Development Stack
Server: Play 1.2.4, WebSocket
Client: jQuery, Boostrap
Tested with: Safari 5.0.5 (on Win XP)
On: Localhost
Inspired by a Blog-Post from Lucas Jellema I have done a similar demo with Play!.
The nice thing is that it was really easy to setup and deploy into the cloud. So everyone can test the websocket app - eeehm that was my initial plan (Actually it does not work currently, see why below). Further I took the chance to get in touch with git and published the source code on github. So feel free to test and fork.
https://github.com/multikoop/play-push-imgsel
Since there are some great cloud services arosed in the past I wanted to give it a try. So here are my experiences:
Deployment@Heroku
Prerequisite: install heroku CLI, git client (Please google for it how to set app. I only post the interesting stuff here)
C:\play\apps\play-push-imgsel>heroku login C:\play\apps\play-push-imgsel>heroku create -s cedar play-push-imgsel Creating play-push-imgsel... done, stack is cedar http://play-push-imgsel.herokuapp.com/ | git@heroku.com:play-push-imgsel.git Git remote heroku added C:\play\apps\play-push-imgsel>git push heroku master Counting objects: 46, done. Delta compression using up to 2 threads. Compressing objects: 100% (40/40), done. Writing objects: 100% (46/46), 110.54 KiB, done. Total 46 (delta 6), reused 0 (delta 0) -----> Heroku receiving push -----> Play! app detected -----> WARNING: Play! version not specified in dependencies.yml. Default version : 1.2.4 being used.... -----> Installing Play! 1.2.4..... -----> done -----> Installing ivysettings.xml..... done -----> Building Play! application... ~ _ _ ~ _ __ | | __ _ _ _| | ~ | '_ \| |/ _' | || |_| ~ | __/|_|\____|\__ (_) ~ |_| |__/ ~ ~ play! 1.2.4, http://www.playframework.org ~ 1.2.4 Building Play! application at directory ./ Resolving dependencies: .play/play dependencies ./ --forceCopy --silent - Duser.home=/tmp/build_jxh1de2j7wc9 2>&1 :: loading settings :: file = /tmp/build_jxh1de2j7wc9/.ivy2/ivysettings.x ml ~ Resolving dependencies using /tmp/build_jxh1de2j7wc9/conf/dependencies. yml, ~ ~ ~ No dependencies to install ~ ~ Done! ~ Precompiling: .play/play precompile ./ --silent 2>&1 Listening for transport dt_socket at address: 8000 10:26:55,430 INFO ~ Starting /tmp/build_jxh1de2j7wc9 10:26:56,387 INFO ~ Precompiling ... 10:27:03,224 INFO ~ Done. -----> No Procfile found. Will use the following default process: play run --http.port=$PORT $PLAY_OPTS -----> Discovering process types Procfile declares types -> (none) Default types for Play! -> web -----> Compiled slug size is 26.6MB -----> Launching... done, v5 http://play-push-imgsel.herokuapp.com deployed to Heroku To git@heroku.com:play-push-imgsel.git * [new branch] master -> master C:\play\apps\play-push-imgsel>heroku open Opening http://play-push-imgsel.herokuapp.com/ C:\play\apps\play-push-imgsel>
This is an awesome and easy to use stack!!!!! #PGH => Play, Git, Heroku!
Deployed at: http://play-push-imgsel.herokuapp.com/
Application is accessible but WS request are not working (oops).
C:\play\apps\play-push-imgsel>heroku logs ... ... 2012-01-14T10:36:29+00:00 heroku[router]: Error H12 (Request timeout) -> GET pla y-push-imgsel.herokuapp.com/ap... dyno=web.1 queue= wai t= service=30000ms status=503 bytes=0
=> Feature Request has been filed at Heroku. http://support.heroku.com/tickets/40910
Deployment@Cloudbees
Since WebSocket is currently not supported (according to: http://www.jamesward.com/2011/12/11/tutorial-play-framework-jpa-json-jquery-heroku) I decided to give cloudbees a try. Same here
Deployed at: http://play-push-imgsel.multikoop.cloudbees.net/
Same issues here:
... 20:27:42,952 WARN ~ 404 -> GET /application/pushimgsel/process (GET /application/pushimgsel/process) ...
=> Request #2383 "HTTP 404 on WebSocket Reque..." created. https://cloudbees.zendesk.com/tickets/2383
Conclusion
The cloud is not ready for WebSocket applications in early 2012! ;-)
If you want to see the demo live, all you need to do is
-Install Play 1.2.4
-Get push-imgsel Sourcecode: https://github.com/multikoop/play-push-imgsel
-Test with Safari (Other modern browsers currently not working, cause WebSocket Implementation in Play 1.2.4 cannot handle the newest Sec-WebSocket-Version Headers. Hopefully it will be fixed in 1.2.5 at least in 2.0.
Have fun!
