Draw is a demo of the websocket protocol in ChicagoBoss

Background

open whiteboard is a drawing websocket javascript application, you can find more information on the given link.

https://developer.mozilla.org/fr/demosdetail/open-whiteboard

draw come as an otp application

see also draw with naga

Quickstart

Get draw

>git clone http://github.com/mihawk/draw.git
>cd draw
>make rel

Start Draw

>cd draw
>rel/draw/bin/draw start

or get a console to see log :)

>rel/draw/bin/draw console 

Open http://localhost:8001/draw in your browser, open a second web browser on the same url, or a tab in the first browser then start to draw. :)

draw is shipped with cb_admin, http://localhost:8001/admin

Digging in

Behind the scenes, you should look at:

drawing.js

draw_draw_protocol_websocket.erl

Application directory canva

.
├── apps <----- boss app folder
│ ├── cb_admin
│ └── draw
├── deps
│ ├── boss <----- all yours deps boss ... and yours
│ └── ...
├── dist
│ └── draw-<rel.vsn>.tar.gz <----- your tarball
├── Makefile
├── rebar
├── rebar.config
└── rel
├── files │ ├── draw
│ ├── draw.cmd
│ ├── erl
│ ├── install_upgrade.escript
│ ├── nodetool
│ ├── start_erl.cmd
│ ├── sys.config
│ └── vm.args
├── reltool.config
└── vars.config