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VER is a command introduced with MSNP2.

It specifies which protocols the client can accept, and which one the server likes the best.

Client/Request

VER TrID dialect-name {dialect-name ...}

Where (possibly multiple) dialect-name(s) being the versions of the protocol your client can use.

Server/Response

VER TrID preferred-dialect-name

Where preferred-dialect-name is the preferred version of the protocol the server will continue to use. The highest is usually preferred, unless it isn't supported by the server.

If the server's preferred-dialect-name is 0, that means it doesn't want to use any of the protocols you have specified. A forced disconnect is to be expected in this circumstance.

This command can only be sent once. Any further uses of this command in the same session is Undefined Behavour.

Examples

Unsupported Protocols

C: VER 1 DISREGARDANCE FOR A REAL PROTOCOL
S: VER 1 0

Server closes connection.

Supported Fallback Protocol

C: VER 2 MSNP2 CVR0
S: VER 2 CVR0

Supported Primary Protocol

C: VER 3 MSNP8 CVR0
S: VER 3 MSNP8

Known changes

Removed in MSNP24.

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