Internet Assigned Numbers Authority Hypertext Transfer Protocol version 2 (HTTP/2) Parameters Created 2015-02-20 Last Updated 2022-08-17 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries included below * HTTP/2 Frame Type * HTTP/2 Settings * HTTP/2 Error Code HTTP/2 Frame Type Registration Procedure(s) IETF Review or IESG Approval Reference [RFC9113] Available Formats [IMG] CSV Code Frame Type Reference 0x00 DATA [RFC9113, Section 6.1] 0x01 HEADERS [RFC9113, Section 6.2] 0x02 PRIORITY [RFC9113, Section 6.3] 0x03 RST_STREAM [RFC9113, Section 6.4] 0x04 SETTINGS [RFC9113, Section 6.5] 0x05 PUSH_PROMISE [RFC9113, Section 6.6] 0x06 PING [RFC9113, Section 6.7] 0x07 GOAWAY [RFC9113, Section 6.8] 0x08 WINDOW_UPDATE [RFC9113, Section 6.9] 0x09 CONTINUATION [RFC9113, Section 6.10] 0x0a ALTSVC [RFC7838, Section 4] 0x0b Unassigned 0x0c ORIGIN [RFC8336] 0x0d-0x0f Unassigned 0x10 PRIORITY_UPDATE [RFC9218] 0x11-0xff Unassigned HTTP/2 Settings Registration Procedure(s) Expert Review Expert(s) Martin Thomson (primary), Julian Reschke (secondary) Reference [RFC9113] Available Formats [IMG] 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 HTTP/2 Error Code Registration Procedure(s) Expert Review Expert(s) Martin Thomson (primary), Julian Reschke (secondary) Reference [RFC9113] Available Formats [IMG] 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 Contact Information ID Name Contact URI Last Updated [Gabriel_Montenegro] Gabriel_Montenegro mailto:gabriel.montenegroµsoft.com 2018-08-02 Licensing Terms