/*****************************************************************
		Module d'utilisation d'un socket UDP sur Unix

		Stevens Gagnon
		Departement Informatique
		College Shawinigan

******************************************************************/

#define MAX_BUFFER 100

// ---- Parametres specifique au serveur

#define ADR_SERVER	"172.16.83.129"		// "INADDR_ANY" ou "192.168.2.2"
#define PORT_NET  2083              /* Port sur lequel le serveur attend */

//----------------------------------------------------------------

#include "sg_udp.h"

//---------------------------------------------------------------- main


int main(void)
{
	int serveur;
	int lg_rx, lg_out, lg_tx;
	socklen_t paq_lg;

	struct sockaddr_in server, repondant;

	char    buffer_in[MAX_BUFFER + 1],
		buffer_out[MAX_BUFFER + 1];


	client = setup_udp_client();
	server = find_udp_server(ADR_SERVER, PORT_NET);

	if (serveur != -1)
	{
		buffer_out[0] = 'A';
		if ((lg_tx = sendto(serveur, buffer_out, lg_out, 0, (struct sockaddr *)&client, paq_lg)) < 0)
		{
			perror("ERREUR sendto");
			exit(EXIT_FAILURE);
		}
		printf("Connecter");
		paq_lg = sizeof(struct sockaddr_in);
		bzero(buffer_in, MAX_BUFFER);

		if ((lg_rx = recvfrom(serveur, buffer_in, MAX_BUFFER, 0, (struct sockaddr *)&client, &paq_lg)) < 0)
		{
			perror("ERREUR recvfrom");
			exit(EXIT_FAILURE);
		}
		else
		{
			printf("\n--------------------------------------------------------------------------\n\n");

			FILE *fichier;
			if ((fichier = fopen("prog", "w")) == NULL)
			{
				printf("--------------------- Probleme de fichier\n");
			}
			else
			{
				fprintf(fichier, "%1c", lg_rx);
			}


			buffer_in[lg_rx] = 0;
			printf("Le serveur a recu %i bytes ==>>%s<<==\n\n", lg_rx, buffer_in);

			bzero(buffer_out, MAX_BUFFER);
			snprintf(buffer_out, MAX_BUFFER, ")%s(", buffer_in);
			lg_out = strlen(buffer_out);

			printf("Le serveur va transmettre %i bytes ==>>%s<<==\n\n", lg_out, buffer_out);

			printf("\n--------------------------------------------------------------------------\n\n");
		}
	}
}