How to check internet availability in LibGdx?

Question

libgdx

I am making an online game on LibGdx and NodeJS with a connection to a VPS and then I ran into a problem:
The first thing I decided to do is to check the availability of the Internet every time a client enters the game. Well, I turned on the Internet:

And I decided to check with this code:

Here is the interface that is used

and the class

And just a screen that appears if the Internet is available.
Well, on the computer it somehow works, but on the android it displays the program has completed its work.
Help solve the problem!

Answer 1

All Internet requests must be executed in a separate thread