Course downloads a module or so and then shows ssl/connection error

[JunaidShafi]

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Subject of the issue

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Your environment

• Operating System (name/version): windows 10
• Python version:3.7
• youtube-dl version:
• edx-dl version:

Steps to reproduce

Tell us how to reproduce this issue. Please provide us the course URL, and the
specific subsection or unit if possible.

Expected behaviour

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Actual behaviour

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output of the command or the stacktrace (don't forget to obfuscate your
username and password). If you cannot copy the exception, attach a screenshot.

File : 100%|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 5.66M/5.66M [00:00, 2.59MB/s]

                                                                                                                                                                                                                                        Got SSL/Connection error: HTTPSConnectionPool(host='courses.edx.org', port=443): Max retries exceeded with url: /assets/courseware/v1/85d65fa50b105982e579293f9adbc540/asset-v1:CornellX+ENGR2000X+1T2018+type@asset+block/Handout_2.1_SolidMech_BigIdeas_WithoutNotes.pdf (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000017BF67B8448>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed'))

Hint: if you want to ignore this error, add --ignore-errors option to the command line

Traceback (most recent call last):
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connection.py", line 170, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\util\connection.py", line 73, in create_connection
for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
File "c:\users\mirju\appdata\local\programs\python\python37\lib\socket.py", line 752, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11002] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connectionpool.py", line 706, in urlopen
chunked=chunked,
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connectionpool.py", line 382, in _make_request
self._validate_conn(conn)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connectionpool.py", line 1010, in _validate_conn
conn.connect()
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connection.py", line 353, in connect
conn = self._new_conn()
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connection.py", line 182, in _new_conn
self, "Failed to establish a new connection: %s" % e
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPSConnection object at 0x0000017BF67B8448>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\adapters.py", line 449, in send
timeout=timeout
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\connectionpool.py", line 756, in urlopen
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\urllib3\util\retry.py", line 573, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='courses.edx.org', port=443): Max retries exceeded with url: /assets/courseware/v1/85d65fa50b105982e579293f9adbc540/asset-v1:CornellX+ENGR2000X+1T2018+type@asset+block/Handout_2.1_SolidMech_BigIdeas_WithoutNotes.pdf (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000017BF67B8448>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "c:\users\mirju\appdata\local\programs\python\python37\lib\runpy.py", line 193, in _run_module_as_main
"main", mod_spec)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\runpy.py", line 85, in run_code
exec(code, run_globals)
File "C:\Users\mirju\AppData\Local\Programs\Python\Python37\Scripts\edx-dl.exe_main.py", line 7, in
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 1236, in main
download(args, selections, filtered_units, headers)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 1004, in download
download_unit(unit, args, target_dir, filename_prefix, headers)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 948, in download_unit
skip_or_download(res_downloads, FileType.Resource, headers, args)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 911, in skip_or_download
f(url, filename, headers, args)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 858, in download_url
raise e
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\edx_dl\edx_dl.py", line 850, in download_url
r = requests.get(url, headers=headers)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\api.py", line 76, in get
return request('get', url, params=params, **kwargs)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\sessions.py", line 542, in request
resp = self.send(prep, **send_kwargs)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\sessions.py", line 655, in send
r = adapter.send(request, **kwargs)
File "c:\users\mirju\appdata\local\programs\python\python37\lib\site-packages\requests\adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='courses.edx.org', port=443): Max retries exceeded with url: /assets/courseware/v1/85d65fa50b105982e579293f9adbc540/asset-v1:CornellX+ENGR2000X+1T2018+type@asset+block/Handout_2.1_SolidMech_BigIdeas_WithoutNotes.pdf (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000017BF67B8448>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed'))