• send_close_notify is now idempotent, in case it is accidentally called more than once.
• read_tls now refuses to read further data after a close_notify is received, by returning Ok(0) (ie, an EOF).
• Correct fix in 0.23.6 to properly discard data after close_notify received, avoiding a spurious DecryptError on subsequent calls to process_new_packets().

What's Changed

• Avoid sending multiple close notifies by @ctz in https://github.com/rustls/rustls/pull/1955

Full Changelog: https://github.com/rustls/rustls/compare/v/0.23.6...v/0.23.7