Re: Re: Re: how to prevent Tor from auto-buiding circle?

[xiangw@xxxxxxxxxxxx]

Thx a lot for the information, we are just about to ignore the auto-
builded circuits, as you have mentioned in the last letter. Besides, 
the option "__LeaveStreamsUnattached" is no doubt a great help to us, 
which we haven't figured out so far. But since this option is not 
LISTED in any official documents, ie, "tor-reference.html", and can 
only be found in a complementary note to the discription of 
ATTACHSTREAM, I guess there must be some HIDDEN 
configuration lists of tor. Could you please help us out about 
this?

Best Wishes!
Erik

> On 12/8/06, xiangw@xxxxxxxxxxxx <xiangw@xxxxxxxxxxxx> wrote:
> > i c, just ignore. Thanks very much.
> >
> > Yours,
> > jojo
> >
> > > Thus spake xiangw@xxxxxxxxxxxx (xiangw@xxxxxxxxxxxx):
> > >
> > > >     Hi,guys. I'm working on my own Tor controller recently. I
> > > want to
> > > > do full controlling on circle and stream, but i found that Tor
> > > keep
> > > > auto-buiding circles. How to prevent Tor from doing it?
> > >
> > > Unfortunately I think there is no tor option for this. In my 
> case I
> > > ignore the circuit extends I didn't cause. You can build a 
> table/list> > by watching for 250 EXTENDED ([\d]+) right after you 
> send the
> > > EXTEND.. Any events for other circuit IDs you can then ignore.
> > >
> > > However, I'm guessing you want to completely avoid touching 
> nodes that
> > > are known to be unreachable from your location? Is it bad if you
> > > try to connect to firewalled nodes?
> > >
> > >
> > > --
> > > Mike Perry
> > > Mad Computer Scientist
> > > fscked.org evil labs
> > >
> > >
> >
> 
> If you want to make sure you have complete control over how streams
> are attached to circuits, you also need to set
> "__LeaveStreamsUnattached" to 1, either when your controller 
> starts or
> in the torrc file. And then use the SETEVENTS controller command to
> subscribe to STREAM events, and attach new streams to your own
> circuits as they arrive.
> 
> About preventing the auto-building of circuits - you'll have to modify
> Tor source to do so. I think the most minimalist change that you can
> make to achieve this is to edit circuituse.c and change "#define
> MAX_UNUSED_OPEN_CIRCUITS 12" to "#define MAX_UNUSED_OPEN_CIRCUITS 0".
> (Let's hope I don't get laughed / screamed at if this turns out to be
> a bad idea.)
> 
> - John
> 
>