[Kamailio-Users] Error in header - where and how?

[Daniel-Constantin Mierla]

Hello,

On 2/12/10 2:10 PM, Anders wrote:
> Hi Daniel,
>
> Thanks...I think that I maybe understand... - let's see: What you're
> saying is that the problem is the missing Max-Forwards in the initial
> INVITE that I receive, right? If this is the case, should I solve this
> by rewriting the INVITE and add a Max-Forwards, and if so, how would I
> go about this?
>    

you have an error in the script. The max forwards header is added twice. 
Search for mf_process_maxfwd_header in your config.

The maxfwd processing is:
- if the received message has one, work on it
- if does not have, add on

Not being in received, kamailio will add one. And seems the config is 
doing maxfwd processing twice, with two different values.

Cheers,
Daniel

> Thanks a lot!
>
> //Anders
>
> On Fri, Feb 12, 2010 at 11:01 AM, Daniel-Constantin Mierla
> <miconda at gmail.com>  wrote:
>    
>> Hello,
>>
>> maybe it does not like the two Max-Forwards headers in forwarded invite.
>>
>> Received invite does not have one, so you probably do two times max forward
>> processing in you config, one time with 5 and one time with 10.
>>
>> Cheers,
>> Daniel
>>
>> On 2/12/10 1:46 PM, Anders wrote:
>>      
>>> Hi,
>>>
>>> My carrier doesn't like the invites that come from two specific
>>> customers I have, who both use something called VoipSwitch. It returns
>>> from the carrier as a Bad Request.
>>>
>>> Below is the dialog - I'm not sharp enough to see what's wrong - anyone?
>>>
>>> Thanks!
>>>
>>> //Anders
>>>
>>> U 2010/02/01 17:53:42.355689 CustomerIP:5060 ->    MyProxyIP:5060
>>> INVITE sip:890912551128650136 at MyProxyIP SIP/2.0.
>>> CSeq: 1 INVITE.
>>> Via: SIP/2.0/UDP CustomerIP:5060;branch=z9hG4bk01025810150801381470578.
>>> From: "SERVER
>>> BR"<sip:001184517324 at CustomerIP:5060>;tag=010258101508381470562.
>>> Call-ID: GW6d4c945d2c573c27 at CustomerIP.
>>> To:<sip:890912551128650136 at MyProxyIP>.
>>> Contact:<sip:CustomerIP:5060;transport=udp>.
>>> Content-Type: application/sdp.
>>> Content-Length: 250.
>>> Remote-Party-ID: "SERVER
>>> BR"<sip:69912390 at customerDNS>;privacy=off;screen=no.
>>> .
>>> v=0.
>>> o=VoipSwitch 9298 9298 IN IP4 CustomerIP.
>>> s=VoipSIP.
>>> i=Audio Session.
>>> c=IN IP4 CustomerIP.
>>> t=0 0.
>>> m=audio 8298 RTP/AVP 18 101.
>>> a=rtpmap:18 G729/8000/1.
>>> a=fmtp:18 annexb=no.
>>> a=rtpmap:101 telephone-event/8000.
>>> a=fmtp:101 0-15.
>>> a=sendrecv.
>>>
>>>
>>> U 2010/02/01 17:53:42.355990 MyProxyIP:5060 ->    CustomerIP:5060 SIP/2.0
>>> 100 Giving a try.
>>> CSeq: 1 INVITE.
>>> Via: SIP/2.0/UDP
>>>
>>> CustomerIP:5060;branch=z9hG4bk01025810150801381470578;rport=5060;received=187.45.218.17$
>>> From: "SERVER
>>> BR"<sip:001184517324 at CustomerIP:5060>;tag=010258101508381470562.
>>> Call-ID: GW6d4c945d2c573c27 at CustomerIP.
>>> To:<sip:890912551128650136 at MyProxyIP>.
>>> Server: Kamailio.
>>> Content-Length: 0.
>>> .
>>>
>>>
>>> U 2010/02/01 17:53:42.356010 MyProxyIP:5060 ->    CarrierIP:5060 INVITE
>>> sip:84370551128650136 at CarrierIP:5060 SIP/2.0.
>>> Max-Forwards: 10.
>>> Max-Forwards: 5.
>>> Record-Route:<sip:MyProxyIP;lr=on;nat=yes;did=e4c.e1f33ad5>.
>>> CSeq: 1 INVITE.
>>> Via: SIP/2.0/UDP MyProxyIP;branch=z9hG4bK139a.a74691c5.0.
>>> Via: SIP/2.0/UDP
>>>
>>> CustomerIP:5060;rport=5060;received=CustomerIP;branch=z9hG4bk0102581015080138147057$
>>> From: "SERVER
>>> BR"<sip:001184517324 at CustomerIP:5060>;tag=010258101508381470562.
>>> Call-ID: GW6d4c945d2c573c27 at CustomerIP.
>>> To:<sip:890912551128650136 at MyProxyIP>.
>>> Contact:<sip:CustomerIP:5060;transport=udp>.
>>> Content-Type: application/sdp.
>>> Content-Length: 250.
>>> Remote-Party-ID: "SERVER
>>> BR"<sip:69912390 at customerDNS>;privacy=off;screen=no.
>>> .
>>> v=0.
>>> o=VoipSwitch 9298 9298 IN IP4 CustomerIP.
>>> s=VoipSIP.
>>> i=Audio Session.
>>> c=IN IP4 CustomerIP.
>>> t=0 0.
>>> m=audio 8298 RTP/AVP 18 101.
>>> a=rtpmap:18 G729/8000/1.
>>> a=fmtp:18 annexb=no.
>>> a=rtpmap:101 telephone-event/8000.
>>> a=fmtp:101 0-15.
>>> a=sendrecv.
>>>
>>>
>>> U 2010/02/01 17:53:42.608917 CarrierIP:5060 ->    MyProxyIP:5060 SIP/2.0
>>> 400 Bad Request.
>>> Via: SIP/2.0/UDP MyProxyIP;branch=z9hG4bK139a.a74691c5.0.
>>> Via: SIP/2.0/UDP
>>>
>>> CustomerIP:5060;rport=5060;received=CustomerIP;branch=z9hG4bk0102581015080138147057$
>>> From: "SERVER
>>> BR"<sip:001184517324 at CustomerIP:5060>;tag=010258101508381470562.
>>> To:<sip:890912551128650136 at MyProxyIP>.
>>> Call-ID: GW6d4c945d2c573c27 at CustomerIP.
>>> CSeq: 1 INVITE.
>>> Content-Length: 0.
>>>
>>> _______________________________________________
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>>> Users at lists.kamailio.org
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>>>
>>>
>>>        
>> --
>> Daniel-Constantin Mierla
>> SIP Server Professional Solutions
>> * http://www.asipto.com/
>>
>>
>>      
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>
>    

-- 
Daniel-Constantin Mierla
SIP Server Professional Solutions
* http://www.asipto.com/