TCP_NODELAY on client

[1tgr]

How can I set nodelay on an HTTP client connection? If it's not exposed by hyper, can I get access to the underlying TcpStream so I can call TcpStream::set_nodelay?

[seanmonstar]

There's no super easy way currently. You could make a connector that wraps the HttpConnector, accessing the TcpStream there.

I'd be fine with this being an option on HttpConnector directly ...

[1tgr]

Thanks, I came up with this wrapper for now:

pub struct HttpNoDelayConnector(HttpConnector);

impl Service for HttpNoDelayConnector {
    type Request = Uri;
    type Response = TcpStream;
    type Error = io::Error;
    type Future = Box<Future<Item=Self::Response, Error=Self::Error>>;

    fn call(&self, uri: Uri) -> Self::Future {
        Box::new(self.0.call(uri).and_then(|s| {
            s.set_nodelay(true)?;
            Ok(s)
        }))
    }
}

Will see if I can put together a pull request to set this directly on HttpConnector. With HTTP, I'm not sure there's a reason not to make TCP_NODELAY the default.