From: Robert Klemme <shortcutter@...>
Date: 2007-10-09T02:40:02+09:00
Subject: Re: Can I do this perl code the same in ruby?

On 08.10.2007 18:29, kazaam wrote:
>> It seems you are trying to write a HTTP proxy.  If it is not for the 
>> educational experience then I suggest to look into the RAA or in the 
>> standard lib.  I believe a proxy class is part of Webrick.
> 
> Thanks for these hints!! I didn't new about RAA which seems like a really great collection. And you have also been right with webrick which makes it pretty easy to do an http-proxy:
> 
> #!/usr/bin/env ruby
> $Verbose=true

The variable is called $VERBOSE.

> require "webrick"
> require "webrick/httpproxy"
> 
> pch = Proc.new{|req, res|
>   p [ req.request_line, res.status_line ]
> }
> 
> def upstream_proxy
>   if prx = ENV["http_proxy"]
>     return URI.parse(prx)
>   end
>   return nil
> end

You can simplify that to

def upstream_proxy
   prx = ENV["http_proxy"] and URI.parse(prx)
end

> httpd = WEBrick::HTTPProxyServer.new(
>   :Port     => 10080,
>   :ProxyContentHandler => pch,
>   :ProxyURI => upstream_proxy
> )
> Signal.trap(:INT){ httpd.shutdown }
> httpd.start

:-)

Kind regards

	robert