Mercurial > hg > ngx_http_upstream_keepalive
annotate ngx_http_upstream_keepalive_module.c @ 38:7e67b2e897df
Keepalive: unbreak build under win32.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Sun, 04 Sep 2011 01:42:43 +0400 |
parents | 4574b97220fb |
children | 17b2dbbbce98 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Maxim Dounin |
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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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12 typedef struct { |
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13 ngx_uint_t max_cached; |
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14 ngx_uint_t single; /* unsigned:1 */ |
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15 |
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16 ngx_queue_t cache; |
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17 ngx_queue_t free; |
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18 |
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19 ngx_http_upstream_init_pt original_init_upstream; |
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20 ngx_http_upstream_init_peer_pt original_init_peer; |
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21 |
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22 } ngx_http_upstream_keepalive_srv_conf_t; |
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5 | 24 |
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25 typedef struct { |
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26 ngx_http_upstream_keepalive_srv_conf_t *conf; |
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27 |
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28 ngx_http_upstream_t *upstream; |
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30 void *data; |
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31 |
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32 ngx_event_get_peer_pt original_get_peer; |
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33 ngx_event_free_peer_pt original_free_peer; |
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34 |
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35 #if (NGX_HTTP_SSL) |
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36 ngx_event_set_peer_session_pt original_set_session; |
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37 ngx_event_save_peer_session_pt original_save_session; |
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38 #endif |
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39 |
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40 ngx_uint_t failed; /* unsigned:1 */ |
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42 } ngx_http_upstream_keepalive_peer_data_t; |
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45 typedef struct { |
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46 ngx_http_upstream_keepalive_srv_conf_t *conf; |
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47 |
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48 ngx_queue_t queue; |
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49 ngx_connection_t *connection; |
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50 |
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51 socklen_t socklen; |
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52 struct sockaddr_storage sockaddr; |
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53 |
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54 } ngx_http_upstream_keepalive_cache_t; |
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55 |
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57 static ngx_int_t ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, |
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58 ngx_http_upstream_srv_conf_t *us); |
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59 static ngx_int_t ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, |
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60 void *data); |
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61 static void ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, |
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62 void *data, ngx_uint_t state); |
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63 |
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64 static void ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev); |
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65 static void ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev); |
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66 static void ngx_http_upstream_keepalive_close(ngx_connection_t *c); |
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67 |
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68 |
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69 #if (NGX_HTTP_SSL) |
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70 static ngx_int_t ngx_http_upstream_keepalive_set_session( |
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71 ngx_peer_connection_t *pc, void *data); |
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72 static void ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, |
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73 void *data); |
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74 #endif |
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75 |
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76 static void *ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf); |
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77 static char *ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, |
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78 void *conf); |
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79 |
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80 |
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81 static ngx_command_t ngx_http_upstream_keepalive_commands[] = { |
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82 |
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83 { ngx_string("keepalive"), |
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84 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12, |
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85 ngx_http_upstream_keepalive, |
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86 0, |
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87 0, |
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88 NULL }, |
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89 |
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90 ngx_null_command |
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91 }; |
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92 |
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94 static ngx_http_module_t ngx_http_upstream_keepalive_module_ctx = { |
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95 NULL, /* preconfiguration */ |
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96 NULL, /* postconfiguration */ |
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97 |
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98 NULL, /* create main configuration */ |
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99 NULL, /* init main configuration */ |
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100 |
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101 ngx_http_upstream_keepalive_create_conf, /* create server configuration */ |
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102 NULL, /* merge server configuration */ |
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103 |
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104 NULL, /* create location configuration */ |
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105 NULL /* merge location configuration */ |
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106 }; |
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107 |
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108 |
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109 ngx_module_t ngx_http_upstream_keepalive_module = { |
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110 NGX_MODULE_V1, |
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111 &ngx_http_upstream_keepalive_module_ctx, /* module context */ |
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112 ngx_http_upstream_keepalive_commands, /* module directives */ |
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113 NGX_HTTP_MODULE, /* module type */ |
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114 NULL, /* init master */ |
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115 NULL, /* init module */ |
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116 NULL, /* init process */ |
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117 NULL, /* init thread */ |
