Protocols/MSNP
| MSNP Protocol |
| Introduction • Terms • Clients |
| Reference |
| Error List • Commands • Relying Party Suite • Spotlife |
| Services |
| XMPP • HTTP Gateway • Tabs • Activities |
| Documentation |
| Development Tools • MSNP Grid |
| Polygamy • URLs used by MSN |
| Documents |
| Protocol Versions |
| Version 21 |
| Version 18 |
| Version 16 |
| Version 15 |
| Version 14 |
| Version 13 |
| Version 12 |
| Version 11 |
| Version 9 |
| Version 8 |
| Version 2 |
| MSNC |
| Introduction • P2P • Object Descriptor • Display Pictures • File Transfer |
| Scenarios |
| Microsoft Messenger for Mac |
| MSNP on WebTV (MSNTV) |
MSNP stands for "Microsoft Notification Protocol", the protocol used on MSN/Windows Live Messenger, all the way to when it was discontinued, and Skype's network used a heavily modified version of MSNP in the past. We not only will fully document the protocol, but will maintain and update it.
If you want to contribute, you can request an account by sending an email to accounts@wiki.nina.chat with desired username and also a few words on what you have to contribute (for spam control). You should also check the Needed, which is a list of things we are looking for.
If you want to contribute something anonymously or without registering, send it to contribute@wiki.nina.chat. If anonymity is desired, state so, and your name/email will not be mentioned.
You can also donate to help with this MSN/Windows Live revival, because it is a full time job at this point.
Clients
Read additional frequently asked questions for clients and the Escargot service.
Protocol History
MSNP was first implemented with version 2 - MSNP2 - on July 17 1999. It only used TCP, no webservices or anything like that.
As time went along, MSNP was extended and improved upon, incrementing its version number. By MSNP8, a new authentication system: Passport. This was first time something essential was used that wasn't sent via the regular MSNP TCP socket.
From a technical standpoint the MD5 method that was used in MSNP7 was completely secure even from man in the middle attacks but Microsoft decided that it would be beneficial to MSN Messenger to authenticate directly with the passport servers, and Protocols/MSNP/Tweener was born.
After MSNP8, other, newer protocol versions were released (MSNP9, MSNP10, MSNP11, MSNP12, MSNP13 for WLM 8, et al). Most of the times the protocols introduced a more efficient way of storing contact lists and other properties, but also added new features as new clients were released to the public by the MSN Messenger team.
MSNP's final version was MSNP21, if we consider Windows Live Messenger 2012 the last version. However, MSNP22 existed, it was used on the Metro Messaging app on Windows 8.0, and MSNP24 was used on Skype for a while - although very different from regular old MSNP.