我在网上搜索了一圈，发现关于msp10协议的内容很少。
只要在http://www.hypothetic.org/的论坛上资料多一点。

我用IRIS跟踪了一下MSN MESSENGER 6.2.0133，发现，MSNP10中的SYN改动比较大。

>>SYN 118 2004 0
<<SYN 118 2004-06-17T23:34:36.6300000-07:00 2004-06-14T22:54:33.8130000-07:00 1 0
<<GTC A
<<BLP BL
<<PRP MFN [XXXXX]XXXXX
<<PRP MBE N
<<PRP WWE 0
<<LST N=XXXX@hotmail.com F=XXXXX[XXXXXXX] C=XXXXXXX-XXXXX-XXXX-XXXXX-XXXXXX 11
<<BPR MOB Y

看样子，SYN好像现在的格式改成，发送一个时间，这个时间是一个同步时间。
猜想可能MSN MESSENGER开始记录同步时间了。
估计有些信息可能现在存储在客户端，而每次登陆的时候，会根据同步时间，进一步同步更改的信息。

用另外一个账号尝试，的确有所不同。

>>SYN 139 2004-06-17T22:28:10.8700000-07:00 2004-06-17T22:28:11.1200000-07:00
<<SYN 139 2004-06-17T22:28:10.8700000-07:00 2004-06-17T22:28:11.1200000-07:00

就和第一个有明显不同，联系人的信息，都是在设置了自己状态信息后，才返回
>>CHG 140 NLN 805306468 %3Cmsnobj%20Creator%3D%22xxxx%40hotmail.com%22%20Size%3D%2233630%22%20Type%3D%223%22%20Location%3D%22TFR7.dat%22%20Friendly%3D%22AAA%3D%22%20SHA1D%3D%22fUp1qsbEAHWV3IFgjMglKlT%2FC5k%3D%22%20SHA1C%3D%22b%2BF7JnnL2K5ysdNzW727SjSJKoQ%3D%22%2F%3E
<<CHG 140 NLN 805306468 %3Cmsnobj%20Creator%3D%22xxxx%40hotmail.com%22%20Size%3D%2233630%22%20Type%3D%223%22%20Location%3D%22TFR7.dat%22%20Friendly%3D%22AAA%3D%22%20SHA1D%3D%22fUp1qsbEAHWV3IFgjMglKlT%2FC5k%3D%22%20SHA1C%3D%22b%2BF7JnnL2K5ysdNzW727SjSJKoQ%3D%22%2F%3E
<<ILN 140 NLN xxxx@hotmail.com ®jun 805306412 %3Cmsnobj%20Creator%3D%22XXXXXX%40hotmail.com%22%20Size%3D%228868%22%20Type%3D%223%22%20Location%3D%22TFR54.dat%22%20Friendly%3D%22AAA%3D%22%20SHA1D%3D%22g7nYAVrvls7t12D6%2Fmj4g8h60AQ%3D%22%20SHA1C%3D%22P5sO794TjRNcTO0sZTAKA2P88p8%3D%22%2F%3E
ILN 140 NLN xxxxx@citiz.net XXXX 805306404 %3Cmsnobj%20Creator%3D%22XXXXX%40citiz.net%22%20Size%3D%2216198%22%20Type%3D%223%22%20Location%3D%22TFR2A.dat%22%20Friendly%3D%22AAA%3D%22%20SHA1D%3D%22ydTYmeRg%2F6sDnJtXPlYF3ES9ikQ%3D%22%20SHA1C%3D%2229sEq2S3IOIcRJs45Q4GNyg8wWc%3D%22%2F%3E