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Re: Issue about selection of Tor relays when using the default torrc configuration



Hello all
I am running tor-0.2.1.15-rc ; source downloaded from the tor website . For my purpose I am tapping into the function circuituse.c:circuit_has_opened() to determine which relays are being used in a stream (assuming only one stream is using Tor). However the IP address of the relays I see here don't match the list of relays for the stream when I determine them using 'get_info stream-status'. Which one should I rely upon to determine which circuit is being used ? Common sense tells me to rely on 'get_info stream_status'. However , I see the client crash at times when I connect to the control port .

Thanks
Sambuddho

On Sun, May 31, 2009 at 02:59:01AM -0400, Sambuddho Chakravarty wrote:
Thanks for you help. However , is there no way that I can cause tor client to reload a new set of entry guard nodes ? I have tried both NEWNYM and HUP signals through *nc* to communicate to tor controller . However , in both cases only a small set of (infact 3) entry guards are selected.

Yes, that's a feature. Otherwise you'll open yourself up to a variety
of attacks:
https://wiki.torproject.org/noreply/TheOnionRouter/TorFAQ#EntryGuards

If you want to turn off that defense, set "UseEntryGuards 0" in your
torrc.

Or you can delete them from your $datadir/state file while Tor is off,
but that's probably more likely to cause problems.

Also , in continuation to my previous email , where can I download the
torctl python libraries from ?

You can get it from SVN:
https://svn.torproject.org/svn/torctl/trunk/python/

Do I need the library or I can just make
do by sending text command to the tor controller to play around and test
with ?

Playing around and testing with telnet or nc is a fine start. You only
need the torctl library if you find that playing around by hand is
insufficient for your needs.

--Roger