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260
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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260
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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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372
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13 static ngx_int_t ngx_http_upstream_cmp_servers(const void *one,
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14 const void *two);
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674
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15 static ngx_http_upstream_rr_peer_t *ngx_http_upstream_get_peer(
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16 ngx_http_upstream_rr_peer_data_t *rrp);
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324
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17
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632
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18 #if (NGX_HTTP_SSL)
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19
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20 static ngx_int_t ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc,
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21 void *data);
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22 static void ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc,
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23 void *data);
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24
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25 #endif
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26
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324
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27
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260
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28 ngx_int_t
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29 ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
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30 ngx_http_upstream_srv_conf_t *us)
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31 {
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32 ngx_url_t u;
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676
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33 ngx_uint_t i, j, n, w;
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260
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34 ngx_http_upstream_server_t *server;
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326
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35 ngx_http_upstream_rr_peers_t *peers, *backup;
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260
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36
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37 us->peer.init = ngx_http_upstream_init_round_robin_peer;
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38
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39 if (us->servers) {
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40 server = us->servers->elts;
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41
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326
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42 n = 0;
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676
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43 w = 0;
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326
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44
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260
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45 for (i = 0; i < us->servers->nelts; i++) {
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326
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46 if (server[i].backup) {
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47 continue;
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48 }
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49
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260
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50 n += server[i].naddrs;
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676
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51 w += server[i].naddrs * server[i].weight;
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260
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52 }
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53
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670
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54 if (n == 0) {
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55 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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56 "no servers in upstream \"%V\" in %s:%ui",
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57 &us->host, us->file_name, us->line);
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58 return NGX_ERROR;
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59 }
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60
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260
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61 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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62 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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63 if (peers == NULL) {
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64 return NGX_ERROR;
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65 }
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66
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326
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67 peers->single = (n == 1);
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260
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68 peers->number = n;
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676
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69 peers->weighted = (w != n);
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70 peers->total_weight = w;
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260
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71 peers->name = &us->host;
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72
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73 n = 0;
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74
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75 for (i = 0; i < us->servers->nelts; i++) {
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76 for (j = 0; j < server[i].naddrs; j++) {
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326
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77 if (server[i].backup) {
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78 continue;
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79 }
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80
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260
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81 peers->peer[n].sockaddr = server[i].addrs[j].sockaddr;
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82 peers->peer[n].socklen = server[i].addrs[j].socklen;
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83 peers->peer[n].name = server[i].addrs[j].name;
