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<p>Thanks Hugh, <br>
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<p>Wondering why 12 and not 11 ? ;-) Anyway, seems like we're hitting this limit. This is just a consequence from crashing application trying to re-register again and again. <br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> sr-users-bounces@lists.sip-router.org <sr-users-bounces@lists.sip-router.org> on behalf of Waite, Hugh <hugh.waite@acision.com><br>
<b>Sent:</b> Tuesday, June 17, 2014 6:46 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List<br>
<b>Subject:</b> Re: [SR-Users] s-cscf - limit of entries for 1 contact</font>
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Hi Dan,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">There is a hard coded limit on the number of branches that a SIP transaction can have in Kamailio, i.e. number of forked destinations</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">It is currently set to 12 (defined in config.h).</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Some people with other use cases have recompiled with a higher limit, but this may cause further problems for you (extra requests to generate & send and responses
to process when the dead connections timeout)</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">You’ve already asked on this list about the ‘allow single registration’ feature in ims_registrar and the tcp connection lost detection, which are the usual
solutions to this.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Another solution may be to try integrating the outbound functionality into the IMS example configs which can detect when flows fail, and use that to delete
the dead location entries.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Regards,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Hugh</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D"> </span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Ciprus, Daniel<br>
<b>Sent:</b> 17 June 2014 22:02<br>
<b>To:</b> Kamailio (SER) - Users Mailing List<br>
<b>Subject:</b> [SR-Users] s-cscf - limit of entries for 1 contact</span></p>
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<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">All, </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">is any of you aware about limitation how many reg entries can be stored in s-cscf for 1 contact ? From what I'm observing here : s-cscf can have up to 12 reg entries for
1 contact and then other entries are silently discarded. </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">Use case: </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">- crash of app happens 12 times </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">- app retries to register</span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">- s-cscf sends back 200 OK with 13 contacts </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">- another app registers and tries to send SIP MESSAGE to 1st app </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">Result: message never gets delivered and tcpdump shows 12 messages sent out to p-cscf but not 13th one which is actually live session between client and proxy. </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">thanks</span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">Dan</span></p>
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