Message types

Our protocol is build in a way that is very easy to extend. This is before the message types are assigned in hierarchal order so you could very easily add a completely new class of messages to the protocol.

The convention of the messages is as follows:

Preliminaries:

Predefined constants.

means that the message is of type and that it is a message from the client to the server.

means that the message is of type and that it is a message from the server to the client.

Messages from the client to the server:

• - Request for login. Body: uin, password, nick.

• - Send message. Body: destination uin, message text.

• - Add user to contact list. Body: uin, name.

• - Remove user from contact list. Body: uin.

• - Disconnect. Body: empty.

Messages from the server to the client:

• - Authorize login. Body: empty.

• - Login refused. Body: empty.

• - Received message. Body: from uin, text.

• - Update user status. Body: uin, new status.

• - Inform disconnected. Body: empty.

• - Push contact. Body: uin, nick.