msnp-wiki/docs/versions/cvr0.md
yellows111 4bf934f857
[v0.1.4-beta.2] everything i want before msnp13
update version file, forgot this repo had one
fix mistakes and other such
add new information
finish passport (SOAP) stuff, may rename to RST later?, just mention in footnote for now

next commit WILL be msnp13 on 0.1.4 release, promise
2024-11-26 21:15:34 +00:00

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# Introduction
CVR0 is a subprotocol of the Mobile Status Notification Protocol.
It was introduced officially in Client Version 1.0.0863, along with [MSNP2](msnp2.md).
It is used for requesting the latest client information in case no other protocols were supported.
# Command information
It introduces the commands:
* [CVQ](../commands/cvq.md)
*No error codes were known to be introduced in this version*
*No commands were known to be removed in this version*
# Known changes
(from Beta 2):
* Changed [CVR](../commands/cvr.md) to [CVQ](../commands/cvq.md)
* [CVQ](../commands/cvq.md): Added fallback URL to response (parameter 5)
* Since [MSNP4](msnp4.md): Added an empty parameter that is meant to be the
client codebase identification parameter added in [CVR](../commands/cvr.md) (parameter 7)
* Since [MSNP8](msnp8.md): Fixed client codebase identification parameter (parameter 7)
to be no longer always empty, and added current user handle to request (parameter 8)
# Client-server communication examples
*NOTE: This has been line-breaked.
Lines beginning with `..` followed by a space are continuations of the previous line.*
## Older protocols
*Only in[MSNP2](msnp2.md) to [MSNP7](msnp7.md), example using Client Version 1.0.*
```
C: VER 1 MSNP2 CVR0
S: VER 1 CVR0
C: CVQ 2 0x0409 win 4.10 i386 MSMSGS 1.0.0863
S: CVQ 2 5.0.0537 5.0.0537 1.0.0863
.. http://download.microsoft.com/download/msnmessenger/install/5.0/w98nt42kmexp/en-us/setupdl.exe
.. http://messenger.microsoft.com
```
Server disconnects client.
## Newer protocols
*Since [MSNP8](msnp8.md), example using Client Version 6.1.*
```
C: VER 1 MSNP10 MSNP9 CVR0
S: VER 1 CVR0
C: CVQ 2 0x0409 winnt 5.1 i386 MSNMSGR 6.1.0211 MSMSGS example@hotmail.com
S: CVQ 2 7.0.0813 7.0.0813 6.2.0205
.. http://msgr.dlservice.microsoft.com/download/5/d/9/5d9bb5b2-49c7-4890-94ab-d1d5e44a0e6d/Install_MSN_Messenger.exe
.. http://messenger.msn.com
```
Server disconnects client.