11 Mar
2009
11 Mar
'09
1:33 p.m.
Hello,
I'm trying to add CallForwarding to my kamailio.cfg.
Before relaying an INVITE from one subscriber to another, I'm required
to modify the From username to the PSTN number of the caller. So I use
uac_replace_from and this works fine.
I can see kamailio sendind this record-route:
Record-Route:
<sip:192.168.33.2;lr=on;ftag=qunug47bd1hc74ir26iv;vsf=AAAAAERUW1NLXloEeFVZKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA--;did=b76.5c17ed25>
But then, when the callee fails to answer and failure_route is called,
I need to modify the From username to the PSTN number of the callee
before doing the forward. If I simply try to call uac_replace_from
again inside failure_route, record-route is sent with a duplicate vsf
parameter like this:
Record-Route:
<sip:192.168.33.2;lr=on;ftag=qunug47bd1hc74ir26iv;vsf=AAAAAERUW1NLXloEeFVZKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA--;did=b76.5c17ed25;vsf=AAAAAERUW1NLXloEeFVeKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA-->
And this causes two problems:
- the message becomes too big and the GW replies with "513 Message too large"
- the reply is sent back to the caller with duplicate From header and
some UAs do not acknowledge the reply.
So, is it possible to modify the From header more than once?
regards,
takeshi
11 Mar
11 Mar
1:52 p.m.
New subject: [Kamailio-Users] Modifying the URI in the header From more than once
On Wed, Mar 11, 2009 at 8:33 PM, mayamatakeshi <mayamatakeshi(a)gmail.com> wrote:
Hello,
I'm trying to add CallForwarding to my kamailio.cfg.
Before relaying an INVITE from one subscriber to another, I'm required
to modify the From username to the PSTN number of the caller. So I use
uac_replace_from and this works fine.
I can see kamailio sendind this record-route:
Record-Route:
<sip:192.168.33.2;lr=on;ftag=qunug47bd1hc74ir26iv;vsf=AAAAAERUW1NLXloEeFVZKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA--;did=b76.5c17ed25>
But then, when the callee fails to answer and failure_route is called,
I need to modify the From username to the PSTN number of the callee
before doing the forward. If I simply try to call uac_replace_from
again inside failure_route, record-route is sent with a duplicate vsf
parameter like this:
Record-Route:
<sip:192.168.33.2;lr=on;ftag=qunug47bd1hc74ir26iv;vsf=AAAAAERUW1NLXloEeFVZKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA--;did=b76.5c17ed25;vsf=AAAAAERUW1NLXloEeFVeKRYIDAZKBwRPEQYEH1oLCQAEFS5qcA-->
And this causes two problems:
- the message becomes too big and the GW replies with "513 Message too large"
- the reply is sent back to the caller with duplicate From header and
some UAs do not acknowledge the reply.
Sorry, I forgot to mention. Calling uac_replace_from inside
failure_route has the above effects but doesn't change the From header
at all.
So, is it possible to modify the From header more than once?
regards,
takeshi
5:39 p.m.
New subject: [Kamailio-Users] Modifying the URI in the header From more than once
2009/3/11 mayamatakeshi <mayamatakeshi(a)gmail.com>om>:
So, is it possible to modify the From header more than
once?
AFAIR there are various issues when doing it. You should avoid it for
now. Instead, try adding P-Asserted-Identity header to set the
caller-ID when routing the request to a PSTN gateway.
--
Iñaki Baz Castillo
<ibc(a)aliax.net>
12 Mar
12 Mar
3:10 a.m.
New subject: [Kamailio-Users] Modifying the URI in the header From more than once
On Thu, Mar 12, 2009 at 12:39 AM, Iñaki Baz Castillo <ibc(a)aliax.net> wrote:
2009/3/11 mayamatakeshi
<mayamatakeshi(a)gmail.com>om>:
Thanks,
I'll check our GWs.
So, is it possible to modify the From header more
than once?
AFAIR there are various issues when doing it. You should avoid it for
now. Instead, try adding P-Asserted-Identity header to set the
caller-ID when routing the request to a PSTN gateway.
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Iñaki Baz Castillo -
mayamatakeshi