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?? auth
?? backports
?? body_proxy.rb(958 B)
?? builder.rb(4.27 KB)
?? cascade.rb(1.34 KB)
?? chunked.rb(1.58 KB)
?? commonlogger.rb(2.28 KB)
?? conditionalget.rb(2.5 KB)
?? config.rb(379 B)
?? content_length.rb(840 B)
?? content_type.rb(670 B)
?? deflater.rb(4.57 KB)
?? directory.rb(4.2 KB)
?? etag.rb(2.11 KB)
?? file.rb(4.09 KB)
?? handler
?? handler.rb(3.25 KB)
?? head.rb(484 B)
?? lint.rb(29.26 KB)
?? lobster.rb(1.97 KB)
?? lock.rb(601 B)
?? logger.rb(357 B)
?? methodoverride.rb(1.01 KB)
?? mime.rb(30.94 KB)
?? mock.rb(5.68 KB)
?? multipart
?? multipart.rb(1.14 KB)
?? nulllogger.rb(951 B)
?? recursive.rb(1.73 KB)
?? reloader.rb(2.97 KB)
?? request.rb(12.59 KB)
?? response.rb(4.33 KB)
?? rewindable_input.rb(3.19 KB)
?? runtime.rb(961 B)
?? sendfile.rb(5.18 KB)
?? server.rb(10.8 KB)
?? session
?? showexceptions.rb(11.7 KB)
?? showstatus.rb(3.46 KB)
?? static.rb(4.88 KB)
?? tempfile_reaper.rb(670 B)
?? urlmap.rb(2.46 KB)
?? utils
?? utils.rb(20.86 KB)

Editing: server.rb

require 'optparse'

module Rack

class Server

class Options
      def parse!(args)
        options = {}
        opt_parser = OptionParser.new("", 24, '  ') do |opts|
          opts.banner = "Usage: rackup [ruby options] [rack options] [rackup config]"

opts.separator ""
          opts.separator "Ruby options:"

lineno = 1
          opts.on("-e", "--eval LINE", "evaluate a LINE of code") { |line|
            eval line, TOPLEVEL_BINDING, "-e", lineno
            lineno += 1
          }

opts.on("-b", "--builder BUILDER_LINE", "evaluate a BUILDER_LINE of code as a builder script") { |line|
            options[:builder] = line
          }

opts.on("-d", "--debug", "set debugging flags (set $DEBUG to true)") {
            options[:debug] = true
          }
          opts.on("-w", "--warn", "turn warnings on for your script") {
            options[:warn] = true
          }
          opts.on("-q", "--quiet", "turn off logging") {
            options[:quiet] = true
          }

opts.on("-I", "--include PATH",
                  "specify $LOAD_PATH (may be used more than once)") { |path|
            (options[:include] ||= []).concat(path.split(":"))
          }

opts.on("-r", "--require LIBRARY",
                  "require the library, before executing your script") { |library|
            options[:require] = library
          }

opts.separator ""
          opts.separator "Rack options:"
          opts.on("-s", "--server SERVER", "serve using SERVER (thin/puma/webrick/mongrel)") { |s|
            options[:server] = s
          }

opts.on("-o", "--host HOST", "listen on HOST (default: localhost)") { |host|
            options[:Host] = host
          }

opts.on("-p", "--port PORT", "use PORT (default: 9292)") { |port|
            options[:Port] = port
          }

opts.on("-O", "--option NAME[=VALUE]", "pass VALUE to the server as option NAME. If no VALUE, sets it to true. Run '#{$0} -s SERVER -h' to get a list of options for SERVER") { |name|
            name, value = name.split('=', 2)
            value = true if value.nil?
            options[name.to_sym] = value
          }

opts.on("-E", "--env ENVIRONMENT", "use ENVIRONMENT for defaults (default: development)") { |e|
            options[:environment] = e
          }

