proxy settings are ignored

[hlein]

There as a previous issue and a commit to add proxy support, #18

I don't know if that worked then, but it doesn't seem to now.

Example that over-specifies every possible flavor of proxy-related env var just in case:

$ http_proxy=http://127.0.0.1:3128 https_proxy=http://127.0.0.1:3128 \
    HTTP_PROXY=http://127.0.0.1:3128 HTTPS_PROXY=http://127.0.0.1:3128 \
    strace rdap google.com 2>&1 | egrep '[^0-9a-f](443|3128)[^0-9a-f]'
getpeername(5, {sa_family=AF_INET, sin_port=htons(443), sin_addr=inet_addr("192.81.185.30")}, [112 => 16]) = 0

By contrast:

$ http_proxy=http://127.0.0.1:3128 https_proxy=http://127.0.0.1:3128 \
    HTTP_PROXY=http://127.0.0.1:3128 HTTPS_PROXY=http://127.0.0.1:3128 \
    strace curl https://google.com/ 2>&1 | egrep '[^0-9a-f](443|3128)[^0-9a-f]'
connect(4, {sa_family=AF_INET, sin_port=htons(3128), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
sendto(4, "CONNECT google.com:443 HTTP/1.1\r"..., 112, MSG_NOSIGNAL, NULL, 0) = 112