Re: out of dialog requests

I think the implementation of ftag and ttag is still incomplete, I
started in the summer, but I got side tracked (iirc, some missing parts
inside tm module) -- I need to refresh on it.

Meanwhile, there is a function exported by the tm module which can be used:

  -
https://www.kamailio.org/docs/modules/stable/modules/tm.html#tm.f.t_uac_send

On the other hand, just be careful, sending requests inside a dialog
needs to update the cseq for subsequent requests on the same direction.

Cheers,
Daniel

On 13.10.25 17:49, Sergio Charrua via sr-users wrote:
> Maybe this can help, I used this in an project a few years ago, and it
> worked fine.
> Just replace value to some of the $vars, and you should be good to go:
>
> # REFER to callee (keep original dialog identifiers)
> $uac_req(method) = "REFER";
>
> $uac_req(ruri)   = "sip:"+$var(to_uriU)+"@"+$var(SourceIP);
> /* URIs WITHOUT tags */
> $uac_req(furi)   = $var(from_uri);
> $uac_req(turi)   = $var(to_uri);
> /* Tags MUST be provided via ftag/ttag */
> $uac_req(ftag)   = $var(fromTAG);
> $uac_req(ttag)   = $var(toTAG);
>
> $uac_req(callid) = $var(callid);
> /* optional
> $uac_req(cseq)   = $T_req(cseq) + 1;
> */
>
> /* Any extra headers + empty body */
> $uac_req(hdrs) =
>     "Refer-To: " + $var(conf_uri2) + "\r\n" +
>     "Referred-By: " + $var(to_uri) + "\r\n" +
>     "Content-Length: 0\r\n";
>
> uac_req_send();
>
>
>
> Atenciosamente / Kind Regards / Cordialement / Un saludo,
>
> *
> *
>
> *Sérgio Charrua*
>
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> On Mon, Oct 13, 2025 at 5:13 PM Henning Westerholt via sr-users
> <[email protected]> wrote:
>
>     Hello Robert,
>
>      
>
>     yes, I’ve got a bit confused from your message, maybe I
>     misunderstood it.
>
>      
>
>     You want to send an out of dialog message, but want to re-use the
>     original Call-Id, From tag and To tag, which define the dialog.
>     This will create an in-dialog SIP message.
>
>      
>
>     Cheers,
>
>      
>
>     Henning
>
>      
>
>     *From:*Robert Boardman <[email protected]>
>     *Sent:* Montag, 13. Oktober 2025 16:42
>     *To:* Henning Westerholt <[email protected]>; Kamailio (SER) - Users
>     Mailing List <[email protected]>
>     *Subject:* Re: out of dialog requests
>
>      
>
>     Hi,
>
>     Yes, I have used this when the dtmf was coming via sip info as it
>     was in dialog, but as it is using the rtpegngine dtmf event_route,
>     its not in a specific dialog, and I think I need to construct it
>     using something like uac_req_send.
>
>     But I'm open to suggestions.
>
>     Rob
>
>      
>
>      
>
>     *Robert Boardman*
>
>     	
>
>     ​​​​
>
>     Solution Architect
>
>     	
>
>     ------------------------------------------------------------------------
>
>     *From:* Henning Westerholt <[email protected]>
>     *Sent:* Monday, October 13, 2025 15:11
>     *To:* Kamailio (SER) - Users Mailing List
>     <[email protected]>
>     *Cc:* Robert Boardman <[email protected]>
>     *Subject:* RE: out of dialog requests
>
>      
>
>     Hello,
>
>      
>
>     have you considered using the dialog module function for that?
>
>      
>
>     _https://kamailio.org/docs/modules/6.0.x/modules/dialog.html#dialog.f.dlg_refer_
>
>      
>
>     Cheers,
>
>      
>
>     Henning
>
>      
>
>     --
>
>     Henning Westerholt – _https://skalatan.de/blog/
>     <https://skalatan.de/blog/>_
>
>     Kamailio services – _https://gilawa.com <https://gilawa.com/>_
>
>      
>
>     *From:* Robert Boardman via sr-users <[email protected]>
>     *Sent:* Montag, 13. Oktober 2025 15:23
>     *To:* Kamailio (SER) - Users Mailing List
>     <[email protected]>
>     *Cc:* Robert Boardman <[email protected]>
>     *Subject:* [SR-Users] out of dialog requests
>
>      
>
>     Hi,
>
>     I'm trying to send a refer from a rtpengine dtmf event, its mostly
>     working but the uac_req_send always seems  to append new tags for
>     the from /to even though I specify the origionals in the .
>
>     The far end uses the tags and the callid to match the dialogs so
>     these need to be in the refer.
>
>     Example 
>
>             # REFER to callee
>
>             xlog("L_INFO", "Sending REFER using from uri $var(to_uri)\n");
>
>             $uac_req(method)="REFER";
>
>             $uac_req(ruri)="sip:"+$var(to_uriU)+"@"+$var(SourceIP);
>
>             $uac_req(furi)=$var(from_uri)+";tag="+$var(fromTAG);
>
>             $uac_req(turi)=$var(to_uri)+";tag="+$var(toTAG);
>
>             $uac_req(callid)=$var(callid);
>
>             $uac_req(hdrs)="Refer-To:" +  $var(conf_uri2) +
>     "\r\nReferred-By: " + $var(to_uri) + "\r\nContent-Length: 0\r\n\r\n";
>
>             uac_req_send();
>
>      
>
>     Is this possible?
>
>     Thanks for your help
>
>     Regards
>
>     Rob
>
>     *Robert Boardman*
>
>     Solution Architect
>
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