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<div class="moz-cite-prefix"><tt>Hello merlin,<br>
<br>
First of all, from a user's perspective, a Post-Dial Delay of up
to 30 seconds should be quite annoying. Your SIP logic will also
increase the amount of traffic received by your platform, due to
lots of retransmissions for all failed calls.<br>
<br>
That being said, here is what you should add in order to make it
work:<br>
<br>
t_newtran();<br>
...<br>
while (...) {<br>
if (t_was_cancelled()) {<br>
t_reply("487", "Request Cancelled");<br>
exit;<br>
}<br>
...<br>
}<br>
<br>
Best regards,<br>
</tt>
<pre class="moz-signature" cols="72">Liviu Chircu
OpenSIPS Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
On 03.03.2015 10:45, <a class="moz-txt-link-abbreviated" href="mailto:merlin.li@tsingch.com">merlin.li@tsingch.com</a> wrote:<br>
</div>
<blockquote cite="mid:2015030316451426487717@tsingch.com"
type="cite">
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charset=windows-1252">
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<div><span></span>Hi,</div>
<div><br>
</div>
<div>Or is there a way i can break the while loop in the route
block when i receive the CANCEL request?</div>
<div><br>
</div>
<hr style="width: 210px; height: 1px;" size="1" align="left"
color="#b5c4df">
<div><span>
<div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE:
10pt">
<div><a class="moz-txt-link-abbreviated" href="mailto:merlin.li@tsingch.com">merlin.li@tsingch.com</a></div>
</div>
</span></div>
<blockquote style="margin-top: 0px; margin-bottom: 0px;
margin-left: 0.5em;">
<div> </div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE:
12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef;
PADDING-BOTTOM: 8px; PADDING-TOP: 8px">
<div><b>From:</b> <a moz-do-not-send="true"
href="mailto:merlin.li@tsingch.com">merlin.li@tsingch.com</a></div>
<div><b>Date:</b> 2015-03-03 16:14</div>
<div><b>To:</b> <a moz-do-not-send="true"
href="mailto:users@lists.opensips.org">users</a></div>
<div><b>Subject:</b> how to cancel an INVITE before the
callee receive it?</div>
</div>
</div>
<div>
<div class="FoxDiv20150303164323968249">
<div><span></span>Hi all,</div>
<div><br>
</div>
<div>Let me describe my scenario first.</div>
<div><br>
</div>
<div>if the callee is not online, opensips will wait for
30s.</div>
<div>During the 30s, if the callee be online, opensips will
send the invite to it.</div>
<div><br>
</div>
<div><span style="font-family: "" microsoft="" yahei=""
ui'";="" font-size:="" 14px;="" color:="" rgb(0,=""
0,="" 0);="" background-color:="" rgba(0,=""
font-weight:="" normal;="" font-style:=""
normal;text-decoration:="" none;'="">
$avp(timeout) = 30 ;<br>
while( !lookup("location","m") ){<br>
if( $avp(timeout)==0 ){<br>
send_reply("420","Can not find the callee!");<br>
exit;<br>
}<br>
sleep("1");<br>
$avp(timeout) = $avp(timeout)-1;<br>
}</span></div>
<div><br>
</div>
<div>This works well, the only problem is the caller can not
cancel it during that 30s</div>
<div><span style="font-family: "" microsoft="" yahei=""
ui'";="" font-size:="" 14px;="" color:="" rgb(0,=""
0,="" 0);="" background-color:="" rgba(0,=""
font-weight:="" normal;="" font-style:=""
normal;text-decoration:="" none;'="">t_cancel_branch()
only can be used in onreply_route, but at that time,
callee is offline.</span></div>
<div><span style="font-family: "" microsoft="" yahei=""
ui'";="" font-size:="" 14px;="" color:="" rgb(0,=""
0,="" 0);="" background-color:="" rgba(0,=""
font-weight:="" normal;="" font-style:=""
normal;text-decoration:="" none;'=""><br>
</span></div>
<div><span style="font-family: "" microsoft="" yahei=""
ui'";="" font-size:="" 14px;="" color:="" rgb(0,=""
0,="" 0);="" background-color:="" rgba(0,=""
font-weight:="" normal;="" font-style:=""
normal;text-decoration:="" none;'="">My question is :</span></div>
<div><span style="font-family: "" microsoft="" yahei=""
ui'";="" font-size:="" 14px;="" color:="" rgb(0,=""
0,="" 0);="" background-color:="" rgba(0,=""
font-weight:="" normal;="" font-style:=""
normal;text-decoration:="" none;'="">Is it possible that
terminate a request in route block?</span></div>
<div><br>
</div>
<div><br>
</div>
<hr style="width: 210px; height: 1px;" size="1" align="left"
color="#b5c4df">
<div><span>
<div style="MARGIN: 10px; FONT-FAMILY: verdana;
FONT-SIZE: 10pt">
<div><a class="moz-txt-link-abbreviated" href="mailto:merlin.li@tsingch.com">merlin.li@tsingch.com</a></div>
</div>
</span></div>
</div>
</div>
</blockquote>
<br>
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