I need a secure, reliable, ordered messages protocol.

TLS/TCP only does streams.
DTLS/UDP doesn't do reliability or ordering.
SCTP isn't secure.

Help?

Preferably something with a Python binding available.

@xiao Completely missing the message boundary preservation I was looking for, and is vulnerabile to downgrade attacks. For my purposes, this would be worse than TLS.

@xiao QUIC doesn't really have message boundaries either. I could use streams to implement them, but that would get messy fast.

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