Express.js – req.signedCookies Property

Express JSServer Side ProgrammingProgramming

req.signedCookies contains the signed cookies (ready for use) sent by the request while using the cookie-parser middleware. Signed cookies exist in a different object to show the developer intent, else a malicious attack could be made on the request.cookie values that are relatively easy to spoof.

The property defaults are set to "{ }", if no cookies are sent.

Syntax

req.signedCookies

Installing the cookie-parser module

npm install cookie-parser

Example 1

Create a file with the name "reqSignedCookies.js" and copy the following code snippet. After creating the file, use the command "node reqSignedCookies.js" to run this code as shown in the example below −

// req.signedCookies() Method Demo Example
// Importing the express & cookieParser module
var cookieParser = require('cookie-parser');
var express = require('express');

// Initializing the express and port number
var app = express();

// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Defining the cookieParser to be used
app.use(cookieParser());

// Defining an api endpoint
app.get('/api', function (req, res) {
   req.signedCookies.title='TutorialsPoint';
   console.log(req.signedCookies);
   res.send();
});
app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Output

Hit the following Endpoint with a GET request: localhost:3000/api

C:\home
ode>> node reqSignedCookies.js Server listening on PORT 3000 [Object: null prototype] { title: 'TutorialsPoint' }

Example 2

Let's take a look at one more example.

// req.signedCookies() Method Demo Example

// Importing the express & cookieParser module
var cookieParser = require('cookie-parser');
var express = require('express');

// Initializing the express and port number
var app = express();

// Initializing the router from express
var router = express.Router();
var PORT = 3000;

// Defining the cookieParser to be used
app.use(cookieParser());

// Defining an api endpoint
app.get('/api', function (req, res) {
   // Setting multiple cookies
   req.signedCookies.title='Mayank';
   req.signedCookies.age=21;
   console.log(req.signedCookies);
   res.send();
});

app.listen(PORT, function(err){
   if (err) console.log(err);
   console.log("Server listening on PORT", PORT);
});

Output

Hit the following Endpoint with a GET Request: localhost:3000/api

C:\home
ode>> node reqSignedCookies.js Server listening on PORT 3000 [Object: null prototype] { title: 'Mayank', age: 21 }
raja
Updated on 06-Apr-2022 08:26:34

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