[OpenSIPS-Users] SIP SDP rfc1918 address fix

Satish Patel satish.txt at gmail.com
Wed Apr 26 20:43:05 EDT 2017 

Yes, whenever fix_nated_sdp() fiction run it produce that error which I mentioned in my previous email. Every single time. 

Sent from my iPhone

> On Apr 26, 2017, at 4:52 PM, Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:
> 
> So below is the SDP OpenSIPS receives (from network) and when doing fix_nated_sdp() on that SDP leads to the "c=" errors ?
> 
> Regards,
> 
> Bogdan-Andrei Iancu
>  OpenSIPS Founder and Developer
>  http://www.opensips-solutions.com
> 
> OpenSIPS Summit May 2017 Amsterdam
>  http://www.opensips.org/events/Summit-2017Amsterdam.html
> 
>> On 04/26/2017 08:44 PM, Satish Patel wrote:
>> Here is my payload again we have custom application which is using SER
>> so some of them are custom values, This is the payload after i apply
>> fix_nated_sdp() function.
>> 
>> 
>> Max-Forwards: 16.
>> Content-Type: application/sdp.
>> Content-Length: 418.
>> Supported: path, 100rel.
>> P-hint: LOCAL.
>> P-hint: ALIASED OUTBOUND.
>> P-hint: DIRECT-RTP.
>> .
>> v=0.
>> o=user1 53655765 2353687637 IN IP4 192.168.1.8.
>> s=-.
>> c=IN IP4 173.71.121.4.
>> t=0 0.
>> m=audio 6000 RTP/AVP 0.
>> a=rtpmap:127 VANI/32000.
>> a=fmtp:127 ver=3;mode=3;sub-types=1,7;codecs=0x26.
>> a=rtpmap:111 SIREN14-3D/32000.
>> a=fmtp:111 bitrate=32000.
>> a=vx_payload_hdr_ver:2.
>> a=rtpmap:0 PCMU/8000.
>> a=vx_join_audio:1.
>> a=vx_join_text:0.
>> a=vx_jc:60.
>> a=setup:both.
>> a=vx_rtcp:0.
>> a=direction:active.
>> a=oldmediaip:192.168.1.8.
>> 
>> On Wed, Apr 26, 2017 at 6:18 AM, Bogdan-Andrei Iancu
>> <bogdan at opensips.org> wrote:
>>> Hi Satish,
>>> 
>>> For the mime test, you can use the has_body() function:
>>> http://www.opensips.org/html/docs/modules/2.2.x/sipmsgops.html#idp3886992
>>> 
>>> About the error - could you post the actual SDP payload generating those
>>> errors ?
>>> 
>>> Regards,
>>> 
>>> Bogdan-Andrei Iancu
>>>   OpenSIPS Founder and Developer
>>>   http://www.opensips-solutions.com
>>> 
>>> OpenSIPS Summit May 2017 Amsterdam
>>>   http://www.opensips.org/events/Summit-2017Amsterdam.html
>>> 
>>> 
>>>> On 04/25/2017 10:35 PM, Satish Patel wrote:
>>>> We have some custome Voice solution and in-house media server so right
>>>> now i don't care about PORT all i need correct IP address.
>>>> 
>>>> I have tried following and it fixed issue but i am seeing following
>>>> error in logs
>>>> 
>>>> if (method=="INVITE") {
>>>>          if(search("^Content-Type:.*application/sdp")) {
>>>>          fix_nated_sdp("3");
>>>>          };
>>>> };
>>>> 
>>>> 
>>>> Error:
>>>> 
>>>> ERROR: extract_mediaip: no `c=' in SDP
>>>> ERROR: extract_mediaip: no `c=' in SDP
>>>> 
>>>> Do you know what does that means and how to fix that issue?
>>>> 
>>>> On Mon, Apr 24, 2017 at 11:41 PM, Alex Balashov
>>>> <abalashov at evaristesys.com> wrote:
>>>>> The intent of my questions was to get what you think about what you
>>>>> actually want to accomplish. fix_nated_sdp() allows you to replace the
>>>>> IP with the received signalling IP:
>>>>> 
>>>>> http://www.opensips.org/html/docs/modules/2.1.x/nathelper.html#id293899
>>>>> 
>>>>> But what about the port?
>>>>> 
>>>>>> On Mon, Apr 24, 2017 at 11:39:14PM -0400, Satish Patel wrote:
>>>>>> 
>>>>>> after google found bunch of post where people suggesting use
>>>>>> fix_nated_sdp()  is that right approach ?
>>>>>> 
>>>>>> On Mon, Apr 24, 2017 at 11:25 PM, Alex Balashov
>>>>>> <abalashov at evaristesys.com> wrote:
>>>>>>> Yes, but RTP can come from a different address than the signalling
>>>>>>> (SIP). What sense would there be in substituting the source of the SIP
>>>>>>> message in there?
>>>>>>> 
>>>>>>>> On Mon, Apr 24, 2017 at 11:23:30PM -0400, Satish Patel wrote:
>>>>>>>> 
>>>>>>>> I meant "origin public address of client"  if c line isn't public then
>>>>>>>> media never work.
>>>>>>>> 
>>>>>>>> c=IN IP4 192.168.1.8.
>>>>>>>> 
>>>>>>>> It should be
>>>>>>>> 
>>>>>>>> c=IN IP4 <public_ip_of_client>
>>>>>>>> 
>>>>>>>> On Mon, Apr 24, 2017 at 11:04 PM, Alex Balashov
>>>>>>>> <abalashov at evaristesys.com> wrote:
>>>>>>>>> Satish,
>>>>>>>>> 
>>>>>>>>> When you say "origin public address", do you mean the external source
>>>>>>>>> address and port of the SIP message, or the incoming RTP stream?
>>>>>>>>> 
>>>>>>>>>> On Mon, Apr 24, 2017 at 11:00:40PM -0400, Satish Patel wrote:
>>>>>>>>>> 
>>>>>>>>>> In my INVITE/SDP i am seeing sometime rfc1918 address which i want
>>>>>>>>>> fix
>>>>>>>>>> and replace it with origin public address. ex
>>>>>>>>>> 
>>>>>>>>>> I am seeing following info in INVITE
>>>>>>>>>> 
>>>>>>>>>> v=0.
>>>>>>>>>> o=amsip 0 0 IN IP4 192.168.1.8.
>>>>>>>>>> s= .
>>>>>>>>>> c=IN IP4 192.168.1.8.
>>>>>>>>>> t=0 0.
>>>>>>>>>> m=audio 22530 RTP/AVP 127 111 0 101.
>>>>>>>>>> 
>>>>>>>>>> _______________________________________________
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>>>>>>>>> --
>>>>>>>>> Alex Balashov | Principal | Evariste Systems LLC
>>>>>>>>> 
>>>>>>>>> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>>>>>>>>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>>>>>>>> 
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>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
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>>>>>>> --
>>>>>>> Alex Balashov | Principal | Evariste Systems LLC
>>>>>>> 
>>>>>>> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>>>>>>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>>>>>> 
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>>>>> --
>>>>> Alex Balashov | Principal | Evariste Systems LLC
>>>>> 
>>>>> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>>>>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>>>> 
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>

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