Upgrade Via HyperRequest Sends Bogus Data At End of Connection

[git-blame]

The example snippet to upgrade a HyperRequest to a websocket client works fine. I'm basing a server on it.

Server::http("0.0.0.0:80").unwrap().handle(move |req: Request, res: Response| {
    match HyperRequest(req).into_ws() {
        Ok(upgrade) => {
...

But there is a problem. At the end of my connection and I return from the handler, a client receives some "bogus" data. This data is due to the fact that the res in the handler is unused. According to the hyper doc
(https://docs.rs/hyper/0.10.6/hyper/server/response/struct.Response.html):

There is a Drop implementation for Response that will automatically write the head and flush the
body, if the handler has not already done so, so that the server doesn't accidentally leave
dangling requests.

My work-around is to flush the stream and wait a bit, hoping that the client has closed the connection upon receiving the Close message.

It would be nice if there was an accept/reject function that writes to res. In this way, res is marked as processed and won't get flushed.