[Serusers] RE: How does Instant Message work?

[Steven Wang]

-----Original Message-----
From: xwang at comcast.net [mailto:xu.wang at comcast.net]
Sent: Friday, December 31, 2004 12:46 PM
To: serusers at lists.iptel.org
Subject: How does Instant Message work?


Hello

I used 'SER' to send a IM to Messenger. SER gets '200 OK' reply, but
messenger doesn't show anything. Here is the ngrep's output. Does anyone
know what the probem is?

thanks!
steven

U 192.168.1.104:5060 -> 192.168.1.103:4139
  MESSAGE sip:192.168.1.103:4139 SIP/2.0..Max-Forwards: 10..Record-Route
  : <sip:192.168.1.104;ftag=a707bfce77c9367d1734afac7b3de6ca-e9b8;lr=on>
  ..Via: SIP/2.0/UDP 192.168.1.104;branch=z9hG4bK7881.af588177.0..Via: S
  IP/2.0/UDP 192.168.1.104;rport=5060;branch=z9hG4bK7881.9f588177.0..To:
   <sip:8668150718 at 192.168.1.104>..From: sip:8016102 at 192.168.1.104;tag=a
  707bfce77c9367d1734afac7b3de6ca-e9b8..CSeq: 10 MESSAGE..Call-ID: 6ddff
  bfe-0 at 192.168.1.104..Content-Length: 7..User-Agent: Sip EXpress router
  (0.10.99-dev0 (i386/linux))..p-version: Astbill-xwang-0.5..Contact: <s
  ip:admin at 192.168.1.104:5060>..Content-Type: text/plain; charset=UTF-8.
  .P-hint: fixed NAT contact for request....hello..
#
U 192.168.1.103:4139 -> 192.168.1.104:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 192.168.1.104;branch=z9hG4bK7881.
  af588177.0..Via: SIP/2.0/UDP 192.168.1.104;rport=5060;branch=z9hG4bK78
  81.9f588177.0..From: sip:8016102 at 192.168.1.104;tag=a707bfce77c9367d173
  4afac7b3de6ca-e9b8..To: <sip:8668150718 at 192.168.1.104>;tag=a4f9c9853ee
  54a9783c18ffd41692d06..Call-ID: 6ddffbfe-0 at 192.168.1.104..CSeq: 10 MES
  SAGE..User-Agent: RTC/1.2..Content-Length: 0....
#
U 192.168.1.103:4139 -> 192.168.1.104:5060
  SIP/2.0 200 OK..Via: SIP/2.0/UDP 192.168.1.104;branch=z9hG4bK7881.af58
  8177.0..Via: SIP/2.0/UDP 192.168.1.104;rport=5060;branch=z9hG4bK7881.9
  f588177.0..From: sip:8016102 at 192.168.1.104;tag=a707bfce77c9367d1734afa
  c7b3de6ca-e9b8..To: <sip:8668150718 at 192.168.1.104>;tag=a4f9c9853ee54a9
  783c18ffd41692d06..Call-ID: 6ddffbfe-0 at 192.168.1.104..CSeq: 10 MESSAGE
  ..Record-Route: <sip:192.168.1.104;ftag=a707bfce77c9367d1734afac7b3de6
  ca-e9b8;lr=on>..Contact: <sip:192.168.1.103:7110>..User-Agent: RTC/1.2
  ..Content-Length: 0....
#
U 192.168.1.103:4139 -> 192.168.1.104:5060
  BYE sip:192.168.1.104;ftag=a707bfce77c9367d1734afac7b3de6ca-e9b8;lr=on
   SIP/2.0..Via: SIP/2.0/UDP 192.168.1.103:7110..Max-Forwards: 70..From:
   <sip:8668150718 at 192.168.1.104>;tag=a4f9c9853ee54a9783c18ffd41692d06..
  To: sip:8016102 at 192.168.1.104;tag=a707bfce77c9367d1734afac7b3de6ca-e9b
  8..Call-ID: 6ddffbfe-0 at 192.168.1.104..CSeq: 1 BYE..Route: <sip:admin at 1
  92.168.1.104:5060>..User-Agent: RTC/1.2..Content-Length: 0....
#
U 192.168.1.104:5060 -> 192.168.1.103:7110
  SIP/2.0 404 Not Found and no voicemail turned on..Via: SIP/2.0/UDP 192
  .168.1.103:7110..From: <sip:8668150718 at 192.168.1.104>;tag=a4f9c9853ee5
  4a9783c18ffd41692d06..To: sip:8016102 at 192.168.1.104;tag=a707bfce77c936
  7d1734afac7b3de6ca-e9b8..Call-ID: 6ddffbfe-0 at 192.168.1.104..CSeq: 1 BY
  E..Server: Sip EXpress router (0.10.99-dev0 (i386/linux))..Content-Len
  gth: 0....