Re: [quicwg/base-drafts] Authenticate connection IDs (#3499)

[David Schinazi <[e-mail]>]

@DavidSchinazi commented on this pull request.



> @@ -1503,7 +1548,7 @@ An endpoint MUST NOT send a parameter more than once in a given transport
 parameters extension.  An endpoint SHOULD treat receipt of duplicate transport
 parameters as a connection error of type TRANSPORT_PARAMETER_ERROR.
 
-A server MUST include the original_connection_id transport parameter
+A server MUST include the original_destination_connection_id transport parameter

@martinthomson you truncated the sentence in your quote. The full sentence from your PR is:

> A server MUST include the original_destination_connection_id transport parameter
> ({{transport-parameter-definitions}}) if it sent a Retry packet to enable
> validation of the Retry, as described in {{packet-retry}}.

How about we keep the first line, but replace the rest:

> A server MUST include the original_destination_connection_id transport parameter
> to mitigate an attacker's ability to tamper with connection IDs during the handshake.

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