// Error is sent by a party when the other party has done something erroneous. The
// valid error codes are:
// 
//   - 0: General, unspecified error 
// 
// The description field, if specified, determines a human-readable error to be
// shown to the user. The sending party must immediately close the transaction
// after this message is sent.
M0000 Error {
	0000 Code        U16,
	0001 Description ?String,
}

// Success is sent by a party when it has successfully completed a task given to it
// by the other party. The sending party must immediately close the transaction
// after this message is sent.
M0001 Success {
	
}

// Join is sent by the client when it wishes to join a room. It must begin a new
// transaction, and that transaction will persist while the user is in that room.
// Messages having to do with the room will be sent along this transaction. To
// leave the room, the client must close the transaction.
M0200 Join {
	0000 Room     String,
	0001 Nickname String,
}

// Chat is sent by the client when it wishes to post a message to the room. It is
// also relayed by the server to other clients to notify them of the message. It
// must be sent within a room transaction.
M0300 Chat {
	0000 Content  String,
	0001 Nickname String,
}

// JoinNotify is sent by the server when another client joins the room. It must be
// sent within a room transaction.
M0400 JoinNotify {
	0000 Nickname String,
}

// LeaveNotify is sent by the server when another client leaves the room. It must
// be sent within a room transaction.
M0401 LeaveNotify {
	0000 Nickname String,
}