onXhrOpen not work

[hoangvietfreelancer]

Expected Behavior

onXhrOpen will make custom request header

Actual Behavior

onXhrOpen not make any custom header

Steps to reproduce

var player = jwplayer("player");
player.setup({
      sources: [{
          file: 'myVideo.m3u8',
          onXhrOpen: function(xhr, url) {
            xhr.setRequestHeader('myHeader', 'myHeaderValue');
          }
      }]
})
jwplayer_hls_provider.attach();

Docs of jwplayer about this is here: