int main(int argc, char** argv)
{
Connection *server = NULL;
Client *client = NULL;
fd_set readf;
int maxfd;
int server_socket;
int client_fd;
int i;
int ready;
int amount;
args_parse(argc, argv);
if (_s_server_port < 0 || _s_server_port > 65535) {
_s_server_port = SERVER_PORT;
}
if (_s_con_type == TCP) {
info("Server will use TCP connection.");
} else if (_s_con_type == UDP) {
info("Server will use UDP connection.");
} else {
fatal("You should provide connection type.");
}
server = connection_server_create(_s_con_type, "0.0.0.0", _s_server_port,
MAX_AMOUNT_CLIENTS);
server_socket = connection_get_fd(server);
_s_clients = vector_create();
info("Server has started on port '%d'.", _s_server_port);
info("Allowed commands:"
"\n\t1) _who"
"\n\t2) _kill <name>"
"\n\t3) _shutdown");
_s_runing = 1;
while(_s_runing) {
FD_ZERO(&readf);
maxfd = server_socket;
if (connection_get_type(server) == TCP) {
for (i = 0; i < vector_total(_s_clients); ++i) {
client = vector_get(_s_clients, i);
client_fd = connection_get_fd(client->conn);
FD_SET(client_fd, &readf);
if (client_fd > maxfd) {
maxfd = client_fd;
}
}
}
FD_SET(server_socket, &readf);
FD_SET(0, &readf);
ready = select(maxfd + 1, &readf, 0, 0, 0);
/* read data from user terminal */
if (FD_ISSET(0, &readf)) {
receive_user_data();
if (--ready <= 0) {
/* no more descriptors for handling */
continue;
}
}
/* got something on server connection */
if (FD_ISSET(server_socket, &readf)) {
/* new client connection */
handle_server_event(server);
if (--ready <= 0) {
/* no more descriptors for handling */
continue;
}
}
if (connection_get_type(server) == TCP) {
/* read data from clients */
amount = vector_total(_s_clients);
for (i = 0; i <= amount; ++i) {
/* check all clients for data */
client = vector_get(_s_clients, i);
if (client == NULL) {
assert("Client is NULL" == NULL);
continue;
}
if (FD_ISSET(connection_get_fd(client->conn), &readf)) {
receive_tcp_client_data(client);
if (--ready <= 0) {
/* no more descriptors for handling */
break;
}
}
}
}
}
info("Close all sockets and removing all clients...");
close(server_socket);
amount = vector_total(_s_clients);
for (i = 0; i <= amount; ++i) {
if ((client = vector_get(_s_clients, i)) != NULL) {
close(connection_get_fd(client->conn));
client_destroy(client);
};
}
vector_free(_s_clients);
info("Done.");
}
int main(int argc, char *argv[])
{
int sfd, n;
struct sockaddr_in servaddr;
sfd = socket(AF_INET, SOCK_STREAM, 0);
if (sfd < 0) {
printf("Socket could not be created!\n");
exit(1);
}
fd_handlers_add(sfd);
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(5000);
n = bind(sfd, (struct sockaddr *) &servaddr, sizeof(servaddr));
if (n != 0) {
perror("bind");
exit(1);
}
if(listen(sfd, 10) != 0) {
perror("listen");
}
printf("Start listening...\n");
for (;;) {
int rv;
fd_set rfds;
/* build fd set */
fd_handlers_build_fd_set(&rfds);
/* get max fd */
int max_fd = fd_handlers_get_max_fd(&rfds);
/* with select we look at all the read file descriptors */
rv = select(max_fd + 1, &rfds, NULL, NULL, NULL);
if (rv < 0) { /* select error! */
perror("select");
} else if (rv > 0) { /* something happened! */
int i;
printf("Data is available now.\n");
for(i = 0; i < MAX_FD_HANDLERS; i++) {
if(fd_handlers[i] == 0)
continue;
/* FD_ISSET returns true if something happened on the file descriptor which
*the select function noticed, false otherwise */
if(FD_ISSET(fd_handlers[i], &rfds)) {
if (fd_handlers[i] == sfd) {
/* handle new incoming connection with accept*/
handle_server_event(sfd);
} else { /* handle client request */
handle_client_event(fd_handlers[i]);
}
}
}
}
}
close(sfd);
return 0;
}
