T 10.0.0.2:3604 -> 10.0.0.1:5060 [AP]
MESSAGE sip:gimlet@vorpalcloud.org SIP/2.0.
Via: SIP/2.0/TCP 192.168.174.1:5060;branch=z9hG4bK33A10C220FF326C65024.
From: <sip:storm@vorpalcloud.org>;tag=2093024434;epid=1234567890.
To: <sip:gimlet@vorpalcloud.org>.
Max-Forwards: 10.
CSeq: 6 MESSAGE.
User-Agent: Gaim/2.0.0beta6.
Call-ID: 6881g2C2Ca368Ei67ADm625Et2066b3548x2F79x.
Content-Type: application/im-iscomposing+xml.
Content-Length: 322.
.
<?xml version="1.0" encoding="UTF-8"?>
<isComposing xmlns="urn:ietf:params:xml:ns:im-iscomposing"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:ns:im-composing iscomposing.xsd">
<state>active</state>
<contenttype>text/plain</contenttype>
<refresh>60</refresh>
</isComposing>

T 10.0.0.2:3604 -> 10.0.0.1:5060 [AP]
MESSAGE sip:gimlet@vorpalcloud.org SIP/2.0.
Via: SIP/2.0/TCP 192.168.174.1:5060;branch=z9hG4bK0AC84B1C45D148180533.
From: <sip:storm@vorpalcloud.org>;tag=3087815435;epid=1234567890.
To: <sip:gimlet@vorpalcloud.org>.
Max-Forwards: 10.
CSeq: 7 MESSAGE.
User-Agent: Gaim/2.0.0beta6.
Call-ID: 619Bg2286a47A6i7D9Cm57AFt5E65b567Ax437Dx.
Content-Type: text/plain.
Content-Length: 2.
.
hi

T 10.0.0.2:3604 -> 10.0.0.1:5060 [AP]
MESSAGE sip:gimlet@vorpalcloud.org SIP/2.0.
Via: SIP/2.0/TCP 192.168.174.1:5060;branch=z9hG4bK61C3307751B35BF2590A.
From: <sip:storm@vorpalcloud.org>;tag=768431748;epid=1234567890.
To: <sip:gimlet@vorpalcloud.org>.
Max-Forwards: 10.
CSeq: 8 MESSAGE.
User-Agent: Gaim/2.0.0beta6.
Call-ID: 2A43g14E3a7EB4i1B60m4226t5C1Fb1A16x29BBx.
Content-Type: application/im-iscomposing+xml.
Content-Length: 320.
.
<?xml version="1.0" encoding="UTF-8"?>
<isComposing xmlns="urn:ietf:params:xml:ns:im-iscomposing"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:ietf:params:xml:ns:im-composing iscomposing.xsd">
<state>idle</state>
<contenttype>text/plain</contenttype>
<refresh>60</refresh>
</isComposing>

T 10.0.0.1:5060 -> 10.0.0.2:3604 [AP]
SIP/2.0 477 Unfortunately error on sending to next hop occurred (477/TM).
Via: SIP/2.0/TCP 192.168.174.1:5060;branch=z9hG4bK33A10C220FF326C65024;received=10.0.0.2.
From: <sip:storm@vorpalcloud.org>;tag=2093024434;epid=1234567890.
To: <sip:gimlet@vorpalcloud.org>;tag=fa997f81440371de71ab448ebdb9af56-fc55.
CSeq: 6 MESSAGE.
Call-ID: 6881g2C2Ca368Ei67ADm625Et2066b3548x2F79x.
Server: OpenSer (1.1.1-notls (i386/linux)).
Content-Length: 0.
Warning: 392 10.0.0.1:5060 "Noisy feedback tells:  pid=3751 req_src_ip=10.0.0.2 req_src_port=3604 in_uri=sip:gimlet@vorpalcloud.org out_uri=sip:gimlet@192.168.174.1:5060;transport=tcp via_cnt==1".
.