arp_message.hh

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#ifndef SPONGE_LIBSPONGE_ARP_MESSAGE_HH
#define SPONGE_LIBSPONGE_ARP_MESSAGE_HH
 
#include "ethernet_header.hh"
#include "ipv4_header.hh"
 
using EthernetAddress = std::array<uint8_t, 6>;
 
struct ARPMessage {
    static constexpr size_t LENGTH = 28;          
    static constexpr uint16_t TYPE_ETHERNET = 1;  
    static constexpr uint16_t OPCODE_REQUEST = 1;
    static constexpr uint16_t OPCODE_REPLY = 2;
 
    uint16_t hardware_type = TYPE_ETHERNET;              
    uint16_t protocol_type = EthernetHeader::TYPE_IPv4;  
    uint8_t hardware_address_size = sizeof(EthernetHeader::src);
    uint8_t protocol_address_size = sizeof(IPv4Header::src);
    uint16_t opcode{};  
 
    EthernetAddress sender_ethernet_address{};
    uint32_t sender_ip_address{};
 
    EthernetAddress target_ethernet_address{};
    uint32_t target_ip_address{};
 
    ParseResult parse(const Buffer buffer);
 
    std::string serialize() const;
 
    std::string to_string() const;
 
    bool supported() const;
};
 
 
#endif  // SPONGE_LIBSPONGE_ETHERNET_HEADER_HH