From: fengqin.lu on
This is a segment of a packet obtained while tranfering file with msn:

ACK MSNMSGR:h_devil(a)163.com MSNSLP/1.0
To: <msnmsgr:h_devil(a)163.com>
From: <msnmsgr:wang.hengl(a)hotmail.com>
Via: MSNSLP/1.0/TLP ;branch={C5AB51D4-A756-42B3-ACD2-62685C470312}
CSeq: 0
Call-ID: {00000000-0000-0000-0000-000000000000}
Max-Forwards: 0
Content-Type: application/x-msnmsgr-transudpswitch
Content-Length: 198
stroPdnAsrddAlanretxE4vPI: 05436:312.941.312.85
stroPdnAsrddAlanretnI4vPI: 4522:761.2.861.291 4522:261.691.061.902
4522:85.33.24.01
SessionID: 2492146
SChannelState: 0
Capabilities-Flags: 1


I don't understand the content-type "application/x-msnmsgr-
transudpswitch" here.What is it used for ? And what does it do?
Another is "application/x-msnmsgr-transdestaddrupdate", you know
that?
Please share with me. thank you!