Bug: fail to handle "invalid literal for int() with base 16: b''"

[rndsrc]

On GitHub Action, the following exception were not handle properly:

2021-04-10_06.00.00:  16%|█▌        | 33/209 [09:02<48:12, 16.43s/it]
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 697, in _update_chunk_length
    self.chunk_left = int(line, 16)
ValueError: invalid literal for int() with base 16: b''

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 764, in read_chunked
    self._update_chunk_length()
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 701, in _update_chunk_length
    raise InvalidChunkLength(self, line)
urllib3.exceptions.InvalidChunkLength: InvalidChunkLength(got length b'', 0 bytes read)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/requests/models.py", line 753, in generate
    for chunk in self.raw.stream(chunk_size, decode_content=True):
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 572, in stream
    for line in self.read_chunked(amt, decode_content=decode_content):
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 793, in read_chunked
    self._original_response.close()
  File "/usr/lib/python3.7/contextlib.py", line 130, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/local/lib/python3.7/dist-packages/urllib3/response.py", line 455, in _error_catcher
    raise ProtocolError("Connection broken: %r" % e, e)
urllib3.exceptions.ProtocolError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/ucast", line 11, in <module>
    load_entry_point('ucast==0.1.3', 'console_scripts', 'ucast')()
  File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/ucast/__main__.py", line 73, in mktab
    save(outfile, mkdf(site, cycle, test))
  File "/usr/local/lib/python3.7/dist-packages/ucast/utils.py", line 47, in ucast_dataframe
    gfs = uc.gfs.GFS(site, cycle, hr)
  File "/usr/local/lib/python3.7/dist-packages/ucast/weather/gfs/core.py", line 33, in __init__
    r = request(data_url(site, cycle, product, gridsz))
  File "/usr/local/lib/python3.7/dist-packages/ucast/request.py", line 44, in request
    r = requests.get(url, timeout=(ctime, rtime))
  File "/usr/local/lib/python3.7/dist-packages/requests/api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python3.7/dist-packages/requests/sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.7/dist-packages/requests/sessions.py", line 697, in send
    r.content
  File "/usr/local/lib/python3.7/dist-packages/requests/models.py", line 831, in content
    self._content = b''.join(self.iter_content(CONTENT_CHUNK_SIZE)) or b''
  File "/usr/local/lib/python3.7/dist-packages/requests/models.py", line 756, in generate
    raise ChunkedEncodingError(e)
requests.exceptions.ChunkedEncodingError: ("Connection broken: InvalidChunkLength(got length b'', 0 bytes read)", InvalidChunkLength(got length b'', 0 bytes read))
Creating "KP/2021-04-10_06.00.00.tsv" ...
Error: Process completed with exit code 1.

[wumpus]

This is a truncated http result -- end of file in the middle. The error message sure is confusing!

[wumpus]

In my code gfs.py, this particular exception would be caught by the except requests.exceptions.RequestException clause.