int send_recv(int sock, const char *name)
{
int to = 100;
assert(nn_setsockopt (sock, NN_SOL_SOCKET, NN_RCVTIMEO, &to, sizeof (to)) >= 0);
while(1)
{
recv_name(sock, name);
sleep(1);
send_name(sock, name);
}
}
/* Distribute keys */
int distribute_key (void) {
int result;
golle_num_t temp = golle_num_new ();
if (!temp) {
fprintf (stderr, "Memory error\n");
return 1;
}
result = h_to_bin (key.h);
if (result != 0) {
return result;
}
/* Send name to opponent */
result = send_name (opponent);
if (result != 0) {
return result;
}
/* Receive name from opponent */
result = recv_name (opponent, opponent_name);
if (result != 0) {
return result;
}
printf ("Opponent's name is '%s'\n", opponent_name);
/* Send h to opponent */
result = send_h (opponent);
if (result != 0) {
return result;
}
/* Receive h from opponent */
result = recv_h (opponent, temp);
if (result != 0) {
return result;
}
printf ("Received h from %s\n", opponent_name);
golle_error err = golle_key_accum_h (&key, temp);
if (err != GOLLE_OK) {
result = (int)err;
fprintf (stderr, "H value accumulation failed.\n");
}
golle_bin_clear (&hbin);
golle_num_delete (temp);
printf ("Key is distributed.\n");
return result;
}
/* Connect and talk to the server */
int
main()
{
struct sockaddr_in server;
struct hostent *host;
int s;
/* Create an Internet family, stream socket */
s = socket(AF_INET, SOCK_STREAM, 0);
/* Did that work? */
if (s < 0) {
perror("socket()");
exit(EXIT_FAILURE);
}
/* We are running the server on localhost for the minute */
if ((host = gethostbyname("localhost")) == NULL) {
perror("gethostbyname()");
exit(EXIT_FAILURE);
}
/* Fill in the socket address structure */
memset((char *)&server, '\0', sizeof (server));
server.sin_family = AF_INET;
server.sin_port = htons(PORTNUM);
memcpy((char *)&server.sin_addr, host->h_addr_list[0], host->h_length);
/* Connect to the server */
if (connect(s, (struct sockaddr *)&server, sizeof (server)) < 0) {
perror("connect()");
exit(EXIT_FAILURE);
}
/* Send our name first */
send_name(s);
/* Now send a message */
send_message(s);
/* Close the socket */
close(s);
return (0);
}
void ini_network()
{
SDL_Thread *thread_network;
int numbytes;
char buf[256];
struct hostent *he;
struct sockaddr_in their_addr; // connectorâÂÂs address information
//printf("servidor:");
//scanf("%s",buf);
if ((he=gethostbyname(sserver)) == NULL) { // get the host info
perror("gethostbyname");
exit(1);
}
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(1);
}
their_addr.sin_family = AF_INET; // host byte order
their_addr.sin_port = htons(PORT); // short, network byte order
their_addr.sin_addr = *((struct in_addr *)he->h_addr);
memset(&(their_addr.sin_zero), '\0', 8); // zero the rest of the struct
if (connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == -1) {
perror("connect");
exit(1);
}
if ((numbytes=recv(sockfd, buf, 256-1, 0)) == -1) {
perror("recv");
exit(1);
}
buf[numbytes] = '\0';
printf("Received: %s",buf);
sscanf(buf,"wellcome:%d",&(pj->id));
send_name();
thread_network = SDL_CreateThread (network, NULL);
}
/* ip_addr is now in network byte order
*
* first we have to get hold of the portnumber to
* the node through epmd at that host
*
*/
int ei_xconnect_tmo(ei_cnode* ec, Erl_IpAddr adr, char *alivename, unsigned ms)
{
struct in_addr *ip_addr=(struct in_addr *) adr;
int rport = 0; /*uint16 rport = 0;*/
int sockd;
int one = 1;
int dist = 0;
ErlConnect her_name;
unsigned her_flags, her_version;
erl_errno = EIO; /* Default error code */
