On Mon, Nov 2, 2009 at 4:01 PM, Scott Lawrence <[email protected]>wrote:

> On Mon, 2009-11-02 at 14:48 -0500, Dale Worley wrote:
> > On Mon, 2009-11-02 at 05:46 -0800, Scott Lawrence wrote:
> > > On Sun, 2009-11-01 at 17:32 -0500, Dale Worley wrote:
> > > > On Sun, 2009-11-01 at 13:08 -0800, Scott Lawrence wrote:
> > > > > Why do you conclude that sipXbridge modifies the contact for the
> benefit
> > > > > of the proxy?
> > > >
> > > > A couple of days ago I talked to Ranga, who mentioned that the proxy
> > > > does not handle maddr parameters correctly, and I have some vague
> memory
> > > > that he said that sipXbridge removed them.  In any case, we have to
> > > > worry about the situation, since if sipXbridges does *not* remove the
> > > > maddr parameter, the proxy *will* handle the request incorrectly.
> > >
> > > I don't understand... if there was a bug in the proxy not handling
> maddr
> > > correctly, why wouldn't we _fix_ it instead of doing a workaround in
> > > sipXbridge that is likely to break something else?
> >
> > I didn't write it, I am just observing.
> >
> > > Looking at the trace in 6909, it's clear that sipXbridge is breaking
> the
> > > routing between frames 52 and 53 - it strips the maddr but just drops
> > > the information....
> > >
> > > It might have worked if the bridge had added the maddr value to the
> > > record-route to preserve the routing, but that's probably not the right
> > > thing to do.
> >
> > More interestingly, what is the right thing to do to fix XX-6909?
>
> 1. Change sipXbridge so that it doesn't discard maddr.
> 2. Fix whatever that breaks.
>



I found a place in the Router implementation where maddr is being
erroneously stripped. I would like to commit this change into the 4.1 branch
for testing and if all is well, I can port to the 4.0 branch (its a one line
change and fairly obvious).


Ranga



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-- 
M. Ranganathan
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