Node.js by Example: HTTP Server

Writing a basic HTTP server is easy using the http package.

 
import http from "node:http";

Create the server which takes a handler function as an argument.

 
const server = http.createServer((req, res) => {

The URL that was called

 
    console.log(req.url);

Write as the response to the request

 
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.write("This is the response");
    res.end();
});

Starts the simple http server locally on port 3000

 
server.listen(3000, '127.0.0.1', () => {
    console.log('Listening on 127.0.0.1:3000');
});

Run the server in the background.

 
$ node http-server.mjs &
Listening on 127.0.0.1:3000

Once a request is made, the url is printed out.

 
/hello

Access the /hello route.

 
$ curl localhost:8090/hello
This is the response

Next example: .

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