[tor-dev] use tor controller to detect circuit/path change

[meejah at meejah.ca]

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Damian Johnson <atagar at torproject.org> writes:

>> I'm wondering whether it is possible to use Tor controller to
>> detect when the circuit/path in use is changed and obtain the list
>> of IP addresses of those relay nodes.

> - txtorcon (https://txtorcon.readthedocs.org/en/latest/) - controller
> library for twisted apps

Specifically, try this example:

   https://github.com/meejah/txtorcon/blob/master/examples/stream_circuit_logger.py

You'll be interested in the last hop in the "path" attribute of
Circuit objects. If you want to know which streams are exiting via
which circuits, listen for STREAM events and look at the Circuit to
which they're connected.

- -- 
meejah
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