Enjoying working through the book. Thanks for writing it!
Regarding Dig in Chapter 7: The first disco request seems to work fine, but when I click on the conference.jabber.org reference in the outline, it highlights and I receive a 404 not found error. A screen shot with the HXR requests logged in Chrome are visible at:
Any suggetions? I downloaded the source directly from the book site and modified dig.js
to use bosh.metajack.im:5280/xmpp-httpbind. I am not using the flXHR library. Eventually targeting mobile so want to use CORS.