In meteor How do I create a multichatroom app with unique urls for different rooms?

I've got the basic chatroom working (single page), but I'd like to generate a unique one when I browse to my URL. E.g. User browses to chatroom.com and is redirected to chatrooom.com/room1, then s/he can share that url with friends to chat with. How do I go about doing this?

You need a router, you could use backbone or my personal favorite meteor router (installed via meteorite):

mrt install router

in your client js

//In your chat query add something to localise your chat messages for your room e.g (if you're using handlebars):

Template.messages.message = function() {
    //assuming messages contains your collection of chats
    return messages.find({room:Session.get("room")}) //get the room name set in the router
};

And for your router (also in the client js):

Meteor.Router.add({
  '/': 'home',
  '/rooms/:id': function(id) {
     Session.set("room",id); //set the room for the template
     return "messages"; //If you're template is called messages
  },
  '*': 'not_found'

});

So if you were to load /rooms/lobby it would load only the messages with the room value as lobby.

More docs on meteor router here : https://github.com/tmeasday/meteor-router