Merge branch 'rack'

7 files changed, 68 insertions, 797 deletions

diff --git a/lib/mongrel.rb b/lib/mongrel.rb
index f09a617..e0c2b01 100644
--- a/lib/mongrel.rb
+++ b/lib/mongrel.rb
@@ -17,14 +17,13 @@ require 'mongrel/gems'
 Mongrel::Gems.require 'cgi_multipart_eof_fix'
 Mongrel::Gems.require 'fastthread'
 require 'thread'
+require 'rack'
 
 # Ruby Mongrel
 require 'mongrel/cgi'
 require 'mongrel/handlers'
 require 'mongrel/command'
 require 'mongrel/tcphack'
-require 'mongrel/configurator'
-require 'mongrel/uri_classifier'
 require 'mongrel/const'
 require 'mongrel/http_request'
 require 'mongrel/header_out'
@@ -88,21 +87,20 @@ module Mongrel
     # The throttle parameter is a sleep timeout (in hundredths of a second) that is placed between 
     # socket.accept calls in order to give the server a cheap throttle time.  It defaults to 0 and
     # actually if it is 0 then the sleep is not done at all.
-    def initialize(host, port, num_processors=950, throttle=0, timeout=60)
-      
+    def initialize(host, port, app, opts = {})
       tries = 0
       @socket = TCPServer.new(host, port) 
       if defined?(Fcntl::FD_CLOEXEC)
         @socket.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
       end
-      
-      @classifier = URIClassifier.new
       @host = host
       @port = port
       @workers = ThreadGroup.new
-      @throttle = throttle / 100.0
-      @num_processors = num_processors
-      @timeout = timeout
+      # Set default opts
+      @app = app
+      @num_processors = opts.delete(:num_processors) || 950
+      @throttle       = (opts.delete(:throttle) || 0) / 100
+      @timeout        = opts.delete(:timeout) || 60
     end
 
     # Does the majority of the IO processing.  It has been written in Ruby using
@@ -134,46 +132,25 @@ module Mongrel
 
             raise "No REQUEST PATH" if not params[Const::REQUEST_PATH]
 
-            script_name, path_info, handlers = @classifier.resolve(params[Const::REQUEST_PATH])
-
-            if handlers
-              params[Const::PATH_INFO] = path_info
-              params[Const::SCRIPT_NAME] = script_name
-
-              # From http://www.ietf.org/rfc/rfc3875 :
-              # "Script authors should be aware that the REMOTE_ADDR and REMOTE_HOST
-              #  meta-variables (see sections 4.1.8 and 4.1.9) may not identify the
-              #  ultimate source of the request.  They identify the client for the
-              #  immediate request to the server; that client may be a proxy, gateway,
-              #  or other intermediary acting on behalf of the actual source client."
-              params[Const::REMOTE_ADDR] = client.peeraddr.last
-
-              # select handlers that want more detailed request notification
-              notifiers = handlers.select { |h| h.request_notify }
-              request = HttpRequest.new(params, client, notifiers)
-
-              # in the case of large file uploads the user could close the socket, so skip those requests
-              break if request.body == nil  # nil signals from HttpRequest::initialize that the request was aborted
-
-              # request is good so far, continue processing the response
-              response = HttpResponse.new(client)
-
-              # Process each handler in registered order until we run out or one finalizes the response.
-              handlers.each do |handler|
-                handler.process(request, response)
-                break if response.done or client.closed?
-              end
-
-              # And finally, if nobody closed the response off, we finalize it.
-              unless response.done or client.closed? 
-                response.finished
-              end
-            else
-              # Didn't find it, return a stock 404 response.
-              client.write(Const::ERROR_404_RESPONSE)
-            end
-
-            break #done
+            params[Const::PATH_INFO] = params[Const::REQUEST_PATH]
+            params[Const::SCRIPT_NAME] = Const::SLASH
+
+            # From http://www.ietf.org/rfc/rfc3875 :
+            # "Script authors should be aware that the REMOTE_ADDR and REMOTE_HOST
+            #  meta-variables (see sections 4.1.8 and 4.1.9) may not identify the
+            #  ultimate source of the request.  They identify the client for the
+            #  immediate request to the server; that client may be a proxy, gateway,
+            #  or other intermediary acting on behalf of the actual source client."
+            params[Const::REMOTE_ADDR] = client.peeraddr.last
+
+            # select handlers that want more detailed request notification
+            request = HttpRequest.new(params, client)
+
+            # in the case of large file uploads the user could close the socket, so skip those requests
+            break if request.body == nil  # nil signals from HttpRequest::initialize that the request was aborted
+            app_response = @app.call(request.env)
+            response = HttpResponse.new(client, app_response).start
+          break #done
           else
             # Parser is not done, queue up more data to read and continue parsing
             chunk = client.readpartial(Const::CHUNK_SIZE)
@@ -260,7 +237,7 @@ module Mongrel
     
