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<p class="MsoNormal"><span style="color:#1F497D">Bogdan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Yes we do.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We first set the packet forward destination using the drouting module:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in"><span style="color:#1F497D">route_to_carrier("MGC", "$var(gateway_attrs)", "$var(carrier_attrs)")<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Then modify the TO and FROM using the uac module:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> construct_uri("sip", "$tU", "$avp(mgc_domain)", "", "", $avp(uri));<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> uac_replace_to("$avp(uri)");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> construct_uri("sip", "$fU", "$avp(mgc_domain)", "", "", $avp(uri));<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> uac_replace_from("$avp(uri)");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We also replace the contact header, however for that we use the textops module:
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> subst('/^Contact: ([^@]*@)[a-zA-Z_0-9.:-]+(.*)$/Contact: \1$var(contact)\2/ig');<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">And finally we forward the packet using tm:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> if (!t_relay())<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> sl_reply_error();<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Dave<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><u><span style="font-size:18.0pt;font-family:"Arial","sans-serif";color:#3366FF">______________________________________ ______</span></u><span style="font-size:18.0pt;font-family:"Arial","sans-serif""> <br>
<br>
</span><b><span style="font-size:4.0pt;font-family:"Arial","sans-serif";color:#244061"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#244061">Dave Sidwell
</span></b><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#244061">| <b>NEC Enterprise Communication Technologies | Senior Manager - SW Development<o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#244061"> 4 Forest Parkway | Shelton, CT 06484</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#1F497D">
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</span><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#244061">(203) 926-5424
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<span style="font-size:7.5pt;font-family:"Tms Rmn","serif";color:#3366FF"> </span><span style="font-family:Wingdings;color:#3366FF">*</span><span style="font-size:7.5pt;font-family:"Tms Rmn","serif";color:#3366FF">
</span><u><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#3366FF">david.sidwell@necect.com</span></u><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> Bogdan-Andrei Iancu [mailto:bogdan@opensips.org]
<br>
<b>Sent:</b> Thursday, August 21, 2014 10:41 AM<br>
<b>To:</b> Sidwell, David; OpenSIPS users mailling list<br>
<b>Subject:</b> Re: [OpenSIPS-Users] Relay Subscribe/Notify for MWI<o:p></o:p></span></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><tt><span style="font-size:10.0pt">David, </span></tt><span style="font-size:10.0pt;font-family:"Courier New","serif""><br>
<br>
<tt>Do you use the "uac" module to do the changes over the TO/FROM headers or ??</tt><br>
<br>
<tt>Regards,</tt><br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre><a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<p class="MsoNormal">On 21.08.2014 16:31, Sidwell, David wrote:<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="color:#1F497D">Hi Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Currently the SUBSCRIBE is not handled locally, but forwarded to a server which implements RFC 3842.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">In my application, the UAC’s register with OpenSIPS (Registrar module) which in turn registers them with the external server (Registrant module).</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">The TO/FROM headers of further requests are modified to reflect the domain of the server and the requests are forwarded to the server.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">In-dialog responses are automatically modified with the reverse modifications and forwarded back to the UAC.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">This works fine for all requests except the SUBSCRIBE/NOTIFY.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Ideally the re-SUBSCRIBE would contain the same modifications, and the NOTIFY’s would have the reverse modifications.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">(I am OK with manually making the transformations, but the re-SUBSCRIBE’s do not seem to be processed via the route script)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">I am open to a solution where opensips handles the subscribes (presence_mwi?), but I don’t see any way I could retrieve the MWI indication from the server.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Dave</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> Bogdan-Andrei Iancu [<a href="mailto:bogdan@opensips.org">mailto:bogdan@opensips.org</a>]
<br>
<b>Sent:</b> Thursday, August 21, 2014 3:54 AM<br>
<b>To:</b> OpenSIPS users mailling list; Sidwell, David<br>
<b>Subject:</b> Re: [OpenSIPS-Users] Relay Subscribe/Notify for MWI</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi David,</span></tt><span style="font-size:10.0pt;font-family:"Courier New","serif""><br>
<br>
<tt>How do you change the TO / FROM hdrs in initial SUBSCRIBE ?? Is the SUBSCRIBE handled locally (opensips as presence server) or you forward it further ?</tt><br>
<br>
<tt>Regards,</tt><br>
<br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre><a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<p class="MsoNormal">On 16.08.2014 00:07, Sidwell, David wrote:<o:p></o:p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I am using OpenSIPS in an application relaying SIP messaging between clients and server with modifications to the “To”, “From” and “Contact” headers.<o:p></o:p></p>
<p class="MsoNormal">This is working well for call control, however the server also provides MWI via Subscribe/Notify, and unfortunately this does not work properly.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">There are two basic issues:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Although the initial SUBSCRIBE can be modified and relayed successfully, it cannot create a dialog. Any subsequent “in-dialog” re-subscription messages seem to be automatically relayed but the “To”, “From” and “Contact” modifications
are not included. These re-subscribes do NOT go through the configuration file route script so there is no opportunity to make any additional modifications.<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>“In-dialog” NOTIFY messages from the server do not get routed back to the client, but appear in the configuration file route script with “totags”. These can be manually routed back to the subscriber but any attempt to modify the To and
From headers fails (due to the presence of the totags).<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Questions:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo4"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Is there any way to configure OpenSIPS to allow for automatic relaying of the Subscribe/Notify messages in an application such as this?<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo4"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>Is there a way to make use of the Presence modules to achieve the same function (The server will not issue PUBLISH commands).<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Dave<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<pre>_______________________________________________<o:p></o:p></pre>
<pre>Users mailing list<o:p></o:p></pre>
<pre><a href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><o:p></o:p></pre>
<pre><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></pre>
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