Caddy version: v2.2.0 h1:sMUFqTbVIRlmA8NkFnNt9l7s0e+0gw+7GPIrhty905A=

I am trying to pass pem-encoded client certificate to proxied service via a X-SSL-Cert header, like so:

sub.example.com {
    reverse_proxy 127.0.0.1:8000 {
        header_up X-SSL-Cert {http.request.tls.client.certificate_pem}
    }

    tls {
        client_auth {
            mode require
        }
    }
}

If you're using proxies with requests-html and rendering JS sites is all good. Once you render a website pyppeteer don't know about this proxies and will expose your IP. This is an undesired behavior when scraping with proxies.

The idea is that whenever someone passes in proxies to the session object or any method call, make pyppeteer also use these proxies. #265

Hello!

I've noticed, that aiohttp is simply concatenating server-response (or client-request) header like this, w/o any validation:

    line = status_line + '\r\n' + ''.join(
        [k + ': ' + v + '\r\n' for k, v in headers.items()])

Which may be not okay, if some of the header values were based on user input.

Consider this example:

import aiohttp.web
asyn

Context

This isn't really a feature request, as what I need is possible with nock as-is. But I spent several hours searching, reading old issues and searching through the source code to find the solution, so I thought this might help others.

I am testing code that accesses a service that sets the statusMessage of the response, as well as the statusCode. I am using nock to mock the server

As we attempt to pick up the release cadence, we are in need of an explicit changelog file which enumerates changes in each version. This should be a markdown or plaintext file adhering to some form of standardized format. Ideally, it will be able to work with #582.

The example nginx configuration in the Deploying Falcon on Linux with NGINX and uWSGI article could probably be improved to include https configuration and redirect of http to https, since I believe it's the most common configuration now.

Maybe we could use a configuration from this great [Mozilla site](https://ssl-config