opts.on("-D", "--daemonize", "run daemonized in the background") { |d|
            options[:daemonize] = d ? true : false
          }

opts.on("-P", "--pid FILE", "file to store PID") { |f|
            options[:pid] = ::File.expand_path(f)
          }

opts.separator ""
          opts.separator "Common options:"

opts.on_tail("-h", "-?", "--help", "Show this message") do
            puts opts
            puts handler_opts(options)

exit
          end

opts.on_tail("--version", "Show version") do
            puts "Rack #{Rack.version} (Release: #{Rack.release})"
            exit
          end
        end

begin
          opt_parser.parse! args
        rescue OptionParser::InvalidOption => e
          warn e.message
          abort opt_parser.to_s
        end

options[:config] = args.last if args.last
        options
      end

def handler_opts(options)
        begin
          info = []
          server = Rack::Handler.get(options[:server]) || Rack::Handler.default(options)
          if server && server.respond_to?(:valid_options)
            info << ""
            info << "Server-specific options for #{server.name}:"

has_options = false
            server.valid_options.each do |name, description|
              next if name.to_s.match(/^(Host|Port)[^a-zA-Z]/) # ignore handler's host and port options, we do our own.
              info << "  -O %-21s %s" % [name, description]
              has_options = true
            end
            return "" if !has_options
          end
          info.join("\n")
        rescue NameError
          return "Warning: Could not find handler specified (#{options[:server] || 'default'}) to determine handler-specific options"
        end
      end
    end

# Start a new rack server (like running rackup). This will parse ARGV and
    # provide standard ARGV rackup options, defaulting to load 'config.ru'.
    #
    # Providing an options hash will prevent ARGV parsing and will not include
    # any default options.
    #
    # This method can be used to very easily launch a CGI application, for
    # example:
    #
    #  Rack::Server.start(
    #    :app => lambda do |e|
    #      [200, {'Content-Type' => 'text/html'}, ['hello world']]
    #    end,
    #    :server => 'cgi'
    #  )
    #
    # Further options available here are documented on Rack::Server#initialize
    def self.start(options = nil)
      new(options).start
    end

attr_writer :options

# Options may include:
    # * :app
    #     a rack application to run (overrides :config)
    # * :config
    #     a rackup configuration file path to load (.ru)
    # * :environment
    #     this selects the middleware that will be wrapped around
    #     your application. Default options available are:
    #       - development: CommonLogger, ShowExceptions, and Lint
    #       - deployment: CommonLogger
    #       - none: no extra middleware
    #     note: when the server is a cgi server, CommonLogger is not included.
    # * :server
    #     choose a specific Rack::Handler, e.g. cgi, fcgi, webrick
    # * :daemonize
    #     if true, the server will daemonize itself (fork, detach, etc)
    # * :pid
    #     path to write a pid file after daemonize
    # * :Host
    #     the host address to bind to (used by supporting Rack::Handler)
    # * :Port
    #     the port to bind to (used by supporting Rack::Handler)
    # * :AccessLog
    #     webrick access log options (or supporting Rack::Handler)
    # * :debug
    #     turn on debug output ($DEBUG = true)
    # * :warn
    #     turn on warnings ($-w = true)
    # * :include
    #     add given paths to $LOAD_PATH
    # * :require
    #     require the given libraries
    def initialize(options = nil)
      @options = options
      @app = options[:app] if options && options[:app]
    end

def options
      @options ||= parse_options(ARGV)
    end

def default_options
      environment  = ENV['RACK_ENV'] || 'development'
      default_host = environment == 'development' ? 'localhost' : '0.0.0.0'

