ACCEPT()

this is used on the server-side to create a new socket for an incoming TCP connection

    // 4. accept() - Accept an incoming connection
    struct sockaddr_in client_addr;
    socklen_t client_len = sizeof(client_addr);
    int client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_len);
    if (client_socket < 0) {
        perror("accept");
        close(server_socket);
        exit(EXIT_FAILURE);
    }