no way how to use proxy with SDK v1

[lcmgh]

Describe the bug

I am opening this issue because I think it is quite crucial even there is a related issue #169 (that focused mostly and had solutions for SDK < v1) .

In corporate environments that require a proxy for internet access one cannot use the AWS SDK locally as such a configuration is not documented and it is unclear whether it is technically supported. For versions < 1 we had working solutions #169

Expected Behavior

• Technical feature that allows to configure proxies
• Doc that outlines how to configure such a http proxy

Current Behavior

• Unclear whether this is supported
• Unclear how proxy can be configured

Reproduction Steps

Possible Solution

No response

Additional Information/Context

No response

Version

v1

Environment details (OS name and version, etc.)

not relevant

Logs

No response

[lcmgh]

I stand corrected. Using hyper v0.14 with hyper-proxy works perfectly fine.

use hyper_proxy::{Intercept, Proxy, ProxyConnector};
use url::Url;
use headers::Authorization;
use hyper::Uri;
use hyper::client::HttpConnector;


/// Returns `ProxyConnector<HttpConnector>` if env. variable 'https_proxy' is set
pub fn determine_proxy() -> Option<ProxyConnector<HttpConnector>> {
    let proxy_url: Url = std::env::var("https_proxy").ok()?.parse().ok()?;
    let proxy_uri: Uri = std::env::var("https_proxy").ok()?.parse().ok()?;
    let mut proxy = Proxy::new(Intercept::All, proxy_uri);

    if let Some(password) = proxy_url.password() {
        proxy.set_authorization(Authorization::basic(proxy_url.username(), password));
    }

    let connector = HttpConnector::new();
    Some(ProxyConnector::from_proxy(connector, proxy).unwrap())
}

Cargo.toml

[dependencies]
hyper = { version = "0.14", features = ["client"] }
hyper-proxy = "0.9.1"
headers = "0.3.0"
url = "2.5.0"

// Usage

  let proxy = determine_proxy().unwrap();
  let client = aws_smithy_runtime::client::http::hyper_014::HyperClientBuilder::new().build(proxy);

  let aws_config = aws_config::load_from_env()
      .await
      .into_builder()
      .http_client(client.clone())
      .region(Region::new("eu-central-1"))
      .build();

  let sts = aws_sdk_sts::config::Builder::from(&aws_config)
      .build();

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