58
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10 #include <ngx_http.h>
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11
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12
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13 typedef struct ngx_http_proxy_redirect_s ngx_http_proxy_redirect_t;
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14
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15 typedef ngx_int_t (*ngx_http_proxy_redirect_pt)(ngx_http_request_t *r,
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16 ngx_table_elt_t *h, size_t prefix, ngx_http_proxy_redirect_t *pr);
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17
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18 struct ngx_http_proxy_redirect_s {
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19 ngx_http_proxy_redirect_pt handler;
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20 ngx_str_t redirect;
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21
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22 union {
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23 ngx_str_t text;
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24
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25 struct {
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26 void *lengths;
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27 void *values;
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28 } vars;
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29
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30 void *regex;
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31 } replacement;
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32 };
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33
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34
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35 typedef struct {
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36 ngx_http_upstream_conf_t upstream;
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37
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38 ngx_peers_t *peers;
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39
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40 ngx_array_t *headers_set_len;
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41 ngx_array_t *headers_set;
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42 ngx_hash_t *headers_set_hash;
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43
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44 ngx_array_t *headers_source;
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45 ngx_array_t *headers_names;
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46
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47 ngx_array_t *redirects;
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48
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49 ngx_str_t host_header;
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50 ngx_str_t port_text;
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51
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52 ngx_flag_t redirect;
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53 } ngx_http_proxy_loc_conf_t;
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54
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55
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56 typedef struct {
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57 ngx_uint_t status;
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58 ngx_uint_t status_count;
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59 u_char *status_start;
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60 u_char *status_end;
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61 } ngx_http_proxy_ctx_t;
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62
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63
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64 #define NGX_HTTP_PROXY_PARSE_NO_HEADER 20
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65
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66
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67 static ngx_int_t ngx_http_proxy_create_request(ngx_http_request_t *r);
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68 static ngx_int_t ngx_http_proxy_reinit_request(ngx_http_request_t *r);
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69 static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r);
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70 static ngx_int_t ngx_http_proxy_parse_status_line(ngx_http_request_t *r,
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71 ngx_http_proxy_ctx_t *p);
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72 static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r);
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73 static void ngx_http_proxy_abort_request(ngx_http_request_t *r);
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74 static void ngx_http_proxy_finalize_request(ngx_http_request_t *r,
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75 ngx_int_t rc);
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76
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77 static ngx_http_variable_value_t *
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78 ngx_http_proxy_host_variable(ngx_http_request_t *r, uintptr_t data);
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79 static ngx_http_variable_value_t *
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80 ngx_http_proxy_port_variable(ngx_http_request_t *r, uintptr_t data);
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81 static ngx_http_variable_value_t *
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82 ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r,
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83 uintptr_t data);
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84 static ngx_int_t ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r,