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84 peers->peer[n].max_fails = server[i].max_fails;
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85 peers->peer[n].fail_timeout = server[i].fail_timeout;
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86 peers->peer[n].down = server[i].down;
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674
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87 peers->peer[n].weight = server[i].weight;
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88 peers->peer[n].effective_weight = server[i].weight;
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89 peers->peer[n].current_weight = 0;
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260
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90 n++;
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91 }
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92 }
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93
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94 us->peer.data = peers;
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95
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326
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96 ngx_sort(&peers->peer[0], (size_t) n,
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97 sizeof(ngx_http_upstream_rr_peer_t),
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98 ngx_http_upstream_cmp_servers);
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99
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100 /* backup servers */
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101
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102 n = 0;
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676
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103 w = 0;
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326
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104
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105 for (i = 0; i < us->servers->nelts; i++) {
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106 if (!server[i].backup) {
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107 continue;
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108 }
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109
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110 n += server[i].naddrs;
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676
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111 w += server[i].naddrs * server[i].weight;
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326
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112 }
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113
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114 if (n == 0) {
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115 return NGX_OK;
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116 }
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117
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118 backup = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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119 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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120 if (backup == NULL) {
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121 return NGX_ERROR;
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122 }
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123
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124 peers->single = 0;
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125 backup->single = 0;
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126 backup->number = n;
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676
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127 backup->weighted = (w != n);
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128 backup->total_weight = w;
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326
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129 backup->name = &us->host;
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130
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131 n = 0;
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132
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133 for (i = 0; i < us->servers->nelts; i++) {
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134 for (j = 0; j < server[i].naddrs; j++) {
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135 if (!server[i].backup) {
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136 continue;
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137 }
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138
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139 backup->peer[n].sockaddr = server[i].addrs[j].sockaddr;
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140 backup->peer[n].socklen = server[i].addrs[j].socklen;
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141 backup->peer[n].name = server[i].addrs[j].name;
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142 backup->peer[n].weight = server[i].weight;
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674
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143 backup->peer[n].effective_weight = server[i].weight;
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144 backup->peer[n].current_weight = 0;
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326
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145 backup->peer[n].max_fails = server[i].max_fails;
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146 backup->peer[n].fail_timeout = server[i].fail_timeout;
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147 backup->peer[n].down = server[i].down;
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148 n++;
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149 }
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150 }
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151
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152 peers->next = backup;
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153
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154 ngx_sort(&backup->peer[0], (size_t) n,
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155 sizeof(ngx_http_upstream_rr_peer_t),
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156 ngx_http_upstream_cmp_servers);
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157
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260
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158 return NGX_OK;
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159 }
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160
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161
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162 /* an upstream implicitly defined by proxy_pass, etc. */
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163
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266
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164 if (us->port == 0 && us->default_port == 0) {
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165 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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166 "no port in upstream \"%V\" in %s:%ui",
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336
