[TLS] Re: WG Last Call: draft-ietf-tls-super-jumbo-record-limit-02 (Ends 2025-11-25)

[John Mattsson <[e-mail]>]

Thanks Magnus,

I agree with your comment, this was missed when changing to variant.

https://github.com/tlswg/super-jumbo-record-limit/pull/13

I made a PR that adds the word “varuint” to both the text and the figure. Please review.

Cheers,
John

From: Magnus Westerlund <[e-mail]>
Date: Wednesday, 19 November 2025 at 17:38
To: Sean Turner <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>
Subject: Re: [TLS] WG Last Call: draft-ietf-tls-super-jumbo-record-limit-02 (Ends 2025-11-25)

TLS WG,

I have reviewed Super Jumbo Record Limit draft. I think it should be published but I think there are one issue that needs to be addressed.


  1.
Section 3:

All DTLS 1.3 records protected with application_traffic_secret and with length present MUST use a unified_hdr structure with a length equal to the TLS 1.3 length field defined above.

I think this and figure below are to unclear. It should be clearer that it redefined the unified_hdr actual length field to use the varuint encoding. At a minimal there need to be a field explanation for the length field that defined that this field is now a varuint.


Cheers

Magnus


From: Sean Turner via Datatracker <[e-mail]>
Date: Tuesday, 4 November 2025 at 15:57
To: [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>
Subject: [TLS] WG Last Call: draft-ietf-tls-super-jumbo-record-limit-02 (Ends 2025-11-25)


Subject: WG Last Call: draft-ietf-tls-super-jumbo-record-limit-02 (Ends
2025-11-25)

This message starts a 3-week WG Last Call for this document.

Abstract:
   TLS 1.3 records limit the inner plaintext (TLSInnerPlaintext) size to
   2^14 + 1 bytes, which includes one byte for the content type.
   Records also have a 3-byte overhead due to the fixed opaque_type and
   legacy_record_version fields.  This document defines a TLS extension
   that allows endpoints to negotiate a larger maximum inner plaintext
   size, up to 2^30 - 256 bytes, while reducing overhead.

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Thank you.

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