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<div class="moz-cite-prefix"><tt>Hi Igor,<br>
<br>
The CANCEL requests are propagating hop by hop (and not
end-to-end) - this means the request is re-generated by each
hop. This is why you cannot change it.<br>
<br>
What exactly are you trying to achieve here ?<br>
<br>
Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
On 04.08.2014 15:40, Igor Olhovskiy wrote:<br>
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<blockquote cite="mid:53DF7F25.7000202@gmail.com" type="cite">
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Hi!<br>
<br>
I've tried some modification of in-transaction CANCEL packets.<br>
Idea A call B, than A cancels call.<br>
Initial CANCEL:<br>
<br>
<font size="-2"><font color="red"><b>CANCEL</b></font>
sip:0919082171@XXXXXXX SIP/2.0 <br>
Via: SIP/2.0/UDP 31.172.143.70;rport;branch=<font color="green"><b>z9hG4bKHg59atZ9pDDHg</b></font>
<br>
Route: <sip:31.172.143.67:5060> <br>
Max-Forwards: 68 <br>
From: "2063259" <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:sip:2063259@31.172.143.70"><sip:2063259@31.172.143.70></a>;tag=<font
color="red"><b>N1D0tceygg3tN</b></font> <br>
To: <sip:0919082171@XXXXXXXX> <br>
Call-ID: <font color="blue"><b>ed5d0207-9675-1232-e38f-000c29eaa3c3</b></font>
<br>
CSeq: 63241643 <font color="red"><b>CANCEL</b></font> <br>
Reason: SIP;cause=487;text="ORIGINATOR_<font color="red"><b>CANCEL</b></font>"
<br>
Content-Length: 0 </font><br>
<br>
I've simply add <br>
<br>
if (is_method("CANCEL")) {<br>
...<br>
xlog("L_INFO", "CANCEL!");<br>
append_hf("X-Hint: CANCEL!\r\n");<br>
if (t_check_trans()) {<br>
xlog("L_INFO", "CANCEL is in transaction!");<br>
t_relay();<br>
}<br>
}<br>
<br>
In logs I see:<br>
<br>
CANCEL!<br>
CANCEL is in transaction!<br>
<br>
but I can't see appended header to outgoing CANCEL packet.<br>
<br>
Outgoing CANCEL is<br>
<br>
<br>
<font size="-2"><font color="red"><b>CANCEL</b></font>
sip:0919082171@XXXXXXX SIP/2.0 <br>
Via: SIP/2.0/UDP 31.172.143.67:5060;branch=<font color="green"><b>z9hG4bKed78.b56ef11.1</b></font>
<br>
From: "2063259" <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:sip:2063259@31.172.143.70"><sip:2063259@31.172.143.70></a>;tag=<font
color="red"><b>N1D0tceygg3tN</b></font> <br>
Call-ID: <font color="blue"><b>ed5d0207-9675-1232-e38f-000c29eaa3c3</b></font>
<br>
To: <sip:0919082171@XXXXXXX> <br>
CSeq: 63241643 <font color="red"><b>CANCEL</b></font> <br>
Max-Forwards: 70 <br>
Reason: SIP;cause=487;text="ORIGINATOR_<font color="red"><b>CANCEL</b></font>"
<br>
User-Agent: OpenSIPS (1.11.2-notls (x86_64/linux)) <br>
Content-Length: 0 </font><br>
<br>
<br>
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<br>
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</blockquote>
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