Mw CookieSession

Provides cookie-based sessions, and populates req.session. This middleware takes the following options:

• key cookie name defaulting to connect.sess
• secret prevents cookie tampering
• cookie session cookie settings, defaulting to { path: '/', httpOnly: true, maxAge: null }
• proxy trust the reverse proxy when setting secure cookies (via "x-forwarded-proto")

app.use(express.cookieSession())

To clear a cookie simply assign the session to null before responding:

req.session = null