I'm trying to connect via the SocketIO Ruby gem.  When I try to subscribe to the trades channel the following string is passed to the server: ""\x003:::{\"channel\":\"dbf1dee9-4f2e-4a08-8cb7-748919a71b21\",\"op\":\"subscribe\"}\xFF".  The server response with a json message: {"op":"remark","success":false,"message":"Unknown command","debug":{"op":"client","uuid":"5a1f3b8f-1e03-462b-bd38-e463bb39ff2e","data":{"channel":"dbf1dee9-4f2e-4a08-8cb7-748919a71b21","op":"subscribe"}}}

The "data" field seems to be the message I intended to submit, but the subscribe fails with "Unknown command".  Any help would be appreciated.