Potential fix for #436

requests/models.py

@@ -675,6 +675,9 @@ class Response(object):
             while 1:
                 #XXX correct line size? (httplib has 64kb, seems insane)
                 pending_bytes = fp.readline(40).strip()
+                if pending_bytes == '':
+                    # No content, like a HEAD request. Break out.
+                    break
                 pending_bytes = int(pending_bytes, 16)
                 if pending_bytes == 0:
                     break

tests/test_requests.py

@@ -797,7 +797,10 @@ class RequestsTestSuite(TestSetup, unittest.TestCase):
         r = requests.get(httpbin('status', '404'))
         r.text
 
-
+    def test_chunked_head_redirect(self):
+        u = "http://t.co/NFrx0zLG"
+        r = requests.head(u, allow_redirects=True)
+        self.assertEqual(r.status_code, 200)
 
 if __name__ == '__main__':
     unittest.main()