260
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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372
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12 static ngx_int_t ngx_http_upstream_cmp_servers(const void *one,
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13 const void *two);
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324
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14 static ngx_uint_t
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15 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peers_t *peers);
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16
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17
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260
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18 ngx_int_t
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19 ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
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20 ngx_http_upstream_srv_conf_t *us)
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21 {
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22 ngx_url_t u;
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23 ngx_uint_t i, j, n;
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24 ngx_http_upstream_server_t *server;
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326
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25 ngx_http_upstream_rr_peers_t *peers, *backup;
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260
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26
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27 us->peer.init = ngx_http_upstream_init_round_robin_peer;
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28
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29 if (us->servers) {
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30 server = us->servers->elts;
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31
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326
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32 n = 0;
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33
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260
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34 for (i = 0; i < us->servers->nelts; i++) {
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326
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35 if (server[i].backup) {
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36 continue;
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37 }
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38
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260
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39 n += server[i].naddrs;
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40 }
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41
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42 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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43 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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44 if (peers == NULL) {
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45 return NGX_ERROR;
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46 }
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47
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326
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48 peers->single = (n == 1);
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260
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49 peers->number = n;
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50 peers->name = &us->host;
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51
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52 n = 0;
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53
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54 for (i = 0; i < us->servers->nelts; i++) {
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55 for (j = 0; j < server[i].naddrs; j++) {
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326
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56 if (server[i].backup) {
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57 continue;
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58 }
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59
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260
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60 peers->peer[n].sockaddr = server[i].addrs[j].sockaddr;
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61 peers->peer[n].socklen = server[i].addrs[j].socklen;
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62 peers->peer[n].name = server[i].addrs[j].name;
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63 peers->peer[n].max_fails = server[i].max_fails;
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64 peers->peer[n].fail_timeout = server[i].fail_timeout;
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65 peers->peer[n].down = server[i].down;
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326
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66 peers->peer[n].weight = server[i].down ? 0 : server[i].weight;
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67 peers->peer[n].current_weight = peers->peer[n].weight;
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260
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68 n++;
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69 }
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70 }
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71
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72 us->peer.data = peers;
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73
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326
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74 ngx_sort(&peers->peer[0], (size_t) n,
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75 sizeof(ngx_http_upstream_rr_peer_t),
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76 ngx_http_upstream_cmp_servers);
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77
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78 /* backup servers */
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79
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80 n = 0;
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81
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82 for (i = 0; i < us->servers->nelts; i++) {
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83 if (!server[i].backup) {
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84 continue;
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85 }
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86
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87 n += server[i].naddrs;
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88 }
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89
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90 if (n == 0) {
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91 return NGX_OK;
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92 }
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93
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94 backup = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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95 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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96 if (backup == NULL) {
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97 return NGX_ERROR;
