Checking online users with Facebook Javascript SDK

Posted by Roman on Stack Overflow See other posts from Stack Overflow or by Roman
Published on 2010-06-05T20:28:58Z Indexed on 2010/06/05 20:32 UTC
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JavaScript

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facebook-api

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social-networking

Hi,

I'm trying to build some kind of a social game in facebook, where I need that every user that has approved my APP is able to receive notifications from me.

When the user approves my App, I save his UID in the DB for future reference.

At some later time, I want to make it possible for other users find partners for a game - so I need a way to pick randomly some user from my DB and check if he's online. Then, send him a message and propose to play with the current player.

So 2 questions:

How can I check if some user is online, using Javascript SDK? It seems that in the new Graph API I can't get the users' online status.
How can I then send him a message and propose to play the game? When he approves to play - he is being forwarded to the game page.

Many thanks in advance,

Roman

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