[tor-dev] channel_t to IP Address

[Andrea Shepard]

On Thu, Jul 24, 2014 at 01:55:43PM +0100, Gareth Owen wrote:
> Andrea
> 
> Thanks for taking the time to reply and for the advice.  I have just this
> second discovered this method:
> 
> TO_OR_CIRCUIT(circ)->p_chan->get_remote_descr(TO_OR_CIRCUIT(circ)->p_chan,
> 0)
> 
> which returns the endpoint as a string.  I wonder, is this safer/future
> proof or should this approach be discouraged?

Don't call channel methods directly like that.  Do call something like
channel_get_actual_remote_descr(), channel_get_actual_remote_address(),
or channel_get_canonical_remote_descr() (see code in channel.c for
differences among them) on TO_OR_CIRCUIT(circ)->p_chan.

Note: only do this if you want a string to show the user or something like
that.  If you're going to parse it, it's very much brittle and not future-
proof.


-- 
Andrea Shepard
<andrea at torproject.org>
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