[SR-Users] using set_body_multipart and append_body_part on on_reply routes

[Sergey Basov]

Hi, David

I will try to collect trace for normal SIP-I session and e-mail it to you.

8 нояб. 2016 г. 5:55 PM пользователь "david" <descartin at bts.io> написал:

> hello Sergey
>
> yes i was using them with a IAM ISUP part inside the SIP response, so they
> were doing something, but it's not correct so it must be an ACM, ANM
> depending on the response.
> i made some more tests and i saw the issue is not with append_body_part
> which seems it's doing ok.
>
> it's with set_body_multipart when in responses seems cannot detect the
> body last boundary and close it by -- so the ISUP is malformed
>
> i could workaround this by parsing the body and adding it
>
> route[SIPISUP] {
>     msg_apply_changes();
>     set_body_multipart();
>     msg_apply_changes();
>     $var(isup) = "\x06\x12\x25\x01\x39\x02\x12\x01\x00";
>     append_body_part("$var(isup)","application/isup;version=itu-
> t92+","signal;handling=optional");
>     msg_apply_changes();
>     $avp(s:xxxx) = $rb;
>     $var(xxxx) = $(avp(s:xxxx){re.subst,/(.*)--unique-boundary-1(.*)/\1--
> unique-boundary-1--\2/sg});
>     set_body("$var(xxxx)","multipart/mixed;boundary=\"
> unique-boundary-1\"");
> }
>
> this way at least we have a base ISUP part for a 1XX response
>
> best regards
> david
>
>
>
>
> El lun, 07-11-2016 a las 23:08 +0200, Sergey Basov escribió:
>
>
> Hi David,
>
> if you look at source code of the sipt modulehttps://github.com/kamailio/kamailio/blob/master/modules/sipt/sipt.c
>
> functions sipt_destination & sipt_set_calling works only for ISUP_IAM.
>
> But as I know from my tests ISUP encapsulation must be only in invite,
> and is optional for other messages.
> --
> Best regards,
> Sergey Basov                     e-mail: sergey.v.basov at gmail.com
>
> tel: (+38067) 403-62-54
>
>
> 2016-11-07 19:19 GMT+02:00 david <descartin at bts.io>:> hello all>> i'm using kam version 4.4.1 and i would like to generate an ISUP part on the> 1xx,2xx responses to a remote carrier since the fsw i send the calls to> cannot handle ISUP SDP.> despite seeing in the doc that those functions cannot be used there and only> in  REQUEST_ROUTE, FAILURE_ROUTE, BRANCH_ROUTE, i tried and it works....> partially, because it seems it doesnt create the last boundary and it> creates a next boundary with an empty "Encapsulated multipart part: ">> this the the route i call from onreply_route>> route[SIPISUP] {>     set_body_multipart();>     msg_apply_changes();>     $var(isup) => "\x01\x12\x49\x01\x0a\x03\x02\x0a\x08\x84\x90\x33\x41\x72\x17\x01\x06\x0a\x08\x04\x13\x93\x70\x21\x73\x23\x10\x08\x01\x01\x00";>> append_body_part("$var(isup)","application/isup;version=itu-t92+","signal;handling=optional");>     msg_apply_changes();>     sipt_destination($rU, 31, 4);>     sipt_set_calling($fU, 4, 0, 3);>     msg_apply_changes();> }>> am i doing something wrong? how can i set this to end the SDP with last> boundary?>> thanks a lot and regards> david>>> _______________________________________________> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list> sr-users at lists.sip-router.org> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>
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