Add missing prefix to user authentication response

Author: sonologico

composer.phar

@@ -862,9 +862,10 @@ public function authenticateUser(string $socket_id, array $user_data): string
         $this->validate_user_data($user_data);
         $serialized_user_data = json_encode($user_data, JSON_THROW_ON_ERROR);
         $signature = hash_hmac('sha256', "$socket_id::user::$serialized_user_data", $this->settings['secret'], false);
+        $auth = $this->settings['auth_key'] . ':' . $signature;
 
         return json_encode(
-            ['auth' => $signature, 'user_data' => $serialized_user_data],
+            ['auth' => $auth, 'user_data' => $serialized_user_data],
             JSON_THROW_ON_ERROR
         );
     }

src/Pusher.php

@@ -27,7 +27,7 @@ public function testAuthenticateUser(): void
     {
         $auth_string = $this->pusher->authenticateUser('12345.6789', ['id' => '123']);
         self::assertEquals(
-            '{"auth":"fc713f433deb729d0d96f9e26ef054285cbc3e833ebe840b93722a2fa16a6a18","user_data":"{\"id\":\"123\"}"}',
+            '{"auth":"thisisaauthkey:fc713f433deb729d0d96f9e26ef054285cbc3e833ebe840b93722a2fa16a6a18","user_data":"{\"id\":\"123\"}"}',
             $auth_string,
             'Auth string valid'
         );
@@ -37,7 +37,7 @@ public function testAuthenticateUserUserData(): void
     {
         $auth_string = $this->pusher->authenticateUser('12345.6789', ['id' => '123', 'name' => 'John Smith']);
         self::assertEquals(
-            '{"auth":"0dddb208b53c7649f3fbbb86254a6e1986bc6f8b566423ea690c9ca773497373","user_data":"{\"id\":\"123\",\"name\":\"John Smith\"}"}',
+            '{"auth":"thisisaauthkey:0dddb208b53c7649f3fbbb86254a6e1986bc6f8b566423ea690c9ca773497373","user_data":"{\"id\":\"123\",\"name\":\"John Smith\"}"}',
             $auth_string,
             'Auth string valid'
         );