Restler reports different behavior on different platforms when the target server doesn't exist (isn't running).

On win32, this test passes: restler passes a connection timeout. On non-win32, this test fails: restler returns an 'ECONNREFUSED' error.  See https://gist.github.com/robrich/74bff4b51358a3470160 for similar experiments on native http.request's different behavior when the target server doesn't exist.