[2964] (unrelated) cleanup: removed the check for pydnspp module.

it doesn't make sense in practice and should better be cleaned up.

src/bin/xfrin/tests/xfrin_test.py

@@ -1005,7 +1005,7 @@ class TestAXFR(TestXfrinConnection):
         def message_has_tsig(data):
             # a simple check if the actual data contains a TSIG RR.
             # At our level this simple check should suffice; other detailed
-            # tests regarding the TSIG protocol are done in pydnspp.
+            # tests regarding the TSIG protocol are done in the isc.dns module.
             msg = Message(Message.PARSE)
             msg.from_wire(data)
             return msg.get_tsig_record() is not None
@@ -2644,14 +2644,6 @@ class TestXfrin(unittest.TestCase):
         self.assertEqual(self.xfr.command_handler("retransfer",
                                                   self.args)['result'][0], 1)
 
-    def test_command_handler_retransfer_nomodule(self):
-        dns_module = sys.modules['pydnspp'] # this must exist
-        del sys.modules['pydnspp']
-        self.assertEqual(self.xfr.command_handler("retransfer",
-                                                  self.args)['result'][0], 1)
-        # sys.modules is global, so we must recover it
-        sys.modules['pydnspp'] = dns_module
-
     def test_command_handler_retransfer_datasrc_error(self):
         # Failure cases due to various errors at the data source (config/data)
         # level

src/bin/xfrin/xfrin.py.in

@@ -1708,11 +1708,6 @@ class Xfrin:
 
     def xfrin_start(self, zone_name, rrclass, master_addrinfo, tsig_key,
                     request_ixfr, check_soa=True):
-        if "pydnspp" not in sys.modules:
-            return (1,
-                    "xfrin failed, can't load dns message python library: " +
-                    "'pydnspp'")
-
         # check max_transfer_in, else return quota error
         if self.recorder.count() >= self._max_transfers_in:
             return (1, 'xfrin quota error')