Mwalk is a collection of java applications and perl
scripts which re-create a global view of a multicast session from
mtrace and RTCP logs. Once the session tree is constructed,
a number of plug-in classes, visitors, can be employed to
gather statistics while the tree is traversed or walked.
New visitors can easily be created by extending existing classes, and
visitors can be combined to setup state within the tree that is later
collected and analyzed.