EI_TRACE_CONN1("ei_xconnect","-> CONNECT attempt to connect to %s",
alivename);
if ((rport = ei_epmd_port_tmo(ip_addr,alivename,&dist, ms)) < 0) {
EI_TRACE_ERR0("ei_xconnect","-> CONNECT can't get remote port");
/* ei_epmd_port_tmo() has set erl_errno */
return ERL_NO_PORT;
}
/* we now have port number to enode, try to connect */
if((sockd = cnct((uint16)rport, ip_addr, sizeof(struct in_addr),ms)) < 0) {
EI_TRACE_ERR0("ei_xconnect","-> CONNECT socket connect failed");
/* cnct() has set erl_errno */
return ERL_CONNECT_FAIL;
}
EI_TRACE_CONN0("ei_xconnect","-> CONNECT connected to remote");
/* FIXME why connect before checking 'dist' output from ei_epmd_port() ?! */
if (dist <= 4) {
EI_TRACE_ERR0("ei_xconnect","-> CONNECT remote version not compatible");
goto error;
}
else {
unsigned our_challenge, her_challenge;
unsigned char our_digest[16];
if (send_name(sockd, ec->thisnodename, (unsigned) dist, ms))
goto error;
if (recv_status(sockd, ms))
goto error;
if (recv_challenge(sockd, &her_challenge, &her_version,
&her_flags, &her_name, ms))
goto error;
our_challenge = gen_challenge();
gen_digest(her_challenge, ec->ei_connect_cookie, our_digest);
if (send_challenge_reply(sockd, our_digest, our_challenge, ms))
goto error;
if (recv_challenge_ack(sockd, our_challenge,
ec->ei_connect_cookie, ms))
goto error;
put_ei_socket_info(sockd, dist, null_cookie, ec); /* FIXME check == 0 */
}
setsockopt(sockd, IPPROTO_TCP, TCP_NODELAY, (char *)&one, sizeof(one));
setsockopt(sockd, SOL_SOCKET, SO_KEEPALIVE, (char *)&one, sizeof(one));
EI_TRACE_CONN1("ei_xconnect","-> CONNECT (ok) remote = %s",alivename);
erl_errno = 0;
return sockd;
error:
EI_TRACE_ERR0("ei_xconnect","-> CONNECT failed");
closesocket(sockd);
return ERL_ERROR;
} /* ei_xconnect */
int main(int argc, char *argv[]) {
const int num_args = 7;
char name[NAME_LEN + 1], host[HOST_LEN + 1], port[PORT_LEN + 1];
int ch;
if (argc != num_args) { return usage(); }
while ((ch = getopt(argc, argv, "n:h:p:")) != -1) {
switch (ch) {
case 'n': { strncpy(name, optarg, NAME_LEN); break; }
case 'h': { strncpy(host, optarg, HOST_LEN); break; }
case 'p': { strncpy(port, optarg, PORT_LEN); break; }
default: { return usage(); }
}
}
if (optind != num_args) { return usage(); }
name[NAME_LEN] = '\0';
host[HOST_LEN] = '\0';
port[PORT_LEN] = '\0';
signal(SIGINT, &quit_game);
int sock = get_socket(host, port);
if (sock == -1) {
fprintf(stderr, "async: could not connect to `%s:%s`\n", host, port);
return 1;
}
int sp = dup(sock);
printf("%d\n", sp);
pp = fdopen(sp, "r");
printf("%p\n", pp);
FILE *io = fdopen(sock, "r+");
if (io == NULL) {
fprintf(stderr, "async: could not open socket\n");
return 1;
}
game.io = io;
game.name = malloc(sizeof(char) * (strlen(name) + 1));
strcpy(game.name, name);
printf("async: joining server `%s:%s` with name `%s`\n",
host, port, game.name);
if (!send_name()) {
fprintf(stderr, "async: could not send name to server\n");
return 1;
}
if (!receive_id()) {
fprintf(stderr, "async: could not receive player id from server\n");
return 1;
}
if (!download_map()) {
fprintf(stderr, "async: could not download map\n");
return 1;
} else {
printf("async: downloaded map, `%lu` bytes\n", strlen(game.map));
}
game.player_loc.x = game.width / 2;
game.player_loc.y = game.height / 2;
game.player_dir = NORTH;
pthread_create(&listener_thread, NULL, &game_listener, NULL);
pthread_detach(listener_thread);
run_game();
return 0;
}
void Button::emit_name()
{
emit send_name(this->name);
}