Sails is built on Express, and uses Node's HTTP server conventions. Because of this, you can access all of the Node and Express methods and properties on the
req object wherever it is accessible (in your controllers, policies, and custom responses).
A nice side effect of this compatibility is that, in many cases, you can paste existing Node.js code into a Sails app and it will work. And since Sails implements a transport-agnostic request interpreter, the code in your Sails app is WebSocket-compatible as well.
Sails adds a few methods and properties of its own to the
req object, like
req.allParams(). These features are syntactic sugar on top of the underlying implementation, and also support both HTTP and WebSockets.