Yii2 Cors Filter - randomly missing 'Access-Control-Allow-Origin' header -


i have created small api request data different domain. in controller have set cors filter using default values (api public, need allow origins):

public function behaviors() {     return [         'corsfilter' => [             'class' => \yii\filters\cors::classname(),         ]     ]; }

problem request returns error:

no 'access-control-allow-origin' header present on requested resource.

i error in few cases:

/api/transfer/destinations/airport-1 /api/transfer/destinations/airport-2 /api/transfer/destinations/airport-3 /api/transfer/destinations/airport-4 /api/transfer/destinations/airport-16 /api/transfer/destinations/airport-19

i have airports codes airport-1 airport-27, of codes, except ones mentioned above, work.

i have noticed requests missing access-control-allow-origin header, have content-length above 4000, while others have content-length below 3000. not sure if issue , if don't know how solve using cors filter.

i have not been able find information type of bug.


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