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<p><tt>You could persist it at dialog level, once the 200 OK reply
arrives in an onreply_route, like so:</tt></p>
<p><tt><br>
</tt></p>
<p><tt>onreply_route [store_attr] {<br>
</tt></p>
<p><tt> $dlg_val(callee_attr) = </tt><tt><span><span>$(avp(attr)[$T_branch_idx])</span></span></tt></p>
<p><tt><span><span>}</span></span></tt></p>
<pre class="moz-signature" cols="72">Liviu Chircu
OpenSIPS Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 29.08.2017 20:33, Rodrigo Pimenta
Carvalho wrote:<br>
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<p>Hi Liviu.</p>
<p><br>
</p>
<p>Thank you for your reply!</p>
<p><br>
</p>
<p>I guess the second INVITE is a Re-INVITE, as you commented.</p>
<p>In this case, is it possible to keep stored the value of <tt>$avp(attr)</tt>
and use it when necessary even after receiving the Re-INVITE?</p>
<p><br>
</p>
<p>----------<br>
</p>
<p><br>
</p>
<p>Yes we have a retry, not a parallel forked call, but just
when the Re-INVITE is received by OpenSIPS. By other side, the
first INVITE is for a parallel forked call, if I'm well
understanding the SIP here.</p>
<p>The first INVITE is:</p>
<p><br>
</p>
<div> SIP Message: INVITE <a class="moz-txt-link-freetext" href="sip:g1r2u3p4o5@127.0.0.1">sip:g1r2u3p4o5@127.0.0.1</a> SIP/2.0<br>
<span> </span>Via: SIP/2.0/TLS
127.0.0.1:42194;rport;branch=z9hG4bKPjd3128578-0158-4c58-8c1c-676aa864d8ca;alias<br>
<span> </span>Max-Forwards: 70<br>
<span> </span>From: "ext1"
<a class="moz-txt-link-rfc2396E" href="sip:intercomB_RYg7tf4xx6JV@127.0.0.1"><sip:intercomB_RYg7tf4xx6JV@127.0.0.1></a>;tag=469b3a48-1548-4af6-8e03-a5c855ce85f4<br>
<span> </span>To: <a class="moz-txt-link-rfc2396E" href="sip:g1r2u3p4o5@127.0.0.1"><sip:g1r2u3p4o5@127.0.0.1></a><br>
<span> </span>Contact: "ext1"
<a class="moz-txt-link-rfc2396E" href="sip:intercomB_RYg7tf4xx6JV@127.0.0.1:42194;transport=TLS;ob"><sip:intercomB_RYg7tf4xx6JV@127.0.0.1:42194;transport=TLS;ob></a>;+sip.ice<br>
<span> </span>Call-ID:
22cb74fc-3d3b-4a37-9572-32f48c9943ff<br>
<span> </span>CSeq: 21431 INVITE<br>
<span> </span>Route:
<a class="moz-txt-link-rfc2396E" href="sip:intercomB_RYg7tf4xx6JV@127.0.0.1;transport=tls;lr"><sip:intercomB_RYg7tf4xx6JV@127.0.0.1;transport=tls;lr></a><br>
<span> </span>Allow: PRACK, INVITE, ACK, BYE, CANCEL,
UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS<br>
<span> </span>Supported: replaces, 100rel, timer,
norefersub<br>
<span> </span>Session-Expires: 1800<br>
<span> </span>Min-SE: 90<br>
<span> </span>Content-Type: application/sdp<br>
<span> </span>Content-Length: 1267<br>
<br>
There is more than one registered (on-line) subscriber <span>g1r2u3p4o5.
So, <span>
g1r2u3p4o5</span> has more than one AOR. I have 3 devices
online for the subscriber
<span><span>g1r2u3p4o5</span></span>.<br>
The reply SIP OK comes from another network (not the local
one), from IP <span>10.0.60.246</span>. After such reply,
the Re-INVITE is:<br>
</span><span><br>
</span></div>
<br>
<div><span> </span>SIP Message: INVITE
<a class="moz-txt-link-freetext" href="sip:g1r2u3p4o5@10.0.60.246:59673;transport=TLS">sip:g1r2u3p4o5@10.0.60.246:59673;transport=TLS</a> SIP/2.0<br>
<span> </span>Via: SIP/2.0/TLS
192.168.0.81:54188;rport;branch=z9hG4bKPjdde63995-7ed0-436a-983f-61d0e5df9498;alias<br>
<span> </span>Max-Forwards: 70<br>
<span> </span>From: "ext1"
<a class="moz-txt-link-rfc2396E" href="sip:intercomB_RYg7tf4xx6JV@127.0.0.1"><sip:intercomB_RYg7tf4xx6JV@127.0.0.1></a>;tag=469b3a48-1548-4af6-8e03-a5c855ce85f4<br>
<span> </span>To:
<a class="moz-txt-link-rfc2396E" href="sip:g1r2u3p4o5@127.0.0.1"><sip:g1r2u3p4o5@127.0.0.1></a>;tag=393a402c<br>
<span> </span>Contact: "ext1"
<a class="moz-txt-link-rfc2396E" href="sip:intercomB_RYg7tf4xx6JV@127.0.0.1:42194;transport=TLS;ob"><sip:intercomB_RYg7tf4xx6JV@127.0.0.1:42194;transport=TLS;ob></a>;+sip.ice<br>
<span> </span>Call-ID:
22cb74fc-3d3b-4a37-9572-32f48c9943ff<br>
<span> </span>CSeq: 21433 INVITE<br>
<span> </span>Route:
<a class="moz-txt-link-rfc2396E" href="sip:icchw.jflddns.com.br:5061;transport=tls;lr;did=d53.353e0122"><sip:icchw.jflddns.com.br:5061;transport=tls;lr;did=d53.353e0122></a><br>
<span> </span>Allow: PRACK, INVITE, ACK, BYE, CANCEL,
UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS<br>
<span> </span>Supported: replaces, 100rel, timer,
norefersub<br>
<span> </span>Session-Expires: 1800;refresher=uac<br>
