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5. IANA Considerations

5.1. HTTP/3 Setting​

IANA has registered the following entry in the "HTTP/3 Settings" registry maintained at ````https://www.iana.org/assignments/http3-parameters\````:

  • Value: 0x33
  • Setting Name: SETTINGS_H3_DATAGRAM
  • Default: 0
  • Status: permanent
  • Reference: RFC 9297
  • Change Controller: IETF
  • Contact: HTTP_WG; HTTP working group; <[email protected]>
  • Notes: None

5.2. HTTP/3 Error Code​

IANA has registered the following entry in the "HTTP/3 Error Codes" registry maintained at ````https://www.iana.org/assignments/http3-parameters\````:

  • Value: 0x33
  • Name: H3_DATAGRAM_ERROR
  • Description: Datagram or Capsule Protocol parse error
  • Status: permanent
  • Reference: RFC 9297
  • Change Controller: IETF
  • Contact: HTTP_WG; HTTP working group; <[email protected]>
  • Notes: None

5.3. HTTP Header Field Name​

IANA has registered the following entry in the "Hypertext Transfer Protocol (HTTP) Field Name Registry" maintained at ````https://www.iana.org/assignments/http-fields\````:

  • Field Name: Capsule-Protocol
  • Template: None
  • Status: permanent
  • Reference: RFC 9297
  • Comments: None

5.4. Capsule Types​

This document establishes a registry for HTTP Capsule Type codes. The "HTTP Capsule Types" registry governs a 62-bit space and operates under the QUIC registration policy documented in Section 22.1 of [QUIC]. This new registry includes the common set of fields listed in Section 22.1.1 of [QUIC]. In addition to those common fields, all registrations in this registry MUST include a "Capsule Type" field that contains a short name or label for the Capsule Type.

Permanent registrations in this registry are assigned using the Specification Required policy (Section 4.6 of [IANA-POLICY]), except for values between 0x00 and 0x3f (in hexadecimal; inclusive), which are assigned using Standards Action or IESG Approval as defined in Sections 4.9 and 4.10 of [IANA-POLICY].

Capsule Types with a value of the form 0x29 * N + 0x17 for integer values of N are reserved to exercise the requirement that unknown Capsule Types be ignored. These Capsules have no semantics and can carry arbitrary values. These values MUST NOT be assigned by IANA and MUST NOT appear in the listing of assigned values.

This registry initially contains the following entry:

  • Value: 0x00
  • Capsule Type: DATAGRAM
  • Status: permanent
  • Reference: RFC 9297
  • Change Controller: IETF
  • Contact: MASQUE Working Group <[email protected]>
  • Notes: None
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