topic Registered
Verified 2026-09-19 · registry updated
2022-08-17HTTP registry: 0x04
SETTINGS
HTTP/2 registry values apply to binary framing, stream state, connection setup, or protocol negotiation. 0x04 is registered in HTTP/2 Frame Type. Defining reference: RFC9113, Section 6.5.
httpregistryhttp2-parametersframe-type
Identifier (http)
0x04
SETTINGS
Do not serialize HTTP/2 control values as ordinary HTTP/1.1 fields; let a compliant stack enforce ordering, stream state, and bounds.
This registry value is currently marked active by IANA. Follow the defining specification before sending, accepting, or proxying it.
IANA registry: http2-parameters/frame-type
Registry reference: RFC9113, Section 6.5