Please start your favorite Julia editor and open the sixdegrees/ folder we used in the previous chapter. It should contain all the files that we've worked on already—six_degrees.jl, plus the Articles, Database, Gameplay, and Wikipedia modules.

Add a new file for our web app. Since the code will be more complex this time and should integrate with the rest of our modules, let's define a WebApp module within a new WebApp.jl file. Then, we can add these first few lines of code:

module WebApp 
 
using HTTP, Sockets 
 
const HOST = ip"0.0.0.0" 
const PORT = 8888 
const ROUTER = HTTP.Router...