client-select.cpp

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

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

int main()
{
    int sockfd;
    int len;
    struct sockaddr_in address;
    int result;
    char ch[50] = "ABCDEFGHIJKQWERTYUIOP";

/*  Create a socket for the client.  */

    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_port = htons(10002);
    len = sizeof(address);

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

    result = connect(sockfd, (struct sockaddr *)&address, len);

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


/*  We can now read/write via sockfd.  */
    //for(int i=0; i< 10; i++)
    while(1)
    {
        unsigned char send_buf[2] = {0xa6,0x51};
    	write(sockfd, &send_buf, 50);

    	read(sockfd, &ch, 50);
    	printf("char from server = %s\n", ch);
    	sleep(1);
    }
    close(sockfd);
    exit(0);
}