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167 &us->host, us->file_name, us->line);
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266
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168 return NGX_ERROR;
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169 }
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170
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260
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171 ngx_memzero(&u, sizeof(ngx_url_t));
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172
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173 u.host = us->host;
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266
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174 u.port = (in_port_t) (us->port ? us->port : us->default_port);
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260
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175
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340
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176 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
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260
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177 if (u.err) {
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178 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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262
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179 "%s in upstream \"%V\" in %s:%ui",
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336
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180 u.err, &us->host, us->file_name, us->line);
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260
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181 }
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182
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183 return NGX_ERROR;
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184 }
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185
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186 n = u.naddrs;
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187
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188 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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189 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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190 if (peers == NULL) {
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191 return NGX_ERROR;
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192 }
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193
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326
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194 peers->single = (n == 1);
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260
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195 peers->number = n;
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676
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196 peers->weighted = 0;
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197 peers->total_weight = n;
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260
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198 peers->name = &us->host;
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199
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200 for (i = 0; i < u.naddrs; i++) {
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340
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201 peers->peer[i].sockaddr = u.addrs[i].sockaddr;
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202 peers->peer[i].socklen = u.addrs[i].socklen;
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203 peers->peer[i].name = u.addrs[i].name;
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204 peers->peer[i].weight = 1;
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674
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205 peers->peer[i].effective_weight = 1;
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206 peers->peer[i].current_weight = 0;
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340
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207 peers->peer[i].max_fails = 1;
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208 peers->peer[i].fail_timeout = 10;
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260
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209 }
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210
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211 us->peer.data = peers;
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212
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326
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213 /* implicitly defined upstream has no backup servers */
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214
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260
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215 return NGX_OK;
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216 }
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217
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218
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372
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219 static ngx_int_t
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326
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220 ngx_http_upstream_cmp_servers(const void *one, const void *two)
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221 {
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222 ngx_http_upstream_rr_peer_t *first, *second;
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223
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224 first = (ngx_http_upstream_rr_peer_t *) one;
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225 second = (ngx_http_upstream_rr_peer_t *) two;
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226
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227 return (first->weight < second->weight);
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228 }
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229
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230
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260
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231 ngx_int_t
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232 ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
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233 ngx_http_upstream_srv_conf_t *us)
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234 {
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235 ngx_uint_t n;
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236 ngx_http_upstream_rr_peer_data_t *rrp;
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237
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238 rrp = r->upstream->peer.data;
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239
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240 if (rrp == NULL) {
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241 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t));
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242 if (rrp == NULL) {
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243 return NGX_ERROR;
