[SR-Users] CANCEL relayed to broadcast 255.255.255.255

[Daniel-Constantin Mierla]

Hello,

that is the received CANCEL, not the one sent out by Kamailio. The Via
branch generated by Kamailio has the format present in the CANCEL sent
to downstream.

Probably there is some setting in the system (ip forwarding) causing it
or something else out of Kamailio control.

Cheers,
Daniel

On 26.05.20 17:34, Sergiu Pojoga wrote:
> Hi gents,
>
> Got this weird "problem", where CANCEL request is relayed to both the
> right destination as well as the 255.255.255.255 broadcast address!? I
> have no such logic in my script, that's for sure.
>
> I doesn't do anything harmful (as far as I can tell), but I'm just
> curious why it's doing that. Any ideas?
>
> version: kamailio 5.3.4
>
> *SIP Trace:*
>
> U 2020/05/26 08:40:10.941722 PBXIP:5060 -> KAMAILIO_IP:5060
> CANCEL sip:2383 at DOWNSTREAM_IP:10533;transport=TLS SIP/2.0
> Via: SIP/2.0/UDP PBXIP:5060;branch=z9hG4bK450689d6
> Max-Forwards: 69
> From: "some callerid" <sip:18001111111 at mypbx.mydomain.com
> <mailto:sip%3A18001111111 at mypbx.mydomain.com>>;tag=as4d223616
> To: <sip:2383 at DOWNSTREAM_IP:10533;transport=TLS>
> Call-ID: 1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com
> <mailto:1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com>
> CSeq: 102 CANCEL
> User-Agent: B2B
> Content-Length: 0
>
> U 2020/05/26 08:40:10.941799 KAMAILIO_IP:5060 -> 255.255.255.255:5060
> <http://255.255.255.255:5060>
> CANCEL sip:2383 at DOWNSTREAM_IP:10533;transport=TLS SIP/2.0
> Via: SIP/2.0/UDP PBXIP:5060;branch=z9hG4bK450689d6
> Max-Forwards: 69
> From: "some callerid" <sip:18001111111 at mypbx.mydomain.com
> <mailto:sip%3A18001111111 at mypbx.mydomain.com>>;tag=as4d223616
> To: <sip:2383 at DOWNSTREAM_IP:10533;transport=TLS>
> Call-ID: 1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com
> <mailto:1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com>
> CSeq: 102 CANCEL
> User-Agent: B2B
> Content-Length: 0
>
> T 2020/05/26 08:40:10.941899 KAMAILIO_IP:5061 -> DOWNSTREAM_IP:10533
> CANCEL sip:2383 at DOWNSTREAM_IP:10533;transport=TLS SIP/2.0
> Via: SIP/2.0/TLS
> proxy.mydomain.com:5061;branch=z9hG4bK3cbb.4c6a526982fa1fb93ca1ba73afd8484f.0
>
> Max-Forwards: 69
> From: "some callerid" <sip:18001111111 at mypbx.mydomain.com
> <mailto:sip%3A18001111111 at mypbx.mydomain.com>>;tag=as4d223616
> To: <sip:2383 at DOWNSTREAM_IP:10533;transport=TLS>
> Call-ID: 1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com
> <mailto:1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com>
> CSeq: 102 CANCEL
> Content-Length: 0
>
> U 2020/05/26 08:40:10.941935 KAMAILIO_IP:5060 -> PBXIP:5060
> SIP/2.0 200 canceling
> Via: SIP/2.0/UDP PBXIP:5060;branch=z9hG4bK450689d6
> From: "some callerid" <sip:18001111111 at mypbx.mydomain.com
> <mailto:sip%3A18001111111 at mypbx.mydomain.com>>;tag=as4d223616
> To:
> <sip:2383 at DOWNSTREAM_IP:10533;transport=TLS>;tag=a6a1c5f60faecf035a1ae5b6e96e979a-612a1516
> Call-ID: 1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com
> <mailto:1511475b69f6379b08f04d110f534da1 at mypbx.mydomain.com>
> CSeq: 102 CANCEL
> Server: Edge
> Content-Length: 0 
>
> Thanks,
> --Sergiu
>
> _______________________________________________
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> sr-users at lists.kamailio.org
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

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