Connect through a proxy if environment variables are set.

[ulrichard]

It would be nice, if a connection was established through proxies as specified in the env vars: http_proxy, https_proxy, HTTP_PROXY or HTTPS_PROXY
It looks like hyper has support for it, but requires the client to read the env vars.

[whizsid]

I would like to work on this feature.

[tomusdrw]

@whizsid Great! Seems there is an example here: https://github.com/hyperium/hyper/blob/master/examples/http_proxy.rs

[whizsid]

@tomusdrw I took another approach. But I would like to accept your suggestions.

#[cfg(feature = "http-tls")]
#[derive(Debug, Clone)]
enum Client {
    Proxy(hyper::Client<hyper_proxy::ProxyConnector<hyper_tls::HttpsConnector<hyper::client::HttpConnector>>>),
    NoProxy(hyper::Client<hyper_tls::HttpsConnector<hyper::client::HttpConnector>>),
}

#[cfg(not(feature = "http-tls"))]
#[derive(Debug, Clone)]
enum Client {
    Proxy(hyper::Client<hyper_proxy::ProxyConnector<hyper::clinet::HttpConnector>>),
    NoProxy(hyper::Client<hyper::client::HttpConnector>),
}

impl Client {
    pub fn request(&self, req: hyper::Request<hyper::Body>) -> hyper::client::ResponseFuture {
        match self {
            Client::Proxy(client) => client.request(req),
            Client::NoProxy(client) => client.request(req),
        }
    }
}

May I continue with this approach? or with the above example?

[tomusdrw]

@whizsid Yup, looks good!