Commits on Aug 28, 2024

1. Force Handshake packet epoch for CC frame if handshake hasn't been co… …

   …nfirmed
   
   The RFC states that an endpoint can immediately close a connection by
   sending a CONNECTION_CLOSE frame during the handshake:
   > However, prior to confirming the handshake, it is possible that more
     advanced packet protection keys are not available to the peer, so
     another CONNECTION_CLOSE frame MAY be sent in a packet that uses a lower
     packet protection level.
   
   Currently, when we decide the packet epoch when a CC frame is present,
   we always choose Application. This commit downgrades the epoch to
   Handshake if the handshake wasn't confirmed.
   
   The test added in this PR fails without this patch - since the packet is
   sent in the Application space without keys, the server can't decrypt it,
   so its `peer_error` is None.

   

   evanrittenhouse committed Aug 28, 2024
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