<div dir="ltr">yes i agree quite difficult to trace, here is the invite of the non-working one<div><br></div><div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">U 2018/04/19 04:39:42.316735 w.x.y.z:44308 -> a.b.c.d:6060</div><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>INVITE sip:408@a.b.c.d:6060;<wbr>transport=UDP SIP/2.0.</div></span><div style="text-align:start;text-indent:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><span style="font-size:12.8px">Via: SIP/2.0/UDP w.x.y.z:44308;branch=z9hG4bK-524287-1---bac673a0af203e10;</span><wbr><span style="font-size:12.8px">rport.</span></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Max-Forwards: 70.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Contact: <sip:kelvin@w.x.y.z:44308;<wbr>transport=UDP>.</div><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>To: <sip:408@a.b.c.d:6060;<wbr>transport=UDP>.</div><div>From: <sip:kelvin@a.b.c.d:6060;<wbr>transport=UDP>;tag=88ab0030.</div><div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div></span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">CSeq: 1 INVITE.</div><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.</div><div>Content-Type: application/sdp.</div></span><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>User-Agent: Zoiper rv2.8.87-mod.</div><div>Allow-Events: presence, kpml, talk.</div></span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Content-Length: 243.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">v=0.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">o=Zoiper 0 0 IN IP4 192.168.1.234.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">s=Zoiper.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">c=IN IP4 192.168.1.234.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">t=0 0.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">m=audio 38678 RTP/AVP 3 101 0 8.</div><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>a=rtpmap:3 GSM/8000.</div><div>a=rtpmap:101 telephone-event/8000.</div><div>a=fmtp:101 0-16.</div><div>a=rtpmap:0 PCMU/8000.</div><div>a=rtpmap:8 PCMA/8000.</div><div>a=sendrecv.</div><div><br></div><div><br></div></span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">U 2018/04/19 04:39:42.318569 a.b.c.d:6060 -> w.x.y.z:44308</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">SIP/2.0 100 Trying.</div><div style="text-align:start;text-indent:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><span style="font-size:12.8px">Via: SIP/2.0/UDP w.x.y.z:44308;branch=z9hG4bK-524287-1---bac673a0af203e10;</span><wbr><span style="font-size:12.8px">rport=44308;received=w.x.y.z.</span></div><span class="gmail-im" style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><div>To: <sip:408@a.b.c.d:6060;<wbr>transport=UDP>.</div><div>From: <sip:kelvin@a.b.c.d:6060;<wbr>transport=UDP>;tag=88ab0030.</div><div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div></span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">CSeq: 1 INVITE.</div><br><div><br></div><div><br></div></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature">Kelvin Chua</div></div>
<br><div class="gmail_quote">On Thu, Apr 19, 2018 at 5:37 PM, Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Send the full trace for not working scenario, from invite to
cancel, it is hard to track from two partial traces, small bits
can make difference here, so if these call-id, branch, tags are
different, then I have to work on guessing, ...</p>
<p>Cheers,<br>
Daniel<br>
</p><div><div class="h5">
<br>
<div class="m_6296042456079035436moz-cite-prefix">On 19.04.18 11:00, Kelvin Chua wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">yes i have it, sorry i missed that part, they are
identical except for Call-ID, tag, branch
<div><br>
</div>
<div>
<div>U 2018/04/19 05:31:30.319735 w.x.y.z:34439 ->
a.b.c.d:6060</div>
<div>INVITE <a class="m_6296042456079035436moz-txt-link-freetext">sip:408@a.b.c.d:6060;<wbr>transport=UDP</a> SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;branch=z9hG4bK-<wbr>524287-1---b186786334147b7d;<wbr>rport.</div>
<div>Max-Forwards: 70.</div>
<div>Contact: <a class="m_6296042456079035436moz-txt-link-rfc2396E"><sip:kelvin@w.x.y.z:34439;<wbr>transport=UDP></a>.</div>
<div>To: <a class="m_6296042456079035436moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;<wbr>transport=UDP></a>.</div>
<div>From:
<a class="m_6296042456079035436moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;<wbr>transport=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 1 INVITE.</div>
