[Serusers] Re: [Serdev] nathelper updated to support RTP proxy

[Maxim Sobolev]

Start rtpproxy with `-f' flag which will prevent it from going into the 
daemon mode, make a test call and send me rtpproxy's output.

-Maxim

Younger Wang wrote:

> Hi Maxim,
> 
> I made the test. There is some problems:
> 1.   The source of RTP proxy did not compile. I replaced Makefile with
>       Makefile.linux. The following error message is given:
>       cc  -o main.o -c main.c
>       main.c: In function `setbindhost':
>       main.c:83: structure has no member named `sin_len'
>       make: *** [main.o] Error 1
> 
>       I commented line 83 in main.c and it compiled and the executive run.
> 
> 2    I run ser with the example script rtpproxy.cfg (modified to work in my
> network). rtpproxy is also started. I made a nat call and here is the debug
> message:
> 
>  0(29497) WARNING: could not rev. resolve 192.17.1.173
> Listening on
>               192.17.1.173 [192.17.1.173]:5060
> Aliases:
> WARNING: no fork mode
> textops - initializing
> stateless - initializing
>  0(0) INFO: udp_init: SO_RCVBUF is initially 65535
>  0(0) INFO: udp_init: SO_RCVBUF is finally 131070
>  0(29497) ERROR: extract_mediaip: no `c=' in SDP
>  0(29497) ERROR: get_rtpp_port: can't read reply from a RTP proxy
>  0(29497) WARNING: get_body_len: Content-TYPE header absent!let's assume the
> content is text/plain ;-)
>  0(29497) ERROR: on_reply processing failed
>  0(29497) WARNING: get_body_len: Content-TYPE header absent!let's assume the
> content is text/plain ;-)
>  0(29497) ERROR: on_reply processing failed
>  0(29497) ERROR: extract_mediaip: no `c=' in SDP
>  0(29497) ERROR: get_rtpp_port: can't read reply from a RTP proxy
>  0(29497) ERROR: on_reply processing failed
>  0(29497) ERROR: extract_mediaip: no `c=' in SDP
>  0(29497) ERROR: get_rtpp_port: can't read reply from a RTP proxy
>  0(29497) WARNING: get_body_len: Content-TYPE header absent!let's assume the
> content is text/plain ;-)
>  0(29497) ERROR: on_reply processing failed
>  0(29497) WARNING: get_body_len: Content-TYPE header absent!let's assume the
> content is text/plain ;-)
>  0(29497) ERROR: on_reply processing failed
>  0(29497) ERROR: extract_mediaip: no `c=' in SDP
>  0(29497) ERROR: get_rtpp_port: can't read reply from a RTP proxy
>  0(29497) ERROR: on_reply processing failed
> 
>     In fact, it should not work because I did not tell ser  how to find
> rtpproxy. But I did not find any information to do so.
> 
> 3.  In rtpproxy.cfg, I found the following script:
> 
> if (search("User-Agent: Cisco ATA.*")) {
>                 setflag(1); # remember this is ATA
>                 force_rport();
>                 fix_nated_contact();
> 
>    What force_rport() is for?  And in which module is it defined?
> 
> 4.  There is two option or parameters for rtpproxy.
>      rtpproxy: usage: rtpproxy [-f] [-l address]
> 
>      Is there more information about its usage other than message above?
> 
> 5.  In README of module nathelper, I found:
> 
> Name:   fix_nated_sdp()
> Params: mode - 0x01 (add direction=active), 0x02 (rewrite media IP
>         address with source address of the message)
> Desc:   Rewrites SDP body in accordance with mode flag
> Example:        if (search("User-Agent: Cisco ATA.*") {fix_nated_sdp(3);};
> 
> Does fix_nated_sdp(3) means direction=active and rewrite media IP address
> with source address of the message?  And what does direction=active means?
> 
>      And:
> 
> Name:   force_rtp_proxy
> Params: none
> 
> So what does mean?
> 
> 
> Your reply is so soon, Maxim.
> 
> Younger Wang
> 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Maxim Sobolev" <sobomax at portaone.com>
> To: <serusers at lists.iptel.org>
> Cc: <serdev at lists.iptel.org>
> Sent: Sunday, July 06, 2003 10:16 AM
> Subject: [Serdev] nathelper updated to support RTP proxy
> 
> 
> 
>>Folks,
>>
>>Today I've updated nathelper module to support RTP proxy. It would
>>be nice if somebody can test it on platforms other than FreeBSD,
>>because I don't have an access to such boxes right now. The RTP
>>proxy itself can be downloaded from:
>>
>>https://demo.portaone.com/~sobomax/PortaSIP/rtpproxy/
>>
>>Any feedback is greatly appreciated.
>>
>>-Maxim
>>P.S. I've committed it to the HEAD, those with 0.8.11 prerelease
>>please apply the following patch:
>>
>>https://demo.portaone.com/~sobomax/nathelper.diff
>>
>>_______________________________________________
>>Serdev mailing list
>>serdev at lists.iptel.org
>>http://lists.iptel.org/mailman/listinfo/serdev
> 
> 
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