Jacob was an open source protocol framework written in Java. There are a few publications which explain, among other things, the ideas behind it. For example, have a look at the following.
Some of my publications are available at my publications page.
The old project home page is still available at http://www.tml.hut.fi/Research/TeSSA/Old_pages/Jacob/jacob3.html
The jacob source code is available at sourceforge.
See
http://sourceforge.net/projects/jacob/
This page is maintained by
Pekka Nikander, e-mail:
Pekka.Nikander@hut.fi
This page has been updated Sep 29 2002.
URL: http://www.tcm.hut.fi/~pnr/jacob/