From: brabuhr@...
Date: 2011-10-05T05:07:05+09:00
Subject: Re: net ping is in error in Windows 7 OS

On Mon, Oct 3, 2011 at 2:49 PM, Edward QU <ajax.htm@gmail.com> wrote:
> Dear All
> I am just want to write a program to ping my servers if them are alive,
> using Ruby, but it doesnt work,  whatever the ip address I put down in
> the programe, it all said ok, any advise would be great appricated.

Code from an old project:

  def ping hosts
    netstatus = {}

    threads = ThreadGroup.new
    PingTCP.econnrefused = true

    hosts = [hosts] unless hosts.respond_to?(:each)

    hosts.each{ |host|
      threads.add Thread.new(host){ |h|
        unless h.hostname.to_s.size < 1
          ping_obj = PingTCP.new(h.hostname.to_s, 22, 1)
          if ping_obj.ping?
            # Success pinging 'host'
            netstatus[h.id] = "online"
          else
            # Failed to ping 'host'
            netstatus[h.id] = "offline"
          end
        else
          netstatus[h.id] = ""
        end
       }
    }
    threads.list.each { |t| t.join }

    netstatus
  end