ip_ping.h

// Copyright 2022-2025 The Aerospace Corporation.
// This file is a part of SatCat5, licensed under CERN-OHL-W v2 or later.
// Automatic "ping" functionality using an ICMP dispatch object
 
#pragma once
 
#include <satcat5/ip_address.h>
#include <satcat5/ip_icmp.h>
#include <satcat5/polling.h>
 
namespace satcat5 {
    namespace ip {
        class Ping final
            : public satcat5::eth::ArpListener
            , public satcat5::ip::PingListener
            , public satcat5::poll::Timer
        {
        public:
            Ping(satcat5::ip::Dispatch* iface);
            ~Ping() SATCAT5_OPTIONAL_DTOR;
 
            static constexpr unsigned UNLIMITED = (unsigned)(-1);
 
            void arping(
                const satcat5::ip::Addr& dstaddr,
                unsigned qty = satcat5::ip::Ping::UNLIMITED);
 
            void ping(
                const satcat5::ip::Addr& dstaddr,
                unsigned qty = satcat5::ip::Ping::UNLIMITED);
 
            void stop();
 
        private:
            void arp_event(
                const satcat5::eth::MacAddr& mac,
                const satcat5::ip::Addr& ip) override;
            void ping_event(
                const satcat5::ip::Addr& from, u32 elapsed_usec) override;
            void send_arping();
            void send_ping();
            void timer_event() override;
 
            satcat5::ip::Dispatch* const m_iface;
            satcat5::ip::Address m_addr;
            satcat5::util::TimeVal m_arp_tref;
            unsigned    m_arp_remct;
            unsigned    m_icmp_remct;
            bool        m_reply_rcvd;
        };
    }
}