Hypertext Transfer Protocol version 2 (HTTP/2) Parameters

Registries Included Below

HTTP/2 Frame Type

Registration Procedure(s)

IETF Review or IESG Approval

Reference

[RFC9113]

Available Formats

CSV

Registration Procedure(s)

Expert Review

Expert(s)

Martin Thomson (primary), Julian Reschke (secondary)

Reference

[RFC9113]

Available Formats

CSV

Code	Name	Initial Value	Reference
0x00	Reserved		[RFC9113]
0x01	HEADER_TABLE_SIZE	4096	[RFC9113, Section 6.5.2]
0x02	ENABLE_PUSH	1	[RFC9113, Section 6.5.2]
0x03	MAX_CONCURRENT_STREAMS	(infinite)	[RFC9113, Section 6.5.2]
0x04	INITIAL_WINDOW_SIZE	65535	[RFC9113, Section 6.5.2]
0x05	MAX_FRAME_SIZE	16384	[RFC9113, Section 6.5.2]
0x06	MAX_HEADER_LIST_SIZE	(infinite)	[RFC9113, Section 6.5.2]
0x07	Unassigned
0x08	SETTINGS_ENABLE_CONNECT_PROTOCOL	0	[RFC8441]
0x09	SETTINGS_NO_RFC7540_PRIORITIES	0	[RFC9218]
0x0a-0x0f	Unassigned
0x10	TLS_RENEG_PERMITTED	0x00	[MS-HTTP2E][Gabriel_Montenegro]
0x11-0x4d43	Unassigned
0x4d44	SETTINGS_ENABLE_METADATA	0	[draft-beky-httpbis-metadata-02]
0x4d45-0xffff	Unassigned

Registration Procedure(s)

Expert Review

Expert(s)

Martin Thomson (primary), Julian Reschke (secondary)

Reference

[RFC9113]

Available Formats

CSV

Code	Name	Description	Reference
0x00	NO_ERROR	Graceful shutdown	[RFC9113, Section 7]
0x01	PROTOCOL_ERROR	Protocol error detected	[RFC9113, Section 7]
0x02	INTERNAL_ERROR	Implementation fault	[RFC9113, Section 7]
0x03	FLOW_CONTROL_ERROR	Flow-control limits exceeded	[RFC9113, Section 7]
0x04	SETTINGS_TIMEOUT	Settings not acknowledged	[RFC9113, Section 7]
0x05	STREAM_CLOSED	Frame received for closed stream	[RFC9113, Section 7]
0x06	FRAME_SIZE_ERROR	Frame size incorrect	[RFC9113, Section 7]
0x07	REFUSED_STREAM	Stream not processed	[RFC9113, Section 7]
0x08	CANCEL	Stream cancelled	[RFC9113, Section 7]
0x09	COMPRESSION_ERROR	Compression state not updated	[RFC9113, Section 7]
0x0a	CONNECT_ERROR	TCP connection error for CONNECT method	[RFC9113, Section 7]
0x0b	ENHANCE_YOUR_CALM	Processing capacity exceeded	[RFC9113, Section 7]
0x0c	INADEQUATE_SECURITY	Negotiated TLS parameters not acceptable	[RFC9113, Section 7]
0x0d	HTTP_1_1_REQUIRED	Use HTTP/1.1 for the request	[RFC9113, Section 7]
0x0e-0xffffffff	Unassigned

ID	Name	Contact URI	Last Updated
[Gabriel_Montenegro]	Gabriel_Montenegro	mailto:gabriel.montenegro&microsoft.com	2018-08-02