Line data    Source code

       1              : /*
       2              :  *
       3              :  *    Copyright (c) 2021 Project CHIP Authors
       4              :  *
       5              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6              :  *    you may not use this file except in compliance with the License.
       7              :  *    You may obtain a copy of the License at
       8              :  *
       9              :  *        http://www.apache.org/licenses/LICENSE-2.0
      10              :  *
      11              :  *    Unless required by applicable law or agreed to in writing, software
      12              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14              :  *    See the License for the specific language governing permissions and
      15              :  *    limitations under the License.
      16              :  */
      17              : 
      18              : /**
      19              :  * @file
      20              :  *   This file implements the handler for echo messages.
      21              :  */
      22              : 
      23              : #include <app/server/EchoHandler.h>
      24              : 
      25              : #include <lib/core/ErrorStr.h>
      26              : #include <protocols/echo/Echo.h>
      27              : 
      28              : namespace {
      29              : 
      30              : // The EchoServer object.
      31              : chip::Protocols::Echo::EchoServer gEchoServer;
      32              : 
      33              : /**
      34              :  * Callback handler when a CHIP EchoRequest is received.
      35              :  *
      36              :  * @param [in] ec      The exchange context holding the incoming message.
      37              :  * @param [in] payload The buffer holding the message.  This function guarantees
      38              :  *                     that it will free the buffer before returning.
      39              :  *
      40              :  */
      41            0 : void HandleEchoRequestReceived(chip::Messaging::ExchangeContext * ec, chip::System::PacketBufferHandle && payload)
      42              : {
      43            0 :     ChipLogProgress(AppServer, "Echo Request, len=%" PRIu32 "... sending response.\n",
      44              :                     static_cast<uint32_t>(payload->DataLength()));
      45            0 : }
      46              : 
      47              : } // namespace
      48              : 
      49            0 : CHIP_ERROR InitEchoHandler(chip::Messaging::ExchangeManager * exchangeMgr)
      50              : {
      51            0 :     CHIP_ERROR err = CHIP_NO_ERROR;
      52              : 
      53            0 :     err = gEchoServer.Init(exchangeMgr);
      54            0 :     SuccessOrExit(err);
      55              : 
      56              :     // Arrange to get a callback whenever an Echo Request is received.
      57            0 :     gEchoServer.SetEchoRequestReceived(HandleEchoRequestReceived);
      58              : 
      59            0 : exit:
      60            0 :     if (err != CHIP_NO_ERROR)
      61              :     {
      62            0 :         ChipLogError(AppServer, "EchoServer failed, err:%s\n", chip::ErrorStr(err));
      63              :     }
      64              : 
      65            0 :     return err;
      66              : }