[Kamailio-Devel] Nathelper SDP message parsing from the Nortel softswitch

[Ovidiu Sas]

There is an SDP parser in the core which has support for multipart
content parsing:
http://kamailio.org/dokuwiki/doku.php/development:sdp-parsing
It is not yet integrated with the nathelper module.


Regards,
Ovidiu Sas

On Tue, Dec 23, 2008 at 6:59 AM, Andrew O. Zhukov
<gnugk at telegroup.com.ua> wrote:
> I have 2 questions:
>
> 1. Can someone try to parse invite message with multipart content in
> Mediaproxy?
> 2. Is it possible to fix a parsing of this kind of message in the
> nathelper module?
>
> I got the followed error set:
> ERROR:nathelper:check_content_type: invalid type for a message
> ERROR:nathelper:extract_body: content type mismatching
> ERROR:nathelper:force_rtp_proxy2_f: can't extract body from the message
> .....
> ERROR:nathelper:force_rtp_proxy2_f: incorrect port 0 in reply from rtp
> proxy
>
>
> Here is INVITE from Nortel.
>
> -----Skipped--------
>
> Max-Forwards: 69
> Supported: 100rel,x-nortel-sipvc,replaces,timer
> User-Agent: Nortel CS1000 SIP GW release_5.0 version_sse-5.00.31
>
> -----Skipped--------
>
> INVITE,ACK,BYE,REGISTER,REFER,NOTIFY,CANCEL,PRACK,OPTIONS,INFO,SUBSCRIBE,UPDATE
> Content-Type: multipart/mixed;boundary=unique-boundary-1
> Content-Length: 760
>
> --unique-boundary-1
> Content-Type: application/sdp
>
> v=0
> o=- 120 1 IN IP4 192.168.32.89
> s=-
> t=0 0
> m=audio 5200 RTP/AVP 0 8 18 101 111
> c=IN IP4 192.168.33.8
> a=fmtp:18 annexb=no
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
> a=rtpmap:111 X-nt-inforeq/8000
> a=ptime:30
> a=sendrecv
>
> --unique-boundary-1
> Content-Type:
> application/x-nt-mcdn-frag-hex;version=sse-5.00.31;base=x2611\015\012
> Content-Disposition: signal;handling=optional
>
> 05002702
> 0107130081900000a200
> 09090f00e9a083000100a700
> 1315070011fa0f00a10d02010102020100cc042a016d2f00
> 1e0403008183
> --unique-boundary-1
> Content-Type: application/x-nt-epid-frag-hex;version=sse-5.00.31;base=x2611
> Content-Disposition: signal;handling=optional
>
> 011201
> 00:02:b3:f7:80:16
> --unique-boundary-1--
>
> Thanks for respond in advance.
>
> Andrew.
>
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