Why does the cors filter only work on *?

Question

Yii

If origin = * , then everything loads, but if I write the domain, then the page is blocked, why?

public function behaviors()
{
    return [
        'corsFilter' => [
            'class' => \yii\filters\Cors::className(),
            'cors' => [
                'Origin' => ['https://test.test.ru'],
                'Access-Control-Request-Method' => ['POST'],
            ],

        ],
    ];
}

Answer 1

You need to specify domains from which requests can be made in the Access-Control-Allow-Origin header. Origin is the request header
More about CORS