<div>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE,
OPTIONS, INFO, SUBSCRIBE.</div>
<div>Content-Type: application/sdp.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Allow-Events: presence, kpml, talk.</div>
<div>Content-Length: 243.</div>
<div>.</div>
<div>v=0.</div>
<div>o=Zoiper 0 0 IN IP4 192.168.1.234.</div>
<div>s=Zoiper.</div>
<div>c=IN IP4 192.168.1.234.</div>
<div>t=0 0.</div>
<div>m=audio 38678 RTP/AVP 3 101 0 8.</div>
<div>a=rtpmap:3 GSM/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-16.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:8 PCMA/8000.</div>
<div>a=sendrecv.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:30.320283 a.b.c.d:6060 ->
w.x.y.z:34439</div>
<div>SIP/2.0 100 Trying.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;branch=z9hG4bK-<wbr>524287-1---b186786334147b7d;<wbr>rport=34439;received=w.x.y.z.</div>
<div>To: <a class="m_6296042456079035436moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;<wbr>transport=UDP></a>.</div>
<div>From:
<a class="m_6296042456079035436moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;<wbr>transport=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 1 INVITE.</div>
<div>Server: <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">kamailio
(5.1.2 (x86_64/linux))</span>.</div>
<div>Content-Length: 0.</div>
<div>.</div>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="m_6296042456079035436gmail_signature" data-smartmail="gmail_signature">Kelvin
Chua</div>
</div>
<br>
<div class="gmail_quote">On Thu, Apr 19, 2018 at 4:14 PM,
Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>The INVITE from w.x.y.z:44308 -> a.b.c.d:6060 is not
given. That's the one that is needed in order to match
the CANCEL, which comes from w.x.y.z.</p>
<p>Can you provide it?<br>
</p>
Cheers,<br>
Daniel
<div>
<div class="m_6296042456079035436h5"><br>
<br>
<div class="m_6296042456079035436m_1384436471508695471moz-cite-prefix">On
19.04.18 09:47, Kelvin Chua wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr"><font size="4"><b>here is an ngrep of
the working one</b></font>
<div><br>
</div>
<div>
<div>U 2018/04/19 05:31:31.112392 a.b.c.d:6060
-> a.b.c.d:5090</div>
<div>INVITE <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Record-Route: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=d75e<wbr>236e;nat=yes></a>.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>Max-Forwards: 70.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@w.x.y.z:34439;tran<wbr>sport=UDP;alias=w.x.y.z~34439~<wbr>1></a>.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>P-Called-Identity: 408.</div>
<div>CSeq: 2 INVITE.</div>
<div>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY,
REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.</div>
<div>Content-Type: application/sdp.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="3861e6cdaf8a44cc<wbr>e98721e3c8dda428",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="b7a365bd3565073<wbr>6c45d2048d924ea0b",cnonce="492<wbr>da67adf4a5853f0aa012c2fa5a757"<wbr>,nc=00000001,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Allow-Events: presence, kpml, talk.</div>
<div>Content-Length: 255.</div>
<div>P-Called-Party-ID: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>.</div>
<div>v=0.</div>
<div>o=Zoiper 0 0 IN IP4 a.b.c.d.</div>
<div>s=Zoiper.</div>
<div>c=IN IP4 a.b.c.d.</div>
<div>t=0 0.</div>
<div>m=audio 19592 RTP/AVP 3 101 0 8.</div>
<div>a=rtpmap:3 GSM/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-16.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:8 PCMA/8000.</div>
<div>a=sendrecv.</div>
<div>a=rtcp:19593.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:31.180853 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 100 Trying.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 INVITE.</div>
<div>Server: kamailio (5.1.2 (x86_64/linux)).</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:35.134023 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 183 Session Progress.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>Record-Route:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:5090;lr=on;ftag=d<wbr>75e236e;did=208.b272;ReIn=true<wbr>></a>,<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=<wbr>d75e236e;nat=yes></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=r5eFv3QrQD71H.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 INVITE.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:e.f.g.h;did=2082.1aaa8341<wbr>></a>.</div>
