title: Standard method for HTTP partial upload, resume upload
body: <p>I'm developing http client/server framework, and looking for the correct way to handle partial uploads (the same as for downloads using GET method with Range header). </p>
  
  <p>But, HTTP PUT is not intended to be resumed. 
  And PATCH method, as i know, doesn't accept Range header.</p>
  
  <p>Is there any way to handle this in by HTTP standard (not using extension headers or etc)?</p>
  
  <p>Thanks in advance.</p>