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85 ngx_table_elt_t *h, size_t prefix);
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86
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87 static ngx_int_t ngx_http_proxy_add_variables(ngx_conf_t *cf);
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88 static void *ngx_http_proxy_create_loc_conf(ngx_conf_t *cf);
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89 static char *ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf,
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90 void *parent, void *child);
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91
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92 static char *ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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93 void *conf);
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94 static char *ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd,
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95 void *conf);
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96
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97 static char *ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data);
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98
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99
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100 static ngx_conf_post_t ngx_http_proxy_lowat_post =
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101 { ngx_http_proxy_lowat_check };
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102
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103 static ngx_conf_enum_t ngx_http_proxy_set_methods[] = {
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104 { ngx_string("get"), NGX_HTTP_GET },
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105 { ngx_null_string, 0 }
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106 };
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107
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108 static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = {
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109 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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110 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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111 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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112 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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113 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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114 { ngx_null_string, 0 }
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115 };
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116
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117
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118 static ngx_command_t ngx_http_proxy_commands[] = {
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119
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120 { ngx_string("proxy_pass"),
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121 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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122 ngx_http_proxy_pass,
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123 NGX_HTTP_LOC_CONF_OFFSET,
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124 0,
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125 NULL },
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126
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127 { ngx_string("proxy_redirect"),
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128 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12,
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129 ngx_http_proxy_redirect,
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130 NGX_HTTP_LOC_CONF_OFFSET,
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131 0,
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132 NULL },
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133
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134 { ngx_string("proxy_connect_timeout"),
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135 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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136 ngx_conf_set_msec_slot,
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137 NGX_HTTP_LOC_CONF_OFFSET,
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138 offsetof(ngx_http_proxy_loc_conf_t, upstream.connect_timeout),
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139 NULL },
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140
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141 { ngx_string("proxy_send_timeout"),
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142 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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143 ngx_conf_set_msec_slot,
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144 NGX_HTTP_LOC_CONF_OFFSET,
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145 offsetof(ngx_http_proxy_loc_conf_t, upstream.send_timeout),
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146 NULL },
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147
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148 { ngx_string("proxy_send_lowat"),
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149 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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150 ngx_conf_set_size_slot,
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151 NGX_HTTP_LOC_CONF_OFFSET,
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152 offsetof(ngx_http_proxy_loc_conf_t, upstream.send_lowat),
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153 &ngx_http_proxy_lowat_post },
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154
