6115
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1
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2 /*
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3 * Copyright (C) Roman Arutyunyan
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_stream.h>
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11
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12
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13 static void *ngx_stream_core_create_main_conf(ngx_conf_t *cf);
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14 static void *ngx_stream_core_create_srv_conf(ngx_conf_t *cf);
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15 static char *ngx_stream_core_merge_srv_conf(ngx_conf_t *cf, void *parent,
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16 void *child);
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17 static char *ngx_stream_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd,
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18 void *conf);
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19 static char *ngx_stream_core_server(ngx_conf_t *cf, ngx_command_t *cmd,
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20 void *conf);
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21 static char *ngx_stream_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
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22 void *conf);
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23
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24
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25 static ngx_command_t ngx_stream_core_commands[] = {
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26
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27 { ngx_string("server"),
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28 NGX_STREAM_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
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29 ngx_stream_core_server,
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30 0,
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31 0,
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32 NULL },
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33
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34 { ngx_string("listen"),
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35 NGX_STREAM_SRV_CONF|NGX_CONF_1MORE,
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36 ngx_stream_core_listen,
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37 NGX_STREAM_SRV_CONF_OFFSET,
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38 0,
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39 NULL },
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40
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41 { ngx_string("error_log"),
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42 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE,
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43 ngx_stream_core_error_log,
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44 NGX_STREAM_SRV_CONF_OFFSET,
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45 0,
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46 NULL },
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47
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48 ngx_null_command
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49 };
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50
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51
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52 static ngx_stream_module_t ngx_stream_core_module_ctx = {
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53 ngx_stream_core_create_main_conf, /* create main configuration */
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54 NULL, /* init main configuration */
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55
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56 ngx_stream_core_create_srv_conf, /* create server configuration */
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57 ngx_stream_core_merge_srv_conf /* merge server configuration */
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58 };
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59
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60
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61 ngx_module_t ngx_stream_core_module = {
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62 NGX_MODULE_V1,
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63 &ngx_stream_core_module_ctx, /* module context */
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64 ngx_stream_core_commands, /* module directives */
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65 NGX_STREAM_MODULE, /* module type */
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66 NULL, /* init master */
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67 NULL, /* init module */
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68 NULL, /* init process */
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69 NULL, /* init thread */
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70 NULL, /* exit thread */
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71 NULL, /* exit process */
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72 NULL, /* exit master */
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73 NGX_MODULE_V1_PADDING
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74 };
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75
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76
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77 static void *
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78 ngx_stream_core_create_main_conf(ngx_conf_t *cf)
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79 {
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80 ngx_stream_core_main_conf_t *cmcf;
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81
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82 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_core_main_conf_t));
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83 if (cmcf == NULL) {
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84 return NULL;
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85 }
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86
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87 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
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88 sizeof(ngx_stream_core_srv_conf_t *))
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89 != NGX_OK)
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90 {
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91 return NULL;
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92 }
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93
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94 if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_stream_listen_t))
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95 != NGX_OK)
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96 {
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97 return NULL;
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98 }
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99
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100 return cmcf;
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101 }
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102
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103
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104 static void *
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105 ngx_stream_core_create_srv_conf(ngx_conf_t *cf)
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106 {
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107 ngx_stream_core_srv_conf_t *cscf;
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108
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109 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_core_srv_conf_t));
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110 if (cscf == NULL) {
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111 return NULL;
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112 }
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113
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114 /*
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115 * set by ngx_pcalloc():
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116 *
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117 * cscf->handler = NULL;
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118 * cscf->error_log = NULL;
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119 */
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120
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121 cscf->file_name = cf->conf_file->file.name.data;
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122 cscf->line = cf->conf_file->line;
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123
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124 return cscf;
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125 }
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126
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127
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128 static char *
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129 ngx_stream_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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130 {
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131 ngx_stream_core_srv_conf_t *prev = parent;
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132 ngx_stream_core_srv_conf_t *conf = child;
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133
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134 if (conf->handler == NULL) {
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135 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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136 "no handler for server in %s:%ui",
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137 conf->file_name, conf->line);
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138 return NGX_CONF_ERROR;
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139 }
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140
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141 if (conf->error_log == NULL) {
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142 if (prev->error_log) {
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143 conf->error_log = prev->error_log;
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144 } else {
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145 conf->error_log = &cf->cycle->new_log;
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146 }
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147 }
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148
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149 return NGX_CONF_OK;
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150 }
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151
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152
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153 static char *
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154 ngx_stream_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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155 {
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156 ngx_stream_core_srv_conf_t *cscf = conf;
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157
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158 return ngx_log_set_log(cf, &cscf->error_log);
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159 }
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160
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161
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162 static char *
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163 ngx_stream_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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164 {
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165 char *rv;
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166 void *mconf;
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167 ngx_uint_t m;
