private async Task PushNotifyInboxMessageGoogleAsync(InboxEntity inbox) { if (!string.IsNullOrEmpty(inbox.GoogleCloudMessagingRegistrationId)) { var notifications = new GooglePushNotifications(this.HttpClient, ConfigurationManager.AppSettings["GoogleApiKey"], inbox.GoogleCloudMessagingRegistrationId); bool invalidChannel = false; try { bool successfulPush = await notifications.PushGoogleRawNotificationAsync(CancellationToken.None); invalidChannel |= !successfulPush; } catch (HttpRequestException) { invalidChannel = true; } if (invalidChannel) { inbox.GoogleCloudMessagingRegistrationId = null; this.InboxTable.UpdateObject(inbox); } } }