mod_pubsub Project FAQ: "What is Repubsub?
Exactly how do Mod_pubsub's connections stay open?
Mod_pubsub's clients do not poll the server every so often. Instead, like Jabber, a Mod-pubsub server holds open the connection socket to its clients. The main difference between Mod_pubsub and Jabber is that we use standard HTTP as our wire format, whereas Jabber uses its own XML-based protocol. (Yes, we know that people think HTTP is a polling protocol... but it's not necessarily.)
Are there any other products like Mod_pubsub?
Similar projects include Pushlets, Jabber, and XMLHTTP. Unlike mod_pubsub, Pushlets can only maintain a few simultaneous connections, and require Java programming. With mod_pubsub, if you know how to use HTTP, you can do PubSub. Unlike Jabber, which uses its own XML-based protocol, we use standard HTTP. And Mod-pubsub is easier to work with, supports multiple users viewing the same data stream at the same moment, and is more flexible than XMLHTTP.
Monday, January 03, 2005
Why isn't this precisely what we need for Multichat?