Upload file using http.client.request

Hello, 
How can I upload a file by making a POST request through http.client.request("")

In other words, how can I set the request body with form data as my API is expecting multipart/form-data MIME type.
In JavaScript I do it like this:

var files = document.getElementById("file-input").files;
var formData = new FormData();
formData.append('"file",files[0]);
$.ajax({
 url : '${endpoint_url}',
 type : 'POST',
 data : formData,
 processData: false, // tell jQuery not to process the data
 contentType: false, // tell jQuery not to set contentType
 success : function(data) {
   console.log(JSON.stringify(data)); 
 } 
});

Thank you for your help in advance,
Youssef