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98 }
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99
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100 peers->single = 0;
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101 backup->single = 0;
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102 backup->number = n;
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103 backup->name = &us->host;
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104
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105 n = 0;
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106
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107 for (i = 0; i < us->servers->nelts; i++) {
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108 for (j = 0; j < server[i].naddrs; j++) {
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109 if (!server[i].backup) {
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110 continue;
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111 }
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112
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113 backup->peer[n].sockaddr = server[i].addrs[j].sockaddr;
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114 backup->peer[n].socklen = server[i].addrs[j].socklen;
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115 backup->peer[n].name = server[i].addrs[j].name;
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116 backup->peer[n].weight = server[i].weight;
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117 backup->peer[n].current_weight = server[i].weight;
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118 backup->peer[n].max_fails = server[i].max_fails;
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119 backup->peer[n].fail_timeout = server[i].fail_timeout;
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120 backup->peer[n].down = server[i].down;
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121 n++;
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122 }
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123 }
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124
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125 peers->next = backup;
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126
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127 ngx_sort(&backup->peer[0], (size_t) n,
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128 sizeof(ngx_http_upstream_rr_peer_t),
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129 ngx_http_upstream_cmp_servers);
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130
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260
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131 return NGX_OK;
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132 }
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133
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134
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135 /* an upstream implicitly defined by proxy_pass, etc. */
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136
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266
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137 if (us->port == 0 && us->default_port == 0) {
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138 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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139 "no port in upstream \"%V\" in %s:%ui",
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336
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140 &us->host, us->file_name, us->line);
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266
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141 return NGX_ERROR;
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142 }
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143
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260
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144 ngx_memzero(&u, sizeof(ngx_url_t));
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145
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146 u.host = us->host;
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266
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147 u.port = (in_port_t) (us->port ? us->port : us->default_port);
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260
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148
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340
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149 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
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260
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150 if (u.err) {
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151 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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262
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152 "%s in upstream \"%V\" in %s:%ui",
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336
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153 u.err, &us->host, us->file_name, us->line);
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260
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154 }
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155
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156 return NGX_ERROR;
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157 }
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158
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159 n = u.naddrs;
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160
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161 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t)
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162 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1));
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163 if (peers == NULL) {
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164 return NGX_ERROR;
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165 }
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166
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326
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167 peers->single = (n == 1);
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260
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168 peers->number = n;
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169 peers->name = &us->host;
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170
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171 for (i = 0; i < u.naddrs; i++) {
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340
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172 peers->peer[i].sockaddr = u.addrs[i].sockaddr;
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173 peers->peer[i].socklen = u.addrs[i].socklen;
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174 peers->peer[i].name = u.addrs[i].name;
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175 peers->peer[i].weight = 1;
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176 peers->peer[i].current_weight = 1;
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177 peers->peer[i].max_fails = 1;
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178 peers->peer[i].fail_timeout = 10;
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260
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179 }
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180
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181 us->peer.data = peers;