{
        :environment => environment,
        :pid         => nil,
        :Port        => 9292,
        :Host        => default_host,
        :AccessLog   => [],
        :config      => "config.ru"
      }
    end

def app
      @app ||= options[:builder] ? build_app_from_string : build_app_and_options_from_config
    end

class << self
      def logging_middleware
        lambda { |server|
          server.server.name =~ /CGI/ || server.options[:quiet] ? nil : [Rack::CommonLogger, $stderr]
        }
      end

def default_middleware_by_environment
        m = Hash.new {|h,k| h[k] = []}
        m["deployment"] = [
          [Rack::ContentLength],
          [Rack::Chunked],
          logging_middleware,
          [Rack::TempfileReaper]
        ]
        m["development"] = [
          [Rack::ContentLength],
          [Rack::Chunked],
          logging_middleware,
          [Rack::ShowExceptions],
          [Rack::Lint],
          [Rack::TempfileReaper]
        ]

m
      end

def middleware
        default_middleware_by_environment
      end
    end

def middleware
      self.class.middleware
    end

def start &blk
      if options[:warn]
        $-w = true
      end

if includes = options[:include]
        $LOAD_PATH.unshift(*includes)
      end

if library = options[:require]
        require library
      end

if options[:debug]
        $DEBUG = true
        require 'pp'
        p options[:server]
        pp wrapped_app
        pp app
      end

check_pid! if options[:pid]

# Touch the wrapped app, so that the config.ru is loaded before
      # daemonization (i.e. before chdir, etc).
      wrapped_app

daemonize_app if options[:daemonize]

write_pid if options[:pid]

trap(:INT) do
        if server.respond_to?(:shutdown)
          server.shutdown
        else
          exit
        end
      end

server.run wrapped_app, options, &blk
    end

def server
      @_server ||= Rack::Handler.get(options[:server]) || Rack::Handler.default(options)
    end

private
      def build_app_and_options_from_config
        if !::File.exist? options[:config]
          abort "configuration #{options[:config]} not found"
        end

app, options = Rack::Builder.parse_file(self.options[:config], opt_parser)
        self.options.merge! options
        app
      end

def build_app_from_string
        Rack::Builder.new_from_string(self.options[:builder])
      end

def parse_options(args)
        options = default_options

# Don't evaluate CGI ISINDEX parameters.
        # http://www.meb.uni-bonn.de/docs/cgi/cl.html
        args.clear if ENV.include?(REQUEST_METHOD)

options.merge! opt_parser.parse!(args)
        options[:config] = ::File.expand_path(options[:config])
        ENV["RACK_ENV"] = options[:environment]
        options
      end

def opt_parser
        Options.new
      end

def build_app(app)
        middleware[options[:environment]].reverse_each do |middleware|
          middleware = middleware.call(self) if middleware.respond_to?(:call)
          next unless middleware
          klass, *args = middleware
          app = klass.new(app, *args)
        end
        app
      end

def wrapped_app
        @wrapped_app ||= build_app app
      end

def daemonize_app
        if RUBY_VERSION < "1.9"
          exit if fork
          Process.setsid
          exit if fork
          Dir.chdir "/"
          STDIN.reopen "/dev/null"
          STDOUT.reopen "/dev/null", "a"
          STDERR.reopen "/dev/null", "a"
        else
          Process.daemon
        end
      end

def write_pid
        ::File.open(options[:pid], ::File::CREAT | ::File::EXCL | ::File::WRONLY ){ |f| f.write("#{Process.pid}") }
        at_exit { ::File.delete(options[:pid]) if ::File.exist?(options[:pid]) }
      rescue Errno::EEXIST
        check_pid!
        retry
      end

def check_pid!
        case pidfile_process_status
        when :running, :not_owned
          $stderr.puts "A server is already running. Check #{options[:pid]}."
          exit(1)
        when :dead
          ::File.delete(options[:pid])
        end
      end

def pidfile_process_status
        return :exited unless ::File.exist?(options[:pid])

pid = ::File.read(options[:pid]).to_i
        return :dead if pid == 0

Process.kill(0, pid)
        :running
      rescue Errno::ESRCH
        :dead
      rescue Errno::EPERM
        :not_owned
      end

end

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Editing: server.rb

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