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155 { ngx_string("proxy_redirect_errors"),
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156 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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157 ngx_conf_set_flag_slot,
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158 NGX_HTTP_LOC_CONF_OFFSET,
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159 offsetof(ngx_http_proxy_loc_conf_t, upstream.redirect_errors),
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160 NULL },
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161
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162 { ngx_string("proxy_pass_unparsed_uri"),
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163 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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164 ngx_conf_set_flag_slot,
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165 NGX_HTTP_LOC_CONF_OFFSET,
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166 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_unparsed_uri),
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167 NULL },
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168
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169 { ngx_string("proxy_set_header"),
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170 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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171 ngx_conf_set_table_elt_slot,
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172 NGX_HTTP_LOC_CONF_OFFSET,
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173 offsetof(ngx_http_proxy_loc_conf_t, headers_source),
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174 NULL },
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175
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176 { ngx_string("proxy_method"),
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177 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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178 ngx_conf_set_enum_slot,
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179 NGX_HTTP_LOC_CONF_OFFSET,
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180 offsetof(ngx_http_proxy_loc_conf_t, upstream.method),
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181 ngx_http_proxy_set_methods },
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182
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183 { ngx_string("proxy_pass_request_headers"),
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184 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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185 ngx_conf_set_flag_slot,
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186 NGX_HTTP_LOC_CONF_OFFSET,
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187 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_request_headers),
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188 NULL },
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189
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190 { ngx_string("proxy_pass_request_body"),
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191 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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192 ngx_conf_set_flag_slot,
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193 NGX_HTTP_LOC_CONF_OFFSET,
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194 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_request_body),
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195 NULL },
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196
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197 { ngx_string("proxy_header_buffer_size"),
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198 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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199 ngx_conf_set_size_slot,
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200 NGX_HTTP_LOC_CONF_OFFSET,
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201 offsetof(ngx_http_proxy_loc_conf_t, upstream.header_buffer_size),
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202 NULL },
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203
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204 { ngx_string("proxy_read_timeout"),
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205 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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206 ngx_conf_set_msec_slot,
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207 NGX_HTTP_LOC_CONF_OFFSET,
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208 offsetof(ngx_http_proxy_loc_conf_t, upstream.read_timeout),
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209 NULL },
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210
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211 { ngx_string("proxy_buffers"),
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212 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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213 ngx_conf_set_bufs_slot,
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214 NGX_HTTP_LOC_CONF_OFFSET,
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215 offsetof(ngx_http_proxy_loc_conf_t, upstream.bufs),
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216 NULL },
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217
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218 { ngx_string("proxy_busy_buffers_size"),
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219 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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220 ngx_conf_set_size_slot,
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221 NGX_HTTP_LOC_CONF_OFFSET,
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222 offsetof(ngx_http_proxy_loc_conf_t, upstream.busy_buffers_size),
