Drop pusher/pusher-php-server 4.x (#36528)

Co-authored-by: Taylor Otwell <[email protected]>

Author: GrahamCampbell

composer.json

@@ -146,7 +146,7 @@
         "phpunit/phpunit": "Required to use assertions and run tests (^9.4).",
         "predis/predis": "Required to use the predis connector (^1.1.2).",
         "psr/http-message": "Required to allow Storage::put to accept a StreamInterface (^1.0).",
-        "pusher/pusher-php-server": "Required to use the Pusher broadcast driver (^4.0|^5.0).",
+        "pusher/pusher-php-server": "Required to use the Pusher broadcast driver (^5.0).",
         "symfony/cache": "Required to PSR-6 cache bridge (^5.3).",
         "symfony/filesystem": "Required to enable support for relative symbolic links (^5.3).",
         "symfony/psr-http-message-bridge": "Required to use PSR-7 bridging features (^2.0).",

src/Illuminate/Broadcasting/Broadcasters/PusherBroadcaster.php

@@ -111,46 +111,19 @@ public function broadcast(array $channels, $event, array $payload = [])
     {
         $socket = Arr::pull($payload, 'socket');
 
-        if ($this->pusherServerIsVersionFiveOrGreater()) {
-            $parameters = $socket !== null ? ['socket_id' => $socket] : [];
-
-            try {
-                $this->pusher->trigger(
-                    $this->formatChannels($channels), $event, $payload, $parameters
-                );
-            } catch (ApiErrorException $e) {
-                throw new BroadcastException(
-                    sprintf('Pusher error: %s.', $e->getMessage())
-                );
-            }
-        } else {
-            $response = $this->pusher->trigger(
-                $this->formatChannels($channels), $event, $payload, $socket, true
-            );
-
-            if ((is_array($response) && $response['status'] >= 200 && $response['status'] <= 299)
-                || $response === true) {
-                return;
-            }
+        $parameters = $socket !== null ? ['socket_id' => $socket] : [];
 
+        try {
+            $this->pusher->trigger(
+                $this->formatChannels($channels), $event, $payload, $parameters
+            );
+        } catch (ApiErrorException $e) {
             throw new BroadcastException(
-                ! empty($response['body'])
-                    ? sprintf('Pusher error: %s.', $response['body'])
-                    : 'Failed to connect to Pusher.'
+                sprintf('Pusher error: %s.', $e->getMessage())
             );
         }
     }
 
-    /**
-     * Determine if the Pusher PHP server is version 5.0 or greater.
-     *
-     * @return bool
-     */
-    protected function pusherServerIsVersionFiveOrGreater()
-    {
-        return class_exists(ApiErrorException::class);
-    }
-
     /**
      * Get the Pusher SDK instance.
      *

src/Illuminate/Broadcasting/composer.json

@@ -34,7 +34,7 @@
         }
     },
     "suggest": {
-        "pusher/pusher-php-server": "Required to use the Pusher broadcast driver (^4.0|^5.0)."
+        "pusher/pusher-php-server": "Required to use the Pusher broadcast driver (^5.0)."
     },
     "config": {
         "sort-packages": true