     # Runs the thing.  It returns the thread used so you can "join" it.  You can also
     # access the HttpServer::acceptor attribute to get the thread later.
-    def run
+    def start!
       BasicSocket.do_not_reverse_lookup=true
 
       configure_socket_options
@@ -280,7 +257,6 @@ module Mongrel
               end
   
               worker_list = @workers.list
-  
               if worker_list.length >= @num_processors
                 STDERR.puts "Server overloaded with #{worker_list.length} processors (#@num_processors max). Dropping connection."
                 client.close rescue nil
diff --git a/lib/mongrel/configurator.rb b/lib/mongrel/configurator.rb
deleted file mode 100644
index 439b44c..0000000
--- a/lib/mongrel/configurator.rb
+++ /dev/null
@@ -1,388 +0,0 @@
-require 'yaml'
-require 'etc'
-
-module Mongrel
-  # Implements a simple DSL for configuring a Mongrel server for your 
-  # purposes.  More used by framework implementers to setup Mongrel
-  # how they like, but could be used by regular folks to add more things
-  # to an existing mongrel configuration.
-  #
-  # It is used like this:
-  #
-  #   require 'mongrel'
-  #   config = Mongrel::Configurator.new :host => "127.0.0.1" do
-  #     listener :port => 3000 do
-  #       uri "/app", :handler => Mongrel::DirHandler.new(".", load_mime_map("mime.yaml"))
-  #     end
-  #     run
-  #   end
-  # 
-  # This will setup a simple DirHandler at the current directory and load additional
-  # mime types from mimy.yaml.  The :host => "127.0.0.1" is actually not 
-  # specific to the servers but just a hash of default parameters that all 
-  # server or uri calls receive.
-  #
-  # When you are inside the block after Mongrel::Configurator.new you can simply
-  # call functions that are part of Configurator (like server, uri, daemonize, etc)
-  # without having to refer to anything else.  You can also call these functions on 
-  # the resulting object directly for additional configuration.
-  #
-  # A major thing about Configurator is that it actually lets you configure 
-  # multiple listeners for any hosts and ports you want.  These are kept in a
-  # map config.listeners so you can get to them.
-  #
-  # * :pid_file => Where to write the process ID.
-  class Configurator
-    attr_reader :listeners
-    attr_reader :defaults
-    attr_reader :needs_restart
-
-    # You pass in initial defaults and then a block to continue configuring.
-    def initialize(defaults={}, &block)
-      @listener = nil
-      @listener_name = nil
-      @listeners = {}
-      @defaults = defaults
-      @needs_restart = false
-      @pid_file = defaults[:pid_file]
-
-      if block
-        cloaker(&block).bind(self).call
-      end
-    end
-
-    # Change privileges of the process to specified user and group.
-    def change_privilege(user, group)
-      begin
-        uid, gid = Process.euid, Process.egid
-        target_uid = Etc.getpwnam(user).uid if user
-        target_gid = Etc.getgrnam(group).gid if group
-
-        if uid != target_uid or gid != target_gid
-          log "Initiating groups for #{user.inspect}:#{group.inspect}."
-          Process.initgroups(user, target_gid)
-        
-          log "Changing group to #{group.inspect}."
-          Process::GID.change_privilege(target_gid)
-
-          log "Changing user to #{user.inspect}." 
-          Process::UID.change_privilege(target_uid)
-        end
-      rescue Errno::EPERM => e
-        log "Couldn't change user and group to #{user.inspect}:#{group.inspect}: #{e.to_s}."
-        log "Mongrel failed to start."
-        exit 1
-      end
-    end
-
-    def remove_pid_file
-      File.unlink(@pid_file) if @pid_file and File.exists?(@pid_file)
-    end
-
-    # Writes the PID file if we're not on Windows.
-    def write_pid_file
-      if RUBY_PLATFORM !~ /djgpp|(cyg|ms|bcc)win|mingw/
-        log "Writing PID file to #{@pid_file}"
-        open(@pid_file,"w") {|f| f.write(Process.pid) }
-        open(@pid_file,"w") do |f|
-          f.write(Process.pid)
-          File.chmod(0644, @pid_file)
-        end      
-      end
-    end
-
-    # Generates a class for cloaking the current self and making the DSL nicer.
-    def cloaking_class
-      class << self
-        self
-      end
-    end
-
-    # Do not call this.  You were warned.
-    def cloaker(&block)
-      cloaking_class.class_eval do
-        define_method :cloaker_, &block
-        meth = instance_method( :cloaker_ )
-        remove_method :cloaker_
-        meth
-      end
-    end
-
-    # This will resolve the given options against the defaults.
-    # Normally just used internally.
-    def resolve_defaults(options)
-      options.merge(@defaults)
-    end
-
-    # Starts a listener block.  This is the only one that actually takes
-    # a block and then you make Configurator.uri calls in order to setup
-    # your URIs and handlers.  If you write your Handlers as GemPlugins
-    # then you can use load_plugins and plugin to load them.
-    # 
-    # It expects the following options (or defaults):
-    # 
-    # * :host => Host name to bind.
