Saturday, April 28, 2007

Applications using Reverse Ajx

clipped from today.java.net


Developing Applications Using Reverse Ajax
Developing Applications Using Reverse Ajax

Developing Applications Using Reverse Ajax

The three techniques DWR supports are:

Polling
Comet
At regular and frequent intervals, the browser sends requests to
the server to see if the page has been updated.
After a request has been received from the browser, the server
keeps the reply open so that it can pass down information when it
arrives. This is also known as a long-lived HTTP
connection
.
Piggyback
When the server has an update to send, it waits for the browser
to make a request and then sends the update in addition to the
requested information.

The JavaChat Web Page

The chat web page

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