[Kamailio-Users] uac_replace_from unexpected behavior

Brandon Armstead brandon at voipo.com
Tue Mar 16 13:03:59 CET 2010


Value of uac_restore_mode is not set so "auto".

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/
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/users/attachments/20100316/65c0fd64/attachment.htm>


More information about the Users mailing list