-    # * :port => Port to bind.
-    # * :num_processors => The maximum number of concurrent threads allowed.
-    # * :throttle => Time to pause (in hundredths of a second) between accepting clients. 
-    # * :timeout => Time to wait (in seconds) before killing a stalled thread.
-    # * :user => User to change to, must have :group as well.
-    # * :group => Group to change to, must have :user as well.
-    #
-    def listener(options={},&block)
-      raise "Cannot call listener inside another listener block." if (@listener or @listener_name)
-      ops = resolve_defaults(options)
-      ops[:num_processors] ||= 950
-      ops[:throttle] ||= 0
-      ops[:timeout] ||= 60
-
-      @listener = Mongrel::HttpServer.new(ops[:host], ops[:port].to_i, ops[:num_processors].to_i, ops[:throttle].to_i, ops[:timeout].to_i)
-      @listener_name = "#{ops[:host]}:#{ops[:port]}"
-      @listeners[@listener_name] = @listener
-
-      if ops[:user] and ops[:group]
-        change_privilege(ops[:user], ops[:group])
-      end
-
-      # Does the actual cloaking operation to give the new implicit self.
-      if block
-        cloaker(&block).bind(self).call
-      end
-
-      # all done processing this listener setup, reset implicit variables
-      @listener = nil
-      @listener_name = nil
-    end
-
-
-    # Called inside a Configurator.listener block in order to 
-    # add URI->handler mappings for that listener.  Use this as
-    # many times as you like.  It expects the following options
-    # or defaults:
-    #
-    # * :handler => HttpHandler -- Handler to use for this location.
-    # * :in_front => true/false -- Rather than appending, it prepends this handler.
-    def uri(location, options={})
-      ops = resolve_defaults(options)
-      @listener.register(location, ops[:handler], ops[:in_front])
-    end
-
-
-    # Daemonizes the current Ruby script turning all the
-    # listeners into an actual "server" or detached process.
-    # You must call this *before* frameworks that open files
-    # as otherwise the files will be closed by this function.
-    #
-    # Does not work for Win32 systems (the call is silently ignored).
-    #
-    # Requires the following options or defaults:
-    #
-    # * :cwd => Directory to change to.
-    # * :log_file => Where to write STDOUT and STDERR.
-    # 
-    # It is safe to call this on win32 as it will only require the daemons
-    # gem/library if NOT win32.
-    def daemonize(options={})
-      ops = resolve_defaults(options)
-      # save this for later since daemonize will hose it
-      if RUBY_PLATFORM !~ /djgpp|(cyg|ms|bcc)win|mingw/
-        require 'daemons/daemonize'
-
-        logfile = ops[:log_file]
-        if logfile[0].chr != "/"
-          logfile = File.join(ops[:cwd],logfile)
-          if not File.exist?(File.dirname(logfile))
-            log "!!! Log file directory not found at full path #{File.dirname(logfile)}.  Update your configuration to use a full path."
-            exit 1
-          end
-        end
-
-        Daemonize.daemonize(logfile)
-
-        # change back to the original starting directory
-        Dir.chdir(ops[:cwd])
-
-      else
-        log "WARNING: Win32 does not support daemon mode."
-      end
-    end
-
-
-    # Uses the GemPlugin system to easily load plugins based on their
-    # gem dependencies.  You pass in either an :includes => [] or 
-    # :excludes => [] setting listing the names of plugins to include
-    # or exclude from the determining the dependencies.
-    def load_plugins(options={})
-      ops = resolve_defaults(options)
-
-      load_settings = {}
-      if ops[:includes]
-        ops[:includes].each do |plugin|
-          load_settings[plugin] = GemPlugin::INCLUDE
-        end
-      end
-
-      if ops[:excludes]
-        ops[:excludes].each do |plugin|
-          load_settings[plugin] = GemPlugin::EXCLUDE
-        end
-      end
-
-      GemPlugin::Manager.instance.load(load_settings)
-    end
-
-
-    # Easy way to load a YAML file and apply default settings.
-    def load_yaml(file, default={})
-      default.merge(YAML.load_file(file))
-    end
-
-
-    # Loads the MIME map file and checks that it is correct
-    # on loading.  This is commonly passed to Mongrel::DirHandler
-    # or any framework handler that uses DirHandler to serve files.
-    # You can also include a set of default MIME types as additional
-    # settings.  See Mongrel::DirHandler for how the MIME types map
-    # is organized.
-    def load_mime_map(file, mime={})
-      # configure any requested mime map
-      mime = load_yaml(file, mime)
-
-      # check all the mime types to make sure they are the right format
-      mime.each {|k,v| log "WARNING: MIME type #{k} must start with '.'" if k.index(".") != 0 }
-
-      return mime
-    end
-
-
-    # Loads and creates a plugin for you based on the given
-    # name and configured with the selected options.  The options
-    # are merged with the defaults prior to passing them in.
-    def plugin(name, options={})
-      ops = resolve_defaults(options)
-      GemPlugin::Manager.instance.create(name, ops)