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118 NULL, /* exit thread */ |
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119 NULL, /* exit process */ |
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120 NULL, /* exit master */ |
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121 NGX_MODULE_V1_PADDING |
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122 }; |
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123 |
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124 |
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125 ngx_int_t |
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126 ngx_http_upstream_init_keepalive(ngx_conf_t *cf, |
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127 ngx_http_upstream_srv_conf_t *us) |
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128 { |
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129 ngx_uint_t i; |
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130 ngx_http_upstream_keepalive_srv_conf_t *kcf; |
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131 ngx_http_upstream_keepalive_cache_t *cached; |
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132 |
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133 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, |
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134 "init keepalive"); |
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135 |
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136 kcf = ngx_http_conf_upstream_srv_conf(us, |
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137 ngx_http_upstream_keepalive_module); |
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138 |
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139 if (kcf->original_init_upstream(cf, us) != NGX_OK) { |
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140 return NGX_ERROR; |
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141 } |
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142 |
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143 kcf->original_init_peer = us->peer.init; |
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144 |
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145 us->peer.init = ngx_http_upstream_init_keepalive_peer; |
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146 |
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147 /* allocate cache items and add to free queue */ |
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148 |
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149 cached = ngx_pcalloc(cf->pool, |
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150 sizeof(ngx_http_upstream_keepalive_cache_t) * kcf->max_cached); |
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151 if (cached == NULL) { |
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152 return NGX_ERROR; |
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153 } |
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154 |
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155 ngx_queue_init(&kcf->cache); |
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156 ngx_queue_init(&kcf->free); |
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157 |
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158 for (i = 0; i < kcf->max_cached; i++) { |
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159 ngx_queue_insert_head(&kcf->free, &cached[i].queue); |
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160 cached[i].conf = kcf; |
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161 } |
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162 |
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163 return NGX_OK; |
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164 } |
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165 |
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166 |
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167 static ngx_int_t |
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168 ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, |
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169 ngx_http_upstream_srv_conf_t *us) |
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170 { |
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171 ngx_http_upstream_keepalive_peer_data_t *kp; |
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172 ngx_http_upstream_keepalive_srv_conf_t *kcf; |
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173 |
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174 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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175 "init keepalive peer"); |
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176 |
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177 kcf = ngx_http_conf_upstream_srv_conf(us, |
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178 ngx_http_upstream_keepalive_module); |
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179 |
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180 kp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_keepalive_peer_data_t)); |
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181 if (kp == NULL) { |
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182 return NGX_ERROR; |
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183 } |
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184 |
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185 if (kcf->original_init_peer(r, us) != NGX_OK) { |
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186 return NGX_ERROR; |
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187 } |
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188 |
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189 kp->conf = kcf; |
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190 kp->upstream = r->upstream; |
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191 kp->data = r->upstream->peer.data; |
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192 kp->original_get_peer = r->upstream->peer.get; |
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193 kp->original_free_peer = r->upstream->peer.free; |
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194 |
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195 r->upstream->peer.data = kp; |
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196 r->upstream->peer.get = ngx_http_upstream_get_keepalive_peer; |
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197 r->upstream->peer.free = ngx_http_upstream_free_keepalive_peer; |
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198 |
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199 #if (NGX_HTTP_SSL) |
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200 kp->original_set_session = r->upstream->peer.set_session; |
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201 kp->original_save_session = r->upstream->peer.save_session; |
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202 r->upstream->peer.set_session = ngx_http_upstream_keepalive_set_session; |
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203 r->upstream->peer.save_session = ngx_http_upstream_keepalive_save_session; |
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204 #endif |
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205 |
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206 return NGX_OK; |
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207 } |
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208 |
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209 |
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210 static ngx_int_t |
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211 ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, void *data) |
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212 { |
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213 ngx_http_upstream_keepalive_peer_data_t *kp = data; |
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214 ngx_http_upstream_keepalive_cache_t *item; |
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215 |
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216 ngx_int_t rc; |
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217 ngx_queue_t *q, *cache; |
5 | 218 ngx_connection_t *c; |
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219 |
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220 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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221 "get keepalive peer"); |
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222 |
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223 kp->failed = 0; |
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224 |
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225 /* single pool of cached connections */ |
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226 |