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223 NULL },
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224
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225 { ngx_string("proxy_temp_path"),
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226 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1234,
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227 ngx_conf_set_path_slot,
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228 NGX_HTTP_LOC_CONF_OFFSET,
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229 offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_path),
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230 (void *) ngx_garbage_collector_temp_handler },
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231
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232 { ngx_string("proxy_max_temp_file_size"),
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233 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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234 ngx_conf_set_size_slot,
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235 NGX_HTTP_LOC_CONF_OFFSET,
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236 offsetof(ngx_http_proxy_loc_conf_t, upstream.max_temp_file_size),
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237 NULL },
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238
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239 { ngx_string("proxy_temp_file_write_size"),
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240 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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241 ngx_conf_set_size_slot,
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242 NGX_HTTP_LOC_CONF_OFFSET,
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243 offsetof(ngx_http_proxy_loc_conf_t, upstream.temp_file_write_size),
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244 NULL },
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245
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246 { ngx_string("proxy_next_upstream"),
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247 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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248 ngx_conf_set_bitmask_slot,
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249 NGX_HTTP_LOC_CONF_OFFSET,
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250 offsetof(ngx_http_proxy_loc_conf_t, upstream.next_upstream),
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251 &ngx_http_proxy_next_upstream_masks },
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252
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253 { ngx_string("proxy_pass_x_powered_by"),
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254 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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255 ngx_conf_set_flag_slot,
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256 NGX_HTTP_LOC_CONF_OFFSET,
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257 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_x_powered_by),
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258 NULL },
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259
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260 { ngx_string("proxy_pass_server"),
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261 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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262 ngx_conf_set_flag_slot,
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263 NGX_HTTP_LOC_CONF_OFFSET,
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264 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_server),
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265 NULL },
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266
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267 { ngx_string("proxy_pass_x_accel_expires"),
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268 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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269 ngx_conf_set_flag_slot,
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270 NGX_HTTP_LOC_CONF_OFFSET,
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271 offsetof(ngx_http_proxy_loc_conf_t, upstream.pass_x_accel_expires),
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272 NULL },
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273
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274 ngx_null_command
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275 };
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276
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277
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278 ngx_http_module_t ngx_http_proxy_module_ctx = {
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279 ngx_http_proxy_add_variables, /* preconfiguration */
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280 NULL, /* postconfiguration */
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281
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282 NULL, /* create main configuration */
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283 NULL, /* init main configuration */
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284
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285 NULL, /* create server configuration */
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286 NULL, /* merge server configuration */
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287
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288 ngx_http_proxy_create_loc_conf, /* create location configration */
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289 ngx_http_proxy_merge_loc_conf /* merge location configration */
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290 };
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291
