Archive for category XMPP

Find Invisible Users In Gmail

Finding who is invisible is something that I always wanted to do.It’s always fun to ping a person who feels none can see him/her online. While studying XMPP protocol I found out that even when the person is offline the chat client knows that person is online.
The Chat Client should know who all are really online at any given time.This is because even when the person is invisible he/she should have a buddy list showing online users.

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