[SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply

Olle E. Johansson oej at edvina.net
Mon Apr 4 10:13:19 CEST 2016 

> On 04 Apr 2016, at 10:02, Grant Bagdasarian <gb at cm.nl> wrote:
> 
> Hi Daniel,
>  
> You mentioned below about this issue not being complaint with the RFC.
> Our supplier is telling us this is normal behavior and that they went through the RFC and found this was normal behavior.
>  
> If it’s not too much work, could you tell me in which part of the RFC this is described?
8.2.6.2 <https://tools.ietf.org/html/rfc3261#section-8.2.6.2> Headers and Tags

   The From field of the response MUST equal the From header field of
   the request.  The Call-ID header field of the response MUST equal the
   Call-ID header field of the request.  The CSeq header field of the
   response MUST equal the CSeq field of the request.  The Via header
   field values in the response MUST equal the Via header field values
   in the request and MUST maintain the same ordering.


RFC 3261 basics.

/O
>  
> Regards,
>  
> Grant
>  
> From: Daniel-Constantin Mierla [mailto:miconda at gmail.com <mailto:miconda at gmail.com>] 
> Sent: Friday, March 18, 2016 4:33 PM
> To: Grant Bagdasarian <gb at cm.nl <mailto:gb at cm.nl>>; Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>>
> Subject: Re: [SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply
>  
> Hello,
> 
> the problem is that the device you interconnect with (Server: sbc_5) is not sending all the Via headers from INVITE in the 487 -- it is only one Via:
> 
> # U 10.0.0.1:5060 -> 10.14.0.1:5060
> 
> SIP/2.0 487 Request Cancelled.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060> <sip:+31612345678 at 10.14.0.3:5060>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060> <sip:0031123456789 at 10.14.0.3:5060>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060> <sip:10.0.0.1:5060>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> 
> Notice the 100 trying Via stack:
> 
> # U 10.0.0.1:5060 -> 10.14.0.1:5060
> 
> SIP/2.0 100 Trying.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bK3c3b.9cad3c629aa5c2985e543c285f2f6d1d.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bKsr-jNXap0IRuJngh6iFuS1xpYUspYiRWQikWSisuQfjcQKOM-8C8odTwzW4V-4LMU1N8O2fWSINuYFmpSUfpcKXuq8NW0is8YdObqasuQuP.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060> <sip:+31612345678 at 10.14.0.3:5060>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060> <sip:0031123456789 at 10.14.0.3:5060>.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060> <sip:10.0.0.1:5060>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> 
> 
> My guess that the sbc_5 is so poor implemented that it takes the Via from last request, which is CANCEL, but CANCEL is a hop-by-hop request in this case. If my guess is confirmed, the implementation of sbc_5 is really far away from RFC3261, something that I haven't probably seen since 2002/3.
> 
> To test, you can try to use forward() for CANCEL instead of t_relay(). But you need to know where to send it -- same address as for INVITE -- you can hardcode some values in config for sake of simplicity to test. A proper workaround can be built using htable module to store where the invite was sent, using call-id as a key.
> 
> Cheers,
> Daniel
> 
> On 18/03/16 15:43, Grant Bagdasarian wrote:
> Hi Daniel,
>  
> No problem J
>  
> Our devices are kamailios. Our customers use different equipment for sending traffic and I’m not sure what kind of equipment our carriers are using. So, I can’t really tell what device they’re using. My test was done using Bria (X-Lite) acting as a “customer”.
>  
> Regards,
>  
> Grant
>  
> From: Daniel-Constantin Mierla [mailto:miconda at gmail.com <mailto:miconda at gmail.com>] 
> Sent: Friday, March 18, 2016 10:25 AM
> To: Grant Bagdasarian <gb at cm.nl> <mailto:gb at cm.nl>; Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org> <mailto:sr-users at lists.sip-router.org>
> Subject: Re: [SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply
>  
> Hello,
> 
> with CeBIT trip this week, I didn't get the change to look too much at it...
