From: Pat Maddox <pergesu@...>
Date: 2005-04-02T20:05:15+09:00
Subject: Handling Timeout::Error from TCPSocket

I'm writing a little method that just tries to open a tcp socket
connection, then closes it off.  I'm using timeout to limit the amount
of time it tries to connect (is there a better way?).  If it times
out, I just want to say that the connect failed.  Despite catching the
Timeout::Error (I think, anyway), I always get the Exception output. 
First, here's the method:

	def execute
		status = timeout(@timeoutval) {
			socket = TCPSocket.new(@host, @port) rescue false
		
			socket.close if socket
			return socket != false
		} rescue Timeout::Error
		
		return false
	end

And now the output from my unit test:

Started
/usr/local/lib/ruby/1.8/timeout.rb:42:in `new': execution expired
(Timeout::Error)
        from ./PortHostTest.rb:16:in `execute'
        from ./PortHostTest.rb:15:in `timeout'
        from /usr/local/lib/ruby/1.8/timeout.rb:55:in `timeout'
        from ./PortHostTest.rb:15:in `execute'
        from ./HostTest.rb:10:in `runTest'
        from ../tests/test_HostTest.rb:14:in `test_simple'
        from /usr/local/lib/ruby/1.8/test/unit/testcase.rb:70:in `__send__'
        from /usr/local/lib/ruby/1.8/test/unit/testcase.rb:70:in `run'
         ... 10 levels...
        from /usr/local/lib/ruby/1.8/test/unit/autorunner.rb:194:in `run'
        from /usr/local/lib/ruby/1.8/test/unit/autorunner.rb:14:in `run'
        from /usr/local/lib/ruby/1.8/test/unit.rb:285
        from /usr/local/lib/ruby/1.8/test/unit.rb:283