ruby hockey.rb
Player1: Arrow keys
Player2: WASD keys
ruby hockey.rb 4000
ruby hockey.rb localhost:4000
If you don't have hockey.rb, get the code from server.
curl localhost:4000 > hockey.rb
telnet localhost 4000 [enter] [enter]
(sleep 1;curl localhost:4000 > hockey.rb) &;ruby hockey_generator.rb 4000
(sleep 1;curl localhost:5000 > hockey2.rb) &;ruby hockey.rb 5000
diff hockey.rb hockey2.rb && echo ok