The Ping::External class encapsulates methods for external (system) pings.
Pings the host using your system's ping utility and checks for any errors or warnings. Returns true if successful, or false if not.
If the ping failed then the Net::Ping#exception method should contain a string indicating what went wrong. If the ping succeeded then the Net::Ping#warning method may or may not contain a value.
# File lib/net/ping/external.rb, line 33 def ping(host = @host) super(host) stdin = stdout = stderr = nil pstring = "ping " bool = false orig_cp = nil case RbConfig::CONFIG['host_os'] when /linux|bsd|osx|mach|darwin/ pstring += "-c 1 #{host}" when /solaris|sunos/ pstring += "#{host} 1" when /hpux/ pstring += "#{host} -n 1" when /win32|windows|msdos|mswin|cygwin|mingw/ orig_cp = GetConsoleCP() SetConsoleCP(437) if orig_cp != 437 # United States pstring += "-n 1 #{host}" else pstring += "#{host}" end start_time = Time.now begin err = nil Timeout.timeout(@timeout){ stdin, stdout, stderr = Open3.popen3(pstring) err = stderr.gets # Can't chomp yet, might be nil } stdin.close stderr.close if File::ALT_SEPARATOR && GetConsoleCP() != orig_cp SetConsoleCP(orig_cp) end unless err.nil? if err =~ /warning/ @warning = err.chomp bool = true else @exception = err.chomp end # The "no answer" response goes to stdout, not stderr, so check it else lines = stdout.readlines stdout.close if lines.nil? || lines.empty? bool = true else regexp = / no\ answer| host\ unreachable| could\ not\ find\ host| request\ timed\ out| 100%\ packet\ loss /x lines.each{ |line| if regexp.match(line) @exception = line.chomp break end } bool = true unless @exception end end rescue Exception => error @exception = error.message ensure stdin.close if stdin && !stdin.closed? stdout.close if stdout && !stdout.closed? stderr.close if stderr && !stderr.closed? end # There is no duration if the ping failed @duration = Time.now - start_time if bool bool end