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Diffstat (limited to 'ruby_1_8_6/lib/ping.rb')
| -rw-r--r-- | ruby_1_8_6/lib/ping.rb | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/ruby_1_8_6/lib/ping.rb b/ruby_1_8_6/lib/ping.rb deleted file mode 100644 index c2966b619c..0000000000 --- a/ruby_1_8_6/lib/ping.rb +++ /dev/null @@ -1,64 +0,0 @@ -# -# = ping.rb: Check a host for upness -# -# Author:: Yukihiro Matsumoto -# Documentation:: Konrad Meyer -# -# Performs the function of the basic network testing tool, ping. -# See: Ping. -# - -require 'timeout' -require "socket" - -# -# Ping contains routines to test for the reachability of remote hosts. -# Currently the only routine implemented is pingecho(). -# -# Ping.pingecho uses a TCP echo (not an ICMP echo) to determine if the -# remote host is reachable. This is usually adequate to tell that a remote -# host is available to telnet, ftp, or ssh to. -# -# Warning: Ping.pingecho may block for a long time if DNS resolution is -# slow. Requiring 'resolv-replace' allows non-blocking name resolution. -# -# Usage: -# -# require 'ping' -# -# puts "'jimmy' is alive and kicking" if Ping.pingecho('jimmy', 10) -# -module Ping - - # - # Return true if we can open a connection to the hostname or IP address - # +host+ on port +service+ (which defaults to the "echo" port) waiting up - # to +timeout+ seconds. - # - # Example: - # - # require 'ping' - # - # Ping.pingecho "google.com", 10, 80 - # - def pingecho(host, timeout=5, service="echo") - begin - timeout(timeout) do - s = TCPSocket.new(host, service) - s.close - end - rescue Errno::ECONNREFUSED - return true - rescue Timeout::Error, StandardError - return false - end - return true - end - module_function :pingecho -end - -if $0 == __FILE__ - host = ARGV[0] - host ||= "localhost" - printf("%s alive? - %s\n", host, Ping::pingecho(host, 5)) -end |