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/*
* include/haproxy/h3.h
* This file contains types for H3
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _HAPROXY_H3_T_H
#define _HAPROXY_H3_T_H
#ifdef USE_QUIC
#ifndef USE_OPENSSL
#error "Must define USE_OPENSSL"
#endif
#include <haproxy/buf-t.h>
#include <haproxy/mux_quic-t.h>
/* H3 unidirecational stream types
* Emitted as the first byte on the stream to differentiate it.
*/
#define H3_UNI_S_T_CTRL 0x00
#define H3_UNI_S_T_PUSH 0x01
#define H3_UNI_S_T_QPACK_ENC 0x02
#define H3_UNI_S_T_QPACK_DEC 0x03
/* Must be the last one */
#define H3_UNI_S_T_MAX H3_UNI_S_T_QPACK_DEC
/* Settings */
#define H3_SETTINGS_RESERVED_0 0x00
#define H3_SETTINGS_QPACK_MAX_TABLE_CAPACITY 0x01
/* there is a hole here of reserved settings, matching the h2 settings */
#define H3_SETTINGS_RESERVED_2 0x02
#define H3_SETTINGS_RESERVED_3 0x03
#define H3_SETTINGS_RESERVED_4 0x04
#define H3_SETTINGS_RESERVED_5 0x05
#define H3_SETTINGS_MAX_FIELD_SECTION_SIZE 0x06
#define H3_SETTINGS_QPACK_BLOCKED_STREAMS 0x07
/* Errors. */
enum h3_err {
H3_NO_ERROR = 0x100,
H3_GENERAL_PROTOCOL_ERROR = 0x101,
H3_INTERNAL_ERROR = 0x102,
H3_STREAM_CREATION_ERROR = 0x103,
H3_CLOSED_CRITICAL_STREAM = 0x104,
H3_FRAME_UNEXPECTED = 0x105,
H3_FRAME_ERROR = 0x106,
H3_EXCESSIVE_LOAD = 0x107,
H3_ID_ERROR = 0x108,
H3_SETTINGS_ERROR = 0x109,
H3_MISSING_SETTINGS = 0x10a,
H3_REQUEST_REJECTED = 0x10b,
H3_REQUEST_CANCELLED = 0x10c,
H3_REQUEST_INCOMPLETE = 0x10d,
H3_MESSAGE_ERROR = 0x10e,
H3_CONNECT_ERROR = 0x10f,
H3_VERSION_FALLBACK = 0x110,
QPACK_DECOMPRESSION_FAILED = 0x200,
QPACK_ENCODER_STREAM_ERROR = 0x201,
QPACK_DECODER_STREAM_ERROR = 0x202,
};
/* Frame types. */
enum h3_ft {
/* internal value used to mark demuxing as inactive */
H3_FT_UNINIT = -1,
H3_FT_DATA = 0x00,
H3_FT_HEADERS = 0x01,
/* hole */
H3_FT_CANCEL_PUSH = 0x03,
H3_FT_SETTINGS = 0x04,
H3_FT_PUSH_PROMISE = 0x05,
/* hole */
H3_FT_GOAWAY = 0x07,
/* hole */
H3_FT_MAX_PUSH_ID = 0x0d,
};
/* Stream types */
enum h3s_t {
/* unidirectional streams */
H3S_T_CTRL,
H3S_T_PUSH,
H3S_T_QPACK_DEC,
H3S_T_QPACK_ENC,
/* bidirectional streams */
H3S_T_REQ,
H3S_T_UNKNOWN
};
/* State for request streams */
enum h3s_st_req {
H3S_ST_REQ_BEFORE = 0, /* initial state */
H3S_ST_REQ_HEADERS, /* header section received */
H3S_ST_REQ_DATA, /* first DATA frame for content received */
H3S_ST_REQ_TRAILERS, /* trailer section received */
};
extern const struct qcc_app_ops h3_ops;
#endif /* USE_QUIC */
#endif /* _HAPROXY_H3_T_H */
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