Node.js http.server.maxHeadersCount Property
The http.server.maxHeadersCount is an inbuilt application programming interface of class Server within the HTTP module which is used to get the maximum number of incoming headers to count.
Syntax:
const server.maxHeadersCount
Parameters: This property does not accept any argument as a parameter.
Return Value: It does not return any value.
Example 1: Filename-index.js
Javascript
// Node.js program to demonstrate the // server.maxHeadersCount property // 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 // by using listen() method httpServer.listen(PORT, () => { console.log( "Server is running at port 3000..." ); }); // Getting max header count // by using maxHeadersCount method const v = httpServer.maxHeadersCount // Display the result console.log( 'maximum header count :-' + v) |
Run the index.js file using the following command:
node index.js
Output:
maximum header count :-null 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.maxHeadersCount 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" ) }) }); }; // Listening to http Server // by using listen() method const httpServer = http.createServer( http2Handlers).listen(3000, () => { console.log( "Server is running at port 3000..." ); }); // Getting max header count // by using maxHeadersCount method const v = httpServer.maxHeadersCount if (v || v > 1) { console.log( "maximum header count is greater than 1" ) } else { console.log( "maximum header count is less than 1" ) } |
Run the index.js file using the following command:
node index.js
Output:
maximum header count is less than 1 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_maxheaderscount