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<tt>Hi Dmitry,<br>
<br>
<tt>In failure route you re-process the original <tt>request
(INVITE) and not the 488 reply - the r<tt>eply is just the
trigger<tt>.<br>
<tt><tt>Do you change the INVITE SDP before the <tt>first
atte<tt>mpt (which ends <tt>w<tt>ith 488) ? Or you
change it for the first <tt>time in the
failure route ?</tt><br>
<br>
Regards,<br>
</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a>
OpenSIPS Summit 2018
<a class="moz-txt-link-freetext" href="http://www.opensips.org/events/Summit-2018Amsterdam">http://www.opensips.org/events/Summit-2018Amsterdam</a>
</pre>
<div class="moz-cite-prefix">On 02/01/2018 05:34 PM, Dmitry wrote:<br>
</div>
<blockquote type="cite"
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<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Hello
Bogdan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Thank
you for advice.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">I
catched 488 and can send INVITE from failure_route, but I
can’t modify body inside it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">The
main goal is change SAVP profile to AVP when 488 received.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">I
tried to do it via rtpengine_offer function. It doesn’t
work. I guess, it try to read the body from response (488 in
my case) but not from request.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">I
tried to rewrite body via remove_body_part and add_body_part
functions, it also doesn’t work.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">So,
I don’t understand how exactly rewrite body in failure_route
before do t_relay().<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">In
addition, I tried making a new branch (via append_branch
function and via branch_route). It just duplicate my
re-INVITE without changing the body.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Could
you please drop a hint (example on few lines of code) how to
do it?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="color:windowtext;mso-fareast-language:RU"
lang="EN-US">From:</span></b><span
style="color:windowtext;mso-fareast-language:RU"
lang="EN-US"> Bogdan-Andrei Iancu
[<a class="moz-txt-link-freetext" href="mailto:bogdan@opensips.org">mailto:bogdan@opensips.org</a>] <br>
<b>Sent:</b> Wednesday, January 31, 2018 6:55 PM<br>
<b>To:</b> OpenSIPS users mailling list
<a class="moz-txt-link-rfc2396E" href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a>; Dmitry
<a class="moz-txt-link-rfc2396E" href="mailto:netaskd@gmail.com"><netaskd@gmail.com></a><br>
<b>Subject:</b> Re: [OpenSIPS-Users] Handling 488 on a
leg B<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hello
Dmitry,</span></tt><span
style="font-size:10.0pt;font-family:"Courier New""><br>
<br>
<tt>What you want to do is called (in SIP) serial forking.
Use failure_route{} to catch the 488 and to add a create a
new branch (with modified body) .</tt><br>
<br>
<tt>See: <a
href="http://www.opensips.org/Documentation/Script-Routes-2-3#toc3"
moz-do-not-send="true">http://www.opensips.org/Documentation/Script-Routes-2-3#toc3</a></tt><br>
<br>
<tt>Regards,</tt><br>
<br>
</span><span style="font-size:12.0pt;mso-fareast-language:RU"><o:p></o:p></span></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com" moz-do-not-send="true">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Summit 2018<o:p></o:p></pre>
<pre> <a href="http://www.opensips.org/events/Summit-2018Amsterdam" moz-do-not-send="true">http://www.opensips.org/events/Summit-2018Amsterdam</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 01/30/2018 02:56 PM, Dmitry wrote:<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US">Hello all,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Could you say how can
I re-send INVITE with changed SDP to B-leg after receive
488 from it?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Call flow:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">-> A-leg INVITE</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"><- A-leg 100</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">-> B-leg INVITE</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"><- B-leg 100</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"><- B-leg 488 – I
catch it, and want to send INVITE again with properly SDP</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">-> B-leg ACK</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"><-A-leg 488</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">-> B-leg ACK</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for any advice.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Cheers!</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;mso-fareast-language:RU"><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Users mailing list<o:p></o:p></pre>
<pre><a href="mailto:Users@lists.opensips.org" moz-do-not-send="true">Users@lists.opensips.org</a><o:p></o:p></pre>
<pre><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users" moz-do-not-send="true">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;mso-fareast-language:RU"><o:p> </o:p></span></p>
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