Re: [Sip] Ready for WGLC on SIPS draft? Any last thoughts on transport=tls?

[Robert Sparks <rjsparks at nostrum.com>]

Juha -

The classic answer for this is that the gateway should have a DNS  
name with its NAPTR and SRV
records configured to specify exactly TLS. Do you agree that if you  
have DNS available, that's good
enough?

I think you're pointing to specifically the case where you don't have  
DNS records pointing to UAS,
is that correct?

RjS

On Jun 4, 2007, at 1:05 PM, Juha Heinanen wrote:

> Francois Audet writes:
>
> > Which hop???
> >
> > UAC -----> Proxy 1  ------> Proxy 2 ------> UAS
>
> for example, lets say that UAS is pstn gw that needs to be contacted
> over tls.  proxy 1 makes a decision to use this particular pstn gw,
> rewrites r-uri so that it among other things contains transport=tls
> parameter, and then forwards the request to proxy 2 that is a "dumb"
> proxy whose purpose is to front end the gw.
>
> i don't know another way to do this because sip uri scheme cannot be
> upgraded to sips and sips scheme cannot be downgraded to sip.
>
> -- juha



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