#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

/* Global valiables */

struct sockaddr_in client_addr; // write socket

/*
        Connect to Server
*/

int     ConnectServer(char *ipaddr, int port)
{
int     sockfd;         // Listen Socket File Descripter

if(0 > (sockfd = socket(PF_INET, SOCK_STREAM,0))) // Make Socket
        {
        perror("reader: socket");
        return (-1);
        }

bzero((char *)(&client_addr),sizeof(client_addr));      // clear struct for read
client_addr.sin_family = PF_INET;                       // set value to struct
client_addr.sin_addr.s_addr = inet_addr(ipaddr);       // set value to struct
client_addr.sin_port = htons(port);                     // set value to struct

if(0 > connect(sockfd,(struct sockaddr *)(&client_addr),sizeof(client_addr)))
        {
        perror("Client: Cannot Connect\n");
        close(sockfd);
        return (-1);
        }

return sockfd;
}

/*
        Send Data to Server
*/

int     SendDataToServer(int fd,char *data,int datalen)
{
if(0 > write(fd,data,datalen))
        {
        perror("Client: Cannot Send.\n");
        close(fd);
        return (-1);
        }

return datalen;
}