Hi All, I have a flask application that I am running on a https twisted webserver and forwarding the port to a url. Everything works well. I can goto the url using firefox, accept the certificate and get in. I have a small nose test to test if the url is up. Here is the test: @deferred(timeout = 31) @defer.inlineCallbacks def test_if_forwarding_url_is_ready(self): """ furl: Check if url is accessible """ # First wait for 10 seconds yield task.deferLater(reactor, 10, lambda:None) delay = 2 secureurl = Config.General.url # Every two seconds do a query and find out if you can get # data from the mapped url. If you can, then exit for i in range(15): got_data = False print "Trial :", i try: output = yield getPage(secureurl) got_data = True except Exception as E: print "Exception occurred:", E got_data = False if got_data == True: assert "secure magic" in output return yield task.deferLater(reactor, delay, lambda:None) # All 15 trials to get data from the url failed assert False When the test is run, it fails "most of the time" and outputs: Exception occurred: [('SSL routines', 'SSL23_READ', 'ssl handshake failure')] But if I run the test and right away goto the secureurl manually using firefox or chrome, as soon as I am on the webpage, the test passes! Sometimes I've seen the test will pass after 8 trials, if that is when I can type the url in firefox and press enter! Any ideas what is causing this and how to fix it? Maybe I am doing something stupid and perhaps someone can help me rewrite this code. Thanks, --Ram