[Kamailio-Users] NAThelper and multipart SDP
Daniel-Constantin Mierla
miconda at gmail.com
Mon Jun 22 17:34:45 CEST 2009
Can you check this patch I just committed?
http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=caef5ace2026fcb2a9dffb471e2cec6d843082f8
Basically, you simply can get the extract_body() function from
nathelper/nhelpr_funcs.c and replace it in kamailio.
Let me know if works ok now.
Thanks,
Daniel
On 06/22/2009 04:22 PM, Daniel-Constantin Mierla wrote:
> please send me the original and the new invite so I can see how the
> body is changed afterwards.
>
> Cheers,
> Daniel
>
> On 06/22/2009 03:23 PM, Pascal Maugeri wrote:
>> With your patch there is a small bug when re-constructing the
>> multipart payload:
>>
>> [...]
>> --Genaker-boundary
>> Content-Type: application/sdp
>>
>> v=0
>> [...]
>> a=fmtp:TBCP queuing=0; tb_priority=1; timestamp=0; tb_granted=0;
>> poc_sess_priority=1; poc_lock=0
>>
>>
>> *a=nortpproxy:yes--Genaker-boundary*
>> Content-Type: application/resource-lists+xml
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <resource-lists xmlns="urn:ietf:params:xml:ns:resource-lists"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
>> [...]
>>
>> --Genaker-boundary--
>>
>>
>> Observe the line "a=nortpproxy:yes--Genaker-boundary" : there are
>> CRLFs missing. And there two CRLF before "a=nortpproxy:yes". I guess
>> you're adding the CRLF in the incorrect order.
>>
>> We're progressing ;-)
>>
>> -pascal
>>
>> On Mon, Jun 22, 2009 at 11:36 AM, Daniel-Constantin Mierla
>> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>> Hello Pascal,
>>
>> I have just committed support for multipart bodies in sip router,
>> if works then I will backport to 1.5.
>>
>>
>> http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=1f41271e1c1b879217835b8b3fdbdc2680138f25
>>
>>
>>
>> Can you test it? Unfortunately I cannot do it these days properly
>> due to traveling. Patch should work pretty straightforward with
>> 1.5 though, if you want to test it directly there.
>>
>> Cheers,
>> Daniel
>>
>>
>> On 06/22/2009 11:30 AM, Pascal Maugeri wrote:
>>
>> I tried to install mediaproxy but it looks tricky to install
>> (many dependencies, including kernel specific configurations)
>> :-(
>> and I would like to stick to rtpproxy for performance reason.
>>
>> Do you believe the same workaround using textops/filter_body
>> can be used using rtpproxy ? I think yes as these are two
>> different things as said Juha.
>>
>> Regards,
>> Pascal
>>
>>
>> On Fri, Jun 19, 2009 at 9:26 PM, Pascal Maugeri
>> <pascal.maugeri at gmail.com <mailto:pascal.maugeri at gmail.com>
>> <mailto:pascal.maugeri at gmail.com
>> <mailto:pascal.maugeri at gmail.com>>> wrote:
>>
>>
>>
>> On Fri, Jun 19, 2009 at 9:13 PM, Juha Heinanen
>> <jh at tutpro.com <mailto:jh at tutpro.com>
>> <mailto:jh at tutpro.com <mailto:jh at tutpro.com>>> wrote:
>>
>> Pascal Maugeri writes:
>>
>> > So if I understand well (please correct me if I'm
>> wrong)
>> the "plan" is:
>> >
>> > 1º) I install MediaProxy and use Kamailio MEDIAPROXY
>> module
>> instead of
>> > rtpproxy/NATHelper
>> >
>> > 2º) filter the app/sdp part with
>> >
>> > if (has_body("multipart/mixed")) {
>> > if (filter_body("application/sdp") {
>> > remove_hf("Content-Type");
>> >
>> > append_hf("Content-Type:
>> application/sdp\r\n");
>> > } else {
>> >
>> > xlog("Body part application/sdp not found\n");
>> > }
>> > }
>>
>> you don't need to call filter_body if you use mediaproxy.
>>
>> > 3º) then engage the media proxy with
>> >
>> > if (method==INVITE && !has_totag()) {
>> >
>> > # We can also use a specific media relay if we
>> need to
>> > #$avp(s:media_relay) = "1.2.3.4";
>> > engage_media_proxy();
>> > }
>>
>> i have never used engage_media_proxy() functions,
>> because it
>> makes some
>> assumptions that are not generally true. i use
>> use_media_proxy() instead.
>>
>> > 4º) finally put the body part(s) that have been
>> removed in
>> 1º) and relay the
>> > INVITE to my next hop.
>> > I believe I can save the body part(s) in 1º)
>> and put
>> them back using
>> > set_body(txt, content_type).
>>
>> you don't need to do anything like that if you use
>> use_media_proxy()
>> function, because it does not remove anything.
>>
>>
>> Thanks Juha ! I can't wait for monday to test it :-)
>>
>> Have a nice week-end
>> Pascal
>>
>>
>> -- juha
>>
>>
>>
>>
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>>
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>>
>> -- Daniel-Constantin Mierla
>> http://www.asipto.com/
>>
>>
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>>
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>
--
Daniel-Constantin Mierla
http://www.asipto.com/
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