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227 if (kp->conf->single && !ngx_queue_empty(&kp->conf->cache)) { |
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228 |
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229 q = ngx_queue_head(&kp->conf->cache); |
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230 |
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231 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); |
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232 c = item->connection; |
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233 |
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234 ngx_queue_remove(q); |
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235 ngx_queue_insert_head(&kp->conf->free, q); |
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236 |
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237 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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238 "get keepalive peer: using connection %p", c); |
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239 |
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240 c->idle = 0; |
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241 c->log = pc->log; |
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242 c->read->log = pc->log; |
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243 c->write->log = pc->log; |
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244 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED) |
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245 c->pool->log = pc->log; |
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246 #endif |
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247 |
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248 pc->connection = c; |
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249 pc->cached = 1; |
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250 |
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251 return NGX_DONE; |
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252 } |
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253 |
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254 rc = kp->original_get_peer(pc, kp->data); |
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255 |
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256 if (kp->conf->single || rc != NGX_OK) { |
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257 return rc; |
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258 } |
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259 |
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260 /* search cache for suitable connection */ |
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261 |
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262 cache = &kp->conf->cache; |
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263 |
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264 for (q = ngx_queue_head(cache); |
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265 q != ngx_queue_sentinel(cache); |
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266 q = ngx_queue_next(q)) |
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267 { |
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268 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); |
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269 c = item->connection; |
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270 |
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271 if (ngx_memn2cmp((u_char *) &item->sockaddr, (u_char *) pc->sockaddr, |
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272 item->socklen, pc->socklen) |
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273 == 0) |
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274 { |
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275 ngx_queue_remove(q); |
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276 ngx_queue_insert_head(&kp->conf->free, q); |
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277 |
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278 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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279 "get keepalive peer: using connection %p", c); |
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280 |
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281 c->idle = 0; |
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282 c->log = pc->log; |
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283 c->read->log = pc->log; |
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284 c->write->log = pc->log; |
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285 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED) |
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286 c->pool->log = pc->log; |
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287 #endif |
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288 |
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289 pc->connection = c; |
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290 pc->cached = 1; |
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291 |
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292 return NGX_DONE; |
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293 } |
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294 } |
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295 |
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296 return NGX_OK; |
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297 } |
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298 |
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299 |
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300 static void |
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301 ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, void *data, |
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302 ngx_uint_t state) |
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303 { |
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304 ngx_http_upstream_keepalive_peer_data_t *kp = data; |
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305 ngx_http_upstream_keepalive_cache_t *item; |
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306 |
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307 #if !(NGX_UPSTREAM_KEEPALIVE_PATCHED) |
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308 ngx_uint_t status; |
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309 #endif |
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310 ngx_queue_t *q; |
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311 ngx_connection_t *c; |
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312 ngx_http_upstream_t *u; |
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313 |
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314 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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315 "free keepalive peer"); |
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316 |
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317 /* remember failed state - peer.free() may be called more than once */ |
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318 |
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319 if (state & NGX_PEER_FAILED) { |
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320 kp->failed = 1; |
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321 } |
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322 |
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323 /* |
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324 * cache valid connections |
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325 * |
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326 * For memcached this means status either 404 or 200. For status 200 we |
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327 * should also check if all response body was read (u->length == 0) and |
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328 * make sure that u->length is valid (we use u->header_sent flag to test |
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|
329 * this). Memcached is the only supported protocol for now. |
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330 * |
30
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|
331 * With experimental patches we are able to cache other connections as |
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332 * well. Connection status is signalled via u->keepalive flag. |
11
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333 */ |
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|
334 |
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|
335 u = kp->upstream; |
26
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Keepalive: don't cache timed out connections.
