/**
* This function will initialize the connection and stuff
*/
void init_process() {
signal(SIGCHLD, SIG_IGN);
memset(client_udp_ports, 0, sizeof(client_udp_ports));
//4. Create shared memory area with the child processes.
// REUSED CODE :- http://www.tldp.org/LDP/lpg/node81.html
//--START
key_t key;
/* Create unique key via call to ftok() */
key = ftok("./test", 'S');
if ((shmid = shmget(key, SEGSIZE, IPC_CREAT | 0666)) < 0) {
perror("shmget");
exit(1);
}
/* Attach (map) the shared memory segment into the current process */
if ((segptr = (char *) shmat(shmid, NULL, 0)) == (char *) -1) {
perror("shmat");
exit(1);
}
//--END
//3. set up TCP server at manager
tcp_serv_sock_fd = create_tcp_socket();
populate_sockaddr_in(&client_tcp_server, "localhost", 0);
if (bind_address(tcp_serv_sock_fd, client_tcp_server) < 0) {
perror("Error biding the address to socket. Exiting!!");
exit(0);
}
//get the port number information
socklen_t size = sizeof(tmp);
if (getsockname(tcp_serv_sock_fd, (struct sockaddr *) &tmp, &size) < 0) {
perror("Error getting port number information!!");
exit(0);
}
//listen for incomming connections
listen(tcp_serv_sock_fd, BACKLOG_QUEUE);
//5. Put manager's port # in shared memory so that child processes and use it to connect the manager (server) socket
//writeshm(segptr, temp);
sprintf(segptr, "%u", ntohs(tmp.sin_port));
printf("init_process: data set in shared memory is: %s\n", segptr);
}
/**
* Handle HELLO-message.
*
* @param cls closure
* @param client identification of the client
* @param message the actual message
*/
static void
handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
const struct GNUNET_HELLO_Message *hello;
struct GNUNET_PeerIdentity pid;
hello = (const struct GNUNET_HELLO_Message *) message;
if (GNUNET_OK != GNUNET_HELLO_get_id (hello, &pid))
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' message received for peer `%4s'\n",
"HELLO", GNUNET_i2s (&pid));
bind_address (&pid, hello);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
void listen_server_init(char *ip_address, int port)
{
int sockfd;
struct sockaddr_in address;
sockfd = create_socket();
print_message("Socket created\n");
set_socket_options(sockfd);
bind_address(sockfd, ip_address, port);
print_message("Socket bind to address\n");
listen(sockfd, MAX_PENDING_CONNECTIONS);
print_message("Listening...\n");
handle_clients(sockfd);
shutdown(sockfd, 2);
}
