From: Frederick Cheung <frederick.cheung@...>
Date: 2008-08-01T22:53:57+09:00
Subject: Re: My simple downloader doesn't work


On 1 Aug 2008, at 14:46, Gregory Brown wrote:

> On Thu, Jul 31, 2008 at 3:29 AM, WujcioL <WujcioL@gmail.com> wrote:
>> It still don't work:
>>
>>> require 'open-uri'
>>> puts open("anonymous:anonymous@sunsite.icm.edu.pl/pub/Linux/ 
>>> slackware/slackware-12.0/CHECKSUMS.md5.asc").read
>> Net:FTPPermError: 500 Illegal PORT Command
>>
>> I thinking about some bug in open-uri and net/ftp. Code is simple and
>> it runs so that's not mine error. Of course i succesfully downloaded
>> this file using Firefox3 and TotalCommander.
>> Code was tested on winXP and Kubuntu8.04.
>
> The code I showed worked on my machine.  Tested on OS X (10.4),
> without any firewall issues.
> Ruby version:
>
Beyond firewalls, active ftp won't work behind a NAT device.
Ftp servers sometimes say illegal port command if you tell them that  
your address is a private ip address like 192.168.x (your address on  
the network behind the nat device)

Fred
> seltzer:~ sandal$ ruby -v
> ruby 1.8.6 (2008-06-20 patchlevel 230) [i686-darwin8.11.1]
>
>
>
> -- 
> Killer Ruby PDF Generation named after a magnificent sea creature:
> http://github.com/sandal/prawn | Non-tech stuff at:
> http://metametta.blogspot.com
>