Re: [hybi] Web sockets and existing HTTP stacks

[Jamie Lokier <[e-mail]>]

Jamie Lokier wrote:
> Greg Wilkins wrote:
> > Maciej Stachowiak wrote:
> > >> Then if we ever get HTTP/1.2 or HTTP/2.0, websocket will not break!
> > >
> > > If the client tries to upgrade an HTTP/1.1 request to WebSocket and the
> > > server gives an HTTP/1.2 or HTTP/2.0 response, then it had better break!
> > > We'll need to adjust the client side of the protocol before we can let
> > > servers respond with different versions of HTTP.
> > 
> > Why?
> > 
> > Saying HTTP/1.2 in a response line does not make the response
> > version 1.2. The version of the response is controlled by the version of
> > the request. The version in  the response says what the server is capable
> > of.  A HTTP/1.2 capable server should be able to server 1.0 websocket
> > clients without further breaking the http protocol by hacking about its
> > version for one particular upgrade protocol.
> 
> This is not an issue, because a WebSocket server knows it's responding
> to a WebSocket/1.0 client and can send the required response.

The real trouble is how will a WebSocket/1.1 client interoperate with
a WebSocket/1.0 server, without trying, failing, then starting another
connection to try again which is wasteful and not entirely reliable.

-- Jamie