We'll be using sample applications available in the GitHub repo for the book here: https://github.com/PacktPublishing/Hands-On-Network-Programming-with-CSharp-and-.NET-Core/tree/master/Chapter 11.
Check out the following video to see the code in action: http://bit.ly/2HY61eo
We'll also be continuing to leverage the tools we used in Chapter 8, Sockets and Ports. Specifically, if you haven't already done so, I recommend installing Postman, from here: https://www.getpostman.com/apps Or you can install the Insomnia REST client, which can be found here: https://insomnia.rest/