Add ability to set backoff in broadcast events (#42737)

Author: jpbalda

src/Illuminate/Broadcasting/BroadcastEvent.php

@@ -35,6 +35,13 @@ class BroadcastEvent implements ShouldQueue
      */
     public $timeout;
 
+    /**
+     * The number of seconds to wait before retrying a job that encountered an uncaught exception.
+     *
+     * @var int
+     */
+    public $backoff;
+
     /**
      * Create a new job handler instance.
      *
@@ -46,6 +53,7 @@ public function __construct($event)
         $this->event = $event;
         $this->tries = property_exists($event, 'tries') ? $event->tries : null;
         $this->timeout = property_exists($event, 'timeout') ? $event->timeout : null;
+        $this->backoff = property_exists($event, 'backoff') ? $event->backoff : null;
         $this->afterCommit = property_exists($event, 'afterCommit') ? $event->afterCommit : null;
     }