Get filename from given urlopen object and URL.
First, tries the “Content-Disposition”, if unavailable, extracts name from the URL.
If this fails, the default keyword will be used.
- Parameters:
sock (urlopen) – The urlopen to parse for the filename.
url (str) – The URL to parse for the filename.
default (str, optional) – The name to use if the first two methods fail. Defaults to “file”.
- Returns:
bytes – The filename in file system encoding.