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292
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293 ngx_module_t ngx_http_proxy_module = {
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294 NGX_MODULE_V1,
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295 &ngx_http_proxy_module_ctx, /* module context */
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296 ngx_http_proxy_commands, /* module directives */
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297 NGX_HTTP_MODULE, /* module type */
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298 NULL, /* init module */
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299 NULL /* init process */
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300 };
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301
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302
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303 static ngx_str_t ngx_http_proxy_methods[] = {
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304 ngx_string("GET "),
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305 ngx_string("HEAD "),
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306 ngx_string("POST ")
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307 };
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308
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309
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310 static char ngx_http_proxy_version[] = " HTTP/1.0" CRLF;
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311
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312
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313 static ngx_table_elt_t ngx_http_proxy_headers[] = {
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314 { 0, ngx_string("Host"), ngx_string("$proxy_host"), },
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315 { 0, ngx_string("Connection"), ngx_string("close"), },
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316 { 0, ngx_null_string, ngx_null_string }
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317 };
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318
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319
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320 static ngx_http_variable_t ngx_http_proxy_vars[] = {
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321
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322 { ngx_string("proxy_host"), ngx_http_proxy_host_variable, 0,
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323 NGX_HTTP_VAR_CHANGABLE },
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324
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325 { ngx_string("proxy_port"), ngx_http_proxy_port_variable, 0,
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326 NGX_HTTP_VAR_CHANGABLE },
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327
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328 { ngx_string("proxy_add_x_forwarded_for"),
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329 ngx_http_proxy_add_x_forwarded_for_variable, 0, 0 },
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330
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331 #if 0
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332 { ngx_string("proxy_add_via"), NULL, 0, 0 },
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333 #endif
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334
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335 { ngx_null_string, NULL, 0, 0 }
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336 };
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337
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338
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339 #if (NGX_PCRE)
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340 static ngx_str_t ngx_http_proxy_uri = ngx_string("/");
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341 #endif
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342
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343
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344 static ngx_int_t
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345 ngx_http_proxy_handler(ngx_http_request_t *r)
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346 {
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347 ngx_int_t rc;
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348 ngx_http_upstream_t *u;
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349 ngx_http_proxy_loc_conf_t *plcf;
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350
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351 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
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352
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353 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
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354 if (u == NULL) {
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355 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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356 }
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357
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358 u->peer.log = r->connection->log;
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359 u->peer.log_error = NGX_ERROR_ERR;
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360 u->peer.peers = plcf->peers;
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361 u->peer.tries = plcf->peers->number;
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362 #if (NGX_THREADS)
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363 u->peer.lock = &r->connection->lock;
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364 #endif
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365
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366 u->output.tag = (ngx_buf_tag_t) &ngx_http_proxy_module;
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367
