code: def upload_to_cache_server(fpath):
      
      url_base = 'http://torrage.info'
      url_upload = '%s/autoupload.php' % url_base
      url_download = '%s/torrent.php?h=' % url_base
      file_field = 'torrent'
  
      try:
          import requests
  
          response = requests.post(url_upload, files={file_field: open(fpath, 'rb')}, timeout=REMOTE_TIMEOUT)
          response.raise_for_status()
  
          info_cache = response.text
          return url_download + info_cache
  
      except (ImportError, requests.RequestException) as e:
  
          # Now trace is lost. `raise from` to consider.
          raise RemoteUploadError('Unable to upload to %s: %s' % (url_upload, e))
docs: Uploads .torrent file to a cache server.
  
      Returns upload file URL.
  
      :rtype: str