diff options
author | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 1999-01-20 04:59:39 +0000 |
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committer | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 1999-01-20 04:59:39 +0000 |
commit | 62e648e148b3cb9f96dcce808c55c02b7ccb4486 (patch) | |
tree | 9708892ece92e860d81559ab55e6b1f9400d7ffc /lib/ping.rb | |
parent | aeb049c573be4dc24dd20650f40e4777e0f698cf (diff) |
ruby 1.3 cycle
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/RUBY@372 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/ping.rb')
-rw-r--r-- | lib/ping.rb | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/lib/ping.rb b/lib/ping.rb index d742a50f99..065b1d2303 100644 --- a/lib/ping.rb +++ b/lib/ping.rb @@ -26,6 +26,10 @@ # # The timeout in seconds. If not specified it will default to 5 seconds. # +# : service +# +# The service port to connect. The default is "echo". +# #= WARNING # # pingecho() uses user-level thread to implement the timeout, so it may block @@ -33,23 +37,26 @@ # #=end +require 'timeout' + module Ping require "socket" - def pingecho(host, timeout=5) + def pingecho(host, timeout=5, service="echo") begin - x = Thread.current - y = Thread.start { - sleep timeout - x.raise RuntimeError if x.status - } - s = TCPsocket.new(host, "echo") - s.close - return TRUE + timeout(timeout) do + s = TCPsocket.new(host, service) + s.close + end rescue - return FALSE; - ensure - Thread.kill y if y.status + return false end + return true end - module_function "pingecho" + module_function :pingecho +end + +if $0 == __FILE__ + host = ARGV[0] + host ||= "localhost" + printf("%s alive? - %s\n", host, Ping::pingecho(host, 5)) end |