> 
> What is the device sending the reply to INVITE?
> 
> Cheers,
> Daniel
> 
> On 18/03/16 10:05, Grant Bagdasarian wrote:
> Hello Community,
>  
> Could someone point me into the right direction for fixing this issue with CANCEL replies?
>  
> Regards,
>  
> Grant
>  
> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org <mailto:sr-users-bounces at lists.sip-router.org>] On Behalf Of Grant Bagdasarian
> Sent: Tuesday, March 15, 2016 8:47 PM
> To: 'miconda at gmail.com <mailto:miconda at gmail.com>' <miconda at gmail.com> <mailto:miconda at gmail.com>; Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org> <mailto:sr-users at lists.sip-router.org>
> Subject: Re: [SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply
>  
> Any ideas how to solve this? 
> 
> Regards,
> 
> Grant 
> From: sr-users <sr-users-bounces at lists.sip-router.org <mailto:sr-users-bounces at lists.sip-router.org>> on behalf of Grant Bagdasarian <gb at cm.nl <mailto:gb at cm.nl>>
> Sent: Monday, March 14, 2016 3:09:47 PM
> To: 'miconda at gmail.com <mailto:miconda at gmail.com>'; Kamailio (SER) - Users Mailing List
> Subject: Re: [SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply
>  
> Hello Daniel,
>  
> Carrier: 10.0.0.1
> Kamailio 1: 10.14.0.1
> Kamailio 2: 10.14.0.2
>  
> I also removed the SDP from the INVITE and the 183 messages.
>  
> This is the trace from the Kamailio which directly communicates with the Carrier.
>  
> U 10.14.0.2:5060 -> 10.14.0.1:5060
> INVITE sip:0031123456789 at 10.14.0.1:5060 <sip:0031123456789 at 10.14.0.1:5060> SIP/2.0.
> Record-Route: <sip:10.14.0.2;lr=on <sip:10.14.0.2;lr=on>>.
> Record-Route: <sip:10.14.0.3;lr=on <sip:10.14.0.3;lr=on>>.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bK3c3b.9cad3c629aa5c2985e543c285f2f6d1d.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bKsr-jNXap0IRuJngh6iFuS1xpYUspYiRWQikWSisuQfjcQKOM-8C8odTwzW4V-4LMU1N8O2fWSINuYFmpSUfpcKXuq8NW0is8YdObqasuQuP.
> Max-Forwards: 68.
> Contact: <sip:10.14.0.3;line=sr-1sX9bA20uS8PuS8NWSFPWUiPW0IRuS8RuJHNuQ4KuQ89 <sip:10.14.0.3;line=sr-1sX9bA20uS8PuS8NWSFPWUiPW0IRuS8RuJHNuQ4KuQ89>>.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 INVITE.
> Allow: SUBSCRIBE, NOTIFY, INVITE, ACK, CANCEL, BYE, REFER, INFO, MESSAGE.
> Content-Type: application/sdp.
> User-Agent: Bria 4 release 4.2.1 stamp 78100.
> Content-Length: 431.
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 100 trying -- your call is important to us.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bK3c3b.9cad3c629aa5c2985e543c285f2f6d1d.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bKsr-jNXap0IRuJngh6iFuS1xpYUspYiRWQikWSisuQfjcQKOM-8C8odTwzW4V-4LMU1N8O2fWSINuYFmpSUfpcKXuq8NW0is8YdObqasuQuP.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 INVITE.
> Server: kamailio (4.3.4 (x86_64/linux)).
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.0.0.1:5060
> INVITE sip:0031123456789 at 10.0.0.1:5060 <sip:0031123456789 at 10.0.0.1:5060> SIP/2.0.
> Record-Route: <sip:10.14.0.1;lr=on <sip:10.14.0.1;lr=on>>.
