I don't have an answer for you, but it seems that this has been asked before.
If you google for lwp proxy Unsupported Request Method and Protocol you will find all the previous discussions.
Maybe Perl https parser would help.
I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku ................... flash japh

In reply to Re: LWP patch (https through a proxy) by zentara
in thread LWP patch (https through a proxy) by danny0085

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