Use something smarter than Show/Read for the websockets protocol

[nomeata]

I just tried to use Data.Serialize with generic deriving, but am stuck. While Network.WebSockets (the server side) has no problems sending binary data (as a ByteString) over the wire, the corresponding support in ghcjs, at https://github.com/ghcjs/ghcjs-base/blob/master/JavaScript/Web/MessageEvent.hs, seems to be shaky. I might get a Blob out, but I do not see how to get a ByteString out.

I think I was at this point before, so I record this here.

Either I need to figure out how to work with ByteString in GHCJS, or use a different serialization library which targets Data.Text.

[nomeata]

There is some conversion code in https://hackage.haskell.org/package/reflex-dom-0.3/candidate/src/src-ghcjs/Reflex/Dom/Internal/Foreign.hs but ideally I’d like to use something more polished.

[nomeata]

Let’s see if the internets can help at http://stackoverflow.com/q/41007007/946226