a little more code shuffling to clean up the body processor class a bit

lib/rack/livereload/body_processor.rb

@@ -61,6 +61,7 @@ module Rack
       end
 
       def process!(env)
+        @env = env
         @body.close if @body.respond_to?(:close)
 
         @new_body = [] ; @body.each { |line| @new_body << line.to_s }
@@ -70,10 +71,29 @@ module Rack
 
         @new_body.each do |line|
           if !@livereload_added && line['<head']
-            host_to_use = (@options[:host] || env['HTTP_HOST'] || 'localhost').gsub(%r{:.*}, '')
+            line.gsub!(HEAD_TAG_REGEX) { |match| %{#{match}#{template.result(binding)}} }
 
-            app_root = ENV['RAILS_RELATIVE_URL_ROOT'] || ''
+            @livereload_added = true
+          end
 
+          @content_length += line.bytesize
+          @processed = true
+        end
+      end
+
+      def app_root
+        ENV['RAILS_RELATIVE_URL_ROOT'] || ''
+      end
+
+      def host_to_use
+        (@options[:host] || @env['HTTP_HOST'] || 'localhost').gsub(%r{:.*}, '')
+      end
+
+      def template
+        ERB.new(::File.read(::File.expand_path('../../../../skel/livereload.html.erb', __FILE__)))
+      end
+
+      def livereload_source
         if use_vendored?
           src = "#{app_root}#{LIVERELOAD_JS_PATH.dup}?host=#{host_to_use}"
         else
@@ -84,16 +104,7 @@ module Rack
         src << "&amp;maxdelay=#{@options[:max_delay]}" if @options[:max_delay]
         src << "&amp;port=#{@options[:port]}" if @options[:port]
 
-            template = ERB.new(::File.read(::File.expand_path('../../../../skel/livereload.html.erb', __FILE__)))
-
-            line.gsub!(HEAD_TAG_REGEX) { |match| %{#{match}#{template.result(binding)}} }
-
-            @livereload_added = true
-          end
-
-          @content_length += line.bytesize
-          @processed = true
-        end
+        src
       end
     end
   end

skel/livereload.html.erb

@@ -11,5 +11,5 @@
 <script type="text/javascript">
   RACK_LIVERELOAD_PORT = <%= @options[:live_reload_port] %>;
 </script>
-<script type="text/javascript" src="<%= src %>"></script>
+<script type="text/javascript" src="<%= livereload_source %>"></script>