Migrating Ajax web application to web socket

Posted by Bastan on Stack Overflow See other posts from Stack Overflow or by Bastan
Published on 2011-01-08T03:46:49Z Indexed on 2011/01/08 3:54 UTC
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java

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php

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websocket

Hi, I think i'm just missing a little detail that is preventing me from seeing the whole picture.

I have a web application which use ajax request every x time to update client with new information or tasks.

I also have a long running process on the server which is a java computation engine. I would like this engine to send update to the client.

I am wondering how to migrate my web app to using websocket. Probably phpwebsocket or similar. Can my server 'decide' to send information to a specific client? It seems possible looking at the php-websocket.
Can my java backend long process use the websocket server to send notification to a specific client. How? well I can say that my java app could use a class that could send over websocket instead of http.

But how the websocket server knows to which client to send the 'info'. I am puzzle by all this. Any document that explain this in more details? It seems that the websocket could create an instance of my web application.

Thanks

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