<div>User-Agent: SIP.</div>
<div>Accept: application/sdp.</div>
<div>Allow: INVITE, ACK, BYE, CANCEL, OPTIONS,
MESSAGE, INFO, UPDATE, REGISTER, REFER,
NOTIFY.</div>
<div>Supported: timer, path, replaces.</div>
<div>Allow-Events: talk, hold, conference,
refer.</div>
<div>Content-Type: application/sdp.</div>
<div>Content-Disposition: session.</div>
<div>Content-Length: 222.</div>
<div>.</div>
<div>v=0.</div>
<div>o=UAC 23521 12211 IN IP4 23.29.25.68.</div>
<div>s=SIP Media Capabilities.</div>
<div>c=IN IP4 23.29.25.74.</div>
<div>t=0 0.</div>
<div>m=audio 25694 RTP/AVP 0 101.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-15.</div>
<div>a=maxptime:20.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:35.134763 a.b.c.d:6060
-> w.x.y.z:34439</div>
<div>SIP/2.0 183 Session Progress.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>Record-Route:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:5090;lr=on;ftag=d<wbr>75e236e;did=208.b272;ReIn=true<wbr>></a>,<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=<wbr>d75e236e;nat=yes></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=r5eFv3QrQD71H.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 INVITE.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:e.f.g.h;did=2082.1aaa8341<wbr>></a>.</div>
<div>User-Agent: SIP.</div>
<div>Accept: application/sdp.</div>
<div>Allow: INVITE, ACK, BYE, CANCEL, OPTIONS,
MESSAGE, INFO, UPDATE, REGISTER, REFER,
NOTIFY.</div>
<div>Supported: timer, path, replaces.</div>
<div>Allow-Events: talk, hold, conference,
refer.</div>
<div>Content-Type: application/sdp.</div>
<div>Content-Disposition: session.</div>
<div>Content-Length: 250.</div>
<div>.</div>
<div>v=0.</div>
<div>o=UAC 23521 12211 IN IP4 a.b.c.d.</div>
<div>s=SIP Media Capabilities.</div>
<div>c=IN IP4 a.b.c.d.</div>
<div>t=0 0.</div>
<div>m=audio 19610 RTP/AVP 0 101.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-15.</div>
<div>a=maxptime:20.</div>
<div>a=sendrecv.</div>
<div>a=rtcp:19611.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.054719 w.x.y.z:34439
-> a.b.c.d:6060</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;branch=z9hG4bK-5<wbr>24287-1---4c57b6fa8ff74676;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="3861e6cdaf8a44cc<wbr>e98721e3c8dda428",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="8cace32bdff1bc6<wbr>1974d61c8a56238dd",cnonce="030<wbr>abc48cc862c50cf8bd3d0e61844f3"<wbr>,nc=00000002,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.055183 a.b.c.d:6060
-> a.b.c.d:5090</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.055259 a.b.c.d:6060
-> w.x.y.z:34439</div>
<div>SIP/2.0 200 canceling.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;branch=z9hG4bK-5<wbr>24287-1---4c57b6fa8ff74676;rpo<wbr>rt=34439;received=w.x.y.z.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=f072ba6a4747058fd29<wbr>33a88d05e31a8-77fc.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Server: Sipsurge Overlord/<a href="http://1.0.0." target="_blank">1.0.0.</a></div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.055443 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 200 canceling.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=886d45488eeb4821dd4<wbr>d3b48f2349838-53f2.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Server: kamailio (5.1.2 (x86_64/linux)).</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.059120 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 487 Request Terminated.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=886d45488eeb4821dd4<wbr>d3b48f2349838-53f2.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 INVITE.</div>
<div>Server: kamailio (5.1.2 (x86_64/linux)).</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.059306 a.b.c.d:6060
-> a.b.c.d:5090</div>
<div>ACK <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bK638<wbr>a.ebce2b6669d2c54149bcc613c89d<wbr>6510.1.</div>
<div>Max-Forwards: 70.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=886d45488eeb4821dd4<wbr>d3b48f2349838-53f2.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 ACK.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.060030 a.b.c.d:6060
-> w.x.y.z:34439</div>
<div>SIP/2.0 487 Request Terminated.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---4c5<wbr>7b6fa8ff74676;rport=34439.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=886d45488eeb4821dd4<wbr>d3b48f2349838-53f2.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 INVITE.</div>
