in reply to LWP proxy setup difficulty

I think LWP needs the proxy in URL format, i.e. $proxy='http://72.43.50.184:80/';.

Also, remove the non-interpolating quotes around $proxy in $ua->proxy(['http'], '$proxy'); or you tell LWP to search for a server with a host name of $proxy.

Alexander

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Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)