[Cellar] [Errata Verified] RFC8794 (7189)
RFC Errata System <rfc-editor@rfc-editor.org> Mon, 10 July 2023 00:35 UTC
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Subject: [Cellar] [Errata Verified] RFC8794 (7189)
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The following errata report has been verified for RFC8794, "Extensible Binary Meta Language". -------------------------------------- You may review the report below and at: https://www.rfc-editor.org/errata/eid7189 -------------------------------------- Status: Verified Type: Technical Reported by: Steve Lhomme <slhomme@matroska.org> Date Reported: 2022-10-30 Verified by: Murray Kucherawy (IESG) Section: 17.1. Original Text ------------- One-octet Element IDs MUST be between 0x81 and 0xFE. These items are valuable because they are short, and they need to be used for commonly repeated elements. Element IDs are to be allocated within this range according to the "RFC Required" policy [RFC8126]. The following one-octet Element IDs are RESERVED: 0xFF and 0x80. Values in the one-octet range of 0x00 to 0x7F are not valid for use as an Element ID. Two-octet Element IDs MUST be between 0x407F and 0x7FFE. Element IDs are to be allocated within this range according to the "Specification Required" policy [RFC8126]. The following two-octet Element IDs are RESERVED: 0x7FFF and 0x4000. Values in the two-octet ranges of 0x0000 to 0x3FFF and 0x8000 to 0xFFFF are not valid for use as an Element ID. Three-octet Element IDs MUST be between 0x203FFF and 0x3FFFFE. Element IDs are to be allocated within this range according to the "First Come First Served" policy [RFC8126]. The following three-octet Element IDs are RESERVED: 0x3FFFFF and 0x200000. Values in the three-octet ranges of 0x000000 to 0x1FFFFF and 0x400000 to 0xFFFFFF are not valid for use as an Element ID. Four-octet Element IDs MUST be between 0x101FFFFF and 0x1FFFFFFE. Four-octet Element IDs are somewhat special in that they are useful for resynchronizing to major structures in the event of data corruption or loss. As such, four-octet Element IDs are split into two categories. Four-octet Element IDs whose lower three octets (as encoded) would make printable 7-bit ASCII values (0x20 to 0x7E, inclusive) MUST be allocated by the "Specification Required" policy. Sequential allocation of values is not required: specifications SHOULD include a specific request and are encouraged to do early allocations. To be clear about the above category: four-octet Element IDs always start with hex 0x10 to 0x1F, and that octet may be chosen so that the entire VINT has some desirable property, such as a specific CRC. The other three octets, when ALL having values between 0x20 (32, ASCII Space) and 0x7E (126, ASCII "~"), fall into this category. Other four-octet Element IDs may be allocated by the "First Come First Served" policy. The following four-octet Element IDs are RESERVED: 0x1FFFFFFF and 0x10000000. Values in the four-octet ranges of 0x00000000 to 0x0FFFFFFF and 0x20000000 to 0xFFFFFFFF are not valid for use as an Element ID. Corrected Text -------------- One-octet Element IDs MUST be between 0x80 and 0xFE. These items are valuable because they are short, and they need to be used for commonly repeated elements. Element IDs are to be allocated within this range according to the "RFC Required" policy [RFC8126]. The following one-octet Element ID is RESERVED: 0xFF. Values in the one-octet range of 0x00 to 0x7F are not valid for use as an Element ID. Two-octet Element IDs MUST be between 0x407F and 0x7FFE. Element IDs are to be allocated within this range according to the "Specification Required" policy [RFC8126]. The following two-octet Element ID is RESERVED: 0x7FFF. Values in the two-octet ranges of 0x0000 to 0x4000 and 0x8000 to 0xFFFF are not valid for use as an Element ID. Three-octet Element IDs MUST be between 0x203FFF and 0x3FFFFE. Element IDs are to be allocated within this range according to the "First Come First Served" policy [RFC8126]. The following three-octet Element ID is RESERVED: 0x3FFFFF. Values in the three-octet ranges of 0x000000 to 0x200000 and 0x400000 to 0xFFFFFF are not valid for use as an Element ID. Four-octet Element IDs MUST be between 0x101FFFFF and 0x1FFFFFFE. Four-octet Element IDs are somewhat special in that they are useful for resynchronizing to major structures in the event of data corruption or loss. As such, four-octet Element IDs are split into two categories. Four-octet Element IDs whose lower three octets (as encoded) would make printable 7-bit ASCII values (0x20 to 0x7E, inclusive) MUST be allocated by the "Specification Required" policy. Sequential allocation of values is not required: specifications SHOULD include a specific request and are encouraged to do early allocations. To be clear about the above category: four-octet Element IDs always start with hex 0x10 to 0x1F, and that octet may be chosen so that the entire VINT has some desirable property, such as a specific CRC. The other three octets, when ALL having values between 0x20 (32, ASCII Space) and 0x7E (126, ASCII "~"), fall into this category. Other four-octet Element IDs may be allocated by the "First Come First Served" policy. The following four-octet Element ID is RESERVED: 0x1FFFFFFF. Values in the four-octet ranges of 0x00000000 to 0x10000000 and 0x20000000 to 0xFFFFFFFF are not valid for use as an Element ID. Notes ----- Allow 0x80 EBML ID (and similar) since it's used in Matroska. This changes the rules for the IANA registry. See https://github.com/ietf-wg-cellar/ebml-specification/pull/408 -------------------------------------- RFC8794 (draft-ietf-cellar-ebml-17) -------------------------------------- Title : Extensible Binary Meta Language Publication Date : July 2020 Author(s) : S. Lhomme, D. Rice, M. Bunkus Category : PROPOSED STANDARD Source : Codec Encoding for LossLess Archiving and Realtime transmission Area : Applications and Real-Time Stream : IETF Verifying Party : IESG
- [Cellar] [Errata Verified] RFC8794 (7189) RFC Errata System
- [Cellar] [IANA #1276199] [Errata Verified] RFC879… Amanda Baber via RT
- [Cellar] [IANA #1276199] [Errata Verified] RFC879… Amanda Baber via RT
- Re: [Cellar] [IANA #1276199] [Errata Verified] RF… Steve Lhomme
- Re: [Cellar] [IANA #1276199] [Errata Verified] RF… Dave Rice