Node.js http.ClientRequest.maxHeadersCount API

The http.ClientRequest.maxHeadersCount is  an inbuilt application programming interface of class ClientRequest within http module which is used to get the maximum response headers count Limit.

Syntax:

const request.maxHeadersCount

Parameters: This API does not accept any argument as parameter.

Return Value : This method returns the maximum response headers count Limit.

Example 1:

index.js

// Node.js program to demonstrate the
// request.maxHeadersCount APi

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

// Create an HTTP server
const server = http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('okay');
});

// Now that server is running
server.listen(3000, '127.0.0.1', () => {

  // make a request
  const options = {
    port: 3000,
    host: '127.0.0.1',
    headers: {
      'Connection': 'Upgrade',
      'Upgrade': 'websocket'
    }
  };

  // getting client request
  const req = http.request(options);

  req.maxHeadersCount = 200

  // getting maxHeadersCount
  // by using maxHeadersCount api
  const v = req.maxHeadersCount;

  // display the result
  console.log("maxHeadersCount :- " + v)

  process.exit(0)
});

Output:

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