<span> </span>Min-SE: 90<br>
<span> </span>Content-Type: application/sdp<br>
<span> </span>Content-Length: 332<br>
<br>
In this moment I need to know if the device (callee) is in
another network, in fact, to take some fixes in SDP of INVITEs
and SIP OKs.<br>
The <span><span>$(avp(attr)[$T_branch_idx])</span></span>
should have the information that I need.<br>
<br>
If it is not possible to keep the <span><span>$(avp(attr)[$T_branch_idx])</span></span>
stored, is it possible to know if a device is in another
network when it is a callee?<br>
<br>
Any hint will be very helpful !!<br>
<br>
Best regards.<br>
</div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
color="#000000" face="Calibri, sans-serif"><b>De:</b>
Users <a class="moz-txt-link-rfc2396E" href="mailto:users-bounces@lists.opensips.org"><users-bounces@lists.opensips.org></a> em nome de
Liviu Chircu <a class="moz-txt-link-rfc2396E" href="mailto:liviu@opensips.org"><liviu@opensips.org></a><br>
<b>Enviado:</b> terça-feira, 29 de agosto de 2017 12:34<br>
<b>Para:</b> <a class="moz-txt-link-abbreviated" href="mailto:users@lists.opensips.org">users@lists.opensips.org</a><br>
<b>Assunto:</b> Re: [OpenSIPS-Users]
$(avp(attr)[$T_branch_idx]) is NULL for second INVITE. How
to solve it ?</font>
<div> </div>
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<div>
<p><tt>Hi Rodrigo,</tt></p>
<p><br>
</p>
<p><tt>Just trying to understand the flow here - could it be
actually a Re-INVITE that goes through your sequential
routing block, thus lookup() is not called, leaving
$avp(attr) NULL throughout that transaction?<br>
</tt></p>
<p><tt><br>
</tt></p>
<p><tt>Regardless of the above, in OpenSIPS terms, each
"branch" points to a different destination. In our case,
we're talking about a retry, not a serial/parallel
forked call. Which means that you should only bother
with $T_branch_idx if a lookup() could yield more than
one device to be contacted for the same AoR.</tt></p>
<p><tt><br>
</tt></p>
<p><tt>Best regards,<br>
</tt></p>
<pre class="moz-signature" cols="72">Liviu Chircu
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<div class="moz-cite-prefix">On 29.08.2017 18:05, Rodrigo
Pimenta Carvalho wrote:<br>
</div>
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<p><br>
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<p>Dear SIPusers,</p>
<p><br>
</p>
<p>In my project I use to keep a valuable information in
table location. This is about the state of a
subscriber's localization.</p>
<p>I have to read such information for the callees,
every time a new branch is created and every time a
INVITE is answered with SIP OK.</p>
<p>So, my OpenSIPS configuration has something similar
to the following code:</p>
<p><br>
</p>
<p><span>1 route{</span></p>
<p>2 ... // hidden code for simplification.<br>
</p>
<p>3 <span>lookup("location","m")</span></p>
<p>4 ...<br>
</p>
<p>5 <span> route(relay);</span><br>
</p>
<p>6 }</p>
<p><br>
</p>
<p><span>7 route[relay]</span>{</p>
<div>8 if (is_method("INVITE"))
{
<br>
9 ...<br>
10
t_on_branch("per_branch_ops");
<br>
11
t_on_reply("handle_nat");
<br>
12
t_on_failure("missed_call");
<br>
13 } </div>
14 ...
<p>15 }</p>
<p><br>
</p>
<p><span>16 branch_route[per_branch_ops] { <br>
17 ....</span></p>
<p><span><span>18 $(avp(attr)[$T_branch_idx])</span><br>
</span></p>
<p><span>19 ...<br>
</span></p>
<p><span>20 }</span></p>
<p><span><br>
</span></p>
<p><span><span>21 onreply_route[handle_nat] {</span><br>
</span></p>
<p><span>22 ...</span></p>
<p><span>23 <span>$(avp(attr)[$T_branch_idx])</span><br>
</span></p>
<p><span>24 ...<br>
</span></p>
<p><span>25 }</span></p>
<p>26 ...<br>
</p>
<p><br>
</p>
<p>In a determined call, when the OpenSIPS receives the
INVITE and then a SIP OK (200), the code gets right
value in lines 18 and 23.</p>
<p>In such call, the SIP OK (from callee) offers a kind
of video that the caller can't support. In this case
the caller sends another SIP INVITE with inactive
video (SDP).</p>
<p>In this moment, OpenSIPS gets this second INVITE and
create a new branch.</p>
<p>However, for this new branch, lines 18 and 23 give me
NULL for <span><span>$(avp(attr)[$T_branch_idx])</span></span>.</p>
<p><br>
</p>
<p>How to solve this issue?</p>
<p><br>
</p>
<p>Any hint will be very helpful!!</p>
<p><br>
</p>
<p>Best regards!</p>
<p><br>
</p>
<p>P.S.: I'm not expert in SIP.<br>
</p>
<p><br>
</p>
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