-    end
-
-    # Lets you do redirects easily as described in Mongrel::RedirectHandler.
-    # You use it inside the configurator like this:
-    #
-    #   redirect("/test", "/to/there") # simple
-    #   redirect("/to", /t/, 'w') # regexp
-    #   redirect("/hey", /(w+)/) {|match| ...}  # block
-    #
-    def redirect(from, pattern, replacement = nil, &block)
-      uri from, :handler => Mongrel::RedirectHandler.new(pattern, replacement, &block)
-    end
-
-    # Works like a meta run method which goes through all the 
-    # configured listeners.  Use the Configurator.join method
-    # to prevent Ruby from exiting until each one is done.
-    def run
-      @listeners.each {|name,s| 
-        s.run 
-      }
-
-      $mongrel_sleeper_thread = Thread.new { loop { sleep 1 } }
-    end
-
-    # Calls .stop on all the configured listeners so they
-    # stop processing requests (gracefully).  By default it
-    # assumes that you don't want to restart.
-    def stop(needs_restart=false, synchronous=false)   
-      @listeners.each do |name,s| 
-        s.stop(synchronous)      
-      end      
-      @needs_restart = needs_restart
-    end
-
-
-    # This method should actually be called *outside* of the
-    # Configurator block so that you can control it.  In other words
-    # do it like:  config.join.
-    def join
-      @listeners.values.each {|s| s.acceptor.join }
-    end
-
-
-    # Calling this before you register your URIs to the given location
-    # will setup a set of handlers that log open files, objects, and the
-    # parameters for each request.  This helps you track common problems
-    # found in Rails applications that are either slow or become unresponsive
-    # after a little while.
-    #
-    # You can pass an extra parameter *what* to indicate what you want to 
-    # debug.  For example, if you just want to dump rails stuff then do:
-    #
-    #   debug "/", what = [:rails]
-    # 
-    # And it will only produce the log/mongrel_debug/rails.log file.
-    # Available options are: :access, :files, :objects, :threads, :rails 
-    # 
-    # NOTE: Use [:files] to get accesses dumped to stderr like with WEBrick.
-    def debug(location, what = [:access, :files, :objects, :threads, :rails])
-      require 'mongrel/debug'
-      handlers = {
-        :access => "/handlers/requestlog::access", 
-        :files => "/handlers/requestlog::files", 
-        :objects => "/handlers/requestlog::objects", 
-        :threads => "/handlers/requestlog::threads",
-        :rails => "/handlers/requestlog::params"
-      }
-
-      # turn on the debugging infrastructure, and ObjectTracker is a pig
-      MongrelDbg.configure
-
-      # now we roll through each requested debug type, turn it on and load that plugin
-      what.each do |type| 
-        MongrelDbg.begin_trace type 
-        uri location, :handler => plugin(handlers[type])
-      end
-    end
-
-    # Used to allow you to let users specify their own configurations
-    # inside your Configurator setup.  You pass it a script name and
-    # it reads it in and does an eval on the contents passing in the right
-    # binding so they can put their own Configurator statements.
-    def run_config(script)
-      open(script) {|f| eval(f.read, proc {self}) }
-    end
-
-    # Sets up the standard signal handlers that are used on most Ruby
-    # It only configures if the platform is not win32 and doesn't do
-    # a HUP signal since this is typically framework specific.
-    #
-    # Requires a :pid_file option given to Configurator.new to indicate a file to delete.  
-    # It sets the MongrelConfig.needs_restart attribute if 
-    # the start command should reload.  It's up to you to detect this
-    # and do whatever is needed for a "restart".
-    #
-    # This command is safely ignored if the platform is win32 (with a warning)
-    def setup_signals(options={})
-      ops = resolve_defaults(options)
-
-      # forced shutdown, even if previously restarted (actually just like TERM but for CTRL-C)
-      trap("INT") { log "INT signal received."; stop(false) }
-
-      # clean up the pid file always
-      at_exit { remove_pid_file }
-
-      if RUBY_PLATFORM !~ /djgpp|(cyg|ms|bcc)win|mingw/
-        # graceful shutdown
-        trap("TERM") { log "TERM signal received."; stop }
-        trap("USR1") { log "USR1 received, toggling $mongrel_debug_client to #{!$mongrel_debug_client}"; $mongrel_debug_client = !$mongrel_debug_client }
-        # restart
-        trap("USR2") { log "USR2 signal received."; stop(true) }
-
-        log "Signals ready.  TERM => stop.  USR2 => restart.  INT => stop (no restart)."
-      else
-        log "Signals ready.  INT => stop (no restart)."
-      end
-    end
-
-    # Logs a simple message to STDERR (or the mongrel log if in daemon mode).
-    def log(msg)
-      STDERR.print "** ", msg, "\n"
-    end
-
-  end
-end
diff --git a/lib/mongrel/handlers.rb b/lib/mongrel/handlers.rb
index e643025..ce24628 100644
--- a/lib/mongrel/handlers.rb
+++ b/lib/mongrel/handlers.rb
@@ -88,198 +88,6 @@ module Mongrel
 
