[1542] Different rcodes for expected exceptions

src/bin/bind10/bind10_src.py.in

@@ -805,6 +805,10 @@ class BoB:
                 'token': token,
                 'path': self._socket_path
             })
+        except isc.bind10.socket_cache.SocketError as e:
+            return isc.config.ccsession.create_answer(2, str(e))
+        except isc.bind10.socket_cache.ShareError as e:
+            return isc.config.ccsession.create_answer(3, str(e))
         except Exception as e:
             return isc.config.ccsession.create_answer(1, str(e))
 

src/bin/bind10/tests/bind10_test.py.in

@@ -296,6 +296,13 @@ class TestCacheCommands(unittest.TestCase):
         # to an error, not propagated
         self.__raise_exception = Exception("Test exception")
         check_code(1, self.__socket_args)
+        # The special "expected" exceptions
+        self.__raise_exception = \
+            isc.bind10.socket_cache.ShareError("Not shared")
+        check_code(3, self.__socket_args)
+        self.__raise_exception = \
+            isc.bind10.socket_cache.SocketError("Not shared", 13)
+        check_code(2, self.__socket_args)
 
     def drop_socket(self, token):
         """