What is Node.js http.server.close() Method?

In this article, we will learn Node.js http.server.close() Method,This free Node.js tutorial for complete beginners will help you learn Node.js from scratch.

Node.js http.server.close() Method

Node.js http.server.keepAliveTimeout Property

Node.js http.server.headersTimeout Method

The http.server.close() is an inbuilt application programming interface of class Server within the HTTP module which is used to stop the server from accepting new connections.

Syntax:

const server.close([callback])

Parameters: This method accepts only one optional callback function argument as a parameter.

Return Value: This method returns nothing but a callback function.

Example 1: Filename-index.js

Javascript

// Node.js program to demonstrate the
// server.close() method
 
// Importing http module
const http = require('http');
 
// Setting up PORT
const PORT = process.env.PORT || 3000;
 
// Creating http Server
const httpServer = http.createServer(
    function (request, response) {
 
        // Getting the reference of the
        // underlying socket object
        // by using socket method
        const value = response.socket;
 
        // Display result by using end() method
        response.end("socket buffersize : "
            + value.bufferSize, 'utf8', () => {
                console.log("displaying the result...");
 
                // Closing server
                // by using close() method
                httpServer.close(() => {
                    console.log("server is closed")
                })
            });
    });
 
// Listening to http Server
httpServer.listen(PORT, () => {
    console.log("Server is running at port 3000...");
});

Run the index.js file using the following command:

node index.js

Output:

Server is running at port 3000...
displaying the result...
server is closed

Now run http://localhost:3000/ in the browser and you will see the following output on the screen:

socket buffersize : 0

Example 2: Filename-index.js

Javascript

// Node.js program to demonstrate the
// server.close() method
 
// Importing http module
const http = require('http');
 
// Request and response handler
const http2Handlers = (request, response) => {
 
    // Getting the reference of the
    // underlying socket object
    // by using socket method
    const value = response.socket;
 
    // Display result by using end() method
    response.end("socket local address : "
        + value.localAddress, 'utf8', () => {
            console.log("displaying the result...");
 
            // Closing server
            // by using close() method
            httpServer.close(() => {
                console.log("server is closed")
            })
        });
};
 
// Creating http Server
const httpServer = http.createServer(
    http2Handlers).listen(3000, () => {
        console.log("Server is running at port 3000...");
    });

Run the index.js file using the following command:

node index.js

Output:

Server is running at port 3000...
displaying the result...
server is closed

Now run http://localhost:3000/ in the browser and you will see the following output on the screen:

socket local address : ::1

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

Tags:

#Node.js-HTTP-Module #Node.js-Methods #Node.js #Web Technologies

Node.js http.server.keepAliveTimeout Property

Node.js http.server.headersTimeout Method