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336 c = pc->connection; |
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337 |
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|
338 if (kp->failed |
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339 || c == NULL |
33
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|
340 || c->read->eof |
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|
341 || c->read->ready |
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|
342 || c->read->error |
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|
343 || c->read->timedout |
33
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|
344 || c->write->error |
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|
345 || c->write->timedout) |
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|
346 { |
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|
347 goto invalid; |
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|
348 } |
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|
349 |
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|
350 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED) |
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|
351 |
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|
352 if (!u->keepalive) { |
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|
353 goto invalid; |
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|
354 } |
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|
355 |
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|
356 #else |
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changeset
|
357 |
11
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diff
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|
358 status = u->headers_in.status_n; |
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|
359 |
31
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30
diff
changeset
|
360 if (!(status == NGX_HTTP_NOT_FOUND |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
361 || (status == NGX_HTTP_OK && u->header_sent && u->length == 0))) |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
362 { |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
363 goto invalid; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
364 } |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
365 |
37
4574b97220fb
Keepalive: unbreak build without --with-http_ssl_module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
33
diff
changeset
|
366 #if (NGX_HTTP_SSL) |
4574b97220fb
Keepalive: unbreak build without --with-http_ssl_module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
33
diff
changeset
|
367 |
32
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
368 /* |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
369 * to cache ssl connections separate pool for peer connection is |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
370 * required, which is only available with patches |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
371 */ |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
372 |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
373 if (c->ssl) { |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
374 goto invalid; |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
375 } |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
376 |
14
28af4b0b32c1
Keepalive: experimental fastcgi support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
11
diff
changeset
|
377 #endif |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
378 |
37
4574b97220fb
Keepalive: unbreak build without --with-http_ssl_module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
33
diff
changeset
|
379 #endif |
4574b97220fb
Keepalive: unbreak build without --with-http_ssl_module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
33
diff
changeset
|
380 |
33
52ca695446d3
Keepalive: more connection validity checks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
32
diff
changeset
|
381 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
52ca695446d3
Keepalive: more connection validity checks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
32
diff
changeset
|
382 goto invalid; |
52ca695446d3
Keepalive: more connection validity checks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
32
diff
changeset
|
383 } |
52ca695446d3
Keepalive: more connection validity checks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
32
diff
changeset
|
384 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
385 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
386 "free keepalive peer: saving connection %p", c); |
10
06bd0e50e696
Keepalive: log saving connection.
Maxim Dounin <mdounin@mdounin.ru>
parents:
8
diff
changeset
|
387 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
388 if (ngx_queue_empty(&kp->conf->free)) { |
3
42e64900483b
Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
389 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
390 q = ngx_queue_last(&kp->conf->cache); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
391 ngx_queue_remove(q); |
3
42e64900483b
Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
392 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
393 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
394 |
32
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
395 ngx_http_upstream_keepalive_close(item->connection); |
3
42e64900483b
Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
396 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
397 } else { |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
398 q = ngx_queue_head(&kp->conf->free); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
399 ngx_queue_remove(q); |
3
42e64900483b
Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
400 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
401 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
402 } |
3
42e64900483b
Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2
diff
changeset
|
403 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
404 item->connection = c; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
405 ngx_queue_insert_head(&kp->conf->cache, q); |
2
8545bbda9e4b
Keepalive: reimplement using queues.
Maxim Dounin <mdounin@mdounin.ru>
parents:
1
diff
changeset
|
406 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
407 pc->connection = NULL; |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
408 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
409 if (c->read->timer_set) { |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
410 ngx_del_timer(c->read); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
411 } |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
412 if (c->write->timer_set) { |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
413 ngx_del_timer(c->write); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
414 } |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
415 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
416 c->write->handler = ngx_http_upstream_keepalive_dummy_handler; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
417 c->read->handler = ngx_http_upstream_keepalive_close_handler; |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
418 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
419 c->data = item; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
420 c->idle = 1; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
421 c->log = ngx_cycle->log; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
422 c->read->log = ngx_cycle->log; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
423 c->write->log = ngx_cycle->log; |
32
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
424 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED) |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
425 c->pool->log = ngx_cycle->log; |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
426 #endif |
6
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
427 |
31
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
428 item->socklen = pc->socklen; |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
429 ngx_memcpy(&item->sockaddr, pc->sockaddr, pc->socklen); |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
430 |
78fd926c306d
Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
30
diff
changeset
|
431 invalid: |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
432 |
38
7e67b2e897df
Keepalive: unbreak build under win32.
