server.cpp

#include <iostream>
#include <sys/socket.h>
#include <netinet/in.h>
#include <linux/if_ether.h>

int main() {

    int socketfd = socket(AF_INET, SOCK_RAW, htons(ETH_P_IP));
    if (socketfd < 0) {
        std::cout << "socket could not be created\n";
        exit(-1);
    } else {
        std::cout << "socket created\n";
    }

    while (true) {
        char buffer[1024] = {0};
        recv(socketfd, buffer, 1024, 0);
        std::cout << "received packet";
    }
}