Using iPad as a web service / server / Listener

[lukin4intellect]

Hi

I am building an iPad app that will receive some information from smartphones (iphone, win7, android etc.) and display it on the iPad to the user. How can I create a web service or listener app on the iPad so these smartphones can talk to it? Is this possible? and if so, what classes/modules do I need?

of course the iPad will have to be kept ON for the smartphones to talk to it; I am aware of this issue. I guess when this iPad app is turned on, we can disable sleep or turning off.

thanks

Moazzam