[OpenSIPS-Users] rtpengine + manual SDP manipulations

David Villasmil david.villasmil.work at gmail.com
Sat Jan 18 11:17:01 EST 2020


Though reading through it, it may not be what your're looking for.
I think the SDP gets replaced when you call the rtpengine manage command.
Have you tried doing the replace _after_ calling the manage command?

Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337


On Sat, Jan 18, 2020 at 4:15 PM David Villasmil <
david.villasmil.work at gmail.com> wrote:

> with:
>
>
> https://www.kamailio.org/docs/modules/stable/modules/rtpengine.html#rtpengine.f.rtpengine_offer
>
> 5.2.  rtpengine_offer([flags])
> *replace-origin* - flags that IP from the origin description (o=) should
> be also changed.
>
>
>
> Regards,
>
> David Villasmil
> email: david.villasmil.work at gmail.com
> phone: +34669448337
>
>
> On Sat, Jan 18, 2020 at 4:11 PM David Villasmil <
> david.villasmil.work at gmail.com> wrote:
>
>> I believe you can use this:
>>
>> replace
>>
>> Similar to the flags list. Controls which parts of the SDP body should
>> be rewritten. Contains zero or more of:
>>
>>    -
>>
>>    origin
>>
>>    Replace the address found in the *origin* (o=) line of the SDP body.
>>    Corresponds to *rtpproxy* o flag.
>>    -
>>
>>    session connection or session-connection
>>
>>    Replace the address found in the *session-level connection* (c=) line
>>    of the SDP body. Corresponds to *rtpproxy* c flag.
>>
>>
>> Have you tried this?
>>
>> Regards,
>>
>> David Villasmil
>> email: david.villasmil.work at gmail.com
>> phone: +34669448337
>>
>>
>> On Sat, Jan 18, 2020 at 3:59 PM Jeff Pyle <jeff at ugnd.org> wrote:
>>
>>> Hello,
>>>
>>> I'm running OpenSIPS 2.4 and rtpengine 7.0.  I have the following
>>> commands in my script:
>>>
>>> route[sanitize_sdp] {
>>>         subst_body('/^o=\S+ /o=- /');
>>>         subst_body('/^s=.*/s=-\r/');
>>> }
>>>
>>> This works fine, unless I'm also using rtpengine, in which case these
>>> subst_body() changes are lost.  In the past with rtpproxy this worked as
>>> expected.
>>>
>>> I understand the potential conflicts when manipulating the SDP using
>>> multiple methods at the same time.  My question is if there is a way to
>>> execute this type of manual manipulation in a way that's compatible with
>>> rtpengine, or achieve similar results within the rtpengine module itself?
>>> My purpose is to remove the origin and session text if possible to further
>>> obfuscate source network information.
>>>
>>>
>>> - Jeff
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opensips.org
>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>
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