fix broken proxy auth check

django_cas/backends.py

@@ -49,10 +49,10 @@ def _verify_cas2(ticket, service):
            urlencode(params))
 
     page = urlopen(url)
-
-    try:
     response = page.read()
     tree = ElementTree.fromstring(response)
+    page.close()
+
     if tree[0].tag.endswith('authenticationSuccess'):
         username = tree[0][0].text
         if len(tree[0]) >= 2 and tree[0][1].tag.endswith('proxyGrantingTicket'):
@@ -68,8 +68,6 @@ def _verify_cas2(ticket, service):
         return username
     else:
         return None
-    finally:
-        page.close()
 
 
 def verify_proxy_ticket(ticket, service):

django_cas/tests/cas_tests.py

@@ -98,6 +98,7 @@ class TestCAS(unittest.TestCase):
             print 'PASS: Got PT - %s' % pt
         else:
             print pt
+        #self.logout()    
 
         print ''
         print 'Test SSO server login with proxy ticket'
@@ -107,6 +108,7 @@ class TestCAS(unittest.TestCase):
             print 'PASS: Got Success response for app %s using proxy %s' % (self.urls['app'], proxy) 
         else:
             print 'FAIL: The proxy login to %s via %s has failed' % (self.urls['app'], self.urls['proxy']) 
+        self.logout()
         
         print ''
         print 'Test direct proxy login'