I am trying to implement a chat application in IOS. In general We use two php files one for posting a message(sender) another for retrieving the message(receiver).
I want to accomplish the following: Consider A(sender) and B (Receiver).
A sent message to B. And A is waiting for B's reply. So i need to call post-api.php for sending a message and at the receivers side(B) i need to retrieve using getapi.php when B reply to A it must automatically appear in my inbox(live chatbox) of A, without calling getapi.php. I know this scenario is not possible. But is there any solution or method so that my chat application works like skype or facebookchat.