AttributeError: 'socket' object has no attribute 'setsockopt' (TLS)

[anecdata]

When trying to set up a TLS TCP server on WIZnet using
adafruit/circuitpython#8954
+
https://github.com/adafruit/Adafruit_CircuitPython_Wiznet5k/tree/core-compatible-socket-type-numbers

ss = ssl_context.wrap_socket(s, server_side=True)
results in
AttributeError: 'socket' object has no attribute 'setsockopt'

[anecdata]

Looks like this applies to TLS clients now too. sockopt was implemented in adafruit/circuitpython@e5f0579 on 3/25, but the 3/21 artifacts will still run TLS clients on WIZnet:
https://github.com/adafruit/circuitpython/actions/runs/8380440828

But something else is going on with TLS server using 3/21 artifacts:

Accepting connections (mem=1977744)
Traceback (most recent call last):
  File "code.py", line 63, in <module>
OSError: [Errno 22] Invalid argument

Code done running.
MemoryError: 
MemoryError: 

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line 63 is the accept():

    print(f"Accepting connections (mem={gc.mem_free()})")
    conn, addr = ss.accept()