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view src/http/v3/ngx_http_v3_table.h @ 9153:8f7e6d8c061e

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QUIC: use last client dcid to receive initial packets. Previously, original dcid was used to receive initial client packets in case server initial response was lost. However, last dcid should be used instead. These two are the same unless retry is used. In case of retry, client resends initial packet with a new dcid, that is different from the original dcid. If server response is lost, the client resends this packet again with the same dcid. This is shown in RFC 9000, 7.3. Authenticating Connection IDs, Figure 8. The issue manifested itself with creating multiple server sessions in response to each post-retry client initial packet, if server response is lost.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 30 Aug 2023 11:09:21 +0400
parents 81a3429db8b0
children
line wrap: on
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/*
 * Copyright (C) Roman Arutyunyan
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_HTTP_V3_TABLE_H_INCLUDED_
#define _NGX_HTTP_V3_TABLE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>


typedef struct {
    ngx_str_t                     name;
    ngx_str_t                     value;
} ngx_http_v3_field_t;


typedef struct {
    ngx_http_v3_field_t         **elts;
    ngx_uint_t                    nelts;
    ngx_uint_t                    base;
    size_t                        size;
    size_t                        capacity;
    uint64_t                      insert_count;
    uint64_t                      ack_insert_count;
    ngx_event_t                   send_insert_count;
} ngx_http_v3_dynamic_table_t;


void ngx_http_v3_inc_insert_count_handler(ngx_event_t *ev);
void ngx_http_v3_cleanup_table(ngx_http_v3_session_t *h3c);
ngx_int_t ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
    ngx_uint_t index, ngx_str_t *value);
ngx_int_t ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name,
    ngx_str_t *value);
ngx_int_t ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity);
ngx_int_t ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index);
ngx_int_t ngx_http_v3_ack_section(ngx_connection_t *c, ngx_uint_t stream_id);
ngx_int_t ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc);
ngx_int_t ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index,
    ngx_str_t *name, ngx_str_t *value);
ngx_int_t ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index,
    ngx_str_t *name, ngx_str_t *value);
ngx_int_t ngx_http_v3_decode_insert_count(ngx_connection_t *c,
    ngx_uint_t *insert_count);
ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c,
    ngx_uint_t insert_count);
void ngx_http_v3_ack_insert_count(ngx_connection_t *c, uint64_t insert_count);
ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id,
    uint64_t value);


#endif /* _NGX_HTTP_V3_TABLE_H_INCLUDED_ */