diff --git a/src/ClientProviders/Client.php b/src/ClientProviders/Client.php
index 3834e33..cd3f3c7 100644
--- a/src/ClientProviders/Client.php
+++ b/src/ClientProviders/Client.php
@@ -16,9 +16,14 @@ class Client
     /** @var string */
     public $appSecret;
 
-    public static function find(string $appKey): ?Client
+    public static function findByAppId(int $appId)
     {
-        return app(ClientProvider::class)->findClient($appKey);
+        return app(ClientProvider::class)->findByAppId($appId);
+    }
+
+    public static function findByAppKey(string $appKey): ?Client
+    {
+        return app(ClientProvider::class)->findByAppKey($appKey);
     }
 
     public function __construct($appId, string $appKey, string $appSecret)
@@ -43,4 +48,6 @@ class Client
     }
 
 
+
+
 }
\ No newline at end of file
diff --git a/src/ClientProviders/ClientProvider.php b/src/ClientProviders/ClientProvider.php
index cd77b03..f363f53 100644
--- a/src/ClientProviders/ClientProvider.php
+++ b/src/ClientProviders/ClientProvider.php
@@ -5,5 +5,7 @@ namespace BeyondCode\LaravelWebSockets\ClientProviders;
 
 interface ClientProvider
 {
-    public function findClient(string $appId): ?Client;
+    public function findByAppId(int $appId): ?Client;
+
+    public function findByAppKey(string $appKey): ?Client;
 }
\ No newline at end of file
diff --git a/src/ClientProviders/ConfigClientProvider.php b/src/ClientProviders/ConfigClientProvider.php
index 89f5ddd..6cf63d1 100644
--- a/src/ClientProviders/ConfigClientProvider.php
+++ b/src/ClientProviders/ConfigClientProvider.php
@@ -2,22 +2,43 @@
 
 namespace BeyondCode\LaravelWebSockets\ClientProviders;
 
+use Illuminate\Support\Collection;
+
 class ConfigClientProvider implements ClientProvider
 {
-    public function findClient(string $appKey): ?Client
+    public function findByAppId(int $appId): ?Client
     {
-        $allClients = collect(config('websockets.clients'));
+        $clientAttributes = $this
+            ->allClients()
+            ->firstWhere('app_id', $appId);
 
-        $client = $allClients->firstWhere('app_key', $appKey);
+        return $this->instanciate($clientAttributes);
+    }
 
-        if (! $client) {
+    public function findByAppKey(string $appKey): ?Client
+    {
+        $clientAttributes = $this
+            ->allClients()
+            ->firstWhere('app_key', $appKey);
+
+        return $this->instanciate($clientAttributes);
+    }
+
+    protected function allClients(): Collection
+    {
+        return collect(config('websockets.clients'));
+    }
+
+    protected function instanciate(?array $clientAttributes): ?Client
+    {
+        if (! $clientAttributes) {
             return null;
         }
 
         return new Client(
-            $client['app_id'],
-            $client['app_key'],
-            $client['app_secret']
+            $clientAttributes['app_id'],
+            $clientAttributes['app_key'],
+            $clientAttributes['app_secret']
         );
     }
 }
\ No newline at end of file
diff --git a/src/LaravelEcho/Http/Controllers/EchoController.php b/src/LaravelEcho/Http/Controllers/EchoController.php
index 9199800..79d9e39 100644
--- a/src/LaravelEcho/Http/Controllers/EchoController.php
+++ b/src/LaravelEcho/Http/Controllers/EchoController.php
@@ -2,6 +2,7 @@
 
 namespace BeyondCode\LaravelWebSockets\LaravelEcho\Http\Controllers;
 
+use BeyondCode\LaravelWebSockets\ClientProviders\Client;
 use Exception;
 use Illuminate\Http\Request;
 use GuzzleHttp\Psr7 as gPsr;
@@ -60,8 +61,7 @@ abstract class EchoController implements HttpServerInterface
 
     function onError(ConnectionInterface $connection, Exception $exception)
     {
-        if ($exception instanceof HttpException)
-        {
+        if ($exception instanceof HttpException) {
             $response = new Response($exception->getStatusCode(), [
                 'Content-Type' => 'application/json'
             ], json_encode([
@@ -75,10 +75,11 @@ abstract class EchoController implements HttpServerInterface
 
     public function verifyAppId(string $appId)
     {
-        /** TODO: use client config from config file */
-        if ($appId !== config('broadcasting.connections.pusher.app_id')) {
-            throw new HttpException(401, 'Invalid App ID provided.');
+        if ($client = Client::findByAppId($appId)) {
+             return;
         }
+
+        throw new HttpException(401, "Unknown app id `{$appId}` provided.");
     }
 
     abstract public function __invoke(Request $request);
diff --git a/src/LaravelEcho/WebSocket/PusherServer.php b/src/LaravelEcho/WebSocket/PusherServer.php
index b1cf513..79eabcc 100644
--- a/src/LaravelEcho/WebSocket/PusherServer.php
+++ b/src/LaravelEcho/WebSocket/PusherServer.php
@@ -60,7 +60,7 @@ class PusherServer extends WebSocketController
         $queryParameters = [];
         parse_str($request->getUri()->getQuery(), $queryParameters);
 
-        if (! $client = Client::find($queryParameters['appKey'])) {
+        if (! $client = Client::findByAppKey($queryParameters['appKey'])) {
             throw new UnknownAppKey($queryParameters['appKey']);
         }