Reading the LWP::UserAgent documentation, you will find that $ENV{HTTP_PROXY} is only evaluated if you call the $ua->env_proxy method. You can either modify your code or modify (say) LWP/UserAgent.pm so that the ->new constructor automatically calls env_proxy.

In reply to Re: Forcing LWP-UserAgent to use a proxy server without modifying code by Corion
in thread Forcing LWP-UserAgent to use a proxy server without modifying code by mvaline

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