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" <zhaoguojie2...@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@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" <govoi...@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@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 <bran...@cryy.com> wrote:

if(is_method(“INVITE”)){ .....


sl_send_reply(“183”, “Ringing”); ....


}


On Wed, Nov 29, 2017 at 6:44 PM 赵国杰 <zhaoguojie2...@163.com> wrote:

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


Thanks 




 

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