Net ping is in error in Windows 7 OS

ruby-talk
1

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.

my PC os is windows7 64digital

···

-------------------------------------------
require 'net/ping'
include Net

Ping::TCP.service_check = true

loocaalhost="192.168.1.555"

if Net::Ping::TCP.new('loocaalhost')
  puts 'TCP OK'
else
  puts 'NO respons'
end

if Net::Ping::External.new('loccalhost')
  puts 'Exteranl OK'
else
  puts 'NO respons'
end

---------------
TCP OK
Exteranl OK

--
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2

Just change:

Net::Ping::TCP.new('loocaalhost')

to:

Net::Ping::TCP.new(loocaalhost)

And you might want to consider a different spelling of "loocaalhost" as well, but you don't want to quote your variable.

···

From my iPhone
---
Pat

On Oct 3, 2011, at 11:49 AM, 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.

my PC os is windows7 64digital
-------------------------------------------
require 'net/ping'
include Net

Ping::TCP.service_check = true

loocaalhost="192.168.1.555"

if Net::Ping::TCP.new('loocaalhost')
puts 'TCP OK'
else
puts 'NO respons'
end

if Net::Ping::External.new('loccalhost')
puts 'Exteranl OK'
else
puts 'NO respons'
end

---------------
TCP OK
Exteranl OK

--
Posted via http://www.ruby-forum.com/\.

3

Thank you Pat for your kindly help.
I did , but it still work wrong.
I test it in irb as the following:

require "net/ping"

=> true

puts 'OK' if Net::Ping::External.new '192.168.1.1'

OK
=> nil

puts 'OK' if Net::Ping::External.new '192.168.1.5'

OK
=> nil

puts 'OK' if Net::Ping::External.new '192.168.1.555'

OK
=> nil

what a amazing, the 199.168.1.555 can be ping and is ok ?!
I use Ruby 1.9.2-260, win7 64. net-ping 1.5.1, kabasky fire wall in
local PC.

···

--
Posted via http://www.ruby-forum.com/\.

4

I used msdos ping command and captured the stdout and it works just
fine.

   $msdos="ping "+@target #construct the msdos command
   result=eval("`"+$msdos+"`") #notice the eval statement

This is before I became aware of net/ping

Hope that helps

Joe

···

--
Posted via http://www.ruby-forum.com/.

5

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

···

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.

6

thanks all above reply,
the Net::Ping::External could not work, but the Net::Ping::TCP. works.

pt = Net::Ping::TCP.new("#{ip_list}")
         if pt.ping
         # puts "#{ip_list} TCP ping successful"
        else
         # puts "ping unsuccessful: #{pt.exception}"
         end

Regards
Edward

···

--
Posted via http://www.ruby-forum.com/.

7

according to the docs
(http://rubyforge.org/docman/view.php/735/296/ping_txt.html)
you need to call the ping method on the object.
You are just creating the object

cheers