.. Licensed to the Apache Software Foundation (ASF) under one
   or more contributor license agreements.  See the NOTICE file
   distributed with this work for additional information
   regarding copyright ownership.  The ASF licenses this file
   to you under the Apache License, Version 2.0 (the
   "License"); you may not use this file except in compliance
   with the License.  You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing,
   software distributed under the License is distributed on an
   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   KIND, either express or implied.  See the License for the
   specific language governing permissions and limitations
   under the License.

.. include:: ../../../../common.defs

Implementing the Handler and Getting a Handle to the Transaction
****************************************************************

The handler function for the plugin's parent continuation is implemented
as follows:

.. code-block:: c

    static int
    auth_plugin (TSCont contp, TSEvent event, void *edata)
    {

         TSHttpTxn txnp = static_cast<TSHttpTxn>(edata);
         switch (event) {
         case TS_EVENT_HTTP_OS_DNS:
              handle_dns (txnp, contp);
              return 0;
         case TS_EVENT_HTTP_SEND_RESPONSE_HDR:
              handle_response (txnp);
              return 0;
         default:
              break;
         }

         return 0;
    }