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168 ngx_conf_t pcf;
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169 ngx_stream_module_t *module;
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170 ngx_stream_conf_ctx_t *ctx, *stream_ctx;
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171 ngx_stream_core_srv_conf_t *cscf, **cscfp;
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172 ngx_stream_core_main_conf_t *cmcf;
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173
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174 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_conf_ctx_t));
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175 if (ctx == NULL) {
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176 return NGX_CONF_ERROR;
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177 }
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178
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179 stream_ctx = cf->ctx;
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180 ctx->main_conf = stream_ctx->main_conf;
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181
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182 /* the server{}'s srv_conf */
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183
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184 ctx->srv_conf = ngx_pcalloc(cf->pool,
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185 sizeof(void *) * ngx_stream_max_module);
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186 if (ctx->srv_conf == NULL) {
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187 return NGX_CONF_ERROR;
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188 }
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189
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190 for (m = 0; ngx_modules[m]; m++) {
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191 if (ngx_modules[m]->type != NGX_STREAM_MODULE) {
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192 continue;
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193 }
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194
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195 module = ngx_modules[m]->ctx;
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196
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197 if (module->create_srv_conf) {
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198 mconf = module->create_srv_conf(cf);
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199 if (mconf == NULL) {
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200 return NGX_CONF_ERROR;
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201 }
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202
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203 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
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204 }
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205 }
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206
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207 /* the server configuration context */
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208
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209 cscf = ctx->srv_conf[ngx_stream_core_module.ctx_index];
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210 cscf->ctx = ctx;
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211
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212 cmcf = ctx->main_conf[ngx_stream_core_module.ctx_index];
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213
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214 cscfp = ngx_array_push(&cmcf->servers);
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215 if (cscfp == NULL) {
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216 return NGX_CONF_ERROR;
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217 }
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218
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219 *cscfp = cscf;
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220
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221
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222 /* parse inside server{} */
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223
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224 pcf = *cf;
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225 cf->ctx = ctx;
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226 cf->cmd_type = NGX_STREAM_SRV_CONF;
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227
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228 rv = ngx_conf_parse(cf, NULL);
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229
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230 *cf = pcf;
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231
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232 return rv;
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233 }
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234
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235
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236 static char *
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237 ngx_stream_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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238 {
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239 size_t len, off;
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240 in_port_t port;
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241 ngx_str_t *value;
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242 ngx_url_t u;
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243 ngx_uint_t i;
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244 struct sockaddr *sa;
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245 struct sockaddr_in *sin;
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246 ngx_stream_listen_t *ls;
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247 ngx_stream_core_main_conf_t *cmcf;
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248 #if (NGX_HAVE_INET6)
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249 struct sockaddr_in6 *sin6;
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250 #endif
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251
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252 value = cf->args->elts;
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253
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254 ngx_memzero(&u, sizeof(ngx_url_t));
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255
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256 u.url = value[1];
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257 u.listen = 1;
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258
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259 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
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260 if (u.err) {
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261 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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262 "%s in \"%V\" of the \"listen\" directive",
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263 u.err, &u.url);
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264 }
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265
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266 return NGX_CONF_ERROR;
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267 }
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268
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269 cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module);
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270
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271 ls = cmcf->listen.elts;
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272
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273 for (i = 0; i < cmcf->listen.nelts; i++) {
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274
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275 sa = (struct sockaddr *) ls[i].sockaddr;
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276
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277 if (sa->sa_family != u.family) {
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278 continue;
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279 }
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280
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281 switch (sa->sa_family) {
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282
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283 #if (NGX_HAVE_INET6)
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284 case AF_INET6:
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285 off = offsetof(struct sockaddr_in6, sin6_addr);
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286 len = 16;
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287 sin6 = (struct sockaddr_in6 *) sa;
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288 port = sin6->sin6_port;
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289 break;
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290 #endif
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291
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292 #if (NGX_HAVE_UNIX_DOMAIN)
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293 case AF_UNIX:
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294 off = offsetof(struct sockaddr_un, sun_path);
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295 len = sizeof(((struct sockaddr_un *) sa)->sun_path);
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296 port = 0;
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297 break;
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298 #endif
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299
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300 default: /* AF_INET */
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301 off = offsetof(struct sockaddr_in, sin_addr);
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302 len = 4;
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303 sin = (struct sockaddr_in *) sa;
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304 port = sin->sin_port;
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305 break;
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306 }
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307
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308 if (ngx_memcmp(ls[i].sockaddr + off, u.sockaddr + off, len) != 0) {
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309 continue;
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310 }
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311
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312 if (port != u.port) {
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313 continue;
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314 }
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315
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316 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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317 "duplicate \"%V\" address and port pair", &u.url);
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318 return NGX_CONF_ERROR;
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319 }
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320
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321 ls = ngx_array_push(&cmcf->listen);
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322 if (ls == NULL) {
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323 return NGX_CONF_ERROR;
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324 }
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325
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326 ngx_memzero(ls, sizeof(ngx_stream_listen_t));
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327
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328 ngx_memcpy(ls->sockaddr, u.sockaddr, u.socklen);
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329
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330 ls->socklen = u.socklen;
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331 ls->wildcard = u.wildcard;
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332 ls->ctx = cf->ctx;
