ICMP.h

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/*
  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - <http://www.fabgl.com>
  Copyright (c) 2019-2022 Fabrizio Di Vittorio.
  All rights reserved.
 
 
* Please contact fdivitto2013@gmail.com if you need a commercial license.
 
 
* This library and related software is available under GPL v3.
 
  FabGL is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
 
  FabGL is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with FabGL.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
#pragma once
 
 
#ifdef ARDUINO
 
 
#include "Client.h"
 
#include "freertos/FreeRTOS.h"
 
#include "lwip/netdb.h"
#include "lwip/raw.h"
#include "lwip/icmp.h"
#include "lwip/inet_chksum.h"
 
 
#include "fabglconf.h"
#include "fabutils.h"
 
 
 
namespace fabgl {
 
 
 
 class ICMP {
 
public:
 
  ICMP();
  ~ICMP();
 
  // send Echo Request and wait for Echo Reply
  // returns "measured" echo time in microseconds. ret -1 on timeout or error
  int ping(IPAddress const &dest);
  int ping(char const * host);  // host can be IP or host name
 
  int receivedBytes() { return m_receivedBytes; }
 
  int receivedTTL() { return m_receivedTTL; }
 
  int receivedSeq() { return m_waitingSeq; }
 
  IPAddress const& hostIP() { return m_destIP; }
 
private:
 
  static uint8_t raw_recv_fn(void * arg, raw_pcb * pcb, pbuf * p, const ip_addr_t * addr);
 
  IPAddress     m_destIP;
  QueueHandle_t m_queue;
  int           m_waitingID;
  int           m_waitingSeq;
  int           m_receivedBytes;
  int           m_receivedTTL;
};
 
 
 
 
}
 
 
#endif // #ifdef ARDUINO