Sending HTML to a browser

[joenapoleon]

What happends if a server send a response to an known IP without first the browser sending a request? Is that possible?

Or must a browser send a request first. I'm talking about a situation where the server has already started a session with a particular browser. Can the server send anything to the browser at anytime since it knows the browser's IP and is already in session with it?

It would be like sending one page then in 1 minute send another without the browser refreshing or the user doing any activity.

Has anyone ever done something like this? Is it possible?

[tthurgo]

I don't think so, but I would like to know.

[Nate]

From my knowledge of how servers and clients work when it comes to the web, the information pushed outside of a browser request would probably be ignored. Just because the session won't expire for 20 minutes doesn't mean that the client has a connection with the server that whole time. The browser initiates the socket connection to the server and provides the actual "line" that the web server transmits down. For a server to push a page to a browser by itself would mean that the browser would have to be listening, which would make it a server, and not a client (note: a browser is a client).

Hope that helps,
Nate

[cyber_thug]

An AJAX script it will call html from a server without reloading the page. Check out http://www.dynamicdrive.com