On Thu, 13 Sep 2018, Colin Ngam wrote:

> Yes, you are right. The curl command works but if I write a test program
> using libcurl, libcurl does not automatically look for the variable. See
> https://curl.haxx.se/libcurl/c/CURLOPT_PROXY.html

Those verbose lines my test shows comes from the library. So yes, it *does*
look for the variable. Can we perhaps change the game and you instead show us
your code for which it doesn't work?

See it working with libcurl:

$ cd docs/examples && make -sj
$ http_proxy=foo:9999 ./simple
curl_easy_perform() failed: Couldn't resolve proxy name
$ http_proxy=localhost:80 ./simple
[lots of HTML output]

(since I run a proxy on localhost port 80)

-- 
  / daniel.haxx.se
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