Node.js http.IncomingMessage.rawTrailers Method
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
