[OpenSIPS-Users] [Re: Routing problem with Record-Route]

[Bogdan-Andrei Iancu]

Hi,

"lr" param is used (as per RFC 3261) to mark a route as "loose router" 
(versus a "strict router"). As per RFC, the correct format should be 
just param name the without value ( just "lr") - see page 222 for RFC 3261.

OpenSIPS properly handle both cases (with or without the "yes" value).

The "r2" param is OpenSIPS specific and it is used to mark the so called 
"double routing" (when a single hop adds 2 RR headers, because of 
interface changing).

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 08/24/2012 03:08 PM, mickael at winlux.fr wrote:
> Exactly Opensips add lr=on and callee device transform it into lr;r2=on.
>
> my other devices (asterisk, avaya, etc ...) do not transform lr...
>
> My Opensips version is version: opensips 1.6.4-2-tls (i386/freebsd)
>
> what is the difference between lr=on and lr;r2=on ?
>
>> So OpenSIPS adds "lr=on" but the callee device transform it into a
>> "lr".....
>>
>> What version of opensips are you using?
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developer
>> http://www.opensips-solutions.com
>>
>>
>> On 08/24/2012 02:27 PM, mickael at winlux.fr wrote:
>>> Hi Bogdan-Andrei,
>>> Thank you for your response.
>>>
>>> Yes I confirm in INVITE I have 2 RR with lr=on:
>>>
>>> <sip:8.8.8.8;r2=on;lr=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>> <sip:8.8.8.9;r2=on;lr=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>
>>> and in 200OK I have 1 RR with just lr:
>>>
>>> <sip:8.8.8.8;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>,<sip:8.8.8.9;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>
>>> and in ACK I have 2 Route with lr:
>>>
>>> <sip:8.8.8.8;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>> <sip:8.8.8.9;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>
>>>
>>>> Hi Mickael,
>>>>
>>>> Can you confirm (for the failed call) that OpenSIPS added in INVITE RR
>>>> hdrs with "lr=on" param and in the 200 OK or ACK you get only "lr"
>>>> param
>>>> (with no value) ?
>>>>
>>>> Regards,
>>>>
>>>> Bogdan-Andrei Iancu
>>>> OpenSIPS Founder and Developer
>>>> http://www.opensips-solutions.com
>>>>
>>>>
>>>> On 08/24/2012 11:09 AM, mickael at winlux.fr wrote:
>>>>> Hi list,
>>>>> I have a routing problem with my Opensips
>>>>> version: opensips 1.6.4-2-tls (i386/freebsd)
>>>>>
>>>>> Indeed Opensips is unable to route ACK packet to final destination
>>>>> (look
>>>>> attachement .txt).
>>>>>
>>>>> The only difference with a normal call (Call OK), it's Record-Route
>>>>> formating. Customer's device send 200OK with differents fields:
>>>>>
>>>>>
>>>>> Test device with the problem (call NOT OK):
>>>>> Ex: problem call = 1 field for 2 routes
>>>>> Extract from the customer 200OK
>>>>>
>>>>> Record-Route:
>>>>> <sip:8.8.8.8;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>,<sip:9.9.9.9;lr;r2=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>>>
>>>>>
>>>>> Test with another device (call OK)
>>>>> Ex: normal call = 2 fields for 2 routes
>>>>> Extract from the Customer 200OK
>>>>>
>>>>> Record-Route:
>>>>> <sip:8.8.8.8;r2=on;lr=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>>> Record-Route:
>>>>> <sip:9.9.9.9;r2=on;lr=on;ftag=c97942d9-13c4-50237efd-8d49d7d0-5fb68102;xyz=3a2.86da31c4>
>>>>>
>>>>> My question is: This opensips version is able to work with 1
>>>>> record-route
>>>>> field containing 2 informations ?
>>>>>
>>>>> Thanks in advance
>>>>>
>>>>> regards
>>>>>
>>>>>
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