-performance, scalable, extensible Jabber/XMPP server
framework. While it comes with an example server, it’s really a set of
classes for you to build your own Jabber server without understanding Jabber.
Instead of working with XML and protocol-specific details, you subclass parts
and work with sane objects and data structures and let DJabberd do all the
ugly work.