Re: [SR-Users] Get destination IP from forwarded invite

Hi Cumhur,

ruri.hostport won't return the de-facto IPv[4,6] address if the RURI contains a domain name, that's why ppl have suggested to use the *onsend_route*, as it's the only route where the IP is exposed after DNS resolver is performed following the t_relay() or forward().

Cheers.

On Tue, Jan 21, 2020 at 8:16 AM CUMHUR KARAHAN < cumhur.karahan@consultant.turkcell.com.tr> wrote:

Hi again,

I used $sel(ruri.hostport) for Kamailio1 after t_relay in Relay route. So I managed to get the request-line URI's IP and port parameters of the outgoing INVITE that is leaving the first Kamailio box.

Thank you very much.

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of CUMHUR KARAHAN Sent: 17 Ocak 2020 Cuma 15:23 To: sr-users@lists.kamailio.org Subject: Re: [SR-Users] Get destination IP from forwarded invite

Hi Joel,

Thank you for your response.

In fact, I want to get Request-line URI's parameters of the outgoing INVITE that is leaving the first Kamailio box, briefly. Unfortunately "du - destination URL" or "sndto(name)" pseudo-variables indicate the next hope's information. And in this case, the next hope's information is not same as the ClientB's information.

As I tried to tell before, our setup is like that:

ClientA -> Kamailio1 -> Kamailio2 -> ClientB

I need the request line URI parameters of the invite message sent by Kamailio1 to Kamailio2. And these parameters contain ClientB's ip and port information such as 10.252.180.51:36945 as you can see below:

INVITE sip:905364167881@10.252.180.51:36945;transport=tls SIP/2.0 Record-Route: sip:gearbox11.turkcell.tgc:5060;r2=on;lr;did=7f5.f572;nat=yes Record-Route: sip:testsip05.tvoip.turkcell.com.tr:443 ;transport=tls;r2=on;lr;did=7f5.f572;nat=yes Via: SIP/2.0/UDP gearbox11.turkcell.tgc:5060;branch=z9hG4bK67ad.4e8e863f2475ab8d3053af0593548557.1;i=f Via: SIP/2.0/TLS 100.64.13.139:56993 ;received=212.252.34.165;branch=z9hG4bK.1SYkXD1Me;rport=32980 From: sip:905368601286@testsip.tvoip.turkcell.com.tr;tag=WbINy0ypx To: sip:905364167881@testsip.tvoip.turkcell.com.tr CSeq: 21 INVITE Call-ID: 1wF-vjzGIX ...

And, your question: no, we don't use the dispatcher mechanism. We just check the DB to find out Kamailio server which the number registered into and send the messages to this server basically.

Thanks for all...

-----Original Message----- From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of sr-users-request@lists.kamailio.org Sent: 17 Ocak 2020 Cuma 14:00 To: sr-users@lists.kamailio.org Subject: sr-users Digest, Vol 176, Issue 17

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Today's Topics:

1. Get destination IP from forwarded invite (CUMHUR KARAHAN)
2. Re: Kamalio + RTP Engine + SIP Client behind NAT (Richard Fuchs)
3. Re: Get destination IP from forwarded invite (Joel Serrano)
4. Re: Kamalio + RTP Engine + SIP Client behind NAT (Nuno Miguel Reis)
5. Re: Kamailio/RTC dinner at Fosdem 2020 (Federico Santulli)
6. Re: http_client interface (Daniel-Constantin Mierla)
7. Re: Kamailio stop to process incoming SIP traffic via TCP. (adeykunov)
8. Question about xhttp module kamailio 5.2.x (Jimmy Rodley)
9. Trouble with 302 Redirect (Jim Leahy)
10. Re: Kamalio + RTP Engine + SIP Client behind NAT (Richard Fuchs)
11. Re: http_client interface (Fred Posner)
12. Re: Trouble with 302 Redirect (Alex Balashov)
13. UCaaS Platform (Dario Vargas)
14. Re: [commercial announcement] (Henning Westerholt)

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Message: 1 Date: Thu, 16 Jan 2020 11:45:15 +0000 From: CUMHUR KARAHAN cumhur.karahan@consultant.turkcell.com.tr To: "sr-users@lists.kamailio.org" sr-users@lists.kamailio.org Subject: [SR-Users] Get destination IP from forwarded invite Message-ID: 319901a90d17413292ad249eb56df2ec@consultant.turkcell.com.tr Content-Type: text/plain; charset="utf-8"

Hi all,

I'm a newbie for Kamailio and working on a feature needs end-users' destination IP in the first transferred/forwarded invite message.

Basically, our system/call flow is like: ClientA -> Kamailio1 -> Kamailio2 -> ClientB

Invite from the clientA:

tls:212.252.34.165:32980 tls:172.21.193.100:5061 INVITE sip:905364167881@testsip.tvoip.turkcell.com.tr:443 SIP/2.0 Via: SIP/2.0/TLS 100.64.13.139:56993;branch=z9hG4bK.GoiTxA4Ee;rport From: sip:905368601286@testsip.tvoip.turkcell.com.tr;tag=WbINy0ypx To: sip:905364167881@testsip.tvoip.turkcell.com.tr CSeq: 20 INVITE ...

Needed Ip (Client B's IP 10.252.180.51 for this case) is in the INVITE row of the forwarded message.

Invite to the Kamailio2 :

udp:172.21.193.100:5060 udp:172.21.193.98:5060 INVITE sip:905364167881@10.252.180.51:36945;transport=tls SIP/2.0 Record-Route: sip:gearbox11.turkcell.tgc:5060;r2=on;lr;did=7f5.f572;nat=yes Record-Route: sip:testsip05.tvoip.turkcell.com.tr:443 ;transport=tls;r2=on;lr;did=7f5.f572;nat=yes Via: SIP/2.0/UDP gearbox11.turkcell.tgc:5060;branch=z9hG4bK67ad.4e8e863f2475ab8d3053af0593548557.1;i=f Via: SIP/2.0/TLS 100.64.13.139:56993 ;received=212.252.34.165;branch=z9hG4bK.1SYkXD1Me;rport=32980 From: sip:905368601286@testsip.tvoip.turkcell.com.tr;tag=WbINy0ypx To: sip:905364167881@testsip.tvoip.turkcell.com.tr CSeq: 21 INVITE ...

When the first invite message receives, the dialog variables or sel(msg...) parsed values belong to this first received message, as far as I understand during the tests. However I need the forwarded invite message's variables. Even after t_relay in RELAY route, it looks the message I have is the first one. So, I cannot reach this later IP in the forwarded invite message. As far as I understand, bear with me here please, this IP manipulation executes in t_relay function and in the C side of Kamailio. So, I cannot find a way to do that in the our native scripts.

Is there any way to get it without diving C code's abyss? Do you have any idea about it? I would appreciate it, if I can get any help or any clue.

Thanks for all...

S. Cumhur Karahan

[http://s.turkcell.com.tr/SiteAssets/Genel/mail-imza.jpg] < https://ddei3-0-ctp.trendmicro.com:443/wis/clicktime/v1/query?url=http%3a%2f...

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