Re: [tor-talk] Help wanted: bug when using a public relay as a bridge?

[Geoff Down <geoffdown@xxxxxxxxxxxx>]

On Wed, Jul 31, 2013, at 05:37 PM, Roger Dingledine wrote:
> Long ago we had a bug where your Tor client would crash or assert
> if you configure a public relay to be your bridge:
> https://trac.torproject.org/projects/tor/ticket/1776
> 
> We think we accidentally got rid of the problem when we switched to the
> microdescriptor design in Tor 0.2.3.x.
> 
> I've asked Nick and Andrea to spend some more time tracking it down,
> but to give us a sense of how important it is: a) do crashes happen
> still? and b) how about when you use old-style descriptors rather than
> microdescriptors?
> 
> So if you want to help us out,
> 
> 1) Grab Tor 0.2.4.15-rc or later, and add some lines like
> 
>   UseBridges 1
>   Bridge 128.31.0.34:9101
> 
> to your torrc.
> 
> (in this case you'd be adding my directory authority, moria1, as your
> bridge. By all means feel free to pick another public relay instead.
> If you experience connectivity problems, check to see if the relay you
> picked is still up before reporting them).
> 
> In theory everything will work beautifully. If you get an assert error
> or seg fault, we want to know! Add a comment to bug 1776, with details
> like your Tor version.
> 
> 2) If step one works without any problems, try adding
> 
>   UseMicrodescriptors 0
> 
> to your torrc as well as the above bridge lines. This will ask your
> Tor client to go back to the original relay descriptor approach, which
> we think might still trigger the bug. If you get an assert error or
> seg fault, please let us know on bug 1776 (with details like your Tor
> version).
> 
> Thanks!
> --Roger

Plus you can't help with this if you are running a relay:
"Failed to parse/validate config: Servers must be able to freely connect
to the rest of the Internet, so they must not set UseBridges."

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