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244 }
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245
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246 r->upstream->peer.data = rrp;
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247 }
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248
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249 rrp->peers = us->peer.data;
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250 rrp->current = 0;
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251
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634
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252 n = rrp->peers->number;
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253
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254 if (rrp->peers->next && rrp->peers->next->number > n) {
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255 n = rrp->peers->next->number;
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256 }
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257
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258 if (n <= 8 * sizeof(uintptr_t)) {
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260
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259 rrp->tried = &rrp->data;
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260 rrp->data = 0;
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261
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262 } else {
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634
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263 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t));
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260
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264
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265 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t));
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266 if (rrp->tried == NULL) {
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267 return NGX_ERROR;
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268 }
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269 }
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270
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271 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer;
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272 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
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273 r->upstream->peer.tries = rrp->peers->number;
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274 #if (NGX_HTTP_SSL)
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318
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275 r->upstream->peer.set_session =
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276 ngx_http_upstream_set_round_robin_peer_session;
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277 r->upstream->peer.save_session =
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278 ngx_http_upstream_save_round_robin_peer_session;
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260
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279 #endif
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280
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281 return NGX_OK;
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282 }
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283
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284
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285 ngx_int_t
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348
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286 ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
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287 ngx_http_upstream_resolved_t *ur)
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288 {
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289 u_char *p;
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290 size_t len;
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291 ngx_uint_t i, n;
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292 struct sockaddr_in *sin;
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293 ngx_http_upstream_rr_peers_t *peers;
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294 ngx_http_upstream_rr_peer_data_t *rrp;
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295
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296 rrp = r->upstream->peer.data;
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297
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298 if (rrp == NULL) {
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299 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t));
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300 if (rrp == NULL) {
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301 return NGX_ERROR;
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302 }
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303
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304 r->upstream->peer.data = rrp;
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305 }
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306
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307 peers = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_rr_peers_t)
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308 + sizeof(ngx_http_upstream_rr_peer_t) * (ur->naddrs - 1));
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309 if (peers == NULL) {
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310 return NGX_ERROR;
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311 }
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312
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313 peers->single = (ur->naddrs == 1);
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314 peers->number = ur->naddrs;
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315 peers->name = &ur->host;
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316
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434
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317 if (ur->sockaddr) {
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318 peers->peer[0].sockaddr = ur->sockaddr;
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319 peers->peer[0].socklen = ur->socklen;
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320 peers->peer[0].name = ur->host;
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321 peers->peer[0].weight = 1;
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674
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322 peers->peer[0].effective_weight = 1;
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323 peers->peer[0].current_weight = 0;
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434
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324 peers->peer[0].max_fails = 1;
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325 peers->peer[0].fail_timeout = 10;
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348
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326
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434
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327 } else {
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328
