What is the removeHeader() method in Node.js?

request.removeHeader(NAME);

NAME: - When we set the header, it takes a name with value. You need to pass that name here to remove the header from the request.

Code

See the following code to remove the header.

const http = require('http')
const port = 8080
const server = http.createServer((req,res)=>{
  res.end();
});
server.listen(port, () => {
  console.log(`Server running at port ${port}...\n\n`)
  var options = {
    port: 8080,
    host: '127.0.0.1',
  }; 
  
  var request = http.request(options);
  request.setHeader('Cookie', ['type=ninja', 'language=javascript']);
  let header1 = request.getHeader('Cookie'); 
  
  console.log("Before removing the header from the actual request:");
  console.log("header 1 = ",header1);
  request.removeHeader('Cookie');
  header1 = request.getHeader('Cookie');
  console.log("\n\nAfter removing the header from the actual request:");
  console.log("header 1 = ",header1);
  request.end();
})
setTimeout(()=>{
  server.close()
},2000)

Explanation

Line $1$ : We import the HTTP module.
Line $3$ : We define the port number of the server.
Line $5$ : We use http.createServer() to create a server and listen on port 8080.
Line $9$ : We listen to the server using server.listen()-, and after that, make the request to the callback function.
Line $12$ : We define an object for making a request with options we want.
Line $17$ : We make a HTTP request using http.request(). By default this is a get() request with parameters defined in the options.
Line $19$ , We set the header of the request using request.setHeader().
Line $20$ and $26$ : We get the header by passing the header name-, and storing it into a variable.
Line $25$ : We use request.removeHeader(Name) with the name of the header we want to remove.
Line $23$ and $29$ : We print the header value we got from lines $20$ and $26$ , to check whether we have successfully removed the header or not.
Line $30$ : request.end() is important, as it finishes the request. If we do not use end(), the request will be made, but the server will wait for the incoming data until end() is called.
Line $33-35$ : We’ll use setTimeout() because Educative’s running server feature won’t stop until we stop it by calling server.close(). It will still give you the desired result but with an execution time out error. You don’t need to write this on your personal machine.

License: Creative Commons-Attribution-ShareAlike 4.0 (CC-BY-SA 4.0)

Learn in-demand tech skills in half the time

PRODUCTS

Mock Interview

New

Courses

Skill Paths

Projects

Assessments

What is the removeHeader() method in Node.js?

About the method

Parameter

Syntax

Code

Explanation