bin/ws_shootout in plezi-0.15.1 vs bin/ws_shootout in plezi-0.16.0

@@ -10,31 +10,30 @@
 Dir.chdir(File.expand_path(File.join('..', '..', 'lib'), __FILE__))
 require 'bundler/setup'
 require 'plezi'
 
 class ShootoutApp
+  CHANNEL = "shootout".freeze
   # the default HTTP response
   def index
     "This application should be used with the websocket-shootout benchmark utility."
   end
   def on_open
-    subscribe channel: "shootout"
+    subscribe CHANNEL
   end
   # we won't be using AutoDispatch, but directly using the `on_message` callback.
   def on_message data
     if data[0] == 'b' # binary
-      publish(channel: "shootout", message: data)
+      publish(CHANNEL, data)
       data[0] = 'r'
       write data
       return
     end
     cmd, payload = JSON(data).values_at('type', 'payload')
     if cmd == 'echo'
       write({type: 'echo', payload: payload}.to_json)
     else
-      # data = {type: 'broadcast', payload: payload}.to_json
-      # broadcast :push2client, data
-      publish(channel: "shootout", message: ({type: 'broadcast', payload: payload}.to_json))
+      publish(CHANNEL, ({type: 'broadcast', payload: payload}.to_json))
       write({type: "broadcastResult", payload: payload}.to_json)
     end
   rescue
     puts "Incoming message format error - not JSON?"
   end