# Table of contents:

Introduction
Command information
Known changes
Client-server communication example

# 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:

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):

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 can not 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 (Client Versions 3.6.0025 and 3.6.0026 do not support MSNP6).
Official Client: Added new URL services PROFILE, N2PACCOUNT and N2PFUND.

# 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