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