On Aug 6, 2009, at 8:30 AM, James Lin wrote:

well...I guess you can call it some sort of real time messaging service...

I just need to send a string from iPhoneA to iPhoneB.
And allow iPhoneB to reply with another string back to iPhoneA.

That's all I am trying to do.
I had no idea it is so difficult and involves so much.

given my state of confusion right now, any suggestion you can give me is much appreciated...

I think Push Notifications might be what you need. Phone A sends a message to the server, which uses Push Notification to send a message to Phone B. You can read about Push Notifications on the iPhone dev site (off topic for the Cocoa list).

Dave
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