在应用程序和服务器之间打开连接

Question

I want to create connection between app (in mobile device) and server.

Also it would be great to send some info at a time to app and that server would know if that info reached app.

Has anyone tried this?

I would appreciate for any information.

Answer 1

I've tried that for iOS, actually it was an app that required synchronising several devices across a network.

To achieve what you want you need to use sockets. There are two kinds of sockets: TCP and UDP . These are protocols that run on the protocol OSI layer. Read more about TCP/IP stack here .

When you read all this you will understand why you need to use sockets, and specifically TCP sockets, which are the ones than can ensure delivery.

For iOS, I recommend using CocoaAsyncSocket , a third party library that substantially leverages the hassle of using sockets at a low level. For Android I can't tell you right away, but I've used java.net.socket in the past with success, but I'm sure a google search will point you in the right direction.

Answer 2

For Android:

You can use HttpUrlConnection or HttpClient . More here.
To send info from server to device use GCM

Good luck!