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182
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326
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183 /* implicitly defined upstream has no backup servers */
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184
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260
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185 return NGX_OK;
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186 }
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187
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188
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372
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189 static ngx_int_t
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326
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190 ngx_http_upstream_cmp_servers(const void *one, const void *two)
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191 {
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192 ngx_http_upstream_rr_peer_t *first, *second;
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193
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194 first = (ngx_http_upstream_rr_peer_t *) one;
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195 second = (ngx_http_upstream_rr_peer_t *) two;
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196
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197 return (first->weight < second->weight);
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198 }
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199
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200
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260
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201 ngx_int_t
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202 ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
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203 ngx_http_upstream_srv_conf_t *us)
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204 {
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205 ngx_uint_t n;
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206 ngx_http_upstream_rr_peer_data_t *rrp;
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207
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208 rrp = r->upstream->peer.data;
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209
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210 if (rrp == NULL) {
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211 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t));
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212 if (rrp == NULL) {
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213 return NGX_ERROR;
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214 }
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215
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216 r->upstream->peer.data = rrp;
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217 }
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218
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219 rrp->peers = us->peer.data;
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220 rrp->current = 0;
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221
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222 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) {
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223 rrp->tried = &rrp->data;
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224 rrp->data = 0;
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225
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226 } else {
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227 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1))
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228 / (8 * sizeof(uintptr_t));
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229
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230 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t));
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231 if (rrp->tried == NULL) {
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232 return NGX_ERROR;
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233 }
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234 }
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235
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236 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer;
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237 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
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238 r->upstream->peer.tries = rrp->peers->number;
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239 #if (NGX_HTTP_SSL)
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318
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240 r->upstream->peer.set_session =
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241 ngx_http_upstream_set_round_robin_peer_session;
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242 r->upstream->peer.save_session =
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243 ngx_http_upstream_save_round_robin_peer_session;
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260
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244 #endif
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245
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246 return NGX_OK;
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247 }
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248
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249
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250 ngx_int_t
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348
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251 ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
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252 ngx_http_upstream_resolved_t *ur)
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253 {
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254 u_char *p;
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255 size_t len;
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256 ngx_uint_t i, n;
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257 struct sockaddr_in *sin;
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258 ngx_http_upstream_rr_peers_t *peers;
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259 ngx_http_upstream_rr_peer_data_t *rrp;
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260
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261 rrp = r->upstream->peer.data;
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262
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263 if (rrp == NULL) {
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264 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t));
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265 if (rrp == NULL) {
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266 return NGX_ERROR;
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267 }
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268
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269 r->upstream->peer.data = rrp;
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270 }
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271
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272 peers = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_rr_peers_t)
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273 + sizeof(ngx_http_upstream_rr_peer_t) * (ur->naddrs - 1));
