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

#define MAX 8000
#define PORTA 666
#define MAX_CON 100

int main(void) {

    char buff[MAX];
    struct sockaddr_in server;
    struct sockaddr_in client;
    int sd, temp_sd;
    int address_size;
	unsigned short port = 666;

    if ( (sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
        printf("Errore nella creazione del server!\n");

    server.sin_family = AF_INET;
    server.sin_port = htons(port);
    server.sin_addr.s_addr = INADDR_ANY;

    if (bind(sd, (struct sockaddr *)&server, sizeof(server)) < 0)
        printf("Errore nella chiamata di sistema BIND!\n");

	listen (sd, MAX_CON);

    while(1) {

		if ((temp_sd= accept(sd, (struct sockaddr *)&client, &address_size)) < 0)
            printf("Errore nella chiamata ACCEPT\n");

			while(1) {
			recv(temp_sd, buff, sizeof(buff), 0);
			printf("C>%s\nS>", buff);
			scanf("%s", buff);
			send(temp_sd, buff, strlen(buff), 0);
			}


	close(temp_sd);
	}

    return EXIT_SUCCESS;
}