http://127.0.0.1:9210/Counter?handler=Naive
  visitors sent 400, answered 400, errors 0
  highest number shown 78, distinct numbers 78
  visitors lost by the counter 322
http://127.0.0.1:9210/Counter
  visitors sent 400, answered 400, errors 0
  highest number shown 400, distinct numbers 400
  visitors lost by the counter 0
