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Current File : //opt/alt/ruby21/lib64/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/handler/scgi.rb

require 'scgi'
require 'stringio'
require 'rack/content_length'
require 'rack/chunked'

module Rack
  module Handler
    class SCGI < ::SCGI::Processor
      attr_accessor :app

      def self.run(app, options=nil)
        options[:Socket] = UNIXServer.new(options[:File]) if options[:File]
        new(options.merge(:app=>app,
                          :host=>options[:Host],
                          :port=>options[:Port],
                          :socket=>options[:Socket])).listen
      end

      def self.valid_options
        environment  = ENV['RACK_ENV'] || 'development'
        default_host = environment == 'development' ? 'localhost' : '0.0.0.0'

        {
          "Host=HOST" => "Hostname to listen on (default: #{default_host})",
          "Port=PORT" => "Port to listen on (default: 8080)",
        }
      end

      def initialize(settings = {})
        @app = settings[:app]
        super(settings)
      end

      def process_request(request, input_body, socket)
        env = Hash[request]
        env.delete "HTTP_CONTENT_TYPE"
        env.delete "HTTP_CONTENT_LENGTH"
        env["REQUEST_PATH"], env[QUERY_STRING] = env["REQUEST_URI"].split('?', 2)
        env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
        env[PATH_INFO] = env["REQUEST_PATH"]
        env["QUERY_STRING"] ||= ""
        env["SCRIPT_NAME"] = ""

        rack_input = StringIO.new(input_body)
        rack_input.set_encoding(Encoding::BINARY) if rack_input.respond_to?(:set_encoding)

        env.update({"rack.version" => Rack::VERSION,
                     "rack.input" => rack_input,
                     "rack.errors" => $stderr,
                     "rack.multithread" => true,
                     "rack.multiprocess" => true,
                     "rack.run_once" => false,

                     "rack.url_scheme" => ["yes", "on", "1"].include?(env["HTTPS"]) ? "https" : "http"
                   })
        status, headers, body = app.call(env)
        begin
          socket.write("Status: #{status}\r\n")
          headers.each do |k, vs|
            vs.split("\n").each { |v| socket.write("#{k}: #{v}\r\n")}
          end
          socket.write("\r\n")
          body.each {|s| socket.write(s)}
        ensure
          body.close if body.respond_to? :close
        end
      end
    end
  end
end