Can my own Server communicate with mobile Application directly

[hrnjutt]

I just want to know can my own design server communicate directly with mobile appication (Android ,IOS ,BB). I need to send some information in XML form to the app. Regards

[pritaeas]

It works the other way around, a client contacts a server. So some sort of polling mechanism is required. Although it's possible with node.js I think, but have no experience with it.

[TomH.PG]

pritaeas is correct, the app always needs to initiate the connection to the server before the server can send data to it. The only exception to this would be using a Push Notification system in the Android platform similar to iOS. This would be where your server sends a message to a service on the device/handset and not the client app. Example: https://parse.com/tutorials/android-push-notifications

Implementations such as that result in the background service listening for messages from the remote gateway/api which your server is communicating with also.

You could also tie in the Google Cloud Messaging (GCM) service: http://developer.android.com/google/gcm/index.html