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333
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334 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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335 ls->ipv6only = 1;
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336 #endif
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337
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338 for (i = 2; i < cf->args->nelts; i++) {
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339
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340 if (ngx_strcmp(value[i].data, "bind") == 0) {
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341 ls->bind = 1;
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342 continue;
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343 }
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344
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345 if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) {
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346 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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347 struct sockaddr *sa;
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348 u_char buf[NGX_SOCKADDR_STRLEN];
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349
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350 sa = (struct sockaddr *) ls->sockaddr;
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351
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352 if (sa->sa_family == AF_INET6) {
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353
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354 if (ngx_strcmp(&value[i].data[10], "n") == 0) {
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355 ls->ipv6only = 1;
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356
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357 } else if (ngx_strcmp(&value[i].data[10], "ff") == 0) {
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358 ls->ipv6only = 0;
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359
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360 } else {
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361 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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362 "invalid ipv6only flags \"%s\"",
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363 &value[i].data[9]);
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364 return NGX_CONF_ERROR;
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365 }
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366
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367 ls->bind = 1;
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368
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369 } else {
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370 len = ngx_sock_ntop(sa, ls->socklen, buf,
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371 NGX_SOCKADDR_STRLEN, 1);
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372
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373 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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374 "ipv6only is not supported "
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375 "on addr \"%*s\", ignored", len, buf);
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376 }
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377
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378 continue;
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379 #else
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380 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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381 "bind ipv6only is not supported "
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382 "on this platform");
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383 return NGX_CONF_ERROR;
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384 #endif
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385 }
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386
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387 if (ngx_strcmp(value[i].data, "ssl") == 0) {
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388 #if (NGX_STREAM_SSL)
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389 ls->ssl = 1;
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390 continue;
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391 #else
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392 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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393 "the \"ssl\" parameter requires "
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394 "ngx_stream_ssl_module");
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395 return NGX_CONF_ERROR;
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396 #endif
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397 }
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398
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399 if (ngx_strncmp(value[i].data, "so_keepalive=", 13) == 0) {
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400
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401 if (ngx_strcmp(&value[i].data[13], "on") == 0) {
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402 ls->so_keepalive = 1;
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403
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404 } else if (ngx_strcmp(&value[i].data[13], "off") == 0) {
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405 ls->so_keepalive = 2;
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406
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407 } else {
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408
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409 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
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410 u_char *p, *end;
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411 ngx_str_t s;
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412
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413 end = value[i].data + value[i].len;
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414 s.data = value[i].data + 13;
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415
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416 p = ngx_strlchr(s.data, end, ':');
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417 if (p == NULL) {
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418 p = end;
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419 }
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420
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421 if (p > s.data) {
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422 s.len = p - s.data;
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423
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424 ls->tcp_keepidle = ngx_parse_time(&s, 1);
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425 if (ls->tcp_keepidle == (time_t) NGX_ERROR) {
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426 goto invalid_so_keepalive;
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427 }
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428 }
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429
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430 s.data = (p < end) ? (p + 1) : end;
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431
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432 p = ngx_strlchr(s.data, end, ':');
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433 if (p == NULL) {
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434 p = end;
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435 }
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436
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437 if (p > s.data) {
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438 s.len = p - s.data;
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439
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440 ls->tcp_keepintvl = ngx_parse_time(&s, 1);
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441 if (ls->tcp_keepintvl == (time_t) NGX_ERROR) {
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442 goto invalid_so_keepalive;
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443 }
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444 }
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445
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446 s.data = (p < end) ? (p + 1) : end;
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447
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448 if (s.data < end) {
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449 s.len = end - s.data;
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450
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451 ls->tcp_keepcnt = ngx_atoi(s.data, s.len);
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452 if (ls->tcp_keepcnt == NGX_ERROR) {
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453 goto invalid_so_keepalive;
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454 }
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455 }
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456
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457 if (ls->tcp_keepidle == 0 && ls->tcp_keepintvl == 0
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458 && ls->tcp_keepcnt == 0)
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459 {
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460 goto invalid_so_keepalive;
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461 }
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462
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463 ls->so_keepalive = 1;
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464
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465 #else
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466
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467 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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468 "the \"so_keepalive\" parameter accepts "
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469 "only \"on\" or \"off\" on this platform");
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470 return NGX_CONF_ERROR;
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471
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472 #endif
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473 }
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474
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475 ls->bind = 1;
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476
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477 continue;
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478
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479 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
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480 invalid_so_keepalive:
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481
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482 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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483 "invalid so_keepalive value: \"%s\"",
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484 &value[i].data[13]);
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485 return NGX_CONF_ERROR;
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486 #endif
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487 }
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488
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489 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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490 "the invalid \"%V\" parameter", &value[i]);
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491 return NGX_CONF_ERROR;
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492 }
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493
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494 return NGX_CONF_OK;
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495 }
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