domain socket client code

#include
#include
#include
#include
#include
#include
#include

#define MAXSIZE     (8 * 4096)

int main(int argc, char *argv[])
{
    int sockfd, ret;
    unsigned long opt;
    struct sockaddr_un serv_addr;
    char recvmsg[MAXSIZE], sendmsg[MAXSIZE];
       
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) {
        perror("socket error");
        return -1;
    }

    opt = 0;
    /*
    ret = ioctl(sockfd, FIONBIO, (unsigned long)&opt);
    if (ret < 0) {
        close(sockfd);
        return -1;
    }
    */
    memset(&serv_addr, 0, sizeof(serv_addr));
    serv_addr.sun_family = AF_UNIX;
    strcpy((char *)serv_addr.sun_path, "e:\\sockfile");

    ret = 0;
    if ((ret = connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr))) < 0) {
        perror("connect err");
        return -1;
    }
 printf("connect to server success!\n");
   
    while (1) {
        memset(sendmsg, 0, sizeof(sendmsg));
        memset(recvmsg, 0, sizeof(recvmsg));

        printf("client:\n");
        gets(sendmsg);
       
        if (write(sockfd, sendmsg, strlen(sendmsg)) < 0) {
         printf("send msg failed!\n");
            break;
        }
      /* 
        if (send(sockfd, sendmsg, strlen(sendmsg) + 1, 0) < 0) {
            printf("send msg failed!\n");
            break;
        }
 */
        if (!strcmp(sendmsg, "quit")) {
            break;
        }
        if (!strcmp(sendmsg, "quit server")) {
            break;
        }
     
        if (read(sockfd, recvmsg, MAXSIZE) < 0) {
            printf("recv msg failed!\n");
            break;
        }
         /*
        if (recv(sockfd, recvmsg, MAXSIZE, 0) < 0) {
            printf("recv msg failed!\n");
            break;
        }
         */
        printf("server:\n%s\n", recvmsg);
    }

    printf("\nclose connection!\n\n");
    close(sockfd);
   
    return 0;
}