2015-02-20 2022-08-17 IETF Review or IESG Approval 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 0x0d-0x0f Unassigned 0x10 PRIORITY_UPDATE 0x11-0xff Unassigned Expert Review Martin Thomson (primary), Julian Reschke (secondary) 0x00 Reserved 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 0x09 SETTINGS_NO_RFC7540_PRIORITIES 0 0x0a-0x0f Unassigned 0x10 TLS_RENEG_PERMITTED 0x00 MS-HTTP2E 0x11-0x4d43 Unassigned 0x4d44 SETTINGS_ENABLE_METADATA 0 0x4d45-0xffff Unassigned Expert Review Martin Thomson (primary), Julian Reschke (secondary) 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 Gabriel_Montenegro mailto:gabriel.montenegro&microsoft.com 2018-08-02