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annotate src/http/v3/ngx_http_v3.c @ 9066:eaa8dc3788e1 quic

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HTTP/3: trigger 400 (Bad Request) on stream error while blocked. Previously, stream was closed with NGX_HTTP_CLOSE. However, in a similar case when recv() returns eof or error, status 400 is triggered.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 05 Jan 2023 18:15:46 +0400
parents b0c2234aaa9f
children c851a2ed5ce8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8774
f4d3f5d93a82 HTTP/3: moved session initialization to a separate file.
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1
f4d3f5d93a82 HTTP/3: moved session initialization to a separate file.
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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 {
9054
6546c2ae1c7b HTTP/3: unified hq code with regular HTTP/3 code.
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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 #if (NGX_HTTP_V3_HQ)
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24 ngx_http_v3_srv_conf_t *h3scf;
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25 #endif
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26
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27 hc = c->data;
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28
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29 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session");
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30
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31 h3c = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_session_t));
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32 if (h3c == NULL) {
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33 goto failed;
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34 }
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35
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36 h3c->max_push_id = (uint64_t) -1;
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37 h3c->goaway_push_id = (uint64_t) -1;
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38
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39 #if (NGX_HTTP_V3_HQ)
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40 h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
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41 if (h3scf->hq) {
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42 h3c->hq = 1;
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43 }
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44 #endif
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45
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46 ngx_queue_init(&h3c->blocked);
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47 ngx_queue_init(&h3c->pushing);
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48
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49 h3c->keepalive.log = c->log;
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50 h3c->keepalive.data = c;
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51 h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
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52
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53 h3c->table.send_insert_count.log = c->log;
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54 h3c->table.send_insert_count.data = c;
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55 h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler;
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56
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57 cln = ngx_pool_cleanup_add(c->pool, 0);
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58 if (cln == NULL) {
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59 goto failed;
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60 }
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61
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62 cln->handler = ngx_http_v3_cleanup_session;
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63 cln->data = h3c;
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64
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65 hc->v3_session = h3c;
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66
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67 return NGX_OK;
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68
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69 failed:
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70
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71 ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session");
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72
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73 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_INTERNAL_ERROR,
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74 "failed to create http3 session");
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75 return NGX_ERROR;
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76 }
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77
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78
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79 static void
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80 ngx_http_v3_keepalive_handler(ngx_event_t *ev)
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81 {
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82 ngx_connection_t *c;
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83
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84 c = ev->data;
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85
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86 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler");
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87
8988
6434160b4b78 QUIC: allowed main QUIC connection for some operations.
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88 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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89 "keepalive timeout");
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90 }
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91
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92
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93 static void
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94 ngx_http_v3_cleanup_session(void *data)
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95 {
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96 ngx_http_v3_session_t *h3c = data;
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97
8775
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98 ngx_http_v3_cleanup_table(h3c);
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99
8774
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100 if (h3c->keepalive.timer_set) {
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101 ngx_del_timer(&h3c->keepalive);
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102 }
8989
81a3429db8b0 HTTP/3: delayed Insert Count Increment instruction.
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103
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104 if (h3c->table.send_insert_count.posted) {
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105 ngx_delete_posted_event(&h3c->table.send_insert_count);
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106 }
8774
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107 }
8881
72b304f6207c HTTP/3: traffic-based flood detection.
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108
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109
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110 ngx_int_t
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111 ngx_http_v3_check_flood(ngx_connection_t *c)
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112 {
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113 ngx_http_v3_session_t *h3c;
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114
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115 h3c = ngx_http_v3_get_session(c);
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116
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117 if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) {
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118 ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected");
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119
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120 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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121 "HTTP/3 flood detected");
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122 return NGX_ERROR;
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123 }
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124
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125 return NGX_OK;
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126 }