Created attachment 220909 [details]
Add support of HTTPS_PROXY/https_proxy environment variables. They works similar to FTP_PROXY/ftp_proxy environment variables for FTP scheme. That is, if scheme of request URL is "https" fetch(3) checks if following environment variables are set in this order.
And the value of first one set is used as setting of proxy for https.
I created the review of the patch.