I would like to send audio file the same way POSTMAN binary request does it: When I use postman to send audio file to my server, it returns a good response...

But when I tried to send it from my mobile app with the same audio file, I don't have any response... Here is my code:

  const requestOptions = {
        method: 'PUT',
        headers: myHeaders,
        body: "file:///"
      };

      fetch("http://...", requestOptions)
        .then(response => response.json())
        .then(result => console.log(result))
        .catch(error => console.log('error', error));  

I really need your help... I'm on this since several days...