/* CLISERVER - SERVER CONNESSION LESS SU INTERNET */

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

#define BUFSZ	256
#define DATA "012345678901234567890123456789..."

main()
{
	int sock, length, flength,i;
	struct sockaddr_in name, fromname;
	int buf[BUFSZ];

	if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
		perror("server:socket");
		exit(1);
	}

	name.sin_family = AF_INET;
	name.sin_addr.s_addr = INADDR_ANY;
/*	name.sin_port =0;			*/
	name.sin_port =htons(2000);

	length = sizeof(name);
	
	fromname.sin_family = AF_INET;
	fromname.sin_addr.s_addr = INADDR_ANY;
	fromname.sin_port =0;
	flength = sizeof(fromname);
		
	if (bind(sock, &name, sizeof name) < 0) {
		perror("server: bind");
		exit(1);
	}

 	printf("socket port #%d\n", ntohs(name.sin_port));
	
	i = 0;
	while (1) {
	
	if (recvfrom(sock,buf, sizeof(buf),0, &fromname, &flength) < 0)
		perror("receiving datagram pocket");

	i++;
	buf[2] = i;
	if (sendto(sock,buf, sizeof(buf),0, 
                        (struct sockaddr*)&fromname,sizeof fromname) < 0)
			perror("sending datagram pocket");
	
	}
	close(sock);
	exit(0);
}