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HTTP Request vs HapiJS Request in Node.js
  • Last Updated : 15 Sep, 2020

Node.js: Node.js is an open-source and cross-platform runtime environment for executing JavaScript code outside a browser. You need to remember that NodeJS is not a framework and it’s not a programming language. Most of the people are confused and understand it’s a framework or a programming language. We often use Node.js for building back-end services like APIs like Web App or Mobile App.

Creating and Binding Server: Create a server instance using createServer() method and bind it to some port using listen() method.



Syntax:

const server = http.createServer().listen(port)

Parameter: This method (listen()) accepts a single parameter as mentioned above and described below:

  • port <Number>: Ports are in the range 1024 to 65535 containing both registered and Dynamic ports.

The below example illustrates the use of http module in Node.js.

Example 1:   Filename: index.js




// Node.js program to create  
// http server  
  
// Using require to access http module  
const http = require("http");
  
// Port number
const PORT = process.env.PORT || 2020;
  
// Creating server
const server = http.createServer(
  // Server listening on port 2020
  function (req, res) {
     res.write('Hello geeksforgeeks!');  
     // Write a response to the client
     res.end();  
  }
)
.listen(PORT, error => {
  // Prints in console
  console.log(`Server listening on port ${PORT}`)
});

Run index.js file using the following command:

node index.js

Output:

Server listening on port 2020

Now type http://127.0.0.1:2020/ OR http://localhost:2020/ in a web browser to see the output.



Creating Server: The above syntax imports the “Hapi” module and now it creates a server. It communicates the request and response with the client and the server. It requires PORT <number> and host <string> to communicate.

Syntax:

const server = Hapi.server({port: 2020, host: 'localhost'});

Parameter: This method accepts two parameters as mentioned above and described below:

  • PORT <Number>: Ports are the endpoints of communication which helps to communicate with the client and the server.
  • HOST <String>: It accepts the host names like localhost/127.0.0.1, google.com, geeksforgeeks.org, etc.

The below example illustrates the HapiJS module in Node.js.

Example 2: Filename: index.js




// Node.js programe to create server
// using hapi module
  
// Importing hapi module
const Hapi = require('@hapi/hapi');
  
// Creating Server
const server = Hapi.server({
   port: 2020,
   host: 'localhost'
});
  
// Creating route
server.route({
    method: 'GET',
    path: '/',
    handler: (request, hnd) => {
        return 'Hello GeeksForGeeks!';
    }
});
  
const start = async () => {
  await server.start();
  console.log('Server running at', server.info.uri);
};
  
process.on('unhandledRejection', (err) => {
  console.log(err);
  process.exit(1);
});
start();

Run index.js file using the following command:

node index.js

Output:

Server running at: http://localhost:2020

Now type http://127.0.0.1:2020/ OR http://localhost:2020/ in a web browser to see the output.

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