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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Let me answer your last question first.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Asterisk doesn’t handle multiple Stasis applications connecting with the same name. The relationship between Asterisk and Stasis application
is one to one (one web socket per application name). However, you can get round this using an ARI proxy (see below). Using an ARI proxy allows you to<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Have multiple instances of your application run on multiple servers<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Provide load balancing between application servers<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Failover support for your application<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">There are two implementations of an ARI proxy. The first written by me, in .NET (supports mono)can be found here
<a href="https://github.com/skrusty/AsterNET-ARI-Proxy">https://github.com/skrusty/AsterNET-ARI-Proxy</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The second is written in GoLang and can be found here:
<a href="https://github.com/nvisibleinc/go-ari-proxy">https://github.com/nvisibleinc/go-ari-proxy</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">You can read about the concepts behind ARI proxy on my blog.
<a href="http://www.xdev.net/2015/09/18/distributed-applications-with-ari/">http://www.xdev.net/2015/09/18/distributed-applications-with-ari/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">With regards to stopping new calls in Asterisk, you can use the stop graceful cli command to prevent new calls from being processed
on that asterisk box.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hope that helps a little,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Ben<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> asterisk-app-dev-bounces@lists.digium.com [mailto:asterisk-app-dev-bounces@lists.digium.com]
<b>On Behalf Of </b>Nitesh Bansal<br>
<b>Sent:</b> 13 May 2016 14:56<br>
<b>To:</b> Asterisk Application Development discussion <asterisk-app-dev@lists.digium.com><br>
<b>Subject:</b> [asterisk-app-dev] Moving the Asterisk Bridge from one Asterisk to another<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<o:p></o:p></p>
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<p class="MsoNormal">I'm working on an ARI based bridging application.<o:p></o:p></p>
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<p class="MsoNormal">My concern is how to gracefully handle the failovers, upgrades.<o:p></o:p></p>
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<p class="MsoNormal">In case of planned upgrade, 0<br>
I can see following possibilities but I have no clue about how they<br>
will work out?<br>
1. Move the Bridge to the new Asterisk?<o:p></o:p></p>
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<p class="MsoNormal">2. Bridge the old asterisk to the new asterisk, but don't forward any new<o:p></o:p></p>
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<p class="MsoNormal"> calls to the Asterisk under upgrade. Wait for call count to drop to zero<o:p></o:p></p>
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<p class="MsoNormal"> for Asterisk under upgrade.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">3. Let first Asterisk run until the call count drops to zero, keep accepting calls<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">for the existing bridge, but forward any new Bridge request to the new Asterisk.<o:p></o:p></p>
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<p class="MsoNormal">How does Asterisk behaving if multiple ARI clients connect with Asterisk for the same<o:p></o:p></p>
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<p class="MsoNormal">Stasis application?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Any ideas/recommendations?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Nitesh<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">No virus found in this message.<br>
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Version: 2016.0.7597 / Virus Database: 4568/12208 - Release Date: 05/11/16<o:p></o:p></p>
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