Express Tutorial

The OS.js server runs on Express and this turial shows you how access the APIs.

NOTE: A body-parser middleware is used by default to decode both JSON and urlencoded data.

Usage

You can retrieve the Express server and all other related instances via the core class injected into all methods.

  • app - The Express express() instance
  • session - The Express session
  • ws - The Express WebSocket
  • httpServer - The http.Server instance

Routes

You can use the provided methods to set up routes:

const {route, routeAuthenticated} = core.make('osjs/express');

const respond = (req, res) => res.json({result: 'pong'});

// Regular route
route('GET', '/ping', respond);

// Same as above, except requires user to be authenticated
routeAuthenticated('GET', '/ping', respond);

// Same as above, but also requires user to belong to given groups
routeAuthenticated('GET', '/ping', respond, ['admin']);

NOTE: If you want to add routes in the index.js distro file, use the .on('init') event on the core instance.

Sessions

You can access the session via req.session.

Applications

See Application tutorial on how to attach your applications to the server.

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