socket--发送RST

 通过设置SO_LINGER套接字选项导致连接被关闭时在TCP套接字上发送一个RST。

 

/*client*/
int main(int argc, char **argv){
    int        sockfd;
    struct linger     ling;
    struct sockaddr_in    servaddr;
    if (argc != 2){
        printf("usage : tcpcli <IPAddress>");
        return 0;
    }

    sockfd = sockrt(AF_INET, SOCK_STREAM, 0);
    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_port = htone(SERV_PORT);
    inet_pton(AF_INET, argv[1], &servaddr.sin_addr);
    connect(sockfd, (SA*)&servaddr, sizeof(servaddr));
    
    ling.l_onoff = 1;
    ling.l_linger = 0;
    setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));
    close(sockfd);
    return 0;
        
}

 

/*server*/
int main(int argc, char **argv){
    int        i, maxi, maxfd, listenfd, connfd, sockfd;
    int        nreadt, client[