download functions on .txt files

[deroskarmodulo]

When trying to download a .txt file from my cloud I got the error KeyError: 'content-length'. Actually it worked with .txt files with less than exactly 256 characters. Other file types (such as .png, .jpeg, .mp3, .csv) worked just fine. It did not matter of which format the local file was (so even that client.download_file('/publish/_testing/test', 'tmp/test.txt') worked.

Code: client.download_file('/publish/_testing/test.txt', 'tmp/_local_test.txt'))
test.txt: testtesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttesttest
Error:

  File "my_file.py", 
line 36, in <module>
    print(client.download_file('/publish/_testing/test.txt', 'tmp/test.txt'))
  File "webdav3\client.py", line 67, in _wrapper
    res = fn(self, *args, **kw)
  File "webdav3\client.py", line 458, in download_file
    total = int(response.headers['content-length'])
  File "requests\structures.py", line 52, in __getitem__
    return self._store[key.lower()][1]
KeyError: 'content-length'

[deroskarmodulo]

The problem is that in the download_file function in client.py the execute_request function delivers a header without a 'content-length' entry for .txt-files with more than 255 characters. To prevent the script from failing due to this error, you could add an exception like this:

        with open(local_path, 'wb') as local_file:
            response = self.execute_request('download', urn.quote())
            try:
                total = int(response.headers['content-length'])
            except:
                total = None
            current = 0