Mercurial > hg > nginx-quic
annotate src/core/ngx_radix_tree.h @ 8551:c35b255d80dc quic
HTTP/3: close connection on keepalive_requests * 2.
After receiving GOAWAY, client is not supposed to create new streams. However,
until client reads this frame, we allow it to create new streams, which are
gracefully rejected. To prevent client from abusing this algorithm, a new
limit is introduced. Upon reaching keepalive_requests * 2, server now closes
the entire QUIC connection claiming excessive load.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Thu, 29 Jul 2021 16:01:37 +0300 |
parents | 3be3de31d7dd |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_RADIX_TREE_H_INCLUDED_ |
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9 #define _NGX_RADIX_TREE_H_INCLUDED_ |
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11 |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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485 | 16 #define NGX_RADIX_NO_VALUE (uintptr_t) -1 |
17 | |
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18 typedef struct ngx_radix_node_s ngx_radix_node_t; |
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19 |
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20 struct ngx_radix_node_s { |
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21 ngx_radix_node_t *right; |
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22 ngx_radix_node_t *left; |
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23 ngx_radix_node_t *parent; |
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24 uintptr_t value; |
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25 }; |
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26 |
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27 |
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28 typedef struct { |
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29 ngx_radix_node_t *root; |
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30 ngx_pool_t *pool; |
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31 ngx_radix_node_t *free; |
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32 char *start; |
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33 size_t size; |
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34 } ngx_radix_tree_t; |
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35 |
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36 |
487 | 37 ngx_radix_tree_t *ngx_radix_tree_create(ngx_pool_t *pool, |
489 | 38 ngx_int_t preallocate); |
4992 | 39 |
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40 ngx_int_t ngx_radix32tree_insert(ngx_radix_tree_t *tree, |
487 | 41 uint32_t key, uint32_t mask, uintptr_t value); |
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42 ngx_int_t ngx_radix32tree_delete(ngx_radix_tree_t *tree, |
487 | 43 uint32_t key, uint32_t mask); |
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44 uintptr_t ngx_radix32tree_find(ngx_radix_tree_t *tree, uint32_t key); |
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45 |
4992 | 46 #if (NGX_HAVE_INET6) |
47 ngx_int_t ngx_radix128tree_insert(ngx_radix_tree_t *tree, | |
48 u_char *key, u_char *mask, uintptr_t value); | |
49 ngx_int_t ngx_radix128tree_delete(ngx_radix_tree_t *tree, | |
50 u_char *key, u_char *mask); | |
51 uintptr_t ngx_radix128tree_find(ngx_radix_tree_t *tree, u_char *key); | |
52 #endif | |
53 | |
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54 |
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55 #endif /* _NGX_RADIX_TREE_H_INCLUDED_ */ |