# Table of contents:

Introduction
Command information
Known changes
- Changes to error codes
  - Re-added
  - Removed
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

It introduces the error codes:

# Known changes

(from MSNP5):

USR OK now has a verified bit (parameter 4), if it is 0, the Official Client 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 (QRY commands) are MD5(challenge + privateKey) as a lowercase hexadecimal string.
An example Private Key is Q1P7W2E4J9R8U3S5, which is tied to the Public Key of 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.
Official Client: Error 924 dialog changed to the unverified but still can use service one. Not sure why.

# Changes to error codes

Only applies for the Official Client.

# Re-added

None.

# Removed

# 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
S: IPG 478
<NOTIFICATION id="0" siteid="111100400" siteurl="http://mobile.msn.com/">
    <TO name="example@hotmail.com" pid="0x00000001:0x00000002" email="example@hotmail.com">
        <VIA agent="mobile"/>
    </TO>
    <FROM pid="0x00000001:0x00000002" name="anotheruser@hotmail.com"/>
    <MSG pri="1" id="0">
        <ACTION url="2wayIM.asp"/>
        <SUBSCR url="2wayIM.asp"/>
        <CAT id="110110001"/>
        <BODY lang="1033">
            <TEXT>Hello! I am talking from a mobile device.</TEXT>
        </BODY>
    </MSG>
</NOTIFICATION>
C: OUT

Client disconnects from server

S: OUT

Server disconnects client