[OpenSIPS-Users] Fix_nated_sdp

[Bogdan-Andrei Iancu]

Hi Lawrence,

have you printed just before the "fix_nated_sdp" the $si ? Also, for 
testing purposes, try to replace the $si param with a fix ip, like 
"11.11.11.11" to see if it works.

I just tested with 1.6.0 and seams ok ....I admit, I did not test with 1.4

Regards,
Bogdan

Lawrence Na (MY-RND at Vyke) wrote:
> Hi Bogdan,
>
> Thx for the reply and appreciate your help. I've turn on the debug to level
> 9. Below are the log:
>
> Nov 20 10:19:31 OpenSIPS2 /usr/local/sbin/opensips[1912]: DBG:
> ==============START==============, si=y.y.y.y
> Nov 20 10:19:31 OpenSIPS2 /usr/local/sbin/opensips[1912]:
> DBG:core:parse_headers: flags=ffffffffffffffff
> Nov 20 10:19:31 OpenSIPS2 /usr/local/sbin/opensips[1912]:
> DBG:nathelper:check_content_type: type <application/sdp> found valid
> Nov 20 10:19:31 OpenSIPS2 /usr/local/sbin/opensips[1912]: DBG:
> ==============END==============, si=y.y.y.y
>
> I've printed out the $si variable before and after the fix_nated_sdp. Both
> IP are the same which depicts A party external IP.
>
> A -> Proxy -> B, is the INVITE packet flow from A party to B party in a P2P
> scenario. I've attach the screenshot of the diagram which I'm trying to
> explain in my previous email. I guess the plain text email screw all the
> text position.
>
> BTW, I'm still using Opensips 1.4.5 for our lab.
>
> -------------------------------------------------------------------
> Regards,
> Lawrence Na Chong Guan
> -------------------------------------------------------------------
>
>
>   
>> From: Bogdan-Andrei Iancu <bogdan at voice-system.ro>
>> Reply-To: OpenSIPS users mailling list <users at lists.opensips.org>
>> Date: Thu, 19 Nov 2009 19:38:51 +0200
>> To: OpenSIPS users mailling list <users at lists.opensips.org>
>> Subject: Re: [OpenSIPS-Users] Fix_nated_sdp
>>
>>
>> Hi Lawrence,
>>
>> Are you sure you SIP request is not spiralling on the proxy: A - > Proxy
>> -> Proxy -> B ?? simply print the $si variable from script (via xlog)
>> just before the fix_nated_sdp().
>>
>> Regards,
>> Bogdan
>>
>> Lawrence Na (MY-RND at Vyke) wrote:
>>     
>>> Hi All,
>>>
>>> I¹ve got a problem with fix_nated_sdp, whenever I call the method in
>>> the request route it doesn¹t seems to take effect. My INVITE c= & o=
>>> list the proxy IP instead of the IP which I¹ve set in the method 2nd
>>> argument. The weird thing, fix_nated_sdp in my reply route seems to
>>> work just fine. Below are part of my scripts:
>>>
>>> Route[4] {
>>> if(to_uri=~"^sip:([A-Z][a-z])([A-Z][a-z]).+@*")
>>> {
>>> xlog("L_INFO", "DBG: P2P Call [$fu] -> [$tu]");
>>>
>>> if(!lookup("location"))
>>> {
>>> xlog("L_INFO", "DBG: P2P Peer not found [$tu] from [$fu]($si)");
>>> sl_send_reply("404", "User Offline");
>>> exit;
>>> }
>>>
>>> if(isbflagset(6))
>>> {
>>> xlog("L_INFO", "DBG: NATed P2P Call [$fu] -> [$tu], force RTP");
>>> fix_nated_sdp(³10², ³$si²);
>>> }
>>> }
>>> }
>>>
>>> onreply_route[1]
>>> {
>>> if(client_nat_test("7"))
>>> {
>>> fix_contact();
>>> setbflag(6);
>>> }
>>>
>>> if(status=~"(180)|(183)|2[0-9][0-9]")
>>> {
>>> if(search("^Content-Type:[ ]*application/sdp"))
>>> {
>>> if(isbflagset(6) && (!to_uri=~"sip:[+][0-9][0-9][0-9].+@*"))
>>> {
>>> xlog("L_INFO", "DBG: Reply - S=$rs D=$rr F=$fu T=$tu [$rm], force RTP");
>>> fix_nated_sdp(³10², ³$si²);
>>> exit;
>>> }
>>> }
>>> }
>>>
>>> xlog("L_INFO", "DBG: Reply - S=$rs D=$rr F=$fu T=$tu [$rm]");
>>> }
>>>
>>> E.g:
>>> INVITE
>>> y.y.y.y 202.202.202.202 x.x.x.x(external IP)
>>> A ------------------> Proxy ------------------> B
>>> c=192.168.1.2 c=202.202.202.202
>>> o=192.168.1.2 o=202.202.202.202
>>>
>>> 200 response
>>> x.x.x.x 202.202.202.202 y.y.y.y (external IP)
>>> B ------------------> Proxy ------------------> A
>>> c=192.168.0.2 c=x.x.x.x
>>> o=192.168.0.2 o=x.x.x.x
>>>
>>> Hope there is some gurus out there able to shade some lights.
>>>
>>>       


-- 
Bogdan-Andrei Iancu
www.voice-system.ro