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<p class="MsoNormal"><span style="color:#1F497D">Thanks, Daniel. I’ll update the docs to clarify this, if I get a moment.<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">Cheers<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">Phil<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="color:windowtext;mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="color:windowtext;mso-fareast-language:EN-GB"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>Daniel-Constantin Mierla<br>
<b>Sent:</b> 04 January 2016 08:06<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org><br>
<b>Subject:</b> Re: [SR-Users] Example kamailio.cfg t_check_trans()<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<span style="font-size:12.0pt;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal">On 31/12/15 12:39, Phil Lavin wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi there,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">The example config that Kamailio ships with contains this block of code in
<span style="font-family:"Courier New",serif">request_route</span>:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif"># handle retransmissions</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif">if(t_precheck_trans()) {</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif"> t_check_trans();</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif"> exit;</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif">}</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif">t_check_trans();</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I am not fully understanding the requirement for either of the
<span style="font-family:"Courier New",serif">t_check_trans()</span> here. As far as I can see from the documentation,
<span style="font-family:"Courier New",serif">t_check_trans()</span> returns a boolean value and does not modify any data internally.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Can anyone help me find out what the relevance of the <span style="font-family:"Courier New",serif">
t_check_trans()</span> calls is?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:EN-GB">t_check_trans() is used to detect retransmissions. If a retransmission is received, then the last reply (if any) needs to be sent back, then t_check_trans()
does an 'exit' internally.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<o:p></o:p></span></p>
<pre>-- <o:p></o:p></pre>
<pre>Daniel-Constantin Mierla<o:p></o:p></pre>
<pre><a href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a><o:p></o:p></pre>
<pre>Book: SIP Routing With Kamailio - <a href="http://www.asipto.com">http://www.asipto.com</a><o:p></o:p></pre>
<pre><a href="http://miconda.eu">http://miconda.eu</a><o:p></o:p></pre>
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