= hirsute verification =
# Start by showing we can still reproduce the problem w/o the -proposed packages:
ubuntu@avoton02:~$ sudo iptables -A INPUT -p tcp -s 91.189.88.136 -m string --string maas.io --algo bm -j DROP
ubuntu@avoton02:~$ python3 ./repro.py & sleep 60
[1] 3386
# 60 seconds have passed, still hung:
ubuntu@avoton02:~$ sudo strace -p 3386
strace: Process 3386 attached
read(3, ^Cstrace: Process 3386 detached
 <detached ...>

ubuntu@avoton02:~$ fg
python3 ./repro.py
^CTraceback (most recent call last):
  File "/home/ubuntu/./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 542, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 655, 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 699, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 382, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 1012, in _validate_conn
    conn.connect()
  File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 411, in connect
    self.sock = ssl_wrap_socket(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 428, in ssl_wrap_socket
    ssl_sock = _ssl_wrap_socket_impl(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 472, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/lib/python3.9/ssl.py", line 500, in wrap_socket
    return self.sslsocket_class._create(
  File "/usr/lib/python3.9/ssl.py", line 1040, in _create
    self.do_handshake()
  File "/usr/lib/python3.9/ssl.py", line 1309, in do_handshake
    self._sslobj.do_handshake()
KeyboardInterrupt

# Now upgrade and demonstrate the problem is fixed

ubuntu@avoton02:~$ sudo apt install python3-simplestreams simplestreams -y
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages will be upgraded:
  python3-simplestreams simplestreams
2 upgraded, 0 newly installed, 0 to remove and 68 not upgraded.
Need to get 31.8 kB/37.8 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu hirsute-proposed/main amd64 python3-simplestreams all 0.1.0-30-g3cc8988a-0ubuntu1.21.04.1 [31.8 kB]
Fetched 31.8 kB in 0s (119 kB/s)                
(Reading database ... 79414 files and directories currently installed.)
Preparing to unpack .../python3-simplestreams_0.1.0-30-g3cc8988a-0ubuntu1.21.04.1_all.deb ...
Unpacking python3-simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.21.04.1) over (0.1.0-30-g3cc8988a-0ubuntu1) ...
Preparing to unpack .../simplestreams_0.1.0-30-g3cc8988a-0ubuntu1.21.04.1_all.deb ...
Unpacking simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.21.04.1) over (0.1.0-30-g3cc8988a-0ubuntu1) ...
Setting up python3-simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.21.04.1) ...
Setting up simplestreams (0.1.0-30-g3cc8988a-0ubuntu1.21.04.1) ...
Scanning processes...                                                                                           
Scanning processor microcode...                                                                                 
Scanning linux images...                                                                                        

Running kernel seems to be up-to-date.

The processor microcode seems to be up-to-date.

No services need to be restarted.

No containers need to be restarted.

No user sessions are running outdated binaries.
ubuntu@avoton02:~$ python3 ./repro.py & sleep 60
[1] 3605
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 382, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 1012, in _validate_conn
    conn.connect()
  File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 411, in connect
    self.sock = ssl_wrap_socket(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 428, in ssl_wrap_socket
    ssl_sock = _ssl_wrap_socket_impl(
  File "/usr/lib/python3/dist-packages/urllib3/util/ssl_.py", line 472, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
  File "/usr/lib/python3.9/ssl.py", line 500, in wrap_socket
    return self.sslsocket_class._create(
  File "/usr/lib/python3.9/ssl.py", line 1040, in _create
    self.do_handshake()
  File "/usr/lib/python3.9/ssl.py", line 1309, in do_handshake
    self._sslobj.do_handshake()
socket.timeout: _ssl.c:1106: The handshake operation 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 755, in urlopen
    retries = retries.increment(
  File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 531, 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 699, in urlopen
    httplib_response = self._make_request(
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 385, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 336, 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 "/home/ubuntu/./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 542, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 655, 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