client-thread.cpp

/*  Make the necessary includes and set up the variables.  */

#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <signal.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdlib.h>
#include <cstring>

int main()
{
    int server_sockfd;
    int len;
    struct sockaddr_in address;
    int ret;
    char read_buf[10];

/*  Create a socket for the client.  */

    server_sockfd = socket(AF_INET, SOCK_STREAM, 0);

/*  Name the socket, as agreed with the server.  */

    address.sin_family = AF_INET;
    //address.sin_addr.s_addr = inet_addr("127.0.0.1"); 
    address.sin_addr.s_addr = inet_addr("192.168.0.14"); 
    address.sin_port = htons(10006);
    len = sizeof(address);

/*  Now connect our socket to the server's socket.  */

    ret = connect(server_sockfd, (struct sockaddr *)&address, len);
    if(ret < 0)
    {
        printf("\t *** socket client connect() error!\n");
    }
    printf("client is connected with server_sockfd = %d\n", server_sockfd);

    if(ret == -1) 
    {
        perror("oops: client3");
        exit(1);
    }

    //signal(SIGPIPE, SIG_IGN);

/*  We can now read/write via server_sockfd.  */
    while(1)
    {   
        memset(&read_buf, 0, sizeof(read_buf));
        ret = read(server_sockfd, &read_buf, 10);
        if(ret < 0)
        {
            printf("\t *** socket client read() error!\n");
        }
        else
        {
            printf("client-rcvd msg: %s\n", read_buf);
        }
	    
        unsigned char send_buf[2] = {0xa6, 0x51};
        ret = write(server_sockfd, &send_buf, 2);
        if(ret < 0)
        {
            printf("\t *** socket client read() error!\n");
        }
    }
    close(server_sockfd);
    exit(0);
}