<div>Server: kamailio (5.1.2 (x86_64/linux)).</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 05:31:36.262168 w.x.y.z:34439
-> a.b.c.d:6060</div>
<div>ACK <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:34439;branch=z9hG4bK-5<wbr>24287-1---4c57b6fa8ff74676;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=886d45488eeb4821dd4<wbr>d3b48f2349838-53f2.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=d75e236e.</div>
<div>Call-ID: 7O090_g-Ndh_I22Zi5ZOhQ...</div>
<div>CSeq: 2 ACK.</div>
<div>Content-Length: 0.</div>
<div>.</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><font size="4"><b>and then ngrep of the
non-matching one</b></font></div>
<div><br>
</div>
<div>
<div>U 2018/04/19 04:39:43.137832 a.b.c.d:6060
-> a.b.c.d:5090</div>
<div>INVITE <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Record-Route: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=88ab<wbr>0030;nat=yes></a>.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bKcd0<wbr>6.5537814be9e2ae1fe1f60daf1fb3<wbr>9e03.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---bac<wbr>673a0af203e10;rport=44308.</div>
<div>Max-Forwards: 70.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@w.x.y.z:44308;tran<wbr>sport=UDP;alias=w.x.y.z~44308~<wbr>1></a>.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>P-Called-Identity: 408.</div>
<div>CSeq: 2 INVITE.</div>
<div>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY,
REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.</div>
<div>Content-Type: application/sdp.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="815682331c7aaddb<wbr>ff9a28548d875652",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="c5147959ff30db5<wbr>eb9d38fb7ec796a68",cnonce="349<wbr>6cd726af47c79a4725f83f74c7d98"<wbr>,nc=00000001,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Allow-Events: presence, kpml, talk.</div>
<div>Content-Length: 255.</div>
<div>P-Called-Party-ID: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>.</div>
<div>v=0.</div>
<div>o=Zoiper 0 0 IN IP4 a.b.c.d.</div>
<div>s=Zoiper.</div>
<div>c=IN IP4 a.b.c.d.</div>
<div>t=0 0.</div>
<div>m=audio 19554 RTP/AVP 3 101 0 8.</div>
<div>a=rtpmap:3 GSM/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-16.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:8 PCMA/8000.</div>
<div>a=sendrecv.</div>
<div>a=rtcp:19555.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:43.202106 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 100 Trying.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bKcd0<wbr>6.5537814be9e2ae1fe1f60daf1fb3<wbr>9e03.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---bac<wbr>673a0af203e10;rport=44308.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 INVITE.</div>
<div>Server: kamailio (5.1.2 (x86_64/linux)).</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:47.400412 a.b.c.d:5090
-> a.b.c.d:6060</div>
<div>SIP/2.0 183 Session Progress.</div>
<div>Via: SIP/2.0/UDP a.b.c.d:6060;branch=z9hG4bKcd0<wbr>6.5537814be9e2ae1fe1f60daf1fb3<wbr>9e03.1.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---bac<wbr>673a0af203e10;rport=44308.</div>
<div>Record-Route:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:5090;lr=on;ftag=8<wbr>8ab0030;did=8a.f2c2;ReIn=true></a><wbr>,<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=<wbr>88ab0030;nat=yes></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=cp1SQvQ6SNSaH.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 INVITE.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:e.f.g.h;did=8a06.2a2c6204<wbr>></a>.</div>
<div>User-Agent: SIP.</div>
<div>Accept: application/sdp.</div>
<div>Allow: INVITE, ACK, BYE, CANCEL, OPTIONS,
MESSAGE, INFO, UPDATE, REGISTER, REFER,
NOTIFY.</div>
<div>Supported: timer, path, replaces.</div>
<div>Allow-Events: talk, hold, conference,
refer.</div>
<div>Content-Type: application/sdp.</div>
<div>Content-Disposition: session.</div>
<div>Content-Length: 221.</div>
<div>.</div>
<div>v=0.</div>
<div>o=UAC 7006 20280 IN IP4 23.29.21.84.</div>
<div>s=SIP Media Capabilities.</div>
<div>c=IN IP4 23.29.21.91.</div>
<div>t=0 0.</div>
<div>m=audio 27104 RTP/AVP 0 101.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-15.</div>
<div>a=maxptime:20.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:47.401210 a.b.c.d:6060
-> w.x.y.z:44308</div>
<div>SIP/2.0 183 Session Progress.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;received=w.x.y.z<wbr>;branch=z9hG4bK-524287-1---bac<wbr>673a0af203e10;rport=44308.</div>
