Intro

So we installed NodeJS on our machine.

Now we want to learn how to create a simple server using the HTTP module.

Write a simple script

• Open your terminal
• Create a file named index.js:

touch index.js

• Add this JavaScript code into it:

// import http module
const http = require("http");

// server configuration
const HOST = "127.0.0.1";
const PORT = 8080;

// create the server
const server = http.createServer((req, res) => {
  res.end("Hello!");
});

// make the server listen to requests
server.listen(PORT, HOST, () => {
  console.log(`Server running at: http://${HOST}:${PORT}/`);
});

Note: This is an extremely simple server. I would recommend you to read the docs of the HTTP module, especially how headers work and how to send them.

Run it from the terminal

• Run it:

node index.js

• Result:

Server running at: http://127.0.0.1:8080/

Now you can click on the link and reach your created server.

Further Reading

• HTTP module
• Anatomy of an HTTP Transaction
• HTTP/2 module
• HTTPS module

Questions

• Do you use the native HTTP/HTTPS module or some libraries like express? Why do you use it?