[SR-Users] rtpengine inserted random line into sdp

[Andrew Chen]

Interesting.  Thanks for the tidbit.  I will play around with
msg_apply_changes and find the right place for it.

On Fri, Jun 26, 2020 at 9:01 AM Richard Fuchs <rfuchs at sipwise.com> wrote:

> Rtpengine takes and replaces the entire SDP body, so if there's another
> module also manipulating the SDP, one module won't see the changes made by
> the other one unless you call msg_apply_changes in between, leaving you
> with bits of string in the wrong places.
>
> Cheers
>
> On 26/06/2020 08.50, Andrew Chen wrote:
>
> Thanks Richard.
>
> I do have the nathelper module running but not rtpproxy.  How does
> nathelper cause this issue?
>
> On Fri, Jun 26, 2020 at 8:27 AM Richard Fuchs <rfuchs at sipwise.com> wrote:
>
>> Looks like you're using both rtpengine and some other SDP-modifying
>> module together, such as nathelper or rtpproxy, without calling
>> msg_apply_changes() in between.
>>
>> Cheers
>>
>> On 25/06/2020 16.46, Andrew Chen wrote:
>>
>> Hi forum,
>>
>> I'm starting my rtpengine project and I'm facing a strange problem with
>> rtpengine.  I am seeing this in the SDP part of the INVITE:
>>
>> a=rtcp:52021
>>
>> a=rtcp-mux
>>
>> 2001:470:7:3A7:0:0:0:2
>>
>> a=direction:active
>>
>> a=oldmediaip:54.153.25.234
>>
>> As you can see there is a random insert of the local kamailio IP in there
>> and I'm have tried the following to remove it but failed to succeed:
>>
>> - Remove in the offer the combination of ICE and
>> replace-session-connection flags
>> - Switched between rtpengine_offer and rtpengine_manage
>> - Restarted ngcp-rtpengine-daemon process
>> - Used sdpops function sdp_remove_line_by_preifx()
>>
>> Currently running Kamailio 5.1.2.
>>
>> I am running out of ideas.
>>
>> Any suggestions would be greatly appreciated.
>>
>> --
>> Andy Chen
>> Sr. Telephony Lead Engineer
>> achen@ <achen at thinkingphones.com>fuze.com
>>
>>
>>
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>
> --
> Andy Chen
> Sr. Telephony Lead Engineer
> 415 516 5535 (M)
> achen@ <achen at thinkingphones.com>fuze.com
>
>
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-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen at thinkingphones.com>fuze.com

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