I found the root cause of it. This is because I am terminating sessions on Kamailio, by sending 200 ok from config. I don’t specify callee “Contact” at that point. Even though there are active chat sessions, dialog are not shown with cmd below.

 

I am attaching relevant config below -

Questions:  

1.      Can dlg_refer work without callee contact details? Or

2.      Should I make up some contact and put in the 200 OK below Or

3.      Should I handcraft a REFER message and send to caller instead?

 

Please advise.

Config section:

    sl_send_reply("100", "Trying");
    sl_send_reply("180", "Ringing");

    append_to_reply("Record-Route: <sip:MY_PUBLICIP_ADDR:$Rp;lr;nat=yes>\r\n");

    pv_printf("$var(sessid)", "s.$(pp).$(var(cnt)).$(RANDOM)");
    $var(rbody) = "v=0\r\n";
    $var(rbody) = $var(rbody) + "o=- 3688213899 3688213900 IN IP4 MY_IP_ADDR\r\n";
    $var(rbody) = $var(rbody) + "s=Kamailio\r\n";
    $var(rbody) = $var(rbody) + "t=0 0\r\n";
    $var(rbody) = $var(rbody) + "m=message 2855 TCP/TLS/MSRP *\r\n";
    $var(rbody) = $var(rbody) + "c=IN IP4 MY_IP_ADDR\r\n";
    $var(rbody) = $var(rbody) + "a=path:msrps://MY_IP_ADDR:MY_MSRP_PORT/" + $var(sessid) + ";tcp\r\n";
    $var(rbody) = $var(rbody) + "a=accept-types:message/cpim text/* image/* application/im-iscomposing+xml\r\n";
    $var(rbody) = $var(rbody) + "a=accept-wrapped-types:text/* image/* application/im-iscomposing+xml\r\n";
    $var(rbody) = $var(rbody) + "a=setup:passive\r\n";

    set_reply_body("$var(rbody)", "application/sdp");
    sl_send_reply("200", "OK");

 

Thanks

Pranathi

 

From: Daniel-Constantin Mierla [mailto:miconda@gmail.com]
Sent: Friday, May 05, 2017 2:43 AM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; Pranathi Venkatayogi <pvenkatayogi@cyracom.com>
Subject: Re: [SR-Users] How does dlg_bridge work?

 

Hello,

is the dialog already answered at that time? Can you see it via kamcmd dlg.list ?

Cheers,
Daniel

 

On 04.05.17 22:48, Pranathi Venkatayogi wrote:

When I use dlg_refer I get the following error:

 

2689 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: exec: *** cfgtrace:failure_route=[HTTP_ALLOCATE_RESPONSE] c=[routingdev.cfg] l=567 a=26 n=dlg_refer

2690 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: DEBUG: dialog [dlg_hash.c:690]: dlg_lookup(): ref dlg 0x7f92d19835e8 with 1 -> 2

2691 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: DEBUG: dialog [dlg_hash.c:692]: dlg_lookup(): dialog id=10603 found on entry 2058

2692 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: DEBUG: dialog [dlg_hash.c:452]: build_new_dlg(): new dialog on hash 2058

2693 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: ERROR: dialog [dlg_req_within.c:85]: build_dlg_t(): no contact available

2694 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: ERROR: dialog [dlg_transfer.c:188]: dlg_refer_callee(): failed to create dlg_t

2695 May  4 16:09:56 devsip00 /sbin/kamailio[24617]: DEBUG: dialog [dlg_hash.c:922]: dlg_unref_helper(): unref op on 0x7f92d19835e8 with 1 from dlg_hash.c:940

 

 

From: Pranathi Venkatayogi
Sent: Thursday, May 04, 2017 5:28 AM
To: 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org>
Subject: How does dlg_bridge work?

 

I have a TEXT call from cust1@somedomain to Kamailio. I have an agent who is logged in, but is not in any call yet.

I want now refer cust1@somedomain to talk to agent directly. How do I do that?

 

I tried -  dlg_bridge("$dlg(from_contact)", "$var(agentSipAddress)","");

I get an “audio call” from “Kamailio” to customer, but nothing happens on the agent side.

 

I tried “dlg_refer” as well but nothing happens at all.

 

Should I handcraft “Refer” message using uac module and send to “customer” instead?

Please suggest.

 

Thanks

Pranathi Venkatayogi

System Developer II

(520) 745-9447 x4466

www.cyracom.com

 

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