doc/sdk/header-based-plugin-examples/basic-authorization-plugin/implementing-the-handler-and-getting-a-handle-to-the-transaction.en.rst

Implementing the Handler and Getting a Handle to the Transaction
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  "License"); you may not use this file except in compliance
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   http://www.apache.org/licenses/LICENSE-2.0
 
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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 = (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;
    }