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

#define MAX_CHAR 256

int main()
{
   int ID_socket_ser, result, long_cli;
   struct sockaddr_in address_ser, address_cli;
   char mensaje[MAX_CHAR];

   printf("Probando sockets UDP (servidor)\n");

   printf("Creando socket... ");
   ID_socket_ser=socket(AF_INET, SOCK_DGRAM,0);
   if (ID_socket_ser==-1)
   {
      printf("error\n");
      exit(-1);
   }
   else
   {
      printf("ok\n");
   }

   printf("Haciendo bind local... ");
   address_ser.sin_family = AF_INET;
   address_ser.sin_addr.s_addr = htonl(INADDR_ANY);
   address_ser.sin_port = htons(6000);

   result = bind(ID_socket_ser, (struct sockaddr *) &address_ser, sizeof(address_ser));
   if (result<0) {
      printf("error\n");
      exit(-1);
   }
   else
   {
      printf("ok\n");
   }

   long_cli = sizeof(address_cli);
   printf("Recibiendo mensajes:\n");

   do {
	   memset(mensaje,0x0,MAX_CHAR);
	   result = recvfrom(ID_socket_ser, mensaje, MAX_CHAR, 0, 
			   (struct sockaddr *) &address_cli, 
			   &long_cli);
	   if (result<0) {
		   printf("error\n");
		   exit(-1);
	   }
	   else
	   {
		   printf("%s\n",mensaje);
	   }
   } while(strncmp(mensaje,"fin",3));


   return 0;

}