Arduino Yun Rev 2 | communication with android app?

Hello,

At first, im new in the Arduino section.
i have build an android App with Android Studio to control and overlook some data of my arduino yun.

But does anyone know how to communicate with the arduino yun?
The Smartphone and the yun are in the same Network. Do i need to set up an Webserver or is there any protocol to communicate over? Maybe a TCP protocol? And how to set this up.
I havent got any clue.

Thanks for helping me.

But does anyone know how to communicate with the arduino yun?
The Smartphone and the yun are in the same Network. Do i need to set up an Webserver or is there any protocol to communicate over? Maybe a TCP protocol? And how to set this up.

That's up to you. There are examples in the Yun section of the IDE for both TCP and web servers.