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368 u->conf = &plcf->upstream;
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369
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370 u->create_request = ngx_http_proxy_create_request;
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371 u->reinit_request = ngx_http_proxy_reinit_request;
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372 u->process_header = ngx_http_proxy_process_status_line;
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373 u->abort_request = ngx_http_proxy_abort_request;
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374 u->finalize_request = ngx_http_proxy_finalize_request;
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375
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376 if (plcf->redirects) {
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377 u->rewrite_redirect = ngx_http_proxy_rewrite_redirect;
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378 }
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379
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380 u->pipe.input_filter = ngx_event_pipe_copy_input_filter;
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381
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382 u->accel = 1;
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383
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384 r->upstream = u;
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385
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386 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
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387
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388 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
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389 return rc;
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390 }
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391
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392 return NGX_DONE;
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393 }
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394
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395
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396 static ngx_int_t
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397 ngx_http_proxy_create_request(ngx_http_request_t *r)
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398 {
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399 size_t len, loc_len;
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400 ngx_uint_t i, key;
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401 uintptr_t escape;
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402 ngx_buf_t *b;
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403 ngx_str_t *hh;
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404 ngx_chain_t *cl, *body;
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405 ngx_list_part_t *part;
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406 ngx_table_elt_t *header;
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407 ngx_http_upstream_t *u;
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408 ngx_http_script_code_pt code;
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409 ngx_http_script_engine_t e, le;
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410 ngx_http_proxy_loc_conf_t *plcf;
|
|
411 ngx_http_script_len_code_pt lcode;
|
|
412
|
|
413 u = r->upstream;
|
|
414
|
|
415 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
416
|
|
417 len = sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1;
|
|
418
|
|
419 if (u->method) {
|
|
420 len += ngx_http_proxy_methods[u->method - 1].len + u->conf->uri.len;
|
|
421 } else {
|
|
422 len += r->method_name.len + 1 + u->conf->uri.len;
|
|
423 }
|
|
424
|
|
425 escape = 0;
|
|
426
|
|
427 loc_len = r->valid_location ? u->conf->location->len : 1;
|
|
428
|
|
429 if (plcf->upstream.pass_unparsed_uri && r->valid_unparsed_uri) {
|
|
430 len += r->unparsed_uri.len - 1;
|
|
431
|
|
432 } else {
|
|
433 if (r->quoted_uri) {
|
|
434 escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len,
|
|
435 r->uri.len - loc_len, NGX_ESCAPE_URI);
|
|
436 }
|
|
437
|
|
438 len += r->uri.len - loc_len + escape + sizeof("?") - 1 + r->args.len;
|
|
439 }
|
|
440
|
|
441 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
|
|
442
|
|
443 le.ip = plcf->headers_set_len->elts;
|
|
444 le.request = r;
|
|
445
|
|
446 while (*(uintptr_t *) le.ip) {
|
|
447 while (*(uintptr_t *) le.ip) {
|
|
448 lcode = *(ngx_http_script_len_code_pt *) le.ip;
|
|
449 len += lcode(&le);
|
|
450 }
|
|
451 le.ip += sizeof(uintptr_t);
|
|
452 }
|
|
453
|
|
454
|
|
455 hh = (ngx_str_t *) plcf->headers_set_hash->buckets;
|
|
456
|
|
457 if (plcf->upstream.pass_request_headers) {
|
|
458 part = &r->headers_in.headers.part;
|
|
459 header = part->elts;
|
|
460
|
|
461 for (i = 0; /* void */; i++) {
|
|
462
|
|
463 if (i >= part->nelts) {
|
|
464 if (part->next == NULL) {
|
|
465 break;
|
|
466 }
|
|
467
|
|
468 part = part->next;
|
|
469 header = part->elts;
|
|
470 i = 0;
|
|
471 }
|
|
472
|
|
473 key = header[i].hash % plcf->headers_set_hash->hash_size;
|
|
474
|
|
475 if (hh[key].len == header[i].key.len
|
|
476 && ngx_strcasecmp(hh[key].data, header[i].key.data) == 0)
|
|
477 {
|
|
478 continue;
|
|
479 }
|
|
480
|
|
481 len += header[i].key.len + sizeof(": ") - 1
|
|
482 + header[i].value.len + sizeof(CRLF) - 1;
|
|
483 }
|
|
484 }
|
|
485
|
|
486
|
|
487 b = ngx_create_temp_buf(r->pool, len);
|
|
488 if (b == NULL) {
|
|
489 return NGX_ERROR;
|
|
490 }
|
|
491
|
|
492 cl = ngx_alloc_chain_link(r->pool);
|
|
493 if (cl == NULL) {
|
|
494 return NGX_ERROR;
|
|
495 }
|
|
496
|
|
497 cl->buf = b;
|
|
498
|
|
499
|
|
500 /* the request line */
|
|
501
|
|
502 if (u->method) {
|
|
503 b->last = ngx_cpymem(b->last,
|
|
504 ngx_http_proxy_methods[u->method - 1].data,
|
|
505 ngx_http_proxy_methods[u->method - 1].len);
|
|
506 } else {
|
|
