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<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We’re testing kamailio 4.3.4 with two kamailio’s communicating with each other. One of them is a gateway with rtpengine at the carrier side, the other is a basic sip router.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When calling a destination and cancelling the INVITE a 487 is received from the carrier and directly ACK’d by the first kamailio and in turn is forwarded to the second.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">But the 487 response received by the 2<sup>nd</sup> kamailio doesn’t have a Via header which results in kamailio printing the error: receive_msg(): no via found in reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any ideas why the forwarded 487 doesn’t contain a Via header and how to fix this?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Note: IP’s are changed.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Carrier: 10.0.0.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kamailio 1: 10.14.0.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kamailio 2: 10.14.0.2<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">U 10.0.0.1:5060 -> 10.14.0.1:5060<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">SIP/2.0 487 Request Cancelled.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK8e28.642c68037d059634308d4be8fe3f0cdc.0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From: "+31612345678" <sip:+31612345678@10.14.0.3:5060>;tag=109ac722.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">To: <sip:003112345678@10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Contact: <sip:10.0.0.1:5060>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">CSeq: 2 INVITE.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Server: sbc_5.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Content-Length: 0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">#<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">U 10.14.0.1:5060 -> 10.0.0.1:5060<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ACK sip:003112345678@10.0.0.1:5060 SIP/2.0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Via: SIP/2.0/UDP 10.14.0.1;branch=z9hG4bK8e28.642c68037d059634308d4be8fe3f0cdc.0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Max-Forwards: 67.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">To: <sip:003112345678@10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From: "+31612345678"<sip:+31612345678@10.14.0.3:5060>;tag=109ac722.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">CSeq: 2 ACK.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Content-Length: 0.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">#<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">U 10.14.0.1:5060 -> 10.14.0.2:5060<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">SIP/2.0 487 Request Cancelled.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">From: "+31612345678" <sip:+31612345678@10.14.0.3:5060>;tag=109ac722.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">To: <sip:003112345678@10.14.0.3:5060>;tag=sbcsipuas_1_C22196_20160314080307791_b59sb10.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Call-ID: 78100MjY3OGExZmMyODU2MzAyMzM5ODA3MmNhMDdlMzg0MzU.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Contact: <sip:10.0.0.1:5060>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">CSeq: 2 INVITE.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Server: sbc_5.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Content-Length: 0.<o:p></o:p></span></p>
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