5 Dec
2006
5 Dec
'06
3:50 p.m.
Martin Hoffmann wrote:
Andreas Heise wrote:
That's why there is a dedicated function which puts the original from
uri into a Record_route parameter and keeps track of mangling From
header. I'm using it in auto mode without problems. (IIRC the cancel
still has to be rewritten manually)
Of course a simple regexp wont work.
regards
klaus
I don't know if the UAC module is available
for SER,
but in OpenSER you could try something like this......
if(from_uri=~".*(a)localhost.localdomain")
{
uac_replace_from("*$fn* ","sip:*$fU*@128.242.111.222:5060");
};
One should mention that doing this is in violation of RFC 3261. A proxy
is not allowed to mess with the From- or To-URI. In practice, you should
be carefull with this, still. I don't know what the function mentioned
does exactly, but if a voice gateway of a certain well-known provider of
networking equipment receives a response with a different From- or
To-URI than what it put in the request, it will simply drop your
response.[0]
The best answer to the original question IMHO is: Don't do it.
Regards,
Martin
[0] Disclaimer: At least it did about two years ago. But SBCs in general
are very picky with this kind of stuff.
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Klaus Darilion
nic.at