[SR-Users] Kamailio breaks RFC's 'Contact Header'

[Henning Westerholt]

Hello,


Quoting from the bug report, where Daniel already replied:



"It looks like you are using topoh module, which has the purpose of changing the headers that contain ip addresses. Remove it from your config."



Have you tried already to deactivate this module in your cfg?



Cheers,



Henning


--
Henning Westerholt - https://skalatan.de/blog/
Kamailio services - https://gilawa.com<https://gilawa.com/>

From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of Edward Romanenco
Sent: Sunday, March 29, 2020 2:51 PM
To: sr-users at lists.sip-router.org
Subject: [SR-Users] Kamailio breaks RFC's 'Contact Header'

Description
I'm running Kamailio 5.2.0, whenever I relay an invite via Kamailio, my original contact header is changed from the original:
sip:+XXXXXXXXX at YYY.YYY.YYY.YYYY:5060;transport=udp;gw=netvision
To
sip:YYY.YYY.YYY.YYY;line=sr-.n274i0TMfsHMcCAlVyAMV5IlgCXvV8n4edQlgIUlgKQ4Vk74gI1LmZ69NM79FZAR3JC.cDNLfHUj3Wnp3MP9nd*.
Even when I set it correctly on my route, using:
remove_hf("Contact");
append_hf("Contact: sip:$tU at YYY.YYY.YYY.YYY:5060;transport=udp;gw=netvision\r\n", "Contact");

It still ends up being modified.
What can I do to keep the contact header as it is?

SIP Traffic
U YYY.YYY.YYY.YYY:5060 -> 81.24.193.248:5060
INVITE sip:+442033202609 at 81.24.193.248:5060 SIP/2.0.
Record-Route: <sip:YYY.YYY.YYY.YYY;r2=on;lr=on;ftag=mp0S9yH11vryH;vsf=AAAAAAAAAAAAAAAAAAAAAAADCAEACRgPGB8AAy4xNjM->.
Record-Route: <sip:2YYY.YYY.YYY.YYY;line=sr-.n274V8TlidQMVyUlg87vV8nlfDXlVHB9VD0.VHB9VDoLGtNRbH7ltlTEkyQl3jXEky1LNMoRkt5ukt5ukt5ukt5ukt5ukt5ukt5ukt5W8M5WktckoLuWAsduktTMm64pCAD>.
Via: SIP/2.0/UDP YYY.YYY.YYY.YYY;branch=z9hG4bK53e9.308596b23ed683368534c9d609dce0f6.0.
Via: SIP/2.0/UDP YYY.YYY.YYY.YYY;branch=z9hG4bKsr-kA2uvfsUlerJWtIylgCXvV8n4edQlgIUlgKQ4Vk74gI1.oJVjb2njburlgCXvV8n4edQlgIUlgKQ4HWsRbWPLVDX.GrXLcAHlcC74nZXKbTVpcHh4b6mMGZvJgLsLcJTkgtGu2PGgy**.
Max-Forwards: 67.
From: +18702935016 <sip:+18702935016 at YYY.YYY.YYY.YYY>;tag=mp0S9yH11vryH.
To: <sip:+442033202609 at 81.24.193.248>.
Call-ID: !!:jbkfMgyHjbsDjblfjqAQlVldvgyHKolDlcIHlcknKVIdjcIT.
CSeq: 18182498 INVITE.
Contact: <sip:YYY.YYY.YYY.YYY;line=sr-.n274i0TMfsHMcCAlVyAMV5IlgCXvV8n4edQlgIUlgKQ4Vk74gI1LmZ69NM79FZAR3JC.cDNLfHUj3Wnp3MP9nd*>.
User-Agent: FreeSWITCH-mod_sofia/1.9.0+git~20180706T160334Z~de3df8dc0e~64bit.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY.
Supported: timer, path, replaces.
Allow-Events: talk, hold, conference, refer.
Content-Type: application/sdp.
Content-Disposition: session.
Content-Length: 224.
Remote-Party-ID: "+18702935016" <sip:+18702935016 at YYY.YYY.YYY.YYY>;party=calling;screen=yes;privacy=off.
.
v=0.
o=FreeSWITCH 1585439298 1585439299 IN IP4 ZZZ.ZZZ.ZZZ.ZZZ.
s=FreeSWITCH.
c=IN IP4 ZZZ.ZZZ
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