发送带有二进制null\'\\\\ 0\'的字符串

abc

asdf

int sock;
    struct sockaddr_in server_addr;
    struct hostent *host;
    host= (struct hostent *) gethostbyname((char *)ip);
    if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1){
        perror(\"socket\");
        exit(1);
    }
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(port);
    server_addr.sin_addr = *((struct in_addr *)host->h_addr);
    memset(server_addr.sin_zero,0,8);

if (sendto(sock, buf, sizeof buf, 0, (struct sockaddr *)&server_addr, sizeof(struct sockaddr))==-1)

int sock;
    int addr_len, bytes_read;
    struct sockaddr_in server_addr , client_addr;
    if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
        perror(\"Socket\");
        exit(1);
    }
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(port);
    server_addr.sin_addr.s_addr = INADDR_ANY;
    //bzero(&(server_addr.sin_zero),8);
    memset(server_addr.sin_zero,0,8);
    if (bind(sock,(struct sockaddr *)&server_addr,
    sizeof(struct sockaddr)) == -1){
        perror(\"Bind\");
        exit(1);
    }
    addr_len = sizeof(struct sockaddr);

                            diep(\"sendto()\");

bytes_read = recvfrom(sock,buf,sizeof (buf),0,
            (struct sockaddr *)&client_addr, &addr_len);