Class: Slowproxy::Server

Inherits:
WEBrick::HTTPProxyServer
  • Object
show all
Defined in:
lib/slowproxy/server.rb

Instance Method Summary collapse

Constructor Details

#initialize(config, default = WEBrick::Config::HTTP) ⇒ Server

Returns a new instance of Server.



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# File 'lib/slowproxy/server.rb', line 5

def initialize(config, default = WEBrick::Config::HTTP)
  @bps = config.delete(:BPS)
  SlowBufferedIO.bps = @bps if @bps
  super
  logger.info "#{number_to_human_size(@bps)}bps"
  SlowBufferedIO.logger = logger
end

Instance Method Details

#number_to_human_size(n) ⇒ Object 



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# File 'lib/slowproxy/server.rb', line 13

def number_to_human_size(n)
  suffixes = ["", "K", "M", "G"]
  suffixes.each_with_index.to_a.reverse.each do |suffix, index|
    one = 1024 ** index
    return "#{n / one} #{suffix}" if n >= one
  end
end

#perform_proxy_request(req, res) ⇒ Object 



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# File 'lib/slowproxy/server.rb', line 21

def perform_proxy_request(req, res)
  uri = req.request_uri
  path = uri.path.dup
  path << "?" << uri.query if uri.query
  header = setup_proxy_header(req, res)
  upstream = setup_upstream_proxy_authentication(req, res, header)
  response = nil

  http = Net::HTTP.new(uri.host, uri.port, upstream.host, upstream.port)
  http.start do
    ########## prepend Net::SlowBufferedIO
    http.instance_eval do
      class << @socket
        prepend Slowproxy::SlowBufferedIO
      end
    end
    ########## /prepend Net::SlowBufferedIO
    if @config[:ProxyTimeout]
      ##################################   these issues are
      http.open_timeout = 30   # secs  #   necessary (maybe because
      http.read_timeout = 60   # secs  #   Ruby's bug, but why?)
      ##################################
    end
    response = yield(http, path, header)
  end

  # Persistent connection requirements are mysterious for me.
  # So I will close the connection in every response.
  res['proxy-connection'] = "close"
  res['connection'] = "close"

  # Convert Net::HTTP::HTTPResponse to WEBrick::HTTPResponse
  res.status = response.code.to_i
  choose_header(response, res)
  set_cookie(response, res)
  set_via(res)
  res.body = response.body
end