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<p>Hello,<br>
</p>
given that this question was asked few times in the past, I put it
in the FAQ:<br>
<br>
-
<a class="moz-txt-link-freetext" href="https://www.kamailio.org/wiki/tutorials/faq/main#how_is_the_sip_request_retrans">https://www.kamailio.org/wiki/tutorials/faq/main#how_is_the_sip_request_retrans</a><br>
<br>
Hope the explanation there is clear enough, if not ask more here and
I will complete with further details.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 12.01.18 07:39, Abdelmuhaimen Seaudi
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABFmVg4T5a9pOdCROi574wnOf9+D7aWe3DyyQV+kabkVH+of3w@mail.gmail.com">
<div dir="auto">Hi.
<div dir="auto"><br>
</div>
<div dir="auto">In the below part from kamailio.cfg, why didn't
we just exit if t_precheck_trans returns true ?</div>
<div dir="auto"><br>
</div>
<div dir="auto">Why did we run t_check_trans, although there
might be another process already running the other
t_check_trans ?</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div dir="auto"># handle retransmissions</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>if
(!is_method("ACK")) {</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>if(t_precheck_trans())
{</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>t_check_trans();</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>exit;</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>}</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>t_check_trans();</div>
<div dir="auto"><br>
</div>
<div dir="auto"><span class="Apple-tab-span" style="white-space:pre"> </span>}</div>
</div>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - March 5-7, 2018, Berlin - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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