private async Task _receiveResponceAsync()
{
byte[] msg = null;
List <Notification> notifications;
try {
msg = await _connection.Receive(6, true);
lock (_lockObject) {
notifications = _notifications;
_notifications = null;
}
_close();
}
catch (Exception err) {
bool connected;
lock (_lockObject) {
notifications = _notifications;
_notifications = null;
connected = _connection != null;
_close();
}
if (connected)
{
Service.Error(new PushNotificationServiceException("Receive response from APNS failed.", err));
}
}
if (msg != null && msg[0] == 0x08)
{
var ni = (msg[2] << 24) | (msg[3] << 16) | (msg[4] << 8) | (msg[5]);
if (ni >= 0 && ni == _notificationIdentifier - 1 && notifications[ni] == null)
{
notifications = null;
}
else
{
if (ni >= 0 && ni < _notificationIdentifier)
{
var n = notifications[ni];
if (n != null)
{
Service.Error((msg[1] == 0x08)
? new PushNotificationInvalidDeviceException(n)
: new PushNotificationException(n, "Submit notification to '" + n.DeviceAddress + "' failed error #" + msg[1] + "."));
}
}
for (int i = 0; i <= ni && i < _notificationIdentifier; ++i)
{
notifications[i] = null;
}
}
Service.ConnectionClosed(this, notifications);
}
else
{
Service.NotificationDropped(notifications, new Exception("Connection dropped by APSN."));
Service.ConnectionClosed(this);
}
}