[SR-Users] Incorrect Contact address

[Marc Soda]

Thanks Olle.  I am calling record_record() on the initial INVITE.  In fact,
the OK has a Record-Route header:

1.1.1.1 is the endpoint
2.2.2.2 is the kamailio proxy
3.3.3.3 is the backend server

SIP/2.0 200 OK
Via: SIP/2.0/UDP 1.1.1.1:60077
;rport=46110;branch=z9hG4bK-d8754z-eb9768c7e3a2d1e7-1---d8754z-
Record-Route: <sip:2.2.2.2;lr=on;ftag=db634167;nat=yes>
From: <sip:sip7878_spqa at edge.domain.com;transport=UDP>;tag=db634167
To: <sip:2155555555 at edge.coredial.com;transport=UDP>;tag=as3f9cf263
Call-ID: MzI5YTA3YmRkNzFiZjhhZTRkNTc2OGE1ZTc5ZjdjMmM.
CSeq: 2 INVITE
User-Agent: CoreDialPBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Contact: <sip:21555555555 at 3.3.3.3>
Content-Type: application/sdp
Content-Length: 266

v=0
o=root 13486 13487 IN IP4 3.3.3.3
s=session
c=IN IP4 3.3.3.3
t=0 0
m=audio 29990 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv

I don't think 3.3.3.3 should show up anywhere, it should be rewritten to
2.2.2.2.


On Wed, Mar 5, 2014 at 1:34 PM, Olle E. Johansson <oej at edvina.net> wrote:

>
> On 05 Mar 2014, at 18:30, Marc Soda <msoda at coredial.com> wrote:
>
> I have Kamailio setup as a proxy in front of a backend server (Asterisk).
>  When I make a call through the proxy, the Contact header in the 200 OK
> that is returned to the client has the IP of the backend server in it.
>  Thus, the client is sending it's ACK directly to the backend server.
>
> Is there a special method to rewrite the Contact header to be Kamailio's
> IP?
>
> Check record_route() in the default configuration script. You need to add
> a route set by using record_route() in the initial transaction.
>
> Cheers,
> /O
>
>
> Where is a good place in the config to do this?  (my config is loosely
> based on this:
> http://kb.asipto.com/asterisk:realtime:kamailio-4.0.x-asterisk-11.3.0-astdb
> )
>
> Thanks!
> Marc
>
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