Articles

Off-board Comet: When separate web-servers handle normal connections and Comet connections. On-board Comet: When the web-server that serves your normal content also handles your Comet connections.

When Ajax was the #1 premium buzzword, we had a spate of ‘Ajax security issues’, which were mostly just known browser issues pumped up with a little extra JavaScript. Most web security issues affect Web 1.0 as much as Web 2.0.

Cometd Bayeux is a publish/subscribe messaging system, and this has drawn some criticism that PubSub is not the most flexible paradigm for an Ajax/Comet transport.

This time, we’ve asked our contributors the question: “In your experience with Comet development, what solution to a problem are you most proud of, and how did you accomplish it?”

HTTP Channels is a transport protocol based on the existing messaging capabilities of HTTP and utilizes the concepts of REST for notification of resource changes. HTTP Channels is intended be a Comet solution for RESTful real time data synchronization architecture and can be used as a Bayeux transport, or it can be used stand-alone.

The latest release of the Persevere Server (0.9.5) now includes Comet support. The Persevere Server is a web accessible database and service side JavaScript server that exposes persistent data storage as RESTful HTTP/JSON web services.

There is a lot of confusion about guaranteed messaging. Many products claim some level of guaranteed or reliable messaging, but what does it really mean?

With the increasing interest in Comet and the recent Super Mario Brothers implementation and the Embedding and Encoding JavaScript analysis, I thought it would be interesting to take a look at games based on Comet techniques.

As I write this, we’re waiting for the results of London’s Mayoral election. The position of Mayor has only been around since 2000, and this year a too-close-to-call contest between two of the most colourful politicians in the country has kept the race on the front pages of the papers for weeks.

Comet Gazing is a semi-regular feature on Comet Daily. We pose a question to our Contributors and post the answers. This time, we’ve asked our contributors the question: “What do you find most frustrating about Comet development, and how do you workaround or deal with the issue?”