Let's take the example of Biff Tannen (
firstname.lastname@example.org) and his gang hanging out at Lou's café, which we'll refer to as
Notice that a chat room address looks just like a JID! The MUC room itself will sit on a domain handled by an XMPP server and the
local part becomes the identifier of the room itself, in this case,
gang. This means that an MUC room is just a JID that you can talk to.
Now, joining a non-password-protected room is simple: no, wait! It's really simple. In essence, all we do is send a directed Presence (remember that from Chapter 2, Diving into the Core XMPP Concepts?) to the room we want to join with a chosen nickname (more on that later) and, provided it is not taken, we're in!
Let's say Marty turns ...