[Kamailio-Users] uac_replace_from unexpected behavior

Thu Mar 18 16:49:38 CET 2010

Daniel,

   Sure thing -- I will shoot it off shortly, thanks!

Sincerely,
Brandon Armstead

On Thu, Mar 18, 2010 at 7:11 AM, Daniel-Constantin Mierla <miconda at gmail.com
> wrote:

>  Hello,
>
>
> On 03/16/2010 03:05 PM, Brandon Armstead wrote:
>
> Daniel,
>
>     I did do a check and "" quotes are printing in xlog for $fn.
>
>
> can you send the sip trace for such case? I tested with options and "" is
> removed.
>
> Cheers,
> Daniel
>
>
>
> Thanks!
>
> Sincerely,
> Brandon Armstead
>
> On Tue, Mar 16, 2010 at 7:32 AM, Daniel-Constantin Mierla <
> miconda at gmail.com> wrote:
>
>>  Hello,
>>
>>
>> On 03/16/2010 01:22 PM, Brandon Armstead wrote:
>>
>> Daniel,
>>
>>     So if I am to set it to "none" it should give me the desired affects,
>> and not alter back to the original From header upon transmission of an ACK?
>>
>>
>> auto mode should do everything (update/restore From (or To)) for within
>> dialog requests, if you used uac_replace_from() for initial INVITE,
>> therefore this is the best mode. However, it adds an extra parameter (pretty
>> long) to RR header and some UA strips it when building the reply.
>>
>> If you know you are in a SIP2.0 (rfc3261) compatible environment, then you
>> can use other modes.
>>
>> In sip 2.0 a dialog is identified by call-id, from-tag and to-tag, which
>> are not affected by From updates. However, in previous version of sip, From
>> URI and To URI were used to identify the sip dialog, therefore, in order to
>> be compatible with sip 1.0 then you should not change From/To.
>>
>> In auto mode, the From/To are restored to be safe with sip 1.0 devices.
>>
>> Btw, if you have time, can you please print the $fn in xlog for ACK and
>> send it here? Will show if quotes are considered part of display name. If
>> not, I will look later in sources.
>>
>> Cheers,
>> Daniel
>>
>>
>> Sincerely,
>> Brandon Armstead
>>
>> On Tue, Mar 16, 2010 at 7:05 AM, Daniel-Constantin Mierla <
>> miconda at gmail.com> wrote:
>>
>>>
>>>
>>> On 03/16/2010 01:03 PM, Brandon Armstead wrote:
>>>
>>> Value of uac_restore_mode is not set so "auto".
>>>
>>>
>>>  but if it is not set to something else, this is the default value.
>>>
>>> Cheers,
>>> Daniel
>>>
>>>
>>>
>>> Thanks!
>>>
>>> On Tue, Mar 16, 2010 at 7:00 AM, Daniel-Constantin Mierla <
>>> miconda at gmail.com> wrote:
>>>
>>>> Hello,
>>>>
>>>>
>>>> On 03/16/2010 12:52 PM, Brandon Armstead wrote:
>>>>
>>>> Daniel,
>>>>
>>>>    This is 1.5 and there is nothing between the quotes "".
>>>>
>>>>  the question is whether the display name attribute in From header
>>>> structure includes the quotes or not -- this is to be revealed by code.
>>>>
>>>>
>>>>
>>>> The last time I tried to remove_hf, and then append_hf(From) or To
>>>> header, it seemed to break call flow completely?
>>>>
>>>>
>>>>  It can break in case you have non-RFC3261 compliant devices.
>>>>
>>>> What is the value of uac module parameter from_restore_mode?
>>>>
>>>> If it is auto or not set, then it is not the same behavior as with
>>>> remove_hf/append_hf.
>>>>
>>>>
>>>>   I will give it another go, however if you have any further thoughts it
>>>> is much appreciated, thanks!
>>>>
>>>>  Going to check the sources and come back with more details.
>>>>
>>>> Cheers,
>>>> Daniel
>>>>
>>>>
>>>>
>>>> Sincerely,
>>>> Brandon Armstead
>>>>
>>>> On Tue, Mar 16, 2010 at 6:44 AM, Daniel-Constantin Mierla <
>>>> miconda at gmail.com> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>>
>>>>> On 03/16/2010 02:30 AM, Brandon Armstead wrote:
>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> As always thank you ahead of time for your help and input!
>>>>>>
>>>>>> I am currently calling uac_replace_from("", "") in effort to "leave
>>>>>> uri" and "toss away display name"
>>>>>>
>>>>>> Which does seem to work....... for the initial INVITE
>>>>>>
>>>>>> However upon receiving an ACK with an empty display, however "" <-
>>>>>> quotations, it does not clear the display "" which is causing issues with
>>>>>> one of my upstream vendors.
>>>>>>
>>>>>> Example / Scenario:
>>>>>>
>>>>>> From: "" <sip:uri at host>
>>>>>>
>>>>>> Expected Result upon uac_replace_from("",""):        From:
>>>>>> <sip:uri at host>
>>>>>>
>>>>>> Current Result: From: "" <sip:uri at host>
>>>>>>
>>>>>> As you can see it is not stripping the "" empty display quotes.
>>>>>>
>>>>>> Any thoughts / ideas / suggestions to get my desired affect?
>>>>>>
>>>>>>   could be that display name is set to empty string (what is between
>>>>> double quotes) and in this case is nothing to replace -- I have to
>>>>> doublecheck the sources. Is it 1.5 or 3.0?
>>>>>
>>>>> Are you using From auto-replacing mode? If not, a solution for now is
>>>>> to do From update using header manipulation functions:
>>>>>
>>>>> remove_hf("From");
>>>>> append_hf("From: <$fu>;tag=$ft\r\n", "From");
>>>>>
>>>>> Cheers,
>>>>> Daniel
>>>>>
>>>>> --
>>>>> Daniel-Constantin Mierla
>>>>> Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
>>>>> * http://www.asipto.com/index.php/sip-router-masterclass/
>>>>>
>>>>>
>>>>
>>>> --
>>>> Daniel-Constantin Mierla
>>>> Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
>>>> * http://www.asipto.com/index.php/sip-router-masterclass/
>>>>
>>>>
>>>
>>> --
>>> Daniel-Constantin Mierla
>>> Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
>>> * http://www.asipto.com/index.php/sip-router-masterclass/
>>>
>>>
>>
>> _______________________________________________
>> Kamailio (OpenSER) - Users mailing listUsers at lists.kamailio.orghttp://lists.kamailio.org/cgi-bin/mailman/listinfo/usershttp://lists.openser-project.org/cgi-bin/mailman/listinfo/users
>>
>>
>> --
>> Daniel-Constantin Mierla
>> Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
>> * http://www.asipto.com/index.php/sip-router-masterclass/
>>
>>
>
> _______________________________________________
> Kamailio (OpenSER) - Users mailing listUsers at lists.kamailio.orghttp://lists.kamailio.org/cgi-bin/mailman/listinfo/usershttp://lists.openser-project.org/cgi-bin/mailman/listinfo/users
>
>
> --
> Daniel-Constantin Mierla
> Kamailio SIP Router Masterclass, Berlin, March 22-26, 2010
> * http://www.asipto.com/index.php/sip-router-masterclass/
>
>
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