Ruby Net:HTTP chunked transfer

gistfile1.rb

require 'uri'
require 'net/http'

class Chunked
  def initialize(data, chunk_size)
    @size = chunk_size
    if data.respond_to? :read
      @file = data
    end
  end
  
  def read(foo)
    if @file
      @file.read(@size)
    end
  end
  def eof!
    @file.eof!
  end
  def eof?
    @file.eof?
  end
end

parsed = URI::parse(@storage_url)
conn = Net::HTTP.new(parsed.host, parsed.port)

fp = File::open('test.txt')
parsed.path += '/foo/test.txt'

chunked = Chunked.new(fp, 5)

request = Net::HTTP::Put.new parsed.request_uri, {'x-auth-token' => @auth_token, 'Transfer-Encoding' => 'chunked', 'content-type' => 'text/plain'}
request.body_stream = chunked
conn.start do |http| 
  http.request(request)
end

fp.close

Not work for me. Puma can not parse the request.

2014-04-22 16:53:00 +0800: HTTP parse error, malformed request (): #<Puma::HttpParserError: Invalid HTTP format, parsing fails.>
2014-04-22 16:53:00 +0800: ENV: {"rack.version"=>[1, 2], "rack.errors"=>#<IO:<STDERR>>, "rack.multithread"=>true, "rack.multiprocess"=>false, "rack.run_once"=>false, "SCRIPT_NAME"=>"", "CONTENT_TYPE"=>"text/plain", "QUERY_STRING"=>"", "SERVER_PROTOCOL"=>"HTTP/1.1", "SERVER_SOFTWARE"=>"2.8.1", "GATEWAY_INTERFACE"=>"CGI/1.2"}