<div>Record-Route:
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:5090;lr=on;ftag=8<wbr>8ab0030;did=8a.f2c2;ReIn=true></a><wbr>,<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:a.b.c.d:6060;lr;ftag=<wbr>88ab0030;nat=yes></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>;tag=cp1SQvQ6SNSaH.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 INVITE.</div>
<div>Contact: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:e.f.g.h;did=8a06.2a2c6204<wbr>></a>.</div>
<div>User-Agent: SIP.</div>
<div>Accept: application/sdp.</div>
<div>Allow: INVITE, ACK, BYE, CANCEL, OPTIONS,
MESSAGE, INFO, UPDATE, REGISTER, REFER,
NOTIFY.</div>
<div>Supported: timer, path, replaces.</div>
<div>Allow-Events: talk, hold, conference,
refer.</div>
<div>Content-Type: application/sdp.</div>
<div>Content-Disposition: session.</div>
<div>Content-Length: 249.</div>
<div>.</div>
<div>v=0.</div>
<div>o=UAC 7006 20280 IN IP4 a.b.c.d.</div>
<div>s=SIP Media Capabilities.</div>
<div>c=IN IP4 a.b.c.d.</div>
<div>t=0 0.</div>
<div>m=audio 19576 RTP/AVP 0 101.</div>
<div>a=rtpmap:0 PCMU/8000.</div>
<div>a=rtpmap:101 telephone-event/8000.</div>
<div>a=fmtp:101 0-15.</div>
<div>a=maxptime:20.</div>
<div>a=sendrecv.</div>
<div>a=rtcp:19577.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:49.552641 w.x.y.z:44308
-> a.b.c.d:6060</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;branch=z9hG4bK-5<wbr>24287-1---bac673a0af203e10;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="815682331c7aaddb<wbr>ff9a28548d875652",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="3e161bd546cdd5e<wbr>8876cb48ffdfaeea0",cnonce="d1c<wbr>a4c1b6e427869e795f7da457b3eef"<wbr>,nc=00000002,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:50.050153 w.x.y.z:44308
-> a.b.c.d:6060</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;branch=z9hG4bK-5<wbr>24287-1---bac673a0af203e10;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="815682331c7aaddb<wbr>ff9a28548d875652",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="3e161bd546cdd5e<wbr>8876cb48ffdfaeea0",cnonce="d1c<wbr>a4c1b6e427869e795f7da457b3eef"<wbr>,nc=00000002,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:51.048945 w.x.y.z:44308
-> a.b.c.d:6060</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;branch=z9hG4bK-5<wbr>24287-1---bac673a0af203e10;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="815682331c7aaddb<wbr>ff9a28548d875652",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="3e161bd546cdd5e<wbr>8876cb48ffdfaeea0",cnonce="d1c<wbr>a4c1b6e427869e795f7da457b3eef"<wbr>,nc=00000002,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Content-Length: 0.</div>
<div>.</div>
<div><br>
</div>
<div><br>
</div>
<div>U 2018/04/19 04:39:53.049231 w.x.y.z:44308
-> a.b.c.d:6060</div>
<div>CANCEL <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-freetext">sip:408@a.b.c.d:6060;transport<wbr>=UDP</a>
SIP/2.0.</div>
<div>Via: SIP/2.0/UDP
w.x.y.z:44308;branch=z9hG4bK-5<wbr>24287-1---bac673a0af203e10;rpo<wbr>rt.</div>
<div>Max-Forwards: 70.</div>
<div>To: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:408@a.b.c.d:6060;transpor<wbr>t=UDP></a>.</div>
<div>From: <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E"><sip:kelvin@a.b.c.d:6060;trans<wbr>port=UDP></a>;tag=88ab0030.</div>
<div>Call-ID: qXQ2PEtXgehz4CQYo2ryLg...</div>
<div>CSeq: 2 CANCEL.</div>
<div>Proxy-Authorization: Digest
username="kelvin",realm="<a href="http://domain.com" target="_blank">domai<wbr>n.com</a>",nonce="815682331c7aaddb<wbr>ff9a28548d875652",uri=<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-rfc2396E">"sip:<wbr>408@a.b.c.d:6060;transport=<wbr>UDP"</a>,response="3e161bd546cdd5e<wbr>8876cb48ffdfaeea0",cnonce="d1c<wbr>a4c1b6e427869e795f7da457b3eef"<wbr>,nc=00000002,qop=auth,algorith<wbr>m=MD5.</div>
<div>User-Agent: Zoiper rv2.8.87-mod.</div>
<div>Content-Length: 0.</div>
<div>.</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="m_6296042456079035436m_1384436471508695471gmail_signature" data-smartmail="gmail_signature">Kelvin Chua</div>
</div>
<br>
<div class="gmail_quote">On Wed, Apr 18, 2018 at
11:22 PM, Daniel-Constantin Mierla <span dir="ltr"><<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>Hello,</p>
<p>do you have a pcap with all messages for
such call (invite, replies, cancel)? It is
important to see if the transaction
matching elements are properly set.</p>
<p>In general, the rule for cancel is to be