Maxim Dounin <mdounin@mdounin.ru>
parents:
37
diff
changeset
|
433 kp->original_free_peer(pc, kp->data, state); |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
434 } |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
435 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
436 |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
437 static void |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
438 ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev) |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
439 { |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
440 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
441 "keepalive dummy handler"); |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
442 } |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
443 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
444 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
445 static void |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
446 ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev) |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
447 { |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
448 ngx_http_upstream_keepalive_srv_conf_t *conf; |
2
8545bbda9e4b
Keepalive: reimplement using queues.
Maxim Dounin <mdounin@mdounin.ru>
parents:
1
diff
changeset
|
449 ngx_http_upstream_keepalive_cache_t *item; |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
450 |
21
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
451 int n; |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
452 char buf[1]; |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
453 ngx_connection_t *c; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
454 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
455 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
456 "keepalive close handler"); |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
457 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
458 c = ev->data; |
21
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
459 |
24
2ee28064a04a
Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents:
21
diff
changeset
|
460 if (c->close) { |
2ee28064a04a
Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents:
21
diff
changeset
|
461 goto close; |
2ee28064a04a
Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents:
21
diff
changeset
|
462 } |
2ee28064a04a
Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents:
21
diff
changeset
|
463 |
21
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
464 n = recv(c->fd, buf, 1, MSG_PEEK); |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
465 |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
466 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) { |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
467 /* stale event */ |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
468 |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
469 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
470 goto close; |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
471 } |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
472 |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
473 return; |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
474 } |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
475 |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
476 close: |
9a4ee6fe1c6d
Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents:
18
diff
changeset
|
477 |
8
565939797f5c
Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6
diff
changeset
|
478 item = c->data; |
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Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
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6
diff
changeset
|
479 conf = item->conf; |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
480 |
32
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
481 ngx_http_upstream_keepalive_close(c); |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
482 |
8
565939797f5c
Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6
diff
changeset
|
483 ngx_queue_remove(&item->queue); |
565939797f5c
Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6
diff
changeset
|
484 ngx_queue_insert_head(&conf->free, &item->queue); |
1
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Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
485 } |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
486 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
487 |
32
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
488 static void |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
489 ngx_http_upstream_keepalive_close(ngx_connection_t *c) |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
490 { |
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Keepalive: ssl connection handling.
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31
diff
changeset
|
491 |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
492 #if (NGX_HTTP_SSL) |
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Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
493 |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
494 if (c->ssl) { |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
495 c->ssl->no_wait_shutdown = 1; |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
496 c->ssl->no_send_shutdown = 1; |
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Keepalive: ssl connection handling.
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31
diff
changeset
|
497 |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
498 if (ngx_ssl_shutdown(c) == NGX_AGAIN) { |
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Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
499 c->ssl->handler = ngx_http_upstream_keepalive_close; |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
500 return; |
9aa0d263f2a7
Keepalive: ssl connection handling.
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31
diff
changeset
|
501 } |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
502 } |
9aa0d263f2a7
Keepalive: ssl connection handling.
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parents:
31
diff
changeset
|
503 |
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Keepalive: ssl connection handling.
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31
diff
changeset
|
504 #endif |
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diff
changeset
|
505 |
9aa0d263f2a7
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31
diff
changeset
|
506 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED) |
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Maxim Dounin <mdounin@mdounin.ru>
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diff
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|
507 ngx_destroy_pool(c->pool); |
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Keepalive: ssl connection handling.
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diff
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|
508 #endif |
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diff
changeset
|
509 ngx_close_connection(c); |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
510 } |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
31
diff
changeset
|
511 |
9aa0d263f2a7
Keepalive: ssl connection handling.
Maxim Dounin <mdounin@mdounin.ru>
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31
diff
changeset
|
512 |
29
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
513 #if (NGX_HTTP_SSL) |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
514 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
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28
diff
changeset
|
515 static ngx_int_t |
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Keepalive: set_session and save_session callbacks.
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28
diff
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|
516 ngx_http_upstream_keepalive_set_session(ngx_peer_connection_t *pc, void *data) |
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Keepalive: set_session and save_session callbacks.
