Class: Net::PingExternal

Inherits:
Ping
  • Object
show all
Defined in:
lib/net/ping.rb

Overview

Use your system’s ping command

Constant Summary

Constants inherited from Ping

Net::Ping::VERSION

Instance Attribute Summary

Attributes inherited from Ping

#exception, #host, #port, #timeout, #warning

Instance Method Summary collapse

Methods inherited from Ping

#initialize

Constructor Details

This class inherits a constructor from Net::Ping

Instance Method Details

#ping ⇒ Object Also known as: ping?

Pings the host using your system’s ping utility and checks for any errors or warnings.



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# File 'lib/net/ping.rb', line 133

def ping
   super
   input, output, error = ""
   pstring = "ping "
   success = false
   
   case PLATFORM
      when /linux|bsd/i
         pstring += "-c 1 #{@host}"
      when /solaris|sunos/i
         pstring += "#{@host} 1"
      when /hpux/i
         pstring += "#{@host} -n 1"
      when /win32|windows/i
         pstring += "-n 1 #{@host}"
      else
         pstring += "#{@host}"
   end
   
   if File::ALT_SEPARATOR
      require "win32/open3"           
   else
      require "open3"            
   end
   
   Timeout.timeout(@timeout){
      input, output, error = Open3.popen3(pstring)
   }

   e = error.gets # Can't chomp yet, might be nil

   input.close
   error.close
  
   unless e.nil?
      if e =~ /warning/i
         @warning = e.chomp
         success = true
      else
         @exception = e.chomp
      end
   # The "no answer" response goes to stdout, not stderr, so check it
   else
      lines = output.readlines
      output.close
      if lines.nil? || lines.empty?
         success = true
      else
         regexp = /no answer|host unreachable|could not find host/i
         lines.each{ |e|
            if regexp.match(e)
               @exception = e.chomp
            end
         }
         success = true
      end
   end
   success
end