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274 if (peers == NULL) {
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275 return NGX_ERROR;
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276 }
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277
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278 peers->single = (ur->naddrs == 1);
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279 peers->number = ur->naddrs;
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280 peers->name = &ur->host;
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281
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282 for (i = 0; i < ur->naddrs; i++) {
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283
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284 len = INET_ADDRSTRLEN - 1 + 1 + sizeof(":65536") - 1;
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285
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382
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286 p = ngx_pnalloc(r->pool, len);
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348
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287 if (p == NULL) {
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288 return NGX_ERROR;
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289 }
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290
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291 len = ngx_inet_ntop(AF_INET, &ur->addrs[i], p, INET_ADDRSTRLEN);
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292 len = ngx_sprintf(&p[len], ":%d", ur->port) - p;
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293
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294 sin = ngx_pcalloc(r->pool, sizeof(struct sockaddr_in));
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295 if (sin == NULL) {
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296 return NGX_ERROR;
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297 }
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298
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299 sin->sin_family = AF_INET;
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300 sin->sin_port = htons(ur->port);
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301 sin->sin_addr.s_addr = ur->addrs[i];
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302
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303 peers->peer[i].sockaddr = (struct sockaddr *) sin;
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304 peers->peer[i].socklen = sizeof(struct sockaddr_in);
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305 peers->peer[i].name.len = len;
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306 peers->peer[i].name.data = p;
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307 peers->peer[i].weight = 1;
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308 peers->peer[i].current_weight = 1;
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309 peers->peer[i].max_fails = 1;
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310 peers->peer[i].fail_timeout = 10;
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311 }
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312
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313 rrp->peers = peers;
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314 rrp->current = 0;
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315
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316 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) {
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317 rrp->tried = &rrp->data;
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318 rrp->data = 0;
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319
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320 } else {
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321 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1))
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322 / (8 * sizeof(uintptr_t));
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323
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324 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t));
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325 if (rrp->tried == NULL) {
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326 return NGX_ERROR;
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327 }
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328 }
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329
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330 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer;
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331 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer;
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332 r->upstream->peer.tries = rrp->peers->number;
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333 #if (NGX_HTTP_SSL)
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334 r->upstream->peer.set_session =
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335 ngx_http_upstream_set_round_robin_peer_session;
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336 r->upstream->peer.save_session =
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337 ngx_http_upstream_save_round_robin_peer_session;
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338 #endif
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339
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340 return NGX_OK;
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341 }
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342
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343
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344 ngx_int_t
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260
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345 ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data)
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346 {
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347 ngx_http_upstream_rr_peer_data_t *rrp = data;
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348
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326
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349 time_t now;
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350 uintptr_t m;
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351 ngx_int_t rc;
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352 ngx_uint_t i, n;
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353 ngx_connection_t *c;
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354 ngx_http_upstream_rr_peer_t *peer;
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355 ngx_http_upstream_rr_peers_t *peers;
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260
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356
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357 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
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358 "get rr peer, try: %ui", pc->tries);
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359
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360 now = ngx_time();
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361
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362 /* ngx_lock_mutex(rrp->peers->mutex); */
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363
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364 if (rrp->peers->last_cached) {
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365
