#include <stdio.h>
 
/* no need to give comment for this headerif anyone doesn't know  abt stdio.h he/she should not programming in C*/

#include <stdlib.h>
#include <sys/types.h> /* standard system types */
#include <sys/socket.h> /* socket interface functions */
#include <netinet/in.h> /* socket struct and Internet Protocol family proto */
#include <netdb.h> /* host to IP resolution */
#include <unistd.h>  
#include <errno.h>  /* for errno and error codes */
#include <string.h>
#include <arpa/inet.h> /* for inet_addr */

#define portno 6789 /* default port and host */
#define MAXDATASIZE 100 /* max number of bytes */


void error(char *msg)
{
perror(msg);
exit(0);
}

int main(int argc, char *argv[])
{
int serversocket, numbytes;
struct sockaddr_in serv_addr;
struct hostent *server;
char buffer[MAXDATASIZE];
int rc;

if (argc < 3)
{
fprintf(stderr,"Missing host name\n", argv[0]);
/*exit(0);*/
}


serversocket = socket(AF_INET, SOCK_STREAM, 0);


if (serversocket <0)
{
perror("socket");
exit(1);
}


/*server = gethostbyname("152.15.92.168");
if (server == NULL)
{
perror("gethostbyname");
exit(1);
}*/
//no need to call gethostbyname if we know ip address although we can do it like this 

serv_addr.sin_family = AF_INET;
/*bcopy((char *)server->h_addr,
(char *)&serv_addr.sin_addr.s_addr,
server->h_length);*/
serv_addr.sin_port = htons(portno);
/*serv_addr.sin_addr = *((struct in_addr
*)server->h_addr);*/
serv_addr.sin_addr.s_addr = inet_addr("152.15.92.168");
memset(&(serv_addr.sin_zero), '\0', 8); // zero the
rest of the struct

rc = connect(serversocket, (struct sockaddr
*)&serv_addr,sizeof(serv_addr)) ;
//if(rc)

if(rc == -1 )
{
perror("connect");
exit(1);
}

if ((numbytes=recv(serversocket, buffer,
MAXDATASIZE-1, 0)) == -1)
{
perror("recv");
exit(1);
}

buffer[numbytes] = '\0';
printf("Received: %s",buf);
//write( 1, buffer,numbytes );

close(serversocket);
return 0;
}


/*n = send(mysocket,buffer,strlen(buffer),0);

if (n < 0)
error("ERROR writing to socket");

n = read(mysocket,buffer,sizeof(buffer)-1); 
if (n < 0)
error("ERROR reading from socket");

buffer[n]='\0'; 

close(mysocket);

printf("%s\n",buffer);

return 0;
}*/