Long – distance communication

Thanks to communication protocols such as File Transfer Protocol (FTP) and Simple Mail Transfer Protocol (SMTP), it is possible to write to, or receive a letter from, someone on the entire other side of the globe within a few seconds of them having sent it. This feat of engineering is made possible by a robust, resilient physical infrastructure supporting the internet as a whole, and by the end of this book, the target is for you to have the skills necessary to develop these kinds of applications.

With peer-to-peer communication protocols, we can build systems of networked multiplayers for real-time, high-intensity, high-action games.