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366 /* cached connection */
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367
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368 c = rrp->peers->cached[rrp->peers->last_cached];
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369 rrp->peers->last_cached--;
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370
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371 /* ngx_unlock_mutex(ppr->peers->mutex); */
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372
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373 #if (NGX_THREADS)
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374 c->read->lock = c->read->own_lock;
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375 c->write->lock = c->write->own_lock;
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376 #endif
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377
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378 pc->connection = c;
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379 pc->cached = 1;
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380
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381 return NGX_OK;
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382 }
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383
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384 pc->cached = 0;
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385 pc->connection = NULL;
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386
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326
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387 if (rrp->peers->single) {
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260
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388 peer = &rrp->peers->peer[0];
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389
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390 } else {
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391
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392 /* there are several peers */
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393
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394 if (pc->tries == rrp->peers->number) {
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395
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396 /* it's a first try - get a current peer */
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397
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330
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398 i = pc->tries;
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399
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260
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400 for ( ;; ) {
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324
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401 rrp->current = ngx_http_upstream_get_peer(rrp->peers);
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402
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403 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
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404 "get rr peer, current: %ui %i",
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405 rrp->current,
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406 rrp->peers->peer[rrp->current].current_weight);
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260
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407
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408 n = rrp->current / (8 * sizeof(uintptr_t));
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302
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409 m = (uintptr_t) 1 << rrp->current % (8 * sizeof(uintptr_t));
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260
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410
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411 if (!(rrp->tried[n] & m)) {
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412 peer = &rrp->peers->peer[rrp->current];
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413
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414 if (!peer->down) {
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415
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416 if (peer->max_fails == 0
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417 || peer->fails < peer->max_fails)
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418 {
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419 break;
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420 }
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421
|
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422 if (now - peer->accessed > peer->fail_timeout) {
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423 peer->fails = 0;
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424 break;
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425 }
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426
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324
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427 peer->current_weight = 0;
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428
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260
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429 } else {
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430 rrp->tried[n] |= m;
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431 }
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432
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433 pc->tries--;
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434 }
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435
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330
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436 if (pc->tries == 0) {
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437 goto failed;
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260
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438 }
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439
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330
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440 if (--i == 0) {
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441 ngx_log_error(NGX_LOG_ALERT, pc->log, 0,
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442 "round robin upstream stuck on %ui tries",
|
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443 pc->tries);
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444 goto failed;
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445 }
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260
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446 }
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447
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448 peer->current_weight--;
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449
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450 } else {
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330
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451
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452 i = pc->tries;
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453
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260
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454 for ( ;; ) {
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455 n = rrp->current / (8 * sizeof(uintptr_t));
|
302
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456 m = (uintptr_t) 1 << rrp->current % (8 * sizeof(uintptr_t));
|
260
