Pro HTML5 Programming, by Peter Lubbers, Brian Albers, Frank Salim, is a book that aims to help developers build HTML5 applications that tap the full potential of modern browsers. The main areas of focus are: Communication APIs, Canvas API, Geolocation API, Web Sockets API, Web Storage API, Web Workers API and HTML5 Audio and Video.
Deploying HTML5 is a book written by Aditya Yadav, a former Sr. Architect for ThoughtWorks and actual CTO of a consultancy firm, explaining the HTML5 standard components, showing how they are implemented across major browsers and providing code samples for using them.
Peter Lubbers explains in this article how HTML5 Web Sockets interact with proxy servers, and what proxy configuration or updates are needed for the Web Sockets traffic to go through. 11