Mercurial > hg > nginx
annotate src/http/v3/ngx_http_v3.c @ 9331:dbf76fdd109f default tip
release-1.27.4 tag
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 03 Sep 2024 13:11:25 +0300 |
parents | 4939fd04737f |
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1 |
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2 /* |
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3 * Copyright (C) Roman Arutyunyan |
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4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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12 |
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13 static void ngx_http_v3_keepalive_handler(ngx_event_t *ev); |
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14 static void ngx_http_v3_cleanup_session(void *data); |
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15 |
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16 |
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17 ngx_int_t |
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18 ngx_http_v3_init_session(ngx_connection_t *c) |
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19 { |
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20 ngx_pool_cleanup_t *cln; |
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21 ngx_http_connection_t *hc; |
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22 ngx_http_v3_session_t *h3c; |
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23 |
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24 hc = c->data; |
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25 |
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26 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session"); |
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27 |
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28 h3c = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_session_t)); |
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29 if (h3c == NULL) { |
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30 goto failed; |
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31 } |
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32 |
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33 h3c->http_connection = hc; |
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34 |
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35 ngx_queue_init(&h3c->blocked); |
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36 |
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37 h3c->keepalive.log = c->log; |
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38 h3c->keepalive.data = c; |
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39 h3c->keepalive.handler = ngx_http_v3_keepalive_handler; |
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40 |
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41 h3c->table.send_insert_count.log = c->log; |
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42 h3c->table.send_insert_count.data = c; |
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43 h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler; |
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44 |
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45 cln = ngx_pool_cleanup_add(c->pool, 0); |
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46 if (cln == NULL) { |
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47 goto failed; |
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48 } |
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49 |
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50 cln->handler = ngx_http_v3_cleanup_session; |
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51 cln->data = h3c; |
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52 |
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53 c->data = h3c; |
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54 |
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55 return NGX_OK; |
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56 |
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57 failed: |
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58 |
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59 ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session"); |
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60 return NGX_ERROR; |
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61 } |
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62 |
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63 |
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64 static void |
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65 ngx_http_v3_keepalive_handler(ngx_event_t *ev) |
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66 { |
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67 ngx_connection_t *c; |
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68 |
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69 c = ev->data; |
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70 |
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71 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler"); |
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72 |
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73 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR, |
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74 "keepalive timeout"); |
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75 } |
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76 |
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77 |
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78 static void |
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79 ngx_http_v3_cleanup_session(void *data) |
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80 { |
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81 ngx_http_v3_session_t *h3c = data; |
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82 |
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83 ngx_http_v3_cleanup_table(h3c); |
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84 |
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85 if (h3c->keepalive.timer_set) { |
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86 ngx_del_timer(&h3c->keepalive); |
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87 } |
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88 |
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89 if (h3c->table.send_insert_count.posted) { |
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90 ngx_delete_posted_event(&h3c->table.send_insert_count); |
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91 } |
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92 } |
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93 |
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94 |
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95 ngx_int_t |
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96 ngx_http_v3_check_flood(ngx_connection_t *c) |
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97 { |
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98 ngx_http_v3_session_t *h3c; |
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99 |
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100 h3c = ngx_http_v3_get_session(c); |
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101 |
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102 if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) { |
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103 ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected"); |
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104 |
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105 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR, |
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106 "HTTP/3 flood detected"); |
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107 return NGX_ERROR; |
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108 } |
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109 |
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110 return NGX_OK; |
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111 } |