   end
 
-  #
-  # Serves the contents of a directory.  You give it the path to the root
-  # where the files are located, and it tries to find the files based on 
-  # the PATH_INFO inside the directory.  If the requested path is a
-  # directory then it returns a simple directory listing.
-  #
-  # It does a simple protection against going outside it's root path by
-  # converting all paths to an absolute expanded path, and then making 
-  # sure that the final expanded path includes the root path.  If it doesn't
-  # than it simply gives a 404.
-  #
-  # If you pass nil as the root path, it will not check any locations or
-  # expand any paths. This lets you serve files from multiple drives
-  # on win32. It should probably not be used in a public-facing way
-  # without additional checks.
-  #
-  # The default content type is "text/plain; charset=ISO-8859-1" but you
-  # can change it anything you want using the DirHandler.default_content_type
-  # attribute.
-  #
-  class DirHandler < HttpHandler
-    attr_accessor :default_content_type
-    attr_reader :path
-
-    MIME_TYPES_FILE = "mime_types.yml"
-    MIME_TYPES = YAML.load_file(File.join(File.dirname(__FILE__), MIME_TYPES_FILE))
-
-    ONLY_HEAD_GET="Only HEAD and GET allowed.".freeze
-
-    # You give it the path to the directory root and and optional listing_allowed and index_html
-    def initialize(path, listing_allowed=true, index_html="index.html")
-      @path = File.expand_path(path) if path
-      @listing_allowed = listing_allowed
-      @index_html = index_html
-      @default_content_type = "application/octet-stream".freeze
-    end
-
-    # Checks if the given path can be served and returns the full path (or nil if not).
-    def can_serve(path_info)
-
-      req_path = HttpRequest.unescape(path_info)
-      # Add the drive letter or root path
-      req_path = File.join(@path, req_path) if @path
-      req_path = File.expand_path req_path
-      
-      if File.exist? req_path and (!@path or req_path.index(@path) == 0)
-        # It exists and it's in the right location
-        if File.directory? req_path
-          # The request is for a directory
-          index = File.join(req_path, @index_html)
-          if File.exist? index
-            # Serve the index
-            return index
-          elsif @listing_allowed
-            # Serve the directory
-            return req_path
-          else
-            # Do not serve anything
-            return nil
-          end
-        else
-          # It's a file and it's there
-          return req_path
-        end
-      else
-        # does not exist or isn't in the right spot
-        return nil
-      end
-    end
-
-
-    # Returns a simplistic directory listing if they're enabled, otherwise a 403.
-    # Base is the base URI from the REQUEST_URI, dir is the directory to serve 
-    # on the file system (comes from can_serve()), and response is the HttpResponse
-    # object to send the results on.
-    def send_dir_listing(base, dir, response)
-      # take off any trailing / so the links come out right
-      base = HttpRequest.unescape(base)
-      base.chop! if base[-1] == "/"[-1]
-
-      if @listing_allowed
-        response.start(200) do |head,out|
-          head[Const::CONTENT_TYPE] = "text/html"
-          out << "<html><head><title>Directory Listing</title></head><body>"
-          Dir.entries(dir).each do |child|
-            next if child == "."
-            out << "<a href=\"#{base}/#{ HttpRequest.escape(child)}\">"
-            out << (child == ".." ? "Up to parent.." : child)
-            out << "</a><br/>"
-          end
-          out << "</body></html>"
-        end
-      else
-        response.start(403) do |head,out|
-          out.write("Directory listings not allowed")
-        end
-      end
-    end
-
-
-    # Sends the contents of a file back to the user. Not terribly efficient since it's
-    # opening and closing the file for each read.
-    def send_file(req_path, request, response, header_only=false)
-
-      stat = File.stat(req_path)
-
-      # Set the last modified times as well and etag for all files
-      mtime = stat.mtime
-      # Calculated the same as apache, not sure how well the works on win32
-      etag = Const::ETAG_FORMAT % [mtime.to_i, stat.size, stat.ino]
-
-      modified_since = request.params[Const::HTTP_IF_MODIFIED_SINCE]
-      none_match = request.params[Const::HTTP_IF_NONE_MATCH]
-
-      # test to see if this is a conditional request, and test if
-      # the response would be identical to the last response
-      same_response = case
-                      when modified_since && !last_response_time = Time.httpdate(modified_since) rescue nil : false
-                      when modified_since && last_response_time > Time.now                                  : false
-                      when modified_since && mtime > last_response_time                                     : false
