Node.js http.IncomingMessage.headers Method
Last Updated :
05 Apr, 2023
The http.IncomingMessage.headers is an inbuilt application programming interface of class IncomingMessage within the HTTP module which is used to get all the request/response headers objects.
Syntax:
const message.headers
Parameters: This method does not accept any argument as a parameter.
Return Value: This method returns all the request/response headers objects.
Example 1:
Filename: index.js
Javascript
const http = require( 'http' );
const PORT = process.env.PORT || 3000;
const httpServer = http.createServer(
function (request, response) {
const value = request.headers;
console.log(value.connection)
response.end( "hello world" , 'utf8' , () => {
console.log( "displaying the result..." );
httpServer.close(() => {
console.log( "server is closed" )
})
});
});
httpServer.listen(PORT, () => {
console.log( "Server is running at port 3000..." );
});
|
Run the index.js file using the following command.
node index.js
Output:
Output: In-Console
Server is running at port 3000...
keep-alive
displaying the result...
Now go to http://localhost:3000/ in the browser, and you will see the following output:
hello world
Example 2:
Filename: index.js
Javascript
const http = require( 'http' );
const http2Handlers = (request, response) => {
const value = request.headers;
console.log(value.host)
response.end( "hello world!!" , 'utf8' , () => {
console.log( "displaying the result..." );
httpServer.close(() => {
console.log( "server is closed" )
})
});
};
const httpServer = http.createServer(
http2Handlers).listen(3000, () => {
console.log( "Server is running at port 3000..." );
});
|
Run the index.js file using the following command.
node index.js
Output:
Server is running at port 3000...
localhost:3000
displaying the result...
Now go to http://localhost:3000/ in the browser, and you will see the following output:
hello world!!
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_message_headers
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