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329 for (i = 0; i < ur->naddrs; i++) {
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348
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330
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434
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331 len = NGX_INET_ADDRSTRLEN + sizeof(":65536") - 1;
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332
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333 p = ngx_pnalloc(r->pool, len);
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334 if (p == NULL) {
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335 return NGX_ERROR;
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336 }
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348
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337
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434
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338 len = ngx_inet_ntop(AF_INET, &ur->addrs[i], p, NGX_INET_ADDRSTRLEN);
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339 len = ngx_sprintf(&p[len], ":%d", ur->port) - p;
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348
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340
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434
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341 sin = ngx_pcalloc(r->pool, sizeof(struct sockaddr_in));
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342 if (sin == NULL) {
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343 return NGX_ERROR;
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344 }
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348
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345
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434
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346 sin->sin_family = AF_INET;
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347 sin->sin_port = htons(ur->port);
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348 sin->sin_addr.s_addr = ur->addrs[i];
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349
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350 peers->peer[i].sockaddr = (struct sockaddr *) sin;
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351 peers->peer[i].socklen = sizeof(struct sockaddr_in);
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352 peers->peer[i].name.len = len;
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353 peers->peer[i].name.data = p;
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354 peers->peer[i].weight = 1;
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674
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355 peers->peer[i].effective_weight = 1;
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356 peers->peer[i].current_weight = 0;
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434
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357 peers->peer[i].max_fails = 1;
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358 peers->peer[i].fail_timeout = 10;
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359 }
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348
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360 }
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361
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362 rrp->peers = peers;
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363 rrp->current = 0;
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364
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365 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) {
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366 rrp->tried = &rrp->data;
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367 rrp->data = 0;
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368
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369 } else {
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370 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1))
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371 / (8 * sizeof(uintptr_t));
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372
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373 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t));
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374 if (rrp->tried == NULL) {
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375 return NGX_ERROR;
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376 }
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377 }
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378
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379 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer;
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380 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
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381 r->upstream->peer.tries = rrp->peers->number;
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|
|
382 #if (NGX_HTTP_SSL)
|
|
632
|
383 r->upstream->peer.set_session = ngx_http_upstream_empty_set_session;
|
|
|
384 r->upstream->peer.save_session = ngx_http_upstream_empty_save_session;
|
|
348
|
385 #endif
|
|
|
386
|
|
|
387 return NGX_OK;
|
|
|
388 }
|
|
|
389
|
|
|
390
|
|
|
391 ngx_int_t
|
|
260
|
392 ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data)
|
|
|
393 {
|
|
|
394 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
|
395
|
|
326
|
396 ngx_int_t rc;
|
|
|
397 ngx_uint_t i, n;
|
|
|
398 ngx_connection_t *c;
|
|
|
399 ngx_http_upstream_rr_peer_t *peer;
|
|
|
400 ngx_http_upstream_rr_peers_t *peers;
|
|
260
|
401
|
|
|
402 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
|
403 "get rr peer, try: %ui", pc->tries);
|
|
|
404
|
|
|
405 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
|
406
|
|
|
407 if (rrp->peers->last_cached) {
|
|
|
408
|
|
|
409 /* cached connection */
|
|
|
410
|
|
|
411 c = rrp->peers->cached[rrp->peers->last_cached];
|
|
|
412 rrp->peers->last_cached--;
|
|
|
413
|
|
|
414 /* ngx_unlock_mutex(ppr->peers->mutex); */
|
|
|
415
|
|
|
416 #if (NGX_THREADS)
|
|
|
417 c->read->lock = c->read->own_lock;
|
|
|
418 c->write->lock = c->write->own_lock;
|
|
|
419 #endif
|
|
|
420
|
|
|
421 pc->connection = c;
|
|
|
422 pc->cached = 1;
|
|
|
423
|
|
|
424 return NGX_OK;
|
|
|
425 }
|
|
|
426
|
|
|
427 pc->cached = 0;
|
|
|
428 pc->connection = NULL;
|
|
|
429
|
|
326
|
430 if (rrp->peers->single) {
|
|
260
|
431 peer = &rrp->peers->peer[0];
|
|
|
432
|
|
|
433 } else {
|
|
|
434
|
|
|
435 /* there are several peers */
|
|
|
436
|
|
674
|
437 peer = ngx_http_upstream_get_peer(rrp);
|
|
260
|
438
|
|
674
|
439 if (peer == NULL) {
|
|
|
440 goto failed;
|
|
260
|
441 }
|
|
|
442
|
|
674
|
443 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
|
444 "get rr peer, current: %ui %i",
|
|
|
445 rrp->current, peer->current_weight);
|
|
260
|
446 }
|
|
|
447
|
|
|
448 pc->sockaddr = peer->sockaddr;
|
|
|
449 pc->socklen = peer->socklen;
|
|
|
450 pc->name = &peer->name;
|
|
|
451
|
|
|
452 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
|
453
|
|
326
|
454 if (pc->tries == 1 && rrp->peers->next) {
|
|
|
455 pc->tries += rrp->peers->next->number;
|
|
|
456 }
|
|
|
457
|
|
260
|
458 return NGX_OK;
|
|
|
459
|
|
|
460 failed:
|
|
|
461
|
|
326
|
462 peers = rrp->peers;
|
|
|
463
|
|
|
464 if (peers->next) {