507 b->last = ngx_cpymem(b->last, r->method_name.data,
|
|
508 r->method_name.len + 1);
|
|
509 }
|
|
510
|
|
511 b->last = ngx_cpymem(b->last, u->conf->uri.data, u->conf->uri.len);
|
|
512
|
|
513 if (plcf->upstream.pass_unparsed_uri && r->valid_unparsed_uri) {
|
|
514 b->last = ngx_cpymem(b->last, r->unparsed_uri.data + 1,
|
|
515 r->unparsed_uri.len - 1);
|
|
516 } else {
|
|
517 if (escape) {
|
|
518 ngx_escape_uri(b->last, r->uri.data + loc_len,
|
|
519 r->uri.len - loc_len, NGX_ESCAPE_URI);
|
|
520 b->last += r->uri.len - loc_len + escape;
|
|
521
|
|
522 } else {
|
|
523 b->last = ngx_cpymem(b->last, r->uri.data + loc_len,
|
|
524 r->uri.len - loc_len);
|
|
525 }
|
|
526
|
|
527 if (r->args.len > 0) {
|
|
528 *b->last++ = '?';
|
|
529 b->last = ngx_cpymem(b->last, r->args.data, r->args.len);
|
|
530 }
|
|
531 }
|
|
532
|
|
533 b->last = ngx_cpymem(b->last, ngx_http_proxy_version,
|
|
534 sizeof(ngx_http_proxy_version) - 1);
|
|
535
|
|
536
|
|
537 e.ip = plcf->headers_set->elts;
|
|
538 e.pos = b->last;
|
|
539 e.request = r;
|
|
540
|
|
541 le.ip = plcf->headers_set_len->elts;
|
|
542
|
|
543 while (*(uintptr_t *) le.ip) {
|
|
544 lcode = *(ngx_http_script_len_code_pt *) le.ip;
|
|
545 lcode(&le);
|
|
546
|
|
547 if (*(ngx_http_script_len_code_pt *) le.ip) {
|
|
548
|
|
549 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) {
|
|
550 lcode = *(ngx_http_script_len_code_pt *) le.ip;
|
|
551 }
|
|
552
|
|
553 e.skip = (len == sizeof(CRLF) - 1) ? 1 : 0;
|
|
554
|
|
555 } else {
|
|
556 e.skip = 0;
|
|
557 }
|
|
558
|
|
559 le.ip += sizeof(uintptr_t);
|
|
560
|
|
561 while (*(uintptr_t *) e.ip) {
|
|
562 code = *(ngx_http_script_code_pt *) e.ip;
|
|
563 code((ngx_http_script_engine_t *) &e);
|
|
564 }
|
|
565 e.ip += sizeof(uintptr_t);
|
|
566 }
|
|
567
|
|
568 b->last = e.pos;
|
|
569
|
|
570
|
|
571 if (plcf->upstream.pass_request_headers) {
|
|
572 part = &r->headers_in.headers.part;
|
|
573 header = part->elts;
|
|
574
|
|
575 for (i = 0; /* void */; i++) {
|
|
576
|
|
577 if (i >= part->nelts) {
|
|
578 if (part->next == NULL) {
|
|
579 break;
|
|
580 }
|
|
581
|
|
582 part = part->next;
|
|
583 header = part->elts;
|
|
584 i = 0;
|
|
585 }
|
|
586
|
|
587 key = header[i].hash % plcf->headers_set_hash->hash_size;
|
|
588
|
|
589 if (hh[key].len == header[i].key.len
|
|
590 && ngx_strcasecmp(hh[key].data, header[i].key.data) == 0)
|
|
591 {
|
|
592 continue;
|
|
593 }
|
|
594
|
|
595 b->last = ngx_cpymem(b->last, header[i].key.data,
|
|
596 header[i].key.len);
|
|
597
|
|
598 *b->last++ = ':'; *b->last++ = ' ';
|
|
599
|
|
600 b->last = ngx_cpymem(b->last, header[i].value.data,
|
|
601 header[i].value.len);
|
|
602
|
|
603 *b->last++ = CR; *b->last++ = LF;
|
|
604
|
|
605 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
606 "http proxy header: \"%V: %V\"",
|
|
607 &header[i].key, &header[i].value);
|
|
608 }
|
|
609 }
|
|
610
|
|
611 /* add "\r\n" at the header end */
|
|
612 *b->last++ = CR; *b->last++ = LF;
|
|
613
|
|
614 #if (NGX_DEBUG)
|
|
615 {
|
|
616 ngx_str_t s;
|
|
617
|
|
618 s.len = b->last - b->pos;
|
|
619 s.data = b->pos;
|
|
620 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
621 "http proxy header:\n\"%V\"", &s);
|
|
622 }
|
|
623 #endif
|
|
624
|
|
625 if (plcf->upstream.pass_request_body) {
|
|
626
|
|
627 body = u->request_bufs;
|
|
628 u->request_bufs = cl;
|
|
629
|
|
630 while (body) {
|
|
631 b = ngx_alloc_buf(r->pool);
|
|
632 if (b == NULL) {
|
|
633 return NGX_ERROR;
|
|
634 }
|
|
635
|
|
636 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
|
|
637
|
|
638 cl->next = ngx_alloc_chain_link(r->pool);
|
|
639 if (cl->next == NULL) {
|
|
640 return NGX_ERROR;
|
|
641 }
|
|
642
|
|
643 cl = cl->next;
|
|
644 cl->buf = b;
|
|
645
|
|
646 body = body->next;
|
|
647 }
|
|
648
|
|
649 } else {
|
|
650 u->request_bufs = cl;
|
|
651 }
|
|
652
|
|
653 cl->next = NULL;
|
|
654
|
|
655 return NGX_OK;
|
|
656 }
|
|
657
|
|
658
|
|
659 static ngx_int_t
|
|
660 ngx_http_proxy_reinit_request(ngx_http_request_t *r)
|
|
661 {
|
|
662 ngx_http_proxy_ctx_t *p;
|
|
663
|
|
664 p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
|
665
|
|
666 if (p == NULL) {
|
|
667 return NGX_OK;
|
|
668 }
|
|
669
|
|
670 p->status = 0;
|
|
671 p->status_count = 0;
|
|
672 p->status_start = NULL;
|
|
673 p->status_end = NULL;
|
|
674
|
|
675 r->upstream->process_header = ngx_http_proxy_process_status_line;
|
|
676
|
|
677 return NGX_OK;
|
|
678 }
|
|
679
|
|
680
|
|
681 static ngx_int_t
|
|
682 ngx_http_proxy_process_status_line(ngx_http_request_t *r)
|
|
683 {
|
|
684 ngx_int_t rc;
|
|
685 ngx_http_upstream_t *u;
|
|
686 ngx_http_proxy_ctx_t *p;
|
|
687
|
|
688 p = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
|
689
|
|
690 if (p == NULL) {
|
|
691 p = ngx_pcalloc(r->pool, sizeof(ngx_http_proxy_ctx_t));
|
|
692 if (p == NULL) {
|
|
693 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
694 }
|
|
695
|
|
696 ngx_http_set_ctx(r, p, ngx_http_proxy_module);
|
|
697 }
|
|
698
|
|
699 rc = ngx_http_proxy_parse_status_line(r, p);
|
|
700
|
|
701 if (rc == NGX_AGAIN) {
|
|
702 return rc;
|
|
703 }
|
|
704
|
|
705 u = r->upstream;
|
|
706
|
|
707 if (rc == NGX_HTTP_PROXY_PARSE_NO_HEADER) {
|
|
708 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
709 "upstream sent no valid HTTP/1.0 header");
|
|
710
|
|
711 if (u->accel) {
|
|
712 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
713 }
|
|
714
|
|
715 r->http_version = NGX_HTTP_VERSION_9;
|
|
716 p->status = NGX_HTTP_OK;
|
|
717
|
|
718 return NGX_OK;
|
|
719 }
|
|
720
|
|
721 r->headers_out.status = p->status;
|
|
722 u->state->status = p->status;
|
|
723
|
|
724 r->headers_out.status_line.len = p->status_end - p->status_start;
|
|
725 r->headers_out.status_line.data = ngx_palloc(r->pool,
|
|
726 r->headers_out.status_line.len);
|
|
727 if (r->headers_out.status_line.data == NULL) {
|
|
728 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
729 }
|
|
730 ngx_memcpy(r->headers_out.status_line.data, p->status_start,
|
|
