Node.js http.IncomingMessage.httpVersion Method

The http.IncomingMessage.httpVersion is an inbuilt application programming interface of the class Incoming Message within http module which is used to get the HTTP version sent by the client. The most commonly used version is HTTP/1.1.

Syntax:

request.httpVersion

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

Return Value: This method returns the HTTP version sent by the client.

Example 1: Filename: index.js

javascript

// Node.js program to demonstrate the
// request.httpVersion 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 httpVersion by using
        // request.httpVersion Api
        const http_version = request.httpVersion;

        // Display the result
        response.end("Httpversion : "
            + http_version, '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 the application:

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.

Example 2: Filename: index.js

javascript

// Node.js program to demonstrate the
// request.httpVersion Method

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

// Request and response handler
const http2Handlers = (request, response) => {
    // Getting httpVersion by using
    // request.httpVersion Api
    const http_version = request.httpVersion;

    // Display result
    response.end("Httpversion : "
        + http_version, 'utf8', () => {

            console.log("displaying the result...");

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

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

Steps to run the application:

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.

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