#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>

#define MAX 1024 // max number of bytes we can get at once 


int main(int argc, char **argv)
{
  unsigned short int port = 0;
  int sockfd = -1;
  char buffer[MAX + 1];
  char myname[MAX + 1];
  struct hostent *serverHE = NULL;
  struct sockaddr_in server_addr; // connector's address information 

  if (argc != 3) 
    { 
      fprintf(stderr, "usage: %s host port\n", argv[0]);
      return -1;
    }

  gethostname(myname, MAX);

  port = atoi(argv[2]);
  
  serverHE = gethostbyname(argv[1]);

  printf("Connection:\n  From\t%s\n  To\t%s port %d\n", 
	 myname, serverHE->h_name, port);

  memset(&(server_addr), 0, sizeof(struct sockaddr_in));

  server_addr.sin_family = AF_INET;
  server_addr.sin_port = htons(port);
  server_addr.sin_addr = *((struct in_addr *)serverHE->h_addr_list[0]);

  printf("  Server IP address %s\n", inet_ntoa(ntohl(server_addr.sin_addr)));

  sockfd = socket(AF_INET, SOCK_STREAM, 0);
  connect(sockfd, 
	  (struct sockaddr *)&server_addr, 
	  sizeof(struct sockaddr_in));

  recv(sockfd, buffer, MAX, 0);
  
  printf("\n%s said: %s\n", argv[1], buffer);  
  close(sockfd);
}