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annotate src/http/v3/ngx_http_v3.c @ 9081:c851a2ed5ce8 quic

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HTTP/3: "quic" parameter of "listen" directive. Now "listen" directve has a new "quic" parameter which enables QUIC protocol for the address. Further, to enable HTTP/3, a new directive "http3" is introduced. The hq-interop protocol is enabled by "http3_hq" as before. Now application protocol is chosen by ALPN. Previously used "http3" parameter of "listen" is deprecated.
author Roman Arutyunyan <arut@nginx.com>
date Mon, 27 Feb 2023 14:00:56 +0400
parents b0c2234aaa9f
children 394e9a2cefc4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8774
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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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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->max_push_id = (uint64_t) -1;
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34 h3c->goaway_push_id = (uint64_t) -1;
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35
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36 ngx_queue_init(&h3c->blocked);
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37 ngx_queue_init(&h3c->pushing);
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38
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39 h3c->keepalive.log = c->log;
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40 h3c->keepalive.data = c;
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41 h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
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42
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43 h3c->table.send_insert_count.log = c->log;
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44 h3c->table.send_insert_count.data = c;
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45 h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler;
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46
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47 cln = ngx_pool_cleanup_add(c->pool, 0);
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48 if (cln == NULL) {
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49 goto failed;
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50 }
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51
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52 cln->handler = ngx_http_v3_cleanup_session;
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53 cln->data = h3c;
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54
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55 hc->v3_session = h3c;
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56
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57 return NGX_OK;
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58
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59 failed:
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60
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61 ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session");
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62
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63 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_INTERNAL_ERROR,
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64 "failed to create http3 session");
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65 return NGX_ERROR;
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66 }
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67
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68
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69 static void
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70 ngx_http_v3_keepalive_handler(ngx_event_t *ev)
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71 {
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72 ngx_connection_t *c;
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73
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74 c = ev->data;
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75
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76 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler");
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77
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78 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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79 "keepalive timeout");
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80 }
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81
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82
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83 static void
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84 ngx_http_v3_cleanup_session(void *data)
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85 {
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86 ngx_http_v3_session_t *h3c = data;
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87
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88 ngx_http_v3_cleanup_table(h3c);
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89
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90 if (h3c->keepalive.timer_set) {
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91 ngx_del_timer(&h3c->keepalive);
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92 }
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93
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94 if (h3c->table.send_insert_count.posted) {
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95 ngx_delete_posted_event(&h3c->table.send_insert_count);
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96 }
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97 }
8881
72b304f6207c HTTP/3: traffic-based flood detection.
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98
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99
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100 ngx_int_t
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101 ngx_http_v3_check_flood(ngx_connection_t *c)
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102 {
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103 ngx_http_v3_session_t *h3c;
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104
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105 h3c = ngx_http_v3_get_session(c);
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106
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107 if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) {
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108 ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected");
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109
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110 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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111 "HTTP/3 flood detected");
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112 return NGX_ERROR;
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113 }
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114
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115 return NGX_OK;
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116 }