'guards' => [
    'sso' => [
        'driver' => 'session',
        'provider' => 'sso',
    ],
],
'providers' => [
    'sso' => [
        'driver' => 'sso',
        'table' => 'sso',
    ],
],

// sso client system
Route::get('sso', function () {
    $client = new \GuzzleHttp\Client();
    
    $response = $client->get('http://yourdomain/sso/getTicket?'.http_build_query([
        'app_id' => 'your_app_id',
        'secret' => 'your_secret',
    ]));

    $result = json_decode((string)$response->getBody(), true);

    if ($ticket = $result['ticket'] ?? null) {
        return redirect('http://yourdomain/sso/login?ticket='.$ticket);
    }
});

protected $routeMiddleware = [
    // ...
    'ticket' => \Cblink\Sso\Http\Middleware\LoginWithTicket::class,
];

// declare route priority
protected $middlewarePriority = [
    \Illuminate\Session\Middleware\StartSession::class,
    \Illuminate\View\Middleware\ShareErrorsFromSession::class,
    \Cblink\Sso\Http\Middleware\LoginWithTicket::class,
    \Illuminate\Auth\Middleware\Authenticate::class,
    \Illuminate\Session\Middleware\AuthenticateSession::class,
    \Illuminate\Routing\Middleware\SubstituteBindings::class,
    \Illuminate\Auth\Middleware\Authorize::class,
];

Route::group(['middleware' => ['ticket', 'auth'], function () {
    // ...
});