mirjak
commented
1 month ago @huitema "retire prio to" is specified in RFC9000:
The Retire Prior To field applies to connection IDs established during connection setup and the preferred_address transport parameter; see Section 5.1.2. The value in the Retire Prior To field MUST be less than or equal to the value in the Sequence Number field. Receiving a value in the Retire Prior To field that is greater than that in the Sequence Number field MUST be treated as a connection error of type FRAME_ENCODING_ERROR.
Once a sender indicates a Retire Prior To value, smaller values sent in subsequent NEW_CONNECTION_ID frames have no effect. A receiver MUST ignore any Retire Prior To fields that do not increase the largest received Retire Prior To value.
An endpoint that receives a NEW_CONNECTION_ID frame with a sequence number smaller than the Retire Prior To field of a previously received NEW_CONNECTION_ID frame MUST send a corresponding RETIRE_CONNECTION_ID frame that retires the newly received connection ID, unless it has already done so for that sequence number.
The only thing that changes is that the MP_ frames are used und that the sequence numbers are per path. This is explained in the text. What else do you think needs to be specified?
huitema
…in RFC9000