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parents:
28
diff
changeset
|
517 { |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
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28
diff
changeset
|
518 ngx_http_upstream_keepalive_peer_data_t *kp = data; |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
519 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
520 return kp->original_set_session(pc, kp->data); |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
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28
diff
changeset
|
521 } |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
522 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
523 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
524 static void |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
525 ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, void *data) |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
526 { |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
527 ngx_http_upstream_keepalive_peer_data_t *kp = data; |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
528 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
529 kp->original_save_session(pc, kp->data); |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
530 return; |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
531 } |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
532 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
533 #endif |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
534 |
c7c4b2d68fdf
Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents:
28
diff
changeset
|
535 |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
536 static void * |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
537 ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf) |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
538 { |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
539 ngx_http_upstream_keepalive_srv_conf_t *conf; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
540 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
541 conf = ngx_pcalloc(cf->pool, |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
542 sizeof(ngx_http_upstream_keepalive_srv_conf_t)); |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
543 if (conf == NULL) { |
18
2054159546d0
Keepalive: fix create_conf to return NULL on errors.
Maxim Dounin <mdounin@mdounin.ru>
parents:
14
diff
changeset
|
544 return NULL; |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
545 } |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
546 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
547 /* |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
548 * set by ngx_pcalloc(): |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
549 * |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
550 * conf->original_init_upstream = NULL; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
551 * conf->original_init_peer = NULL; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
552 */ |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
553 |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
554 conf->max_cached = 1; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
555 |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
556 return conf; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
557 } |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
558 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
559 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
560 static char * |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
561 ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
562 { |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
563 ngx_http_upstream_srv_conf_t *uscf; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
564 ngx_http_upstream_keepalive_srv_conf_t *kcf; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
565 |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
566 ngx_int_t n; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
567 ngx_str_t *value; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
568 ngx_uint_t i; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
569 |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
570 uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
571 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
572 kcf = ngx_http_conf_upstream_srv_conf(uscf, |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
573 ngx_http_upstream_keepalive_module); |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
574 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
575 kcf->original_init_upstream = uscf->peer.init_upstream |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
576 ? uscf->peer.init_upstream |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
577 : ngx_http_upstream_init_round_robin; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
578 |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
579 uscf->peer.init_upstream = ngx_http_upstream_init_keepalive; |
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
580 |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
581 /* read options */ |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
582 |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
583 value = cf->args->elts; |
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
584 |
6
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
585 n = ngx_atoi(value[1].data, value[1].len); |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
586 |
6
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
587 if (n == NGX_ERROR || n == 0) { |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
588 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
589 "invalid value \"%V\" in \"%V\" directive", |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
590 &value[1], &cmd->name); |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
591 return NGX_CONF_ERROR; |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
592 } |
1
ca955a7f651b
Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
593 |
6
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
594 kcf->max_cached = n; |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
595 |
bef88ba0b378
Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5
diff
changeset
|
596 for (i = 2; i < cf->args->nelts; i++) { |
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597 |
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Keepalive: distinguish between upstream servers by default.
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598 if (ngx_strcmp(value[i].data, "single") == 0) { |
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Keepalive: distinguish between upstream servers by default.
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599 kcf->single = 1; |
1
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Keepalive: common cache for all backends.
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600 continue; |
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Keepalive: common cache for all backends.
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601 } |
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Keepalive: common cache for all backends.
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602 |
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Keepalive: common cache for all backends.
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603 goto invalid; |
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Keepalive: common cache for all backends.
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604 } |
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Keepalive: common cache for all backends.
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parents:
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605 |
0
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Keepalive upstream balancer: transparent skeleton.
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606 return NGX_CONF_OK; |
1
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Keepalive: common cache for all backends.
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parents:
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607 |
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Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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608 invalid: |
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Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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609 |
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Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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610 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
ca955a7f651b
Keepalive: common cache for all backends.
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611 "invalid parameter \"%V\"", &value[i]); |
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Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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612 |
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Keepalive: common cache for all backends.
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parents:
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613 return NGX_CONF_ERROR; |
0
725ee11164f3
Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
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614 } |