[Sugar-devel] Sugar collaboration monitoring, with dbus-monitor

[James Cameron]

Sugar collaboration is implemented using Telepathy.

Telepathy provides a set of D-Bus services on the user session bus.

Telepathy libraries are called by Sugar, and the libraries translate
invocations to remote procedure calls on D-Bus.

Collaboration can be monitored and debugged using dbus-monitor and
tcpdump.  dbus-monitor is run as the Sugar user in order to access the
user session bus.

Attached diagram shows a monitoring method.  In this diagram are two
system instances of Sugar Live Build, and a developer's workstation.

The setup order is;

- on each of the two systems, start Terminal activity, install and
  enable sshd, install screen, and start "screen -L",

- on the developer's workstation, start two Terminal apps, ssh into
  the two systems, and then use "screen -x" to share the screen,

- on each screen, start dbus-monitor,

- close the Terminal activity if necessary; the terminal will continue
  to exist on the system for as long as the ssh connection persists,

- begin testing collaboration.

Network packet monitoring can be added by starting a new window in
screen, and running tcpdump.

-- 
James Cameron
http://quozl.netrek.org/
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