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457
|
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458 if (!(rrp->tried[n] & m)) {
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459
|
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460 peer = &rrp->peers->peer[rrp->current];
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461
|
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462 if (!peer->down) {
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463
|
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464 if (peer->max_fails == 0
|
|
465 || peer->fails < peer->max_fails)
|
|
466 {
|
|
467 break;
|
|
468 }
|
|
469
|
|
470 if (now - peer->accessed > peer->fail_timeout) {
|
|
471 peer->fails = 0;
|
|
472 break;
|
|
473 }
|
|
474
|
324
|
475 peer->current_weight = 0;
|
|
476
|
260
|
477 } else {
|
|
478 rrp->tried[n] |= m;
|
|
479 }
|
|
480
|
|
481 pc->tries--;
|
|
482 }
|
|
483
|
|
484 rrp->current++;
|
|
485
|
|
486 if (rrp->current >= rrp->peers->number) {
|
|
487 rrp->current = 0;
|
|
488 }
|
|
489
|
330
|
490 if (pc->tries == 0) {
|
|
491 goto failed;
|
260
|
492 }
|
|
493
|
330
|
494 if (--i == 0) {
|
|
495 ngx_log_error(NGX_LOG_ALERT, pc->log, 0,
|
|
496 "round robin upstream stuck on %ui tries",
|
|
497 pc->tries);
|
|
498 goto failed;
|
|
499 }
|
260
|
500 }
|
|
501
|
|
502 peer->current_weight--;
|
|
503 }
|
|
504
|
|
505 rrp->tried[n] |= m;
|
|
506 }
|
|
507
|
|
508 pc->sockaddr = peer->sockaddr;
|
|
509 pc->socklen = peer->socklen;
|
|
510 pc->name = &peer->name;
|
|
511
|
|
512 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
513
|
326
|
514 if (pc->tries == 1 && rrp->peers->next) {
|
|
515 pc->tries += rrp->peers->next->number;
|
|
516
|
|
517 n = rrp->peers->next->number / (8 * sizeof(uintptr_t)) + 1;
|
|
518 for (i = 0; i < n; i++) {
|
|
519 rrp->tried[i] = 0;
|
|
520 }
|
|
521 }
|
|
522
|
260
|
523 return NGX_OK;
|
|
524
|
|
525 failed:
|
|
526
|
326
|
527 peers = rrp->peers;
|
|
528
|
|
529 if (peers->next) {
|
|
530
|
|
531 /* ngx_unlock_mutex(peers->mutex); */
|
|
532
|
|
533 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, "backup servers");
|
|
534
|
|
535 rrp->peers = peers->next;
|
|
536 pc->tries = rrp->peers->number;
|
|
537
|
|
538 n = rrp->peers->number / (8 * sizeof(uintptr_t)) + 1;
|
|
539 for (i = 0; i < n; i++) {
|
|
540 rrp->tried[i] = 0;
|
|
541 }
|
|
542
|
|
543 rc = ngx_http_upstream_get_round_robin_peer(pc, rrp);
|
|
544
|
|
545 if (rc != NGX_BUSY) {
|
|
546 return rc;
|
|
547 }
|
|
548
|
|
549 /* ngx_lock_mutex(peers->mutex); */
|
|
550 }
|
|
551
|
260
|
552 /* all peers failed, mark them as live for quick recovery */
|
|
553
|
326
|
554 for (i = 0; i < peers->number; i++) {
|
|
555 peers->peer[i].fails = 0;
|
260
|
556 }
|
|
557
|
326
|
558 /* ngx_unlock_mutex(peers->mutex); */
|
260
|
559
|
326
|
560 pc->name = peers->name;
|
260
|
561
|
|
562 return NGX_BUSY;
|
|
563 }
|
|
564
|
|
565
|
324
|
566 static ngx_uint_t
|
|
567 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peers_t *peers)
|
|
568 {
|
|
569 ngx_uint_t i, n;
|
|
570 ngx_http_upstream_rr_peer_t *peer;
|
|
571
|
|
572 peer = &peers->peer[0];
|
|
573
|
|
574 for ( ;; ) {
|
|
575
|
|
576 for (i = 0; i < peers->number; i++) {
|
|
577
|
|
578 if (peer[i].current_weight <= 0) {
|
|
579 continue;
|
|
580 }
|
|
581
|
|
582 n = i;
|
|
583
|
|
584 while (i < peers->number - 1) {
|
|
585
|
|
586 i++;
|
|
587
|
|
588 if (peer[i].current_weight <= 0) {
|
|
589 continue;
|
|
590 }
|
|
591
|
|
592 if (peer[n].current_weight * 1000 / peer[i].current_weight
|
336
|
593 > peer[n].weight * 1000 / peer[i].weight)
|
324
|
594 {
|
|
595 return n;
|
|
596 }
|
|
597
|
|
598 n = i;
|
|
599 }
|
|
600
|
|
601 if (peer[i].current_weight > 0) {
|
|
602 n = i;
|
|
603 }
|
|
604
|
|
605 return n;
|
|
606 }
|
|
607
|
|
608 for (i = 0; i < peers->number; i++) {
|
364
|
609 peer[i].current_weight = peer[i].weight;
|
324
|
610 }
|
|
611 }
|
|
612 }
|
|
613
|
|
614
|
260
|
615 void
|
|
616 ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data,
|
|
617 ngx_uint_t state)
|
|
618 {
|
|
619 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
620
|
|
621 time_t now;
|
|
622 ngx_http_upstream_rr_peer_t *peer;
|
|
623
|
|
624 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
625 "free rr peer %ui %ui", pc->tries, state);
|
|
626
|
|
627 if (state == 0 && pc->tries == 0) {
|
|
628 return;
|
|
629 }
|
|
630
|
|
631 /* TODO: NGX_PEER_KEEPALIVE */
|
|
632
|
326
|
633 if (rrp->peers->single) {
|
260
|
634 pc->tries = 0;
|
|
635 return;
|
|
636 }
|
|
637
|
|
638 if (state & NGX_PEER_FAILED) {
|
|
639 now = ngx_time();
|
|
640
|
|
641 peer = &rrp->peers->peer[rrp->current];
|
|
642
|
|
643 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
644
|
|
645 peer->fails++;
|
|
646 peer->accessed = now;
|
|
647
|
324
|
648 peer->current_weight -= peer->weight / peer->max_fails;
|
|
649
|
|
650 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
|
651 "free rr peer failed: %ui %i",
|
|
652 rrp->current, peer->current_weight);
|
|
653
|
|
654 if (peer->current_weight < 0) {
|
|
655 peer->current_weight = 0;
|
260
|
656 }
|
|
657
|
|
658 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
659 }
|
|
660
|
|
661 rrp->current++;
|
|
662
|
|
663 if (rrp->current >= rrp->peers->number) {
|
|
664 rrp->current = 0;
|
|
665 }
|
|
666
|
|
667 if (pc->tries) {
|
|
668 pc->tries--;
|
|
669 }
|
|
670
|
|
671 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
672 }
|
|
673
|
|
674
|
|
675 #if (NGX_HTTP_SSL)
|
|
676
|
318
|
677 ngx_int_t
|
|
678 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
679 void *data)
|
260
|
680 {
|
|
681 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
682
|
318
|
683 ngx_int_t rc;
|
260
|
684 ngx_ssl_session_t *ssl_session;
|
|
685 ngx_http_upstream_rr_peer_t *peer;
|
|
686
|
318
|
687 peer = &rrp->peers->peer[rrp->current];
|
|
688
|
|
689 /* TODO: threads only mutex */
|
|
690 /* ngx_lock_mutex(rrp->peers->mutex); */
|
|
691
|
|
692 ssl_session = peer->ssl_session;
|
|
693
|
|
694 rc = ngx_ssl_set_session(pc->connection, ssl_session);
|
|
695
|
|
696 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
332
|
697 "set session: %p:%d",
|
|
698 ssl_session, ssl_session ? ssl_session->references : 0);
|
318
|
699
|
|
700 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
701
|
|
702 return rc;
|
|
703 }
|
|
704
|
|
705
|
|
706 void
|
|
707 ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
708 void *data)
|
|
709 {
|
|
710 ngx_http_upstream_rr_peer_data_t *rrp = data;
|
|
711
|
|
712 ngx_ssl_session_t *old_ssl_session, *ssl_session;
|
|
713 ngx_http_upstream_rr_peer_t *peer;
|
|
714
|
260
|
715 ssl_session = ngx_ssl_get_session(pc->connection);
|
|
716
|
|
717 if (ssl_session == NULL) {
|
|
718 return;
|
|
719 }
|
|
720
|
318
|
721 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
332
|
722 "save session: %p:%d", ssl_session, ssl_session->references);
|
318
|
723
|
260
|
724 peer = &rrp->peers->peer[rrp->current];
|
|
725
|
318
|
726 /* TODO: threads only mutex */
|
260
|
727 /* ngx_lock_mutex(rrp->peers->mutex); */
|
318
|
728
|
|
729 old_ssl_session = peer->ssl_session;
|
260
|
730 peer->ssl_session = ssl_session;
|
318
|
731
|
260
|
732 /* ngx_unlock_mutex(rrp->peers->mutex); */
|
|
733
|
318
|
734 if (old_ssl_session) {
|
|
735
|
|
736 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
|
332
|
737 "old session: %p:%d",
|
318
|
738 old_ssl_session, old_ssl_session->references);
|
|
739
|
260
|
740 /* TODO: may block */
|
318
|
741
|
|
742 ngx_ssl_free_session(old_ssl_session);
|
260
|
743 }
|
|
744 }
|
|
745
|
|
746 #endif
|