> Record-Route: <sip:10.14.0.2;lr=on <sip:10.14.0.2;lr=on>>.
> Record-Route: <sip:10.14.0.3;lr=on <sip:10.14.0.3;lr=on>>.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bK3c3b.9cad3c629aa5c2985e543c285f2f6d1d.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bKsr-jNXap0IRuJngh6iFuS1xpYUspYiRWQikWSisuQfjcQKOM-8C8odTwzW4V-4LMU1N8O2fWSINuYFmpSUfpcKXuq8NW0is8YdObqasuQuP.
> Max-Forwards: 67.
> Contact: <sip:10.14.0.3;line=sr-1sX9bA20uS8PuS8NWSFPWUiPW0IRuS8RuJHNuQ4KuQ89 <sip:10.14.0.3;line=sr-1sX9bA20uS8PuS8NWSFPWUiPW0IRuS8RuJHNuQ4KuQ89>>.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 INVITE.
> Allow: SUBSCRIBE, NOTIFY, INVITE, ACK, CANCEL, BYE, REFER, INFO, MESSAGE.
> Content-Type: application/sdp.
> User-Agent: Bria 4 release 4.2.1 stamp 78100.
> Content-Length: 431.
>  
> #
> U 10.0.0.1:5060 -> 10.14.0.1:5060
> SIP/2.0 100 Trying.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bK3c3b.9cad3c629aa5c2985e543c285f2f6d1d.0.
> Via: SIP/2.0/UDP 10.14.0.3;branch=z9hG4bKsr-jNXap0IRuJngh6iFuS1xpYUspYiRWQikWSisuQfjcQKOM-8C8odTwzW4V-4LMU1N8O2fWSINuYFmpSUfpcKXuq8NW0is8YdObqasuQuP.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.2:5060 -> 10.14.0.1:5060
> CANCEL sip:0031123456789 at 10.14.0.1:5060 <sip:0031123456789 at 10.14.0.1:5060> SIP/2.0.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> Max-Forwards: 68.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 CANCEL.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.0.0.1:5060
> CANCEL sip:0031123456789 at 10.0.0.1:5060 <sip:0031123456789 at 10.0.0.1:5060> SIP/2.0.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> Max-Forwards: 67.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 CANCEL.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 200 canceling.
> Via: SIP/2.0/UDP 10.14.0.2;branch=z9hG4bK3c3b.6002c178e1a0751f80857e10c4caeb35.0.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=a6a1c5f60faecf035a1ae5b6e96e979a-52bb.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 CANCEL.
> Server: kamailio (4.3.4 (x86_64/linux)).
> Content-Length: 0.
> .
>  
> #
> U 10.0.0.1:5060 -> 10.14.0.1:5060
> SIP/2.0 200 OK.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 CANCEL.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.0.0.1:5060 -> 10.14.0.1:5060
> SIP/2.0 487 Request Cancelled.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.0.0.1:5060
> ACK sip:0031123456789 at 10.0.0.1:5060 <sip:0031123456789 at 10.0.0.1:5060> SIP/2.0.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK3c3b.a6603e0f92db305f775f8bf1d95dc7d9.0.
> Max-Forwards: 67.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> CSeq: 2 ACK.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 487 Request Cancelled.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 487 Request Cancelled.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 487 Request Cancelled.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 487 Request Cancelled.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060 <sip:+31612345678 at 10.14.0.3:5060>>;tag=1f15682a.
> To: <sip:0031123456789 at 10.14.0.3:5060 <sip:0031123456789 at 10.14.0.3:5060>>;tag=sbcsipuas_1_C52464_20160314100333554_b12sb10.
> Call-ID: 78100ZGIyZGM2ZTY4ODM4YWZlZGFjNTBjMDZmYjQzMzBkOGI.
