/* dgsend.c */

/* Send a datagram without using a connected socket */

#define begin {
#define end   }

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

char buf[1024*64] = "This is some data";

struct hostent *hp;
struct hostent *gethostbyname();
struct sockaddr_in name;

main(argc, argv)
int argc;
char *argv[];
begin
   int i;
   unsigned char c;
   int sock;
   int status;
   int msglen;

   sock = socket(AF_INET, SOCK_DGRAM, 0);
   if (sock < 0)
   begin
      printf("Socket create failed \n");
      exit(1);
   end

   hp = gethostbyname(argv[1]);
   if (hp == 0)
   begin
      printf("Host %s not found\n", argv[1]);
      exit(1);
   end

   bcopy((char *)hp->h_addr, (char *)&name.sin_addr, hp->h_length);

   printf("Length = %d | Addr = ", hp->h_length);

   for (i = 0; i < hp->h_length; i++)
   begin
      c = *((char *)&name.sin_addr + i);
      printf(" %2x", c);
   end
   printf("\n");

   name.sin_family = AF_INET;
   name.sin_port = htons(atoi(argv[2]));
   msglen = atoi(argv[3]);

   status = sendto(sock, buf, msglen, 0,
               (struct sockaddr *)&name, sizeof(name));

   printf("status = %d \n", status);
end