Add support for custom payloads and channels in broadcasting

src/Illuminate/Broadcasting/BroadcastEvent.php

@@ -90,7 +90,9 @@ public function handle(BroadcastingFactory $manager)
 
         foreach ($connections as $connection) {
             $manager->connection($connection)->broadcast(
-                $channels, $name, $payload
+                $this->getConnectionChannels($channels, $connection),
+                $name,
+                $this->getConnectionPayload($payload, $connection)
             );
         }
     }
@@ -134,6 +136,40 @@ protected function formatProperty($value)
         return $value;
     }
 
+    /**
+     * Get the channels for the given connection.
+     *
+     * @param  array  $channels
+     * @param  string  $connection
+     * @return array
+     */
+    protected function getConnectionChannels($channels, $connection)
+    {
+        return is_array($channels[$connection] ?? null)
+            ? $channels[$connection]
+            : $channels;
+    }
+
+    /**
+     * Get the payload for the given connection.
+     *
+     * @param  array  $payload
+     * @param  string  $connection
+     * @return array
+     */
+    protected function getConnectionPayload($payload, $connection)
+    {
+        $connectionPayload = is_array($payload[$connection] ?? null)
+            ? $payload[$connection]
+            : $payload;
+
+        if (isset($payload['socket'])) {
+            $connectionPayload['socket'] = $payload['socket'];
+        }
+
+        return $connectionPayload;
+    }
+
     /**
      * Get the display name for the queued job.
      *

tests/Broadcasting/BroadcastEventTest.php

@@ -64,6 +64,28 @@ public function testSpecificBroadcasterGiven()
 
         (new BroadcastEvent($event))->handle($manager);
     }
+
+    public function testSpecificChannelsPerConnection()
+    {
+        $broadcaster = m::mock(Broadcaster::class);
+
+        $broadcaster->shouldReceive('broadcast')->once()->with(
+            ['first-channel'], TestBroadcastEventWithChannelsPerConnection::class, ['firstName' => 'Taylor', 'lastName' => 'Otwell', 'collection' => ['foo' => 'bar']]
+        );
+
+        $broadcaster->shouldReceive('broadcast')->once()->with(
+            ['second-channel'], TestBroadcastEventWithChannelsPerConnection::class, ['firstName' => 'Taylor']
+        );
+
+        $manager = m::mock(BroadcastingFactory::class);
+
+        $manager->shouldReceive('connection')->once()->with('first_connection')->andReturn($broadcaster);
+        $manager->shouldReceive('connection')->once()->with('second_connection')->andReturn($broadcaster);
+
+        $event = new TestBroadcastEventWithChannelsPerConnection;
+
+        (new BroadcastEvent($event))->handle($manager);
+    }
 }
 
 class TestBroadcastEvent
@@ -101,3 +123,36 @@ public function __construct()
         $this->broadcastVia('log');
     }
 }
+
+class TestBroadcastEventWithChannelsPerConnection extends TestBroadcastEvent
+{
+    public function broadcastConnections()
+    {
+        return [
+            'first_connection',
+            'second_connection',
+        ];
+    }
+
+    public function broadcastWith()
+    {
+        return [
+            'first_connection' => [
+                'firstName' => 'Taylor',
+                'lastName' => 'Otwell',
+                'collection' => ['foo' => 'bar'],
+            ],
+            'second_connection' => [
+                'firstName' => 'Taylor',
+            ],
+        ];
+    }
+
+    public function broadcastOn()
+    {
+        return [
+            'first_connection' => ['first-channel'],
+            'second_connection' => ['second-channel'],
+        ];
+    }
+}