/*
 * skeleton.c
 *
 * CS 3251 Programming Assignment 1, Client Skeleton 
 *
 * $Id: skeleton.c,v 1.1 1999/10/29 17:46:57 ewz Exp $
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>  /* for sockaddr_in */
#include <string.h> 
#include <errno.h>  /* for perror() */
#include <netdb.h>  /* for hostent and gethostbyname() */

/* structure of sockaddr_in, defined in netinet/in.h:
struct sockaddr_in {
        short   sin_family;
        u_short sin_port;
        struct  in_addr sin_addr;
        char    sin_zero[8];
};
*/


#define SRVPORT 13251    /* server port number */
#define SRVADDR "130.207.8.20"  /* IP addr for flora.cc.gatech.edu */

#define ID   "ewz@cc.gatech.edu"

#define MSIZE 256
#define BUFSIZE 128

/*
 * Report error on system call and exit.
 */
void syserror(char *s)
{
  perror(s);
  exit(1);
}

/*
 * Get current time and convert to human readable form.
 * (from KLC)
 */
char * getTime()
{
  struct timeval myTime;
  struct tm *myTimP;

  gettimeofday(&myTime,(struct timezone *)NULL);
  myTimP = localtime((time_t *)&myTime.tv_sec);
  return asctime(myTimP);
}

/* Convert a struct sockaddr_in into <dottedquad>-<port> 
 * string notation.  Assumes addresses are in network byte order.
 * Don't forget to convert to host byte order!
 */
void sockAddrToString(char *string, struct sockaddr_in *ss)
{
  /* your code goes here */
}

/*
 * Main routine.
 */
int main(int argc, char *argv[])
{
  int cSocket;
  struct sockaddr_in sAddr, cAddr;
  int sizeofcAddr, sizeofsAddr;
  char sMsg[MSIZE],cMsg[MSIZE];
  char caddrbuf[BUFSIZE], saddrbuf[BUFSIZE];
  u_short port;
 
  /* CREATE A SOCKET */
  /* your code goes here */
  /* don't forget to check for errors in return code for all sys calls */


  /* SET UP ADDRESS INFORMATION FOR SERVER IN SADDR */
  /* your code goes here */
  /* it's a good idea to zero out the structure first */
  /* don't forget to convert from host to network byte order */


  /* CONNECT TO SERVER USING SADDR INFORMATION */
  /* your code goes here */


  /* RECORD TIME OF SUCCESSFUL CONNECTION */
  printf("Connected to server at time %s\n",getTime());
  
  /* CONSTRUCT MESSAGE TO SEND TO SERVER */
  /* FIRST contruct string for client IP address and port in cAddr */
  /* your code goes here */
  /* use getsockname() and sockAddrToString() */


  /* NEXT contruct string for server IP address and port in sAddr */
  /* your code goes here */
  /* use getpeername() and sockAddrToString() */
  /* note: this should be the same as SRVADDR-SRVPORT, letting you */
  /*       check whether sockAddrToString works correctly */


  /* FILL IN CLIENT MESSAGE */
  /* your code goes here */
  /* it's a good idea to zero out cMsg before filling it in */


  /* SEND MESSAGE */
  /* your code goes here */


  /* GET REPLY, FIRST GREETING THEN RANDOM NUMBER */
  /* your code goes here */


  /* CLOSE CONNECTION */
  /* your code goes here */


} /* main */