-                      when none_match     && none_match == '*'                                              : false
-                      when none_match     && !none_match.strip.split(/\s*,\s*/).include?(etag)              : false
-                      else modified_since || none_match  # validation successful if we get this far and at least one of the header exists
-                      end
-
-      header = response.header
-      header[Const::ETAG] = etag
-
-      if same_response
-        response.start(304) {}
-      else
-        
-        # First we setup the headers and status then we do a very fast send on the socket directly
-        
-        # Support custom responses except 404, which is the default. A little awkward. 
-        response.status = 200 if response.status == 404        
-        header[Const::LAST_MODIFIED] = mtime.httpdate
-
-        # Set the mime type from our map based on the ending
-        dot_at = req_path.rindex('.')
-        if dot_at
-          header[Const::CONTENT_TYPE] = MIME_TYPES[req_path[dot_at .. -1]] || @default_content_type
-        else
-          header[Const::CONTENT_TYPE] = @default_content_type
-        end
-
-        # send a status with out content length
-        response.send_status(stat.size)
-        response.send_header
-
-        if not header_only
-          response.send_file(req_path, stat.size < Const::CHUNK_SIZE * 2)
-        end
-      end
-    end
-
-    # Process the request to either serve a file or a directory listing
-    # if allowed (based on the listing_allowed parameter to the constructor).
-    def process(request, response)
-      req_method = request.params[Const::REQUEST_METHOD] || Const::GET
-      req_path = can_serve request.params[Const::PATH_INFO]
-      if not req_path
-        # not found, return a 404
-        response.start(404) do |head,out|
-          out << "File not found"
-        end
-      else
-        begin
-          if File.directory? req_path
-            send_dir_listing(request.params[Const::REQUEST_URI], req_path, response)
-          elsif req_method == Const::HEAD
-            send_file(req_path, request, response, true)
-          elsif req_method == Const::GET
-            send_file(req_path, request, response, false)
-          else
-            response.start(403) {|head,out| out.write(ONLY_HEAD_GET) }
-          end
-        rescue => details
-          STDERR.puts "Error sending file #{req_path}: #{details}"
-        end
-      end
-    end
-
-    # There is a small number of default mime types for extensions, but
-    # this lets you add any others you'll need when serving content.
-    def DirHandler::add_mime_type(extension, type)
-      MIME_TYPES[extension] = type
-    end
-
-  end
-
-
   # When added to a config script (-S in mongrel_rails) it will
   # look at the client's allowed response types and then gzip 
   # compress anything that is going out.
@@ -421,48 +229,4 @@ module Mongrel
       end
     end
   end
-
-  # This handler allows you to redirect one url to another.
-  # You can use it like String#gsub, where the string is the REQUEST_URI.
-  # REQUEST_URI is the full path with GET parameters.
-  #
-  # Eg. /test/something?help=true&disclaimer=false
-  #
-  # == Examples
-  #
-  #   h = Mongrel::HttpServer.new('0.0.0.0')
-  #   h.register '/test', Mongrel::RedirectHandler.new('/to/there') # simple
-  #   h.register '/to',   Mongrel::RedirectHandler.new(/t/, 'w') # regexp
-  #   # and with a block
-  #   h.register '/hey',  Mongrel::RedirectHandler.new(/(\w+)/) { |match| ... }
-  # 
-  class RedirectHandler < Mongrel::HttpHandler
-    # You set the rewrite rules when building the object.
-    #
-    # pattern            => What to look for or replacement if used alone
-    #
-    # replacement, block => One of them is used to replace the found text
-
-    def initialize(pattern, replacement = nil, &block)
-      unless replacement or block
-        @pattern, @replacement = nil, pattern
-      else
-        @pattern, @replacement, @block = pattern, replacement, block
-      end
-    end
-
-    # Process the request and return a redirect response
-    def process(request, response)
-      unless @pattern
-        response.socket.write(Mongrel::Const::REDIRECT % @replacement)
-      else
-        if @block
-          new_path = request.params['REQUEST_URI'].gsub(@pattern, &@block)
-        else
-          new_path = request.params['REQUEST_URI'].gsub(@pattern, @replacement)
-        end
-        response.socket.write(Mongrel::Const::REDIRECT % new_path)
-      end
-    end
-  end
 end
diff --git a/lib/mongrel/header_out.rb b/lib/mongrel/header_out.rb
index b34e95e..008bff8 100644
--- a/lib/mongrel/header_out.rb
+++ b/lib/mongrel/header_out.rb
@@ -10,13 +10,19 @@ module Mongrel
     attr_reader :out
     attr_accessor :allowed_duplicates
 