sent in the same way (with the same
elements) as the invite, because cancel is
not a standalone transaction, it must
match the associated invite one.<br>
</p>
Cheers,<br>
Daniel
<div>
<div class="m_6296042456079035436m_1384436471508695471h5"><br>
<br>
<div class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-cite-prefix">On
18.04.18 16:59, Kelvin Chua wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">after couple of tests,
it is still hit and miss, sometimes
it matches, sometimes it does not.</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Wed, Apr 18, 2018,
6:47 PM Kelvin Chua <<a href="mailto:kelchy@gmail.com" target="_blank">kelchy@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">thanks alex, will
test this out further but looks
good at the moment
<div>any idea why it is not
matching when RURI has the
port if i only use
t_check_trans() and relay?</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870m_8706939025228119807gmail_signature" data-smartmail="gmail_signature">Kelvin Chua</div>
</div>
<br>
<div class="gmail_quote">On Wed,
Apr 18, 2018 at 3:44 PM, Alex
Balashov <span dir="ltr"><<a href="mailto:abalashov@evaristesys.com" rel="noreferrer" target="_blank">abalashov@evaristesys.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Try
this instead:<br>
<br>
route {<br>
...<br>
<br>
t_check_trans();<br>
<br>
...<br>
<br>
if(is_method("CANCEL")) {<br>
if(!t_relay_cancel()) <br>
sl_send_reply("500",
"Internal Server Error");<br>
<br>
exit;<br>
}<br>
}<br>
<span class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870m_8706939025228119807HOEnZb"><font color="#888888"><br>
-- Alex<br>
<br>
-- <br>
Alex Balashov |
Principal | Evariste
Systems LLC<br>
<br>
Tel: +1-706-510-6800 /
+1-800-250-5920
(toll-free) <br>
Web: <a href="http://www.evaristesys.com/" rel="noreferrer
noreferrer" target="_blank">http://www.evaristesys.com/</a>,
<a href="http://www.csrpswitch.com/" rel="noreferrer
noreferrer" target="_blank">http://www.csrpswitch.com/</a><br>
<br>
______________________________<wbr>_________________<br>
Kamailio (SER) - Users
Mailing List<br>
<a href="mailto:sr-users@lists.kamailio.org" rel="noreferrer" target="_blank">sr-users@lists.kamailio.org</a><br>
<a href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" rel="noreferrer
noreferrer" target="_blank">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a><br>
</font></span></blockquote>
</div>
<br>
</div>
</blockquote>
</div>
<br>
<fieldset class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870mimeAttachmentHeader"></fieldset>
<br>
<pre>______________________________<wbr>_________________
Kamailio (SER) - Users Mailing List
<a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-abbreviated" href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a>
<a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-freetext" href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi<wbr>-bin/mailman/listinfo/sr-users</a>
</pre>
</blockquote>
<br>
</div>
</div>
<span class="m_6296042456079035436m_1384436471508695471HOEnZb"><font color="#888888">
<pre class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - April 16-18, 2018, Berlin - <a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-abbreviated" href="http://www.asipto.com" target="_blank">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="m_6296042456079035436m_1384436471508695471m_-4482268004969300870moz-txt-link-abbreviated" href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a></pre>
</font></span></div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<pre class="m_6296042456079035436m_1384436471508695471moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="m_6296042456079035436m_1384436471508695471moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio World Conference - May 14-16, 2018 - <a class="m_6296042456079035436m_1384436471508695471moz-txt-link-abbreviated" href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a></pre>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<pre class="m_6296042456079035436moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="m_6296042456079035436moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a class="m_6296042456079035436moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio World Conference - May 14-16, 2018 - <a class="m_6296042456079035436moz-txt-link-abbreviated" href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a></pre>
</div></div></div>
</blockquote></div><br></div>