从在线服务器输入文本文件的输出

I am developing my first chess game with Qt( C++ GUI ). For that I would like to take input from an online server. It may be just a text file.( Actually Just to take the latest FEN string ). I don't know any way how can I interact with a server. Is there any simple way to interact with a web server or cloud server or just a way to download a text file then read it using Qt.I am developing my first chess game with Qt( C+