/*
* Copyright (C) Roman Arutyunyan
* Copyright (C) Nginx, Inc.
*/
#ifndef _NGX_HTTP_V3_H_INCLUDED_
#define _NGX_HTTP_V3_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <ngx_http_v3_parse.h>
#include <ngx_http_v3_encode.h>
#include <ngx_http_v3_uni.h>
#include <ngx_http_v3_table.h>
#define NGX_HTTP_V3_ALPN_PROTO "\x02h3"
#define NGX_HTTP_V3_HQ_ALPN_PROTO "\x0Ahq-interop"
#define NGX_HTTP_V3_HQ_PROTO "hq-interop"
#define NGX_HTTP_V3_VARLEN_INT_LEN 4
#define NGX_HTTP_V3_PREFIX_INT_LEN 11
#define NGX_HTTP_V3_STREAM_CONTROL 0x00
#define NGX_HTTP_V3_STREAM_PUSH 0x01
#define NGX_HTTP_V3_STREAM_ENCODER 0x02
#define NGX_HTTP_V3_STREAM_DECODER 0x03
#define NGX_HTTP_V3_FRAME_DATA 0x00
#define NGX_HTTP_V3_FRAME_HEADERS 0x01
#define NGX_HTTP_V3_FRAME_CANCEL_PUSH 0x03
#define NGX_HTTP_V3_FRAME_SETTINGS 0x04
#define NGX_HTTP_V3_FRAME_PUSH_PROMISE 0x05
#define NGX_HTTP_V3_FRAME_GOAWAY 0x07
#define NGX_HTTP_V3_FRAME_MAX_PUSH_ID 0x0d
#define NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY 0x01
#define NGX_HTTP_V3_PARAM_MAX_FIELD_SECTION_SIZE 0x06
#define NGX_HTTP_V3_PARAM_BLOCKED_STREAMS 0x07
#define NGX_HTTP_V3_MAX_TABLE_CAPACITY 4096
#define NGX_HTTP_V3_STREAM_CLIENT_CONTROL 0
#define NGX_HTTP_V3_STREAM_SERVER_CONTROL 1
#define NGX_HTTP_V3_STREAM_CLIENT_ENCODER 2
#define NGX_HTTP_V3_STREAM_SERVER_ENCODER 3
#define NGX_HTTP_V3_STREAM_CLIENT_DECODER 4
#define NGX_HTTP_V3_STREAM_SERVER_DECODER 5
#define NGX_HTTP_V3_MAX_KNOWN_STREAM 6
#define NGX_HTTP_V3_MAX_UNI_STREAMS 3
/* HTTP/3 errors */
#define NGX_HTTP_V3_ERR_NO_ERROR 0x100
#define NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR 0x101
#define NGX_HTTP_V3_ERR_INTERNAL_ERROR 0x102
#define NGX_HTTP_V3_ERR_STREAM_CREATION_ERROR 0x103
#define NGX_HTTP_V3_ERR_CLOSED_CRITICAL_STREAM 0x104
#define NGX_HTTP_V3_ERR_FRAME_UNEXPECTED 0x105
#define NGX_HTTP_V3_ERR_FRAME_ERROR 0x106
#define NGX_HTTP_V3_ERR_EXCESSIVE_LOAD 0x107
#define NGX_HTTP_V3_ERR_ID_ERROR 0x108
#define NGX_HTTP_V3_ERR_SETTINGS_ERROR 0x109
#define NGX_HTTP_V3_ERR_MISSING_SETTINGS 0x10a
#define NGX_HTTP_V3_ERR_REQUEST_REJECTED 0x10b
#define NGX_HTTP_V3_ERR_REQUEST_CANCELLED 0x10c
#define NGX_HTTP_V3_ERR_REQUEST_INCOMPLETE 0x10d
#define NGX_HTTP_V3_ERR_CONNECT_ERROR 0x10f
#define NGX_HTTP_V3_ERR_VERSION_FALLBACK 0x110
/* QPACK errors */
#define NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED 0x200
#define NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR 0x201
#define NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR 0x202
#define ngx_http_v3_get_session(c) \
((ngx_http_v3_session_t *) ((c)->quic ? (c)->quic->parent->data \
: (c)->data))
#define ngx_http_quic_get_connection(c) \
(ngx_http_v3_get_session(c)->http_connection)
#define ngx_http_v3_get_module_loc_conf(c, module) \
ngx_http_get_module_loc_conf(ngx_http_quic_get_connection(c)->conf_ctx, \
module)
#define ngx_http_v3_get_module_srv_conf(c, module) \
ngx_http_get_module_srv_conf(ngx_http_quic_get_connection(c)->conf_ctx, \
module)
#define ngx_http_v3_finalize_connection(c, code, reason) \
ngx_quic_finalize_connection((c)->quic ? (c)->quic->parent : (c), \
code, reason)
#define ngx_http_v3_shutdown_connection(c, code, reason) \
ngx_quic_shutdown_connection((c)->quic ? (c)->quic->parent : (c), \
code, reason)
typedef struct {
ngx_flag_t enable;
ngx_flag_t enable_hq;
size_t max_table_capacity;
ngx_uint_t max_blocked_streams;
ngx_uint_t max_concurrent_streams;
ngx_quic_conf_t quic;
} ngx_http_v3_srv_conf_t;
struct ngx_http_v3_parse_s {
size_t header_limit;
ngx_http_v3_parse_headers_t headers;
ngx_http_v3_parse_data_t body;
ngx_array_t *cookies;
};
struct ngx_http_v3_session_s {
ngx_http_connection_t *http_connection;
ngx_http_v3_dynamic_table_t table;
ngx_event_t keepalive;
ngx_uint_t nrequests;
ngx_queue_t blocked;
ngx_uint_t nblocked;
uint64_t next_request_id;
off_t total_bytes;
off_t payload_bytes;
unsigned goaway:1;
unsigned hq:1;
ngx_connection_t *known_streams[NGX_HTTP_V3_MAX_KNOWN_STREAM];
};
void ngx_http_v3_init_stream(ngx_connection_t *c);
void ngx_http_v3_reset_stream(ngx_connection_t *c);
ngx_int_t ngx_http_v3_init_session(ngx_connection_t *c);
ngx_int_t ngx_http_v3_check_flood(ngx_connection_t *c);
ngx_int_t ngx_http_v3_init(ngx_connection_t *c);
void ngx_http_v3_shutdown(ngx_connection_t *c);
ngx_int_t ngx_http_v3_read_request_body(ngx_http_request_t *r);
ngx_int_t ngx_http_v3_read_unbuffered_request_body(ngx_http_request_t *r);
extern ngx_module_t ngx_http_v3_module;
#endif /* _NGX_HTTP_V3_H_INCLUDED_ */
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