-    def initialize(out)
+    def initialize(out = StringIO.new)
       @sent = {}
       @allowed_duplicates = {"Set-Cookie" => true, "Set-Cookie2" => true,
         "Warning" => true, "WWW-Authenticate" => true}
       @out = out
     end
 
+    def merge!(hash)
+      hash.each do |key, value|
+        self[key] = value
+      end
+    end
+
     # Simply writes "#{key}: #{value}" to an output buffer.
     def[]=(key,value)
       if not @sent.has_key?(key) or @allowed_duplicates.has_key?(key)
@@ -25,4 +31,4 @@ module Mongrel
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/mongrel/http_request.rb b/lib/mongrel/http_request.rb
index c8d4ce4..2416b04 100644
--- a/lib/mongrel/http_request.rb
+++ b/lib/mongrel/http_request.rb
@@ -1,45 +1,27 @@
 
 module Mongrel
   #
-  # When a handler is found for a registered URI then this class is constructed
-  # and passed to your HttpHandler::process method.  You should assume that 
-  # *one* handler processes all requests.  Included in the HttpRequest is a
-  # HttpRequest.params Hash that matches common CGI params, and a HttpRequest.body
-  # which is a string containing the request body (raw for now).
-  #
   # The HttpRequest.initialize method will convert any request that is larger than
   # Const::MAX_BODY into a Tempfile and use that as the body.  Otherwise it uses 
   # a StringIO object.  To be safe, you should assume it works like a file.
-  #
-  # The HttpHandler.request_notify system is implemented by having HttpRequest call
-  # HttpHandler.request_begins, HttpHandler.request_progress, HttpHandler.process during
-  # the IO processing.  This adds a small amount of overhead but lets you implement
-  # finer controlled handlers and filters.
-  #
+  # 
   class HttpRequest
     attr_reader :body, :params
 
     # You don't really call this.  It's made for you.
     # Main thing it does is hook up the params, and store any remaining
     # body data into the HttpRequest.body attribute.
-    def initialize(params, socket, dispatchers)
+    def initialize(params, socket)
       @params = params
       @socket = socket
-      @dispatchers = dispatchers
       content_length = @params[Const::CONTENT_LENGTH].to_i
       remain = content_length - @params.http_body.length
-      
-      # tell all dispatchers the request has begun
-      @dispatchers.each do |dispatcher|
-        dispatcher.request_begins(@params) 
-      end unless @dispatchers.nil? || @dispatchers.empty?
 
       # Some clients (like FF1.0) report 0 for body and then send a body.  This will probably truncate them but at least the request goes through usually.
       if remain <= 0
         # we've got everything, pack it up
         @body = StringIO.new
         @body.write @params.http_body
-        update_request_progress(0, content_length)
       elsif remain > 0
         # must read more data to complete body
         if remain > Const::MAX_BODY
@@ -58,14 +40,25 @@ module Mongrel
       @body.rewind if @body
     end
 
-    # updates all dispatchers about our progress
-    def update_request_progress(clen, total)
-      return if @dispatchers.nil? || @dispatchers.empty?
-      @dispatchers.each do |dispatcher|
-        dispatcher.request_progress(@params, clen, total) 
-      end 
+    # returns an environment which is rackable
+    # http://rack.rubyforge.org/doc/files/SPEC.html
+    # copied directly from racks mongrel handler
+    def env
+      env = params.clone
+      env.delete "HTTP_CONTENT_TYPE"
+      env.delete "HTTP_CONTENT_LENGTH"
+      env["SCRIPT_NAME"] = "" if env["SCRIPT_NAME"] == "/"
+      env.update({"rack.version" => [0,1],
+              "rack.input" => @body,
+              "rack.errors" => STDERR,
+
+              "rack.multithread" => true,
+              "rack.multiprocess" => false, # ???
+              "rack.run_once" => false,
+
+              "rack.url_scheme" => "http",
+            }) 
     end
-    private :update_request_progress
 
     # Does the heavy lifting of properly reading the larger body requests in 
     # small chunks.  It expects @body to be an IO object, @socket to be valid,
@@ -78,15 +71,11 @@ module Mongrel
 
         remain -= @body.write(@params.http_body)
 
-        update_request_progress(remain, total)
-
         # then stream out nothing but perfectly sized chunks
         until remain <= 0 or @socket.closed?
           # ASSUME: we are writing to a disk and these writes always write the requested amount
           @params.http_body = read_socket(Const::CHUNK_SIZE)
           remain -= @body.write(@params.http_body)
-
-          update_request_progress(remain, total)
         end
       rescue Object => e
         STDERR.puts "#{Time.now}: Error reading HTTP body: #{e.inspect}"
@@ -152,4 +141,4 @@ module Mongrel
       return params
     end
   end
-end
\ No newline at end of file
+end
diff --git a/lib/mongrel/http_response.rb b/lib/mongrel/http_response.rb
index 3076712..811570b 100644
--- a/lib/mongrel/http_response.rb
+++ b/lib/mongrel/http_response.rb
@@ -39,13 +39,15 @@ module Mongrel
     attr_reader :header_sent
     attr_reader :status_sent
 
