From: Brian Candler <b.candler@...>
Date: 2009-01-14T18:30:13+09:00
Subject: Re: Downloading an MP3 from the internet

Nathaniel Escribano wrote:
> require 'net/http'
> 
> Net::HTTP.start("cdn.stereogum.com") { |http|
>     resp = http.get("/mp3/My Morning Jacket - Celebration (Live).mp3")
>     open("Celebration.mp3", "wb") { |file|
>     file.write(resp.body)
>     }
> }
> puts "the song has been downloaded"

Here is an alternative way of doing it:

  require 'open-uri'
  open("http://cdn.stereogum.com/mp3/My Morning Jacket - Celebration 
(Live).mp3") do |src|
    open("Celebration.mp3","wb") do |dst|
      while blk = src.read(65536)
        dst.write(blk)
      end
    end
  end

This gives a clear error:

/usr/lib/ruby/1.8/uri/common.rb:436:in `split': bad URI(is not URI?): 
http://cdn.stereogum.com/mp3/My Morning Jacket - Celebration (Live).mp3 
(URI::InvalidURIError)

Fix the URI and it works:

  ...
  open("http://cdn.stereogum.com/mp3/My%20Morning%20Jacket%20-%20Celebration%20%28Live%29.mp3") 
do |src|
  ...
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