Alvaro Herrera <alvherre@commandprompt.com> writes:
> I wonder if we can do something diffie-hellman'ish, where we have a
> parameter exchanged in the initial SSL'ed handshake, which is later used
> to generate new cancel keys each time the previous one is used.
Seems like the risk of getting out of sync would outweigh any benefits.
Lose one cancel message in the network, you have no hope of getting any
more accepted.
regards, tom lane