req.isSocket

A flag indicating whether or not this request (req) originated from a Socket.io connection.

Usage

req.isSocket;

Example

if (req.isSocket){
  // You're a socket.  Do cool socket stuff like subscribing.
  User.subscribe(req, [req.session.userId]);
}
else {
  // Just another HTTP request.
  // (`req.isSocket` is undefined)
}

Notes

• Useful for allowing HTTP requests to skip calls to PubSub or WebSocket-centric methods like subscribe() or watch() that depend on an actual Socket.io request. This allows you to reuse backend code for both WebSocket and HTTP clients.
• As you might expect, req.isSocket doesn't need to be checked before running methods that publish to other connected sockets. Those methods don't depend on the request, so they work either way.