> Contact: <sip:10.0.0.1:5060 <sip:10.0.0.1:5060>>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> From: sr-users [mailto:sr-users-bounces at lists.sip-router.org <mailto:sr-users-bounces at lists.sip-router.org>] On Behalf Of Daniel-Constantin Mierla
> Sent: Monday, March 14, 2016 2:44 PM
> To: Kamailio (SER) - Users Mailing List <sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>>
> Subject: Re: [SR-Users] Kamailio 4.3.4: receive_msg(): no via found in reply
>  
> Hello,
> 
> what would be relevant here is seeing the INVITE request sent to 10.14.0.1:5060 -- paste it to the mailing list discussion. That is going to be used to generate 487, and the Via stack from it should be used there.
> 
> Cheers,
> Daniel
> 
> On 14/03/16 13:23, Grant Bagdasarian wrote:
> Hello,
>  
> We’re testing kamailio 4.3.4 with two kamailio’s communicating with each other. One of them is a gateway with rtpengine at the carrier side, the other is a basic sip router.
> When calling a destination and cancelling the INVITE a 487 is received from the carrier and directly ACK’d by the first kamailio and in turn is forwarded to the second.
> But the 487 response received by the 2nd kamailio doesn’t have a Via header which results in kamailio printing the error: receive_msg(): no via found in reply.
>  
> Any ideas why the forwarded 487 doesn’t contain a Via header and how to fix this?
>  
> Note: IP’s are changed.
>  
> Carrier: 10.0.0.1
> Kamailio 1: 10.14.0.1
> Kamailio 2: 10.14.0.2
>  
> U 10.0.0.1:5060 -> 10.14.0.1:5060
> SIP/2.0 487 Request Cancelled.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK8e28.642c68037d059634308d4be8fe3f0cdc.0.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060> <sip:+31612345678 at 10.14.0.3:5060>;tag=109ac722.
> To: <sip:003112345678 at 10.14.0.3:5060> <sip:003112345678 at 10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.
> Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.
> Contact: <sip:10.0.0.1:5060> <sip:10.0.0.1:5060>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.0.0.1:5060
> ACK sip:003112345678 at 10.0.0.1:5060 <sip:003112345678 at 10.0.0.1:5060> SIP/2.0.
> Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK8e28.642c68037d059634308d4be8fe3f0cdc.0.
> Max-Forwards: 67.
> To: <sip:003112345678 at 10.14.0.3:5060> <sip:003112345678 at 10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.
> From: "+31612345678"<sip:+31612345678 at 10.14.0.3:5060> <sip:+31612345678 at 10.14.0.3:5060>;tag=109ac722.
> Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.
> CSeq: 2 ACK.
> Content-Length: 0.
> .
>  
> #
> U 10.14.0.1:5060 -> 10.14.0.2:5060
> SIP/2.0 487 Request Cancelled.
> From: "+31612345678" <sip:+31612345678 at 10.14.0.3:5060> <sip:+31612345678 at 10.14.0.3:5060>;tag=109ac722.
> To: <sip:003112345678 at 10.14.0.3:5060> <sip:003112345678 at 10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.
> Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.
> Contact: <sip:10.0.0.1:5060> <sip:10.0.0.1:5060>.
> CSeq: 2 INVITE.
> Server: sbc_5.
> Content-Length: 0.
> 
> 
> 
> 
> 
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>
>  
> 
> -- 
> Daniel-Constantin Mierla
> http://www.asipto.com <http://www.asipto.com/>
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com <http://www.kamailioworld.com/>
> 
> 
> 
> -- 
> Daniel-Constantin Mierla
> http://www.asipto.com <http://www.asipto.com/>
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com <http://www.kamailioworld.com/>
> 
> 
> -- 
> Daniel-Constantin Mierla
> http://www.asipto.com <http://www.asipto.com/>
> http://twitter.com/#!/miconda <http://twitter.com/#!/miconda> - http://www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
> Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com <http://www.kamailioworld.com/>_______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>

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