= focal verification =
# Start by showing we can still reproduce the problem w/o the -proposed packages:
ubuntu@avoton07:~$ sudo iptables -A INPUT -p tcp -s 91.189.88.136 -m string --string maas.io --algo bm -j DROP
ubuntu@avoton07:~$ cat > repro.py
#!/usr/bin/env python3

from simplestreams.contentsource import RequestsUrlReader

url = "https://images.maas.io/ephemeral-v3/stable/streams/v1/index.sjson"
r = RequestsUrlReader(url)
ubuntu@avoton07:~$ python3 ./repro.py & sleep 60
[1] 3225
ubuntu@avoton07:~$ sudo strace -p 3225
strace: Process 3225 attached
read(3, ^Cstrace: Process 3225 detached
 <detached ...>

ubuntu@avoton07:~$ fg
python3 ./repro.py
^CTraceback (most recent call last):
  File "./repro.py", line 6, in <module>
    r = RequestsUrlReader(url)
  File "/usr/lib/python3/dist-packages/simplestreams/contentsource.py", line 381, in __init__
    self.req = requests.get(url, stream=True, auth=auth, headers=headers)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 670, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 381, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 978, in _validate_conn
    conn.connect()
  File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 361, in connect
    self.sock = ssl_wrap_socket(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 377, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/lib/python3/dist-packages/urllib3/contrib/pyopenssl.py", line 488, in wrap_socket
    cnx.do_handshake()
  File "/usr/lib/python3/dist-packages/OpenSSL/SSL.py", line 1933, in do_handshake
    result = _lib.SSL_do_handshake(self._ssl)
KeyboardInterrupt

# Now upgrade and demonstrate the problem is fixed
ubuntu@avoton07:~$ sudo apt install simplestreams python3-simplestreams
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  python3-simplestreams simplestreams
2 upgraded, 0 newly installed, 0 to remove and 67 not upgraded.
Need to get 37.8 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu groovy-proposed/main amd64 python3-simplestreams all 0.1.0-30-g3cc8988a-0ubuntu1.20.10.1 [31.8 kB]
Get:2 http://archive.ubuntu.com/ubuntu groovy-proposed/universe amd64 simplestreams all 0.1.0-30-g3cc8988a-0ubuntu1.20.10.1 [6012 B]
Fetched 37.8 kB in 0s (91.6 kB/s)      
(Reading database ... 77499 files and directories currently installed.)
Preparing to unpack .../python3-simplestreams_0.1.0-30-g3cc8988a-0ubuntu1.20.10.1_all.deb ...
Unpacking python3-simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.20.10.1) over (0.1.0-30-g3cc8988a-0ubuntu1) ...
Preparing to unpack .../simplestreams_0.1.0-30-g3cc8988a-0ubuntu1.20.10.1_all.deb ...
Unpacking simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.20.10.1) over (0.1.0-30-g3cc8988a-0ubuntu1) ...
Setting up python3-simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.20.10.1) ...
Setting up simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.20.10.1) ...
ubuntu@avoton07:~$ python3 ./repro.py & sleep 60
[1] 3406
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/urllib3/contrib/pyopenssl.py", line 488, in wrap_socket
    cnx.do_handshake()
  File "/usr/lib/python3/dist-packages/OpenSSL/SSL.py", line 1934, in do_handshake
    self._raise_ssl_error(self._ssl, result)
  File "/usr/lib/python3/dist-packages/OpenSSL/SSL.py", line 1646, in _raise_ssl_error
    raise WantReadError()
OpenSSL.SSL.WantReadError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 381, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 978, in _validate_conn
    conn.connect()
  File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 361, in connect
    self.sock = ssl_wrap_socket(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 377, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/lib/python3/dist-packages/urllib3/contrib/pyopenssl.py", line 491, in wrap_socket
    raise timeout("select timed out")
socket.timeout: select timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 724, in urlopen
    retries = retries.increment(
  File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 403, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/lib/python3/dist-packages/six.py", line 703, in reraise
    raise value
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 670, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 384, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 335, in _raise_timeout
    raise ReadTimeoutError(
urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='images.maas.io', port=443): Read timed out. (read timeout=10)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./repro.py", line 6, in <module>
    r = RequestsUrlReader(url)
  File "/usr/lib/python3/dist-packages/simplestreams/contentsource.py", line 382, in __init__
    self.req = requests.get(
  File "/usr/lib/python3/dist-packages/requests/api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 529, in send
    raise ReadTimeout(e, request=request)
requests.exceptions.ReadTimeout: HTTPSConnectionPool(host='images.maas.io', port=443): Read timed out. (read timeout=10)
[1]+  Exit 1                  python3 ./repro.py