682 rebased#2

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arp102 wants to merge 3 commits intomasterfrom

Commits on Aug 29, 2023

Rely on close() to close sockets and stop using shutdown()

ShaneHarvey
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arp102
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Remove unused import.
arp102
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Commits on Sep 12, 2023

Update unit tests - no longer using socket.shutdown()
arp102
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