|
|
|
465
|
|
|
466 /* ngx_unlock_mutex(peers->mutex); */
|
|
|
467
|
|
|
468 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, "backup servers");
|
|
|
469
|
|
|
470 rrp->peers = peers->next;
|
|
|
471 pc->tries = rrp->peers->number;
|
|
|
472
|
|
|
473 n = rrp->peers->number / (8 * sizeof(uintptr_t)) + 1;
|
|
|
474 for (i = 0; i < n; i++) {
|
|
|
475 rrp->tried[i] = 0;
|
|
|
476 }
|
|
|
477
|
|
|
478 rc = ngx_http_upstream_get_round_robin_peer(pc, rrp);
|
|
|
479
|
|
|
480 if (rc != NGX_BUSY) {
|
|
|
481 return rc;
|
|
|
482 }
|
|
|
483
|
|
|
484 /* ngx_lock_mutex(peers->mutex); */
|
|
|
485 }
|
|
|
486
|
|
260
|
487 /* all peers failed, mark them as live for quick recovery */
|
|
|
488
|
|
326
|
489 for (i = 0; i < peers->number; i++) {
|
|
|
490 peers->peer[i].fails = 0;
|
|
260
|
491 }
|
|
|
492
|
|
326
|
493 /* ngx_unlock_mutex(peers->mutex); */
|
|
260
|
494
|
|
326
|
495 pc->name = peers->name;
|
|
260
|
496
|
|
|
497 return NGX_BUSY;
|
|
|
498 }
|
|
|
499
|
|
|
500
|
|
674
|
501 static ngx_http_upstream_rr_peer_t *
|
|
|
502 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peer_data_t *rrp)
|
|
324
|
503 {
|
|
674
|
504 time_t now;
|
|
|
505 uintptr_t m;
|
|
|
506 ngx_int_t total;
|
|
|
507 ngx_uint_t i, n;
|
|
|
508 ngx_http_upstream_rr_peer_t *peer, *best;
|
|
324
|
509
|
|
674
|
510 now = ngx_time();
|
|
324
|
511
|
|
674
|
512 best = NULL;
|
|
|
513 total = 0;
|
|
324
|
514
|
|
674
|
515 for (i = 0; i < rrp->peers->number; i++) {
|
|
324
|
516
|
|
674
|
517 n = i / (8 * sizeof(uintptr_t));
|
|
|
518 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t));
|
|
324
|
519
|
|
674
|
520 if (rrp->tried[n] & m) {
|
|
|
521 continue;
|
|
|
522 }
|
|
324
|
523
|
|
674
|
524 peer = &rrp->peers->peer[i];
|
|
324
|
525
|
|
674
|
526 if (peer->down) {
|
|
|
527 continue;
|
|
324
|
528 }
|
|
|
529
|
|
674
|
530 if (peer->max_fails
|
|
|
531 && peer->fails >= peer->max_fails
|
|
|
532 && now - peer->checked <= peer->fail_timeout)
|
|
|
533 {
|
|
|
534 continue;
|
|
|
535 }
|
|
|
536
|
|
|
537 peer->current_weight += peer->effective_weight;
|
|
|
538 total += peer->effective_weight;
|
|
|
539
|
|
|
540 if (peer->effective_weight < peer->weight) {
|
|
|
541 peer->effective_weight++;
|
|
634
|
542 }
|
|
|
543
|
|
674
|
544 if (best == NULL || peer->current_weight > best->current_weight) {
|
|
|
545 best = peer;
|
|
324
|
546 }
|
|
|
547 }
|
|
674
|
548
|
|
|
549 if (best == NULL) {
|
|
|
550 return NULL;
|
|
|
551 }
|
|
|
552
|
|
|
553 i = best - &rrp->peers->peer[0];
|
|
|
554
|
|
|
555 rrp->current = i;
|
|
|
556
|
|
|
557 n = i / (8 * sizeof(uintptr_t));
|
|
|
558 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t));
|
|
|
559
|
|
|
560 rrp->tried[n] |= m;
|
|
|
561
|
|
|
562 best->current_weight -= total;
|
|
|
563 best->checked = now;
|
|
|
564
|
|
|
565 return best;
|
|
324
|
566 }
|
|
|
567
|
|
|
568
|
|
260
|
569 void
|
|
|
570 ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data,
|
|
|
571 ngx_uint_t state)
|
|
|
572 {
|
|
|
573 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
|
574
|
|
|
575 time_t now;
|
|
|
576 ngx_http_upstream_rr_peer_t *peer;
|
|
|
577
|
|
|
578 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
|
579 "free rr peer %ui %ui", pc->tries, state);
|
|
|
580
|
|
|
581 if (state == 0 && pc->tries == 0) {
|
|
|
582 return;
|
|
|
583 }
|
|
|
584
|
|
|
585 /* TODO: NGX_PEER_KEEPALIVE */
|
|
|
586
|
|
326
|
587 if (rrp->peers->single) {
|
|
260
|
588 pc->tries = 0;
|
|
|
589 return;
|
|
|
590 }
|
|
|
591
|
|
644
|
592 peer = &rrp->peers->peer[rrp->current];
|
|
|
593
|
|
260
|
594 if (state & NGX_PEER_FAILED) {
|
|
|
595 now = ngx_time();
|
|
|
596
|
|
|
597 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
|
598
|
|
|
599 peer->fails++;
|
|
|
600 peer->accessed = now;
|
|
644
|
601 peer->checked = now;
|
|
260
|
602
|
|
400
|
603 if (peer->max_fails) {
|
|
674
|
604 peer->effective_weight -= peer->weight / peer->max_fails;
|
|
400
|
605 }
|
|
324
|
606
|
|
|
607 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
|
608 "free rr peer failed: %ui %i",
|
|
674
|
609 rrp->current, peer->effective_weight);
|
|
324
|
610
|
|
674
|
611 if (peer->effective_weight < 0) {
|
|
|
612 peer->effective_weight = 0;
|
|
260
|
613 }
|
|
|
614
|
|
|
615 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
644
|
616
|
|
|
617 } else {
|
|
|
618
|
|
|
619 /* mark peer live if check passed */
|
|
|
620
|
|
|
621 if (peer->accessed < peer->checked) {
|
|
|
622 peer->fails = 0;
|
|
|
623 }
|
|
260
|
624 }
|
|
|
625
|
|
|
626 if (pc->tries) {
|
|
|
627 pc->tries--;
|
|
|
628 }
|
|
|
629
|
|
|
630 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
|
631 }
|
|
|
632
|
|
|
633
|
|
|
634 #if (NGX_HTTP_SSL)
|
|
|
635
|
|
318
|
636 ngx_int_t
|
|
|
637 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
|
638 void *data)
|
|
260
|
639 {
|
|
|
640 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
|
641
|
|
318
|
642 ngx_int_t rc;
|
|
260
|
643 ngx_ssl_session_t *ssl_session;
|
|
|
644 ngx_http_upstream_rr_peer_t *peer;
|
|
|
645
|
|
318
|
646 peer = &rrp->peers->peer[rrp->current];
|
|
|
647
|
|
|
648 /* TODO: threads only mutex */
|
|
|
649 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
|
650
|
|
|
651 ssl_session = peer->ssl_session;
|
|
|
652
|
|
|
653 rc = ngx_ssl_set_session(pc->connection, ssl_session);
|
|
|
654
|
|
|
655 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
332
|
656 "set session: %p:%d",
|
|
|
657 ssl_session, ssl_session ? ssl_session->references : 0);
|
|
318
|
658
|
|
|
659 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
|
660
|
|
|
661 return rc;
|
|
|
662 }
|
|
|
663
|
|
|
664
|
|
|
665 void
|
|
|
666 ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
|
667 void *data)
|
|
|
668 {
|
|
|
669 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
|
670
|
|
|
671 ngx_ssl_session_t *old_ssl_session, *ssl_session;
|
|
|
672 ngx_http_upstream_rr_peer_t *peer;
|
|
|
673
|
|
260
|
674 ssl_session = ngx_ssl_get_session(pc->connection);
|
|
|
675
|
|
|
676 if (ssl_session == NULL) {
|
|
|
677 return;
|
|
|
678 }
|
|
|
679
|
|
318
|
680 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
332
|
681 "save session: %p:%d", ssl_session, ssl_session->references);
|
|
318
|
682
|
|
260
|
683 peer = &rrp->peers->peer[rrp->current];
|
|
|
684
|
|
318
|
685 /* TODO: threads only mutex */
|
|
260
|
686 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
318
|
687
|
|
|
688 old_ssl_session = peer->ssl_session;
|
|
260
|
689 peer->ssl_session = ssl_session;
|
|
318
|
690
|
|
260
|
691 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
|
692
|
|
318
|
693 if (old_ssl_session) {
|
|
|
694
|
|
|
695 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
332
|
696 "old session: %p:%d",
|
|
318
|
697 old_ssl_session, old_ssl_session->references);
|
|
|
698
|
|
260
|
699 /* TODO: may block */
|
|
318
|
700
|
|
|
701 ngx_ssl_free_session(old_ssl_session);
|
|
260
|
702 }
|
|
|
703 }
|
|
|
704
|
|
632
|
705
|
|
|
706 static ngx_int_t
|
|
|
707 ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data)
|
|
|
708 {
|
|
|
709 return NGX_OK;
|
|
|
710 }
|
|
|
711
|
|
|
712
|
|
|
713 static void
|
|
|
714 ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data)
|
|
|
715 {
|
|
|
716 return;
|
|
|
717 }
|
|
|
718
|
|
260
|
719 #endif
|
