next-session

next-session

Simple session middleware for Next.js 9 API Routes.

Installation

npm install --save next-session

Usage

import session from 'next-session';

const handler = (req, res) => {
  if (req.session.views) {
    //  On later visits, increase # of views by one on every request
    req.session.views += 1;
  } else {
    //  On first visit, set # of views to 1
    req.session.views = 1;
  }
  res.send(`In this session, you have visited this page ${req.session.views} time(s).`)
};

//  wrap handler with session middleware and include options
export default session(handler, {
  name: 'sid',
  cookies: {
    secure: true,
    maxAge: 1209600000,
  },
});

session(handler, options)

Create a session middleware for handler with the given options.

handler

See Next.js 9 API Routes.

options

next-session accepts the properties below.

options	description	default
name	The name of the cookie to be read from the request and set to the response.	sessionId
store	The session store instance to be used.	MemoryStore
generateId	The function to generate a new session ID. This needs to be a function that returns a string.	crypto.randomBytes(16).toString('hex')
cookie.secure	Specifies the boolean value for the Secure Set-Cookie attribute. If set to true, cookie is only sent to the server with an encrypted request over the HTTPS protocol.	false
cookie.httpOnly	Specifies the boolean value for the httpOnly Set-Cookie attribute. If set to true, cookies are inaccessible to client-side scripts. This is yo help mitigate cross-site scripting (XSS) attacks.	true
cookie.path	Specifies the value for the Path Set-Cookie attribute. This indicates a URL path that must exist in the requested URL in order to send the Cookie header	unset
cookie.domain	Specifies the value for the Domain Set-Cookie attribute. Only allowed hosts to receive the cookie. If unspecified, it defaults to the host of the current document location, excluding subdomains. If Domain is specified, then subdomains are always included.	unset
cookie.sameSite	Specifies the value for the SameSite Set-Cookie attribute. This lets servers require that a cookie shouldn't be sent with cross-site (where Site is defined by Domain attribute) requests, which provides some protection against cross-site request forgery attacks ( CSRF).	unset
cookie.maxAge	Specifies the value for the Max-Age Set-Cookie attribute. The value must be in miliseconds. Determine the length of time before the cookies expire. If unspecified, the cookies will expire when the client closes (Session cookies).	unset (Session)

req.session

This allows you to set or get a specific value that associates to the current session.

//  Set a value
if (loggedIn) req.session.user = 'John Doe';
//  Get a value
const currentUser = req.session.user; // "John Doe"

req.session.destroy()

Destroy to current session and remove it from session store.

if (loggedOut) req.session.destroy();

req.session.id

The unique id that associates to the current session. This should not be modified.

Session Store

The session store to use for session middleware (see options above).

Implementation

A compatible session store must include three functions: set(sid), get(sid), and destroy().

All functions should return Promises (callbacks are not supported). For an example of a session store implementation, see MemoryStore.

Compatible stores

Make a PR to add your own compatible stores here.

Contributing

Please see my contributing.md.

License

MIT