Re: [quicwg/base-drafts] Point out that the payload size could decrease (#3424)

[MikkelFJ <[e-mail]>]

mikkelfj commented on this pull request.



> @@ -3374,9 +3374,11 @@ priorities specified by the application indicate otherwise (see
 
 Even though a sender is encouraged to assemble frames containing up-to-date
 information every time it sends a packet, it is not forbidden to retransmit
-copies of frames from lost packets.  A receiver MUST accept packets containing
-an outdated frame, such as a MAX_DATA frame carrying a smaller maximum data than
-one found in an older packet.
+copies of frames from lost packets.  A sender that retransmits copies of frames
+needs to handle decreases in available payload size due to change in packet
+number length, connection ID length, and path MTU.  A receiver MUST accept
+packets containing an outdated frame, such as a MAX_DATA frame carrying a
+smaller maximum data than one found in an older packet.
 

I don't understand this text: I can see old data arriving in new packets and you can't generally which is the latest valid, except when you can, such as MAX_DATA. You don't want to accept old MAX_DATA frames (or at least not change behaviour based on it).

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