How to send preflight request from axios of ReactJS

curl -s -v --tlsv1.2 -H "Origin: http://localhost:3000" -F upfile=@_mat/myfile.mp3 -H "Access-Control-Request-Method: POST" -H "Access-Control-Request-Headers: X-Requested-With" -X OPTIONS https://api.aicomposer.net:8008/upload

There is no axios.option thoughm, I made this code.

  formData.append(
    "upfile",
    this.state.selectedFile, // _mat/myfile.mp3 is stored from input type="file" here
    this.state.selectedFile.name // 
  );

  const config = {
    headers: {
      "Access-Control-Request-Headers": "X-Requested-With" ,
      "Access-Control-Request-Method": "POST",
      'Origin':"http://localhost:3000",
    }
  }
  axios.post(`https://api.example.com:8008/upload/`,formData,config).then((res) =>
  {
    console.log(res);
  }).catch(err =>{
      console.log(err);
  });

It shows many errors.....

Refused to set unsafe header "Access-Control-Request-Headers" Refused to set unsafe header "Access-Control-Request-Method" Refused to set unsafe header "Origin"

How can I make the equivalent code to curl??

THank you for comment.

I understood axios send preflight request automatically

However I still not unsure ,how it works.

For example I attached the header 'Content-Type': 'application/json' to GET request.

  var config = {
    headers: {
      'Content-Type': 'application/json'
    }
  }
  axios.get(`http://api.example.com/upload/`,config).then(res =>{
    console.log("upload endpoint get OK");
    console.log(res);
  }).catch(err=>{
    console.log("upload endpoint get NG");
    console.log(err);
  });

It doens't show error but,upload connection is called only once in google developper console.