在C++中实现心跳检查套接字连接的最佳方法是什么？

#include<iostream>
#include <cstring>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <netinet/tcp.h>

int main() {
    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
        std::cerr << "Error creating socket."<< std::endl;
        return -1;
    }

    sockaddr_in serv_addr;
    memset(&serv_addr, 0, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(8080);
    inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr);

    if (connect(sockfd, (sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
        std::cerr << "Error connecting to server."<< std::endl;
        return -1;
    }

    int keepAlive = 1;
    if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &keepAlive, sizeof(keepAlive)) < 0) {
        std::cerr << "Error enabling TCP KeepAlive."<< std::endl;
        return -1;
    }

    // Perform your communication with the server here.

    close(sockfd);
    return 0;
}