both client and server must use the class JabberMessage that can be downloaded from Canvas (simply copy it into both projects). JabberMessage has a ‘message’ and ‘data’. The format of the messages required is specified in the section on the Jabber protocol below. You must use the protocol exactly as stated. No other messages are required. Make sure you have read and understood the final lecture (‘wrap up’ (under Week 11 on Canvas) before using this class).