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annotate src/http/v3/ngx_http_v3.c @ 9108:f742b1b46901 quic

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HTTP/3: removed server push support.
author Roman Arutyunyan <arut@nginx.com>
date Fri, 12 May 2023 10:02:10 +0400
parents 394e9a2cefc4
children 4939fd04737f
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8774
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 {
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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 ngx_queue_init(&h3c->blocked);
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34
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35 h3c->keepalive.log = c->log;
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36 h3c->keepalive.data = c;
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37 h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
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38
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39 h3c->table.send_insert_count.log = c->log;
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40 h3c->table.send_insert_count.data = c;
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41 h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler;
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42
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43 cln = ngx_pool_cleanup_add(c->pool, 0);
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44 if (cln == NULL) {
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45 goto failed;
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46 }
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47
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48 cln->handler = ngx_http_v3_cleanup_session;
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49 cln->data = h3c;
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50
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51 hc->v3_session = h3c;
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52
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53 return NGX_OK;
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54
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55 failed:
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56
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57 ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session");
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58 return NGX_ERROR;
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59 }
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60
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61
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62 static void
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63 ngx_http_v3_keepalive_handler(ngx_event_t *ev)
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64 {
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65 ngx_connection_t *c;
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66
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67 c = ev->data;
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68
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69 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler");
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70
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71 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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72 "keepalive timeout");
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73 }
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74
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75
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76 static void
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77 ngx_http_v3_cleanup_session(void *data)
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78 {
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79 ngx_http_v3_session_t *h3c = data;
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80
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81 ngx_http_v3_cleanup_table(h3c);
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82
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83 if (h3c->keepalive.timer_set) {
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84 ngx_del_timer(&h3c->keepalive);
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85 }
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86
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87 if (h3c->table.send_insert_count.posted) {
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88 ngx_delete_posted_event(&h3c->table.send_insert_count);
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89 }
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90 }
8881
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91
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92
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93 ngx_int_t
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94 ngx_http_v3_check_flood(ngx_connection_t *c)
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95 {
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96 ngx_http_v3_session_t *h3c;
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97
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98 h3c = ngx_http_v3_get_session(c);
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99
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100 if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) {
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101 ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected");
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102
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103 ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
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104 "HTTP/3 flood detected");
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105 return NGX_ERROR;
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106 }
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107
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108 return NGX_OK;
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109 }