[SR-Users] can kamailio send 183 to caller

[赵国杰]

Hello,
      I forgot to add route(RELAY) after the append_branch(). This brings another problem. Say the original INVITE is from A to B, what I want is:
          1. fork 1 more INVITE to freeswitch 
          2. discard the original A to B INVITE and wait for the http_async_query returns. When returns, the final destiation is determined, say C. Then send the INVITE to C. 


     However, after append_branch(), then original INVITE is sent to B anyway. How do I block the A to B INVITE?


Thanks

At 2017-12-01 15:13:10, "赵国杰" <zhaoguojie2010 at 163.com> wrote:

Hello Sammy,
     Yes, I want the kamailio to play ring-back music immediately after it receive the INVITE.  My plan is to append a branch to freeswitch and let freeswitch to play the music. The problem is append_branch() does not work in the following context:


if(is_method("INVITE")) {
                append_branch("sip:prompt-tone at freeswitch");
                xlog("append branch");
                t_newtran();
                $http_req(hdr) = "Content-Type: application/json";
                $http_req(body) = $_s({"cmuid": "$var(cmuid)"});
                http_async_query("http://127.0.0.1:8080", "HTTP_REPLY");
}


if I remove the last 4 lines everything works fine. Otherwise, no forked INVITE will be sent to freeswitch. Unfortunately, I need the http_async_query to find the proper callee. Any suggestions?


Thanks

At 2017-11-30 23:49:59, "SamyGo" <govoiper at gmail.com> wrote:

Hi,
While Brandon is right, you can do absolutely do that but w/o any SDP or progress media in there. I'd ask why you want to do that! If you want to feed some ring-back music I'd advise you to append a branch to a media-server like asterisk and then let that do it for you.


So here's one way of doing that.

if(is_method("INVITE")){
         append_branch("sip:183 at 192.168.1.5:5060");
...
}


where IP is of asterisk and dialplan is configured to provider Progress() with media. 


Again, it depends on why you want it?


Regards,
Sammy


On Wed, Nov 29, 2017 at 11:13 PM, Brandon Armstead <brandon at cryy.com> wrote:

if(is_method(“INVITE”)){ .....


sl_send_reply(“183”, “Ringing”); ....


}


On Wed, Nov 29, 2017 at 6:44 PM 赵国杰 <zhaoguojie2010 at 163.com> wrote:

Hello guys, 
     Is it possible for kamailio to initiate a 183 to caller?


Thanks 




 

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