Fix for issue #246

Pass SocketID through redis, and filter it on the receiving end.

This ensures that ->toOthers() works with scaling = true

src/Protocols/Pusher/EventDispatcher.php

@@ -28,6 +28,7 @@ public static function dispatch(Application $app, array $payload, ?Connection $c
             'type' => 'message',
             'application' => serialize($app),
             'payload' => $payload,
+            'socket_id' => $connection?->id(),
         ]);
     }
 
@@ -46,7 +47,6 @@ public static function dispatchSynchronously(Application $app, array $payload, ?
             }
 
             $payload['channel'] = $channel->name();
-
             $channel->broadcast($payload, $connection);
         }
     }

src/Protocols/Pusher/PusherPubSubIncomingMessageHandler.php

@@ -16,10 +16,15 @@ public function handle(string $payload): void
 
         $application = unserialize($event['application']);
 
+        $except = isset($event['socket_id']) ?
+            app(ChannelManager::class)->for($application)->connections()[$event['socket_id']] ?? null
+            : null;
+
         match ($event['type'] ?? null) {
             'message' => EventDispatcher::dispatchSynchronously(
                 $application,
-                $event['payload']
+                $event['payload'],
+                $except?->connection()
             ),
             'metrics' => app(MetricsHandler::class)->publish(
                 $application,