Version 4.7.8

system/Notification/Notification.php

@@ -1103,9 +1103,18 @@ class _Notification
 
 			$headers['Content-Length'] = \Minishlink\WebPush\Utils::safeStrlen($content);
 			$headers['Authorization'] = $vapidHeaders['Authorization'];
-
-			// Step 8: Send the damn thing
-			$response = $endpoint->request()->setHeaders( $headers )->post( $content );
+			
+			try
+			{
+				// Step 8: Send the damn thing
+				$response = $endpoint->request()->setHeaders( $headers )->post( $content );
+			}
+			catch( \IPS\Http\Request\Exception $e )
+			{
+				/* If the request failed (DNS issues, etc.). Log it and move on. */
+				\IPS\Log::log( $e, 'pwa_notification' );
+				continue;
+			}
 
 			// Step 9: Check the response - 404/410 indicates a permanent problem, so delete that key
 			if( \in_array( $response->httpResponseCode, array( 404, 410 ) ) )