From: "Kristian Sørensen" <ks@...>
Date: 2003-11-17T10:24:38+09:00
Subject: Re: Access ftp-server through proxy



Clifford Heath wrote:
> Kristian S�rensen wrote:
> 
>> - Internet browsers is able to use e.g. regular squid proxy to make 
>> ftp connections. That was what I was after. It isn't too many places a 
>> socks server is available (not that I know of anyway ;)
> 
> 
> You make an HTTP proxy request, using an FTP URL.
> 
> An HTTP proxy request differs from a normal HTTP request
> in that the GET line contains "http://host.domain" at the
> start of the URL string. Just replace the http with ftp,
> add whatever username/password you need, and Squid will
> do the FTP for you. The request line looks like:
> 
> GET ftp://user:password@host.domain/pub/some_file HTTP/1.0
Okay, that's sounds easy, but I can't get it to work. Can you complete a 
ftp-download example?

I have tried with the following (including variants of it), but can't 
get it to work:
-----
#!/usr/bin/env ruby
require 'net/http'

Net::HTTP.start('ftp://anonymous:anonymous@ftp.sunsite.dk', 21) { |http|
   response, data = http.get('/pub/gnu/mc/mc-4.5.55.tar.gz', nil)

   File.open("mc.tgz", "wb") { |f|
	f.write(data)
   }
}
-----


I get the error trace:
-----
/pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:84:in `initialize': 
getaddrinfo: Name or service not known (SocketError)
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:84:in `new'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:84:in `connect'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:83:in `timeout'
    from /pack/ruby-1.8.0/lib/ruby/1.8/timeout.rb:55:in `timeout'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:83:in `connect'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/protocol.rb:65:in `initialize'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/http.rb:422:in `open'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/http.rb:422:in `do_start'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/http.rb:409:in `start'
    from /pack/ruby-1.8.0/lib/ruby/1.8/net/http.rb:324:in `start'
    from ./ftpget.rb:4
-----

/KS