Node.js http.ServerResponse.sendDate Method

The httpServerResponse.sendDate is an inbuilt application programming interface of class Server Response within http module which is used to check if the date header has been sent or not. HTTP header is also used to pass additional information such as Date etc. Refer to this article.

Syntax:

response.sendDate

Parameters: This method does not accept any arguments as a parameter.

Return Value: This method returns true if and only if the date header has been sent.

Example 1: Filename: index.js

Javascript

// Node.js program to demonstrate the
// response.sendDate() APi

// 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) {

        // Checking if date header has been
        // sent or not by using sendDate API
        const value = response.sendDate;

        // Display result
        // by using end() api
        response.end("Date header status: "
            + value, '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.

Date header status: true

Example 2: Filename: index.js

Javascript

// Node.js program to demonstrate the
// response.sendDate() APi

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

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

    // Checking if date header has been
    // sent or not by using sendDate API
    const value = response.sendDate;

    // Display result by using end() api
    response.end("Date header status: "
        + value, 'utf8', () => {
            console.log("displaying the result...");

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

// Creating http Server and listening
// on the port 3000
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.

Date header status: true

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