Node.js http.ServerResponse.end() Method

The httpServerResponse.end() is an inbuilt application programming interface of class Server Response within http module which is used to send the signal to the server that all the header has been sent.

Syntax:

response.end(data, Encodingtype, Callbackfunction)

Parameters: This method takes three Parameters

• Data: Chunk of data that has to be sent
• Encoding Type: Type encoding for the data
• Callback: Callback function for further operation if necessary.

Return Value: This method returns this Server Response object.

Example 1: Filename: index.js

Javascript

// Node.js program to demonstrate the
// response.end() 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 connection by using
        // response.connection method
        const value = response.connection;

        // Ending the response
        response.end("port address : " +
            value.address().port, 'utf8', () => {
                console.log("displaying the result...");

                // Closing the server
                httpServer.close(() => {
                    console.log("server is closed")
                })
            });
    });

// Listening to http Server
httpServer.listen(PORT, () => {
    console.log("Server is running at port 3000...");
});

Steps to run:

node index.js

Console output:

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

Browser Output: Paste the localhost address http://localhost:3000/. In the search bar of the browser.

port address : 3000

Example 2: Filename: index.js

Javascript

// Node.js program to demonstrate the
// response.end() method

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

// Request and response handler
const http2Handlers = (request, response) => {

    // Getting connection
    // by using response.connection Api
    const value = response.connection;

    // Display result by using end()
    // api and ending the response
    response.end("family : " +
        value.address().family, 'utf8', () => {
            console.log("displaying the result...");

            httpServer.close(() => {
                console.log("server is closed")
            })
        });
};

// Creating http Server and listening
// on the 3000 port
const httpServer = http.createServer(
    http2Handlers).listen(3000, () => {
        console.log("Server is running at port 3000...");
    });

Steps to run:

node index.js

Console output:

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

Browser Output: Paste the localhost address http://localhost:3000/. In the search bar of the browser.

family  : IPv6

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