Express not setting auth cookie

If you are using Express.js for your TypeScript project and are facing an issue where the auth cookie is not being set, there could be a few possible solutions to this problem. In this blog post, we will explore these solutions and provide code snippets for each of them.

Solution 1: Set the cookie domain

One possible reason for the auth cookie not being set is that the cookie domain is not properly configured. By default, Express.js sets the cookie domain to the current domain. However, if your application is running on a subdomain or a different domain altogether, you need to explicitly set the cookie domain.

You can set the cookie domain using the cookie middleware in Express.js. Here’s an example:

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());

app.get('/login', (req, res) => {
  res.cookie('auth', 'your-auth-token', {
    domain: 'your-domain.com',
    httpOnly: true,
    secure: true,
  });
  res.send('Login successful');
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

In the above code snippet, we set the cookie domain to your-domain.com. Make sure to replace it with your actual domain.

Solution 2: Check the cookie path

Another reason for the auth cookie not being set could be an incorrect cookie path. By default, Express.js sets the cookie path to the current path. However, if your application is running on a different path, you need to explicitly set the cookie path.

You can set the cookie path using the cookie middleware in Express.js. Here’s an example:

import express from 'express';
import cookieParser from 'cookie-parser';

const app = express();
app.use(cookieParser());

app.get('/login', (req, res) => {
  res.cookie('auth', 'your-auth-token', {
    path: '/your-path',
    httpOnly: true,
    secure: true,
  });
  res.send('Login successful');
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

In the above code snippet, we set the cookie path to /your-path. Make sure to replace it with your actual path.

By following these solutions, you should be able to resolve the issue of Express not setting the auth cookie in your TypeScript project. Remember to customize the code snippets according to your specific requirements.

Happy coding!

Express not setting auth cookie