@@ -30,6 +30,8 @@ import collections

 ################### Customization hooks

 class EventHandler(object):

+	external_port = None

+

 	@property

 	def store(self):

 		self.__class__.store= MongoDBStore()

@@ -297,7 +299,10 @@ class OpenIDResource(Resource):

 	def buildURL(self, txrequest, action, **query):

 		"""Build a URL relative to the server base_url, with the given

 		query parameters added."""

-		base = urlparse.urljoin(txrequest.prePathURL()+'/', action)

+		url = urlparse.urlparse(txrequest.prePathURL()+'/')

+		if self.eventhandler.external_port:

+			url.port = self.eventhandler.external_port

+		base = urlparse.urljoin(url.geturl(), action)

 		print 'buildURL',base

 		return appendArgs(base, query)