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annotate src/http/v3/ngx_http_v3.c @ 8986:6546c2ae1c7b quic

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HTTP/3: unified hq code with regular HTTP/3 code. The change removes hq-specific request handler. Now hq requests are handled by the HTTP/3 request handler.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 19 Oct 2022 17:45:30 +0400
parents 81a3429db8b0
children be39ffdf9208
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8434
f4d3f5d93a82 HTTP/3: moved session initialization to a separate file.
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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 {
8986
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20 ngx_connection_t *pc;
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21 ngx_pool_cleanup_t *cln;
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22 ngx_http_connection_t *hc;
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23 ngx_http_v3_session_t *h3c;
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24 #if (NGX_HTTP_V3_HQ)
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25 ngx_http_v3_srv_conf_t *h3scf;
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26 #endif
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27
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28 pc = c->quic->parent;
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29 hc = pc->data;
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30
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31 if (hc->v3_session) {
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32 return NGX_OK;
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33 }
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34
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35 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session");
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36
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37 h3c = ngx_pcalloc(pc->pool, sizeof(ngx_http_v3_session_t));
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38 if (h3c == NULL) {
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39 goto failed;
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40 }
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41
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42 h3c->max_push_id = (uint64_t) -1;
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43 h3c->goaway_push_id = (uint64_t) -1;
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44
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45 #if (NGX_HTTP_V3_HQ)
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46 h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
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47 if (h3scf->hq) {
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48 h3c->hq = 1;
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49 }
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50 #endif
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51
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52 ngx_queue_init(&h3c->blocked);
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53 ngx_queue_init(&h3c->pushing);
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54
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55 h3c->keepalive.log = pc->log;
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56 h3c->keepalive.data = pc;
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57 h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
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58 h3c->keepalive.cancelable = 1;
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59
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60 h3c->table.send_insert_count.log = pc->log;
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61 h3c->table.send_insert_count.data = pc;
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62 h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler;
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63
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64 cln = ngx_pool_cleanup_add(pc->pool, 0);
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65 if (cln == NULL) {
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66 goto failed;
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67 }
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68
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69 cln->handler = ngx_http_v3_cleanup_session;
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70 cln->data = h3c;
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71
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72 hc->v3_session = h3c;
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73
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74 #if (NGX_HTTP_V3_HQ)
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75 if (h3c->hq) {
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76 return NGX_OK;
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77 }
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78 #endif
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79
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80 return ngx_http_v3_send_settings(c);
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81
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82 failed:
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83
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84 ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session");
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85
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86 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_INTERNAL_ERROR,
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87 "failed to create http3 session");
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88 return NGX_ERROR;
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89 }
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90
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91
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92 static void
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93 ngx_http_v3_keepalive_handler(ngx_event_t *ev)
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94 {
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95 ngx_connection_t *c;
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96
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97 c = ev->data;
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98
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99 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler");
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100
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101 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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102 "keepalive timeout");
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103 }
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104
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105
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106 static void
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107 ngx_http_v3_cleanup_session(void *data)
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108 {
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109 ngx_http_v3_session_t *h3c = data;
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110
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6e2c23481abb HTTP/3: clean up table from session cleanup handler.
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111 ngx_http_v3_cleanup_table(h3c);
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112
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113 if (h3c->keepalive.timer_set) {
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114 ngx_del_timer(&h3c->keepalive);
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115 }
8824
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116
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117 if (h3c->table.send_insert_count.posted) {
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118 ngx_delete_posted_event(&h3c->table.send_insert_count);
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119 }
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120 }
8643
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121
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122
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123 ngx_int_t
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124 ngx_http_v3_check_flood(ngx_connection_t *c)
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125 {
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126 ngx_http_v3_session_t *h3c;
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127
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128 h3c = ngx_http_v3_get_session(c);
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129
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130 if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) {
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131 ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected");
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132
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133 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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134 "HTTP/3 flood detected");
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135 return NGX_ERROR;
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136 }
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137
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138 return NGX_OK;
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139 }