# Introduction
MSNP6 is the fifth released version of the Mobile Status Notification Protocol.
It was introduced officially in Client Version 3.6.0038.

# Command information
It introduces the notification service commands:
* CHL
* IPG
* QRY

*No switchboard or dispatch service commands were known to be introduced in this version*

*No error codes were known to be introduced in this version*

*No commands were known to be removed in this version*

# Known changes
(from [MSNP5](msnp5.md)):
* USR OK now has a verified bit (parameter 4), if 0, shows a warning to verify the account.
  NOTE: Your display name will be forced to be
  `example@hotmail.com (E-Mail Address Not Verified)`, and cannot be changed.
* Client-server challenges were introduced. The format for the response is
  `MD5(challenge + clientSecret)` as a lowercase hex-string.
* An example client secret is `Q1P7W2E4J9R8U3S5`, which is tied to `msmsgs@msnmsgr.com`.
* First protocol version added in a patch release (3.6.0025 and 3.6.0026 do not support MSNP6).

# Client-server communication example
```
C: VER 1 MSNP6 MSNP5 MSNP4 CVR0
S: VER 1 MSNP6
C: INF 2
S: INF 2 MD5
C: USR 3 MD5 I example@hotmail.com
S: XFR 3 NS 10.0.0.5:1863 0
```
Client disconnects from server

Client opens a connection to 10.0.0.5:1863
```
C: VER 4 MSNP6 MSNP5 MSNP4 CVR0
S: VER 4 MSNP6
C: INF 5
S: INF 5 MD5
C: USR 6 MD5 I example@hotmail.com
S: USR 6 MDS S prefix
C: USR 7 MD5 S $md5(prefix + password)
S: USR 7 OK example@hotmail.com example%20user 1
S: MSG Hotmail Hotmail 367
MIME-Version: 1.0
Content-Type: text/x-msmsgsprofile; charset=UTF-8
LoginTime: 1726321960
EmailEnabled: 1
MemberIdHigh: 1
MemberIdLow: 2
lang_preference: 1033
PreferredEmail: example@hotmail.com
country: US
PostalCode: 
Gender: 
Kid: 0
Age: 
BDayPre: 
Birthday: 
Wallet: 
Flags: 1027
sid: 507
kv: 11
MSPAuth: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA$$

C: SYN 8 8
S: SYN 8 8
C: CHG 9 NLN
S: CHG 9 NLN
S: CHL 0 11111111111111111111
C: QRY 10 msmsgs@msnmsgr.com 32
3b6666b60157322b6fc6e41a115968f5
S: QRY 10
C: OUT
```
Client disconnects from server
```
S: OUT
```
Server disconnects client