Initial import of ap-jk-3.2.1, the next generation connector for accessing

Initial import of ap-jk-3.2.1, the next generation connector for accessing
Jakarta Tomcat of JServ from Apache.

Some more information:

What is mod_jk?

mod_jk is a replacement to the elderly mod_jserv. It is a completely
new Tomcat-Apache plugin that handles the communication between
Tomcat and Apache

Why mod_jk?

Several reasons:

mod_jserv was too complex. Because it was ported from Apache/JServ,
it brought with it lots of JServ specific bits that aren't needed
by Apache.

mod_jserv supported only Apache. Tomcat supports many web servers
through a compatibility layer named the jk library. Supporting two
different modes of work became problematic in terms of support,
documentation and bug fixes. mod_jk should fix that.

The layered approach provided by the jk library makes it easier to
support both Apache1.3.x and Apache2.xx.

Better support for SSL. mod_jserv couldn't reliably identify whether
a request was made via HTTP or HTTPS. mod_jk can, using the newer
Ajpv13 protocol.