问Ruby的open-uri open方法

EN

require "open-uri"

class TraceParser
  def starttorip
    url = 'http://yahoo.com'
    proxy_addr = 'http://my proxy server:'
    proxy_port = 1010
    begin
      open(url, :proxy => (proxy_addr + proxy_port.to_s)) do |source|
        source.each_line do |x|
          puts x
        end
      end
    end
  end
  varb = TraceParser.new
  varb.starttorip
end

require "open-uri"
class TraceParser
  def starttorip
    url = 'http://yahoo.com'
    begin
      open (url, :proxy => 'http://my proxy server:1010') do |source|
        source.each_line do |x|
          puts x
        end
      end
    end
  end
  varb = TraceParser.new
  varb.starttorip
end

/tracerparser.rb:6: syntax error, unexpected ',', expecting ')' (SyntaxError)
      open (url, :proxy => "my proxy server...