emit errors to spark

[omnidan]

Right now, I have:

primus.on('connection', function connection(spark, next) {
  spark.on('error', function(err) { });
  next('handshake error');
}

The next function emits an error event to the spark, which I want to relay to the client.

Primus should support something similar to this: http://socket.io/docs/server-api/#namespace%23use(fn:function):namespace (Errors passed to middleware callbacks are sent as special error packets to clients.)

[Maarethyu]

+1