this.stream.read() is undefined

When i pass my stream object to shareJS, it throws error. But i'm totally sure that it is normal stream. Streams just don't have read() method

This is example using faye-websocket implementation

``` coffee
http = require 'http'
share = require 'share'
WebSocket = require 'faye-websocket'

server = http.createServer()
server.on 'upgrade', (request, socket, body) ->
if WebSocket.isWebSocket(request)
ws = new WebSocket(request, socket, body)
shareClient = share.server.createClient(backend: backend)
shareClient.listen(ws.pipe(ws))
```

I also try to pass in stream from SockJS, having the same error.