Technical requirements
To properly test the echo server, you’ll need the netcat (nc) tool. By default, this is installed on Linux and macOS. For Windows users, you can get it from https://joncraton.org/blog/46/netcat-for-windows/.
The code in this chapter uses HTTP v1.5, URIs v1.4, and WebSockets v1.5.10.
We will also use Postman. There is a free version that you can download from https://www.postman.com/downloads/.
The source code for this chapter can be found at https://github.com/PacktPublishing/Web-Development-with-Julia-and-Genie/tree/main/Chapter2.