-    def initialize(socket)
+    def initialize(socket, app_response)
       @socket = socket
-      @body = StringIO.new
-      @status = 404
+      @app_response = app_response
+      @body = StringIO.new(app_response[2].join('')) 
+      @status = app_response[0]
       @reason = nil
-      @header = HeaderOut.new(StringIO.new)
+      @header = HeaderOut.new
       @header[Const::DATE] = Time.now.httpdate
+      @header.merge!(app_response[1])
       @body_sent = false
       @header_sent = false
       @status_sent = false
@@ -59,11 +61,9 @@ module Mongrel
     # by simple passing "finalize=true" to the start method.  By default
     # all handlers run and then mongrel finalizes the request when they're
     # all done.
-    def start(status=200, finalize=false, reason=nil)
-      @status = status.to_i
-      @reason = reason
-      yield @header, @body
-      finished if finalize
+    # TODO: docs
+    def start #(status=200, finalize=false, reason=nil)
+      finished 
     end
 
     # Primarily used in exception handling to reset the response output in order to write
@@ -78,7 +78,7 @@ module Mongrel
         # XXX Dubious ( http://mongrel.rubyforge.org/ticket/19 )
         @header.out.close
         @header = HeaderOut.new(StringIO.new) 
-        
+
         @body.close
         @body = StringIO.new
       end
@@ -87,7 +87,7 @@ module Mongrel
     def send_status(content_length=@body.length)
       if not @status_sent
         @header['Content-Length'] = content_length if content_length and @status != 304
-        write(Const::STATUS_FORMAT % [@status, @reason || HTTP_STATUS_CODES[@status]])
+        write(Const::STATUS_FORMAT % [@status, HTTP_STATUS_CODES[@status]])
         @status_sent = true
       end
     end
@@ -163,4 +163,4 @@ module Mongrel
     end
 
   end
-end
\ No newline at end of file
+end
diff --git a/lib/mongrel/uri_classifier.rb b/lib/mongrel/uri_classifier.rb
deleted file mode 100644
index f39ccc9..0000000
--- a/lib/mongrel/uri_classifier.rb
+++ /dev/null
@@ -1,76 +0,0 @@
-
-module Mongrel
-  class URIClassifier
-  
-    class RegistrationError < RuntimeError
-    end
-    class UsageError < RuntimeError
-    end
-
-    attr_reader :handler_map   
- 
-    # Returns the URIs that have been registered with this classifier so far.
-    def uris
-      @handler_map.keys
-    end
-
-    def initialize
-      @handler_map = {}
-      @matcher = //
-      @root_handler = nil
-    end
-    
-    # Register a handler object at a particular URI. The handler can be whatever 
-    # you want, including an array. It's up to you what to do with it.
-    #
-    # Registering a handler is not necessarily threadsafe, so be careful if you go
-    # mucking around once the server is running.
-    def register(uri, handler)
-      raise RegistrationError, "#{uri.inspect} is already registered" if @handler_map[uri]
-      raise RegistrationError, "URI is empty" if !uri or uri.empty?
-      raise RegistrationError, "URI must begin with a \"#{Const::SLASH}\"" unless uri[0..0] == Const::SLASH
-      @handler_map[uri.dup] = handler
-      rebuild
-    end
-    
-    # Unregister a particular URI and its handler.
-    def unregister(uri)
-      handler = @handler_map.delete(uri)
-      raise RegistrationError, "#{uri.inspect} was not registered" unless handler
-      rebuild
-      handler
-    end
-    
-    # Resolve a request URI by finding the best partial match in the registered 
-    # handler URIs.
-    def resolve(request_uri)
-      if @root_handler
-        # Optimization for the pathological case of only one handler on "/"; e.g. Rails
-        [Const::SLASH, request_uri, @root_handler]
-      elsif match = @matcher.match(request_uri)
-        uri = match.to_s
-        # A root mounted ("/") handler must resolve such that path info matches the original URI.
-        [uri, (uri == Const::SLASH ? request_uri : match.post_match), @handler_map[uri]]
-      else
-        [nil, nil, nil]
-      end
-    end
-        
-    private
-    
-    def rebuild
-      if @handler_map.size == 1 and @handler_map[Const::SLASH]
-        @root_handler = @handler_map.values.first
-      else
-        @root_handler = nil
-        routes = @handler_map.keys.sort.sort_by do |uri|
-          -uri.length
-        end
-        @matcher = Regexp.new(routes.map do |uri|
-          Regexp.new('^' + Regexp.escape(uri))
-        end.join('|'))
-      end
-    end    
-    
-  end
-end
\ No newline at end of file