void net_client_connect (NetClient *client, NetClientConnection *connection)
{
struct sockaddr_in address;
int result;
int i;
if (!client) {
error_code (InvalidArgument, 1);
return;
}
if (!connection) {
error_code (InvalidArgument, 2);
return;
}
if (inet_pton (AF_INET, connection->ip, &address.sin_addr) != 1) {
error_code (SystemCall, 1);
worker_connect_error (client, connection);
return;
}
address.sin_family = AF_INET;
address.sin_port = htons (connection->port);
if ((connection->socket = socket (AF_INET,
SOCK_STREAM | SOCK_NONBLOCK,
0)) == -1) {
error_code (SystemCall, 2);
worker_connect_error (client, connection);
return;
}
for (i = 0; i < 3; i++) {
result = connect (connection->socket,
(struct sockaddr *)&address,
sizeof (struct sockaddr));
if (result == 0) {
worker_connect (client, connection);
return;
}
if (result == -1 && (errno == EINPROGRESS || errno == EWOULDBLOCK)) {
/* Obscure epoll bug can cause EPOLLOUT+EPOLLHUP if epoll_ctl is
* done before a connect, so we do it after connect.
* To reproduce, just move this line before the for loop and run
* the test with 1-10 iterations.
*/
if (!net_client_epoll_monitor (client->epoll,
connection->socket,
connection)) {
error_code (FunctionCall, 1);
worker_connect_error (client, connection);
return;
}
return;
}
if (result == -1 && errno == EINTR) {
continue;
}
break;
}
error_code (SystemCall, 2);
worker_connect_error (client, connection);
return;
}
App::App(const Wt::WEnvironment& env)
: Wt::WApplication(env)
{
setTheme(new Wt::WBootstrapTheme());
useStyleSheet("style.css");
root()->addWidget(config_wdgt = new Config_wdgt(session));
root()->addWidget(new Wt::WBreak());
root()->addWidget(stat_wdgt = new Stat_wdgt(session));
root()->addWidget(new Wt::WBreak());
root()->addWidget(line_wdgt = new Line_wdgt(session));
root()->addWidget(new Wt::WBreak());
root()->addWidget(prog_wdgt = new Prog_wdgt(session));
enableUpdates(true);
worker_connect(this);
}
static void worker (Thread *thread)
{
NetClient *client = thread->argument;
NetClientEpollEvent event;
int count;
int i;
while (net_client_epoll_events_count (client->epoll, &count)) {
for (i = 0; i < count; i++) {
event = net_client_epoll_event (client->epoll, i);
if (event.stop) {
return;
}
else if (event.connect) {
worker_connect (client, event.pointer);
}
else {
worker_connect_error (client, event.pointer);
}
}
}
client->on_error (client);
return;
}
