summaryrefslogtreecommitdiff
path: root/lib/ping.rb
diff options
context:
space:
mode:
Diffstat (limited to 'lib/ping.rb')
-rw-r--r--lib/ping.rb33
1 files changed, 20 insertions, 13 deletions
diff --git a/lib/ping.rb b/lib/ping.rb
index d742a50..065b1d2 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