Make convenience favicon middleware.

Closespostrank-labs#98.

Author: dj2

examples/favicon.rb

@@ -2,15 +2,14 @@
 $: << File.dirname(__FILE__)+'/../../lib'
 require'goliath'
 require'postrank-uri'
-requireFile.dirname(__FILE__)+'/../favicon'
 
 # Install phantomjs: http://code.google.com/p/phantomjs/wiki/QuickStart
 # $> ruby rasterize.rb -sv
 # $> curl http://localhost:9000/?url=http://www.google.com (or rather, visit in the browser!)
 
 classRasterize < Goliath::API
 useGoliath::Rack::Params
-useFavicon,File.expand_path(File.dirname(__FILE__)+"/../public/favicon.ico")
+useGoliath::Rack::Favicon,File.expand_path(File.dirname(__FILE__)+"/../public/favicon.ico")
 useGoliath::Rack::Validation::RequestMethod,%w(GET)
 useGoliath::Rack::Validation::RequiredParam,{:key=>'url'}
 

examples/rasterize/rasterize.rb

@@ -37,6 +37,8 @@ def response(env)
 end
 
 classWebsocket < Goliath::API
+useGoliath::Rack::Favicon,File.expand_path(File.dirname(__FILE__) + '/ws/favicon.ico')
+
 get'/',WSInfo
 map'/ws',WebsocketEndPoint
 end

examples/websocket.rb

@@ -6,6 +6,7 @@ module Rack
 autoload:Builder,'goliath/rack/builder'
 autoload:DefaultMimeType,'goliath/rack/default_mime_type'
 autoload:DefaultResponseFormat,'goliath/rack/default_response_format'
+autoload:Favicon,'goliath/rack/favicon'
 autoload:Formatters,'goliath/rack/formatters'
 autoload:Heartbeat,'goliath/rack/heartbeat'
 autoload:JSONP,'goliath/rack/jsonp'

examples/ws/favicon.ico

@@ -0,0 +1,31 @@
+require'time'
+
+# Reads a favicon.ico statically at load time, renders it on any request for
+# '/favicon.ico', and sends every other request on downstream.
+#
+# Rack::Static is a better option if you're serving several static assets.
+#
+moduleGoliath
+moduleRack
+classFavicon
+definitialize(app,filename)
+@app=app
+@favicon=File.read(File.join(filename))
+@expires=Time.at(Time.now + (60 * 60 * 24 * 7)).utc.rfc822.to_s
+@last_modified=File.mtime(filename).utc.rfc822.to_s
+end
+
+defcall(env)
+ifenv['REQUEST_PATH'] == '/favicon.ico'
+env.logger.info('Serving favicon.ico')
+
+[200,{'Last-Modified'=>@last_mod,
+'Expires'=>@expires,
+'Content-Type'=>"image/vnd.microsoft.icon"},@favicon]
+else
+@app.call(env)
+end
+end
+end
+end
+end