Node.js http.ClientRequest.reusedSocket Property

The http.ClientRequest.reusedSocket is an inbuilt application programming interface of class ClientRequest within the HTTP module which is used to check if the request is sent through a reused socket.

Syntax:

const request.reusedSocket

Parameters: This property does not accept any argument as a parameter.

Return Value: This property returns the object of the client request-host.

Example 1: Filename-index.js

Javascript

// Node.js program to demonstrate the
// request.reusedSocket method

// Importing http module
const http = require('http');

// Create an HTTP server
const server = http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('okay');
});

// Now that server is running
server.listen(3000, '127.0.0.1', () => {

  // Make a request
  const options = {
    port: 3000,
    host: '127.0.0.1',
    headers: {
      'Connection': 'Upgrade',
      'Upgrade': 'websocket'
    }
  };

  // Getting client request
  const req = http.request(options);

  req.host = '127.0.0.1'

  // Checking if the message has been
  // sent through reusedSocket or not
  // by using reusedSocket method
  const v = req.reusedSocket;

  // Display the result
  if (v)
    console.log("message is sent through reusedSocket")
  else
    console.log("message is not sent through reusedSocket")

  process.exit(0)
});

Run the index.js file using the following command:

node index.js

Output:

message is not sent through reusedSocket

Example 2: Filename-index.js

Javascript

// Node.js program to demonstrate the
// request.reusedSocket method

// Importing http module
const http = require('http');

// Create an HTTP server
http.createServer((req, res) => { })
  .listen(3000, '127.0.0.1', () => {

  // Getting client request
  const req = http.request({
    port: 3000,
    host: '127.0.0.1',
  });

  // Checking if the message has been
  // sent through reusedSocket or not
  // by using reusedSocket method
  if (req.reusedSocket)
    console.log("message is sent through reusedSocket")
  else
    console.log("message is not sent through reusedSocket")

  process.exit(0)
});

Run the index.js file using the following command:

node index.js

Output:

message is not sent through reusedSocket

Reference: https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_request_reusedsocket