A quick check of the docs makes me believe that HTTP::Headers (which is the type of object HTTP::Proxy is using together with the response) simply doesn't allow to init headers en bloc from a file.  So, I'm afraid you'll have to split them up and set them on a field by field basis...

In reply to Re: Help building response headers for HTTP proxy request by almut
in thread Help building response headers for HTTP proxy request by r1n0

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