Any success with Sinatra working together with EventMachine WebSockets?

Did not try it, but should not be too hard:

require 'em-websocket'require 'sinatra/base'require 'thin'EM.run do  class App < Sinatra::Base    # Sinatra code here  end  EM::WebSocket.start(:host => '0.0.0.0', :port => 3001) do    # Websocket code here  end  # You could also use Rainbows! instead of Thin.  # Any EM based Rack handler should do.  Thin::Server.start App, '0.0.0.0', 3000end

Also, Cramp has a websocket implementation that works directly with Thin/Rainbows! you might be able to extract, so you won't even need to run the server on another port.

Thanks Konstantin... that worked! I had to tweak your code slightly. I added comments where I changed it.

-poul

require 'rubygems'      # <-- Added this requirerequire 'em-websocket'require 'sinatra/base'require 'thin'EventMachine.run do     # <-- Changed EM to EventMachine  class App < Sinatra::Base      get '/' do          return "foo"      end  end  EventMachine::WebSocket.start(:host => '0.0.0.0', :port => 8080) do |ws| # <-- Added |ws|      # Websocket code here      ws.onopen {          ws.send "connected!!!!"      }      ws.onmessage { |msg|          puts "got message #{msg}"      }      ws.onclose   {          ws.send "WebSocket closed"      }  end  # You could also use Rainbows! instead of Thin.  # Any EM based Rack handler should do.  App.run!({:port => 3000})    # <-- Changed this line from Thin.start to App.run!end

I stumbled onto this websocket-rack github project which is basically a rackified em-websocket and actually got it to work nicely side-by-side with a Sinatra app. Here's my config.ru:

require 'rubygems'require 'rack/websocket'require 'sinatra/base'class WebSocketApp < Rack::WebSocket::Application  # ...endclass SinatraApp < Sinatra::Base  # ...endmap '/ws' do  run WebSocketApp.newendmap '/' do  run SinatraAppend

Have fun!
Colin