The http.IncomingMessage.rawTrailers is an inbuilt application programming interface of class IncomingMessage within HTTP module which is used to get the raw request/response trailer keys and values exactly as they were received.
Syntax:
const message.rawTrailers
Parameters: This method does not accept any argument as a parameter.
Return Value: This method returns the raw request/response trailer keys and values exactly as they were received.
Example 1: Filename: index.js
// Node.js program to demonstrate the // request.rawTrailers 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 rawTrailers by using
// request.rawTrailers method
const value = request.rawTrailers
console.log(value)
// Display result
response.end( "rawTrailers" , value, 'utf8' , () => {
console.log( "displaying the result..." );
httpServer.close(() => {
console.log( "server is closed" )
})
});
});
// Listening to http Server httpServer.listen(PORT, () => { 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... [] displaying the result... server is closed
Now go to http://localhost:3000/ in the browser, and you will see the following output:
rawTrailers
Example 2: Filename: index.js
// Node.js program to demonstrate the // request.rawTrailers method // Importing http module const http = require( 'http' );
// Request and response handler const http2Handlers = (request, response) => { // Getting rawTrailers
// by using request.rawTrailers method
const value = request.rawTrailers;
if (!value) console.log( 'No rawTrailers added' )
// Display result
response.end( "rawTrailers" + value, 'utf8' , () => {
console.log( "displaying the result..." );
httpServer.close(() => {
console.log( "server is closed" )
})
});
}; // Creating http Server 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... No rawTrailers added displaying the result... server is closed
Now go to http://localhost:3000/ in the browser, and you will see the following output:
rawTrailers
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/http.html#http_message_rawtrailers