code: function expressInit( req, res, next ) {
  	req.next = next;
  	req.context = {};
  	// patching this according to how express does it
  	// not jshint ignoring the following lines because then it
  	// warns that expreq and expres aren't used.
  	// This works according to express implemenetation
  	// DO NOT CHANGE IT
  	req.__proto__ = expreq;
  	res.__proto__ = expres;
  
  	next();
  }
docs: adaptation of express's initializing middleware the original approach breaks engine-io