connect failure scenarios

tests/fakes/dest/reject_acl.rb

@@ -0,0 +1,22 @@
+#!/usr/bin/env ruby
+
+# Accept a connection, then immediately close it.  This simulates an ACL rejection.
+
+addr, port = *ARGV
+require 'socket'
+require 'timeout'
+
+serve_sock = TCPServer.open( addr, port )
+
+begin
+  Timeout.timeout( 2 ) do
+    serve_sock.accept.close
+  end
+rescue Timeout::Error
+  $stderr.puts "Timed out waiting for a connection"
+  exit 1
+end
+
+serve_sock.close
+
+exit(0)