code: def call(status)
        begin
          ping(@host, @port)
          status.ok("#{@alias} is accepting connections on port #{@port.inspect}")
        rescue Errno::ECONNREFUSED
          status.fail("#{@alias} is not accepting connections on port #{@port.inspect}")
        rescue SocketError => e
          status.fail("connection to #{@alias} on port #{@port.inspect} failed with '#{e.message}'")
        rescue Timeout::Error
          status.fail("#{@alias} did not respond on port #{@port.inspect} within #{@timeout} seconds")
        end
      end
docs: Check if a host is reachable and accepting connections on a specified port.
  
   The host and port to ping are specified with the <tt>:host</tt> and <tt>:port</tt> options. The port
   can be either a port number or port name for a well known port (i.e. "smtp" and 25 are
   equivalent). The default timeout to wait for a response is 2 seconds. This can be
   changed with the <tt>:timeout</tt> option.
  
   By default, the host name will be included in the output. If this could pose a security
   risk by making the existence of the host known to the world, you can supply the <tt>:alias</tt>
   option which will be used for output purposes. In general, you should supply this option
   unless the host is on a private network behind a firewall.
  
   === Example
  
     IsItWorking::Handler.new do |h|
       h.check :ping, :host => "example.com", :port => "ftp", :timeout => 4
     end