Acknowledgement callback not working because of Line 148: client.go

[someone-coder]

Acknowledgements callbacks, eg. when you Emit("myMessage", data, func(s string){...})
were not working for me.
I dug into it and found it is because of Line 148 of client.go, which is currently:

case _ACK:
case _BINARY_ACK:
  return nil, client.onAck(packet.Id, decoder, packet)

When an _ACK arrives, client.onAck() is never called.
If I change it to this, it works:

case _ACK:
  return nil, client.onAck(packet.Id, decoder, packet)
case _BINARY_ACK:
  return nil, client.onAck(packet.Id, decoder, packet)

I'm using Go 1.6.0

Maybe it should be like this?

case _ACK, _BINARY_ACK:
  return nil, client.onAck(packet.Id, decoder, packet)