731 r->headers_out.status_line.len);
|
|
732
|
|
733 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
734 "http proxy status %ui \"%V\"",
|
|
735 r->headers_out.status, &r->headers_out.status_line);
|
|
736
|
|
737 u->process_header = ngx_http_proxy_process_header;
|
|
738
|
|
739 return ngx_http_proxy_process_header(r);
|
|
740 }
|
|
741
|
|
742
|
|
743 static ngx_int_t
|
|
744 ngx_http_proxy_parse_status_line(ngx_http_request_t *r, ngx_http_proxy_ctx_t *p)
|
|
745 {
|
|
746 u_char ch;
|
|
747 u_char *pos;
|
|
748 ngx_http_upstream_t *u;
|
|
749 enum {
|
|
750 sw_start = 0,
|
|
751 sw_H,
|
|
752 sw_HT,
|
|
753 sw_HTT,
|
|
754 sw_HTTP,
|
|
755 sw_first_major_digit,
|
|
756 sw_major_digit,
|
|
757 sw_first_minor_digit,
|
|
758 sw_minor_digit,
|
|
759 sw_status,
|
|
760 sw_space_after_status,
|
|
761 sw_status_text,
|
|
762 sw_almost_done
|
|
763 } state;
|
|
764
|
|
765 u = r->upstream;
|
|
766
|
|
767 state = r->state;
|
|
768
|
|
769 for (pos = u->header_in.pos; pos < u->header_in.last; pos++) {
|
|
770 ch = *pos;
|
|
771
|
|
772 switch (state) {
|
|
773
|
|
774 /* "HTTP/" */
|
|
775 case sw_start:
|
|
776 switch (ch) {
|
|
777 case 'H':
|
|
778 state = sw_H;
|
|
779 break;
|
|
780 default:
|
|
781 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
782 }
|
|
783 break;
|
|
784
|
|
785 case sw_H:
|
|
786 switch (ch) {
|
|
787 case 'T':
|
|
788 state = sw_HT;
|
|
789 break;
|
|
790 default:
|
|
791 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
792 }
|
|
793 break;
|
|
794
|
|
795 case sw_HT:
|
|
796 switch (ch) {
|
|
797 case 'T':
|
|
798 state = sw_HTT;
|
|
799 break;
|
|
800 default:
|
|
801 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
802 }
|
|
803 break;
|
|
804
|
|
805 case sw_HTT:
|
|
806 switch (ch) {
|
|
807 case 'P':
|
|
808 state = sw_HTTP;
|
|
809 break;
|
|
810 default:
|
|
811 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
812 }
|
|
813 break;
|
|
814
|
|
815 case sw_HTTP:
|
|
816 switch (ch) {
|
|
817 case '/':
|
|
818 state = sw_first_major_digit;
|
|
819 break;
|
|
820 default:
|
|
821 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
822 }
|
|
823 break;
|
|
824
|
|
825 /* the first digit of major HTTP version */
|
|
826 case sw_first_major_digit:
|
|
827 if (ch < '1' || ch > '9') {
|
|
828 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
829 }
|
|
830
|
|
831 state = sw_major_digit;
|
|
832 break;
|
|
833
|
|
834 /* the major HTTP version or dot */
|
|
835 case sw_major_digit:
|
|
836 if (ch == '.') {
|
|
837 state = sw_first_minor_digit;
|
|
838 break;
|
|
839 }
|
|
840
|
|
841 if (ch < '0' || ch > '9') {
|
|
842 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
843 }
|
|
844
|
|
845 break;
|
|
846
|
|
847 /* the first digit of minor HTTP version */
|
|
848 case sw_first_minor_digit:
|
|
849 if (ch < '0' || ch > '9') {
|
|
850 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
851 }
|
|
852
|
|
853 state = sw_minor_digit;
|
|
854 break;
|
|
855
|
|
856 /* the minor HTTP version or the end of the request line */
|
|
857 case sw_minor_digit:
|
|
858 if (ch == ' ') {
|
|
859 state = sw_status;
|
|
860 break;
|
|
861 }
|
|
862
|
|
863 if (ch < '0' || ch > '9') {
|
|
864 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
865 }
|
|
866
|
|
867 break;
|
|
868
|
|
869 /* HTTP status code */
|
|
870 case sw_status:
|
|
871 if (ch < '0' || ch > '9') {
|
|
872 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
873 }
|
|
874
|
|
875 p->status = p->status * 10 + ch - '0';
|
|
876
|
|
877 if (++p->status_count == 3) {
|
|
878 state = sw_space_after_status;
|
|
879 p->status_start = pos - 2;
|
|
880 }
|
|
881
|
|
882 break;
|
|
883
|
|
884 /* space or end of line */
|
|
885 case sw_space_after_status:
|
|
886 switch (ch) {
|
|
887 case ' ':
|
|
888 state = sw_status_text;
|
|
889 break;
|
|
890 case '.': /* IIS may send 403.1, 403.2, etc */
|
|
891 state = sw_status_text;
|
|
892 break;
|
|
893 case CR:
|
|
894 state = sw_almost_done;
|
|
895 break;
|
|
896 case LF:
|
|
897 goto done;
|
|
898 default:
|
|
899 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
900 }
|
|
901 break;
|
|
902
|
|
903 /* any text until end of line */
|
|
904 case sw_status_text:
|
|
905 switch (ch) {
|
|
906 case CR:
|
|
907 state = sw_almost_done;
|
|
908
|
|
909 break;
|
|
910 case LF:
|
|
911 goto done;
|
|
912 }
|
|
913 break;
|
|
914
|
|
915 /* end of request line */
|
|
916 case sw_almost_done:
|
|
917 p->status_end = pos - 1;
|
|
918 switch (ch) {
|
|
919 case LF:
|
|
920 goto done;
|
|
921 default:
|
|
922 return NGX_HTTP_PROXY_PARSE_NO_HEADER;
|
|
923 }
|
|
924 }
|
|
925 }
|
|
926
|
|
927 u->header_in.pos = pos + 1;
|
|
928 r->state = state;
|
|
929
|
|
930 return NGX_AGAIN;
|
|
931
|
|
932 done:
|
|
933
|
|
934 u->header_in.pos = pos + 1;
|
|
935
|
|
936 if (p->status_end == NULL) {
|
|
937 p->status_end = pos;
|
|
938 }
|
|
939
|
|
940 r->state = sw_start;
|
|
941
|
|
942 return NGX_OK;
|
|
943 }
|
|
944
|
|
945
|
|
946 static ngx_int_t
|
|
947 ngx_http_proxy_process_header(ngx_http_request_t *r)
|
|
948 {
|
|
949 ngx_int_t rc;
|
|
950 ngx_uint_t key;
|
|
951 ngx_table_elt_t *h;
|
|
952 ngx_http_upstream_header_t *hh;
|
|
953 ngx_http_upstream_main_conf_t *umcf;
|
|
954
|
|
955 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
956 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
957
|
|
958 for ( ;; ) {
|
|
959
|
|
960 rc = ngx_http_parse_header_line(r, &r->upstream->header_in);
|
|
961
|
|
962 if (rc == NGX_OK) {
|
|
963
|
|
964 /* a header line has been parsed successfully */
|
|
965
|
|
966 h = ngx_list_push(&r->upstream->headers_in.headers);
|
|
967 if (h == NULL) {
|
|
968 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
969 }
|
|
970
|
|
971 h->hash = r->header_hash;
|
|
972
|
|
973 h->key.len = r->header_name_end - r->header_name_start;
|
|
974 h->value.len = r->header_end - r->header_start;
|
|
975
|
|
976 h->key.data = ngx_palloc(r->pool,
|
|
977 h->key.len + 1 + h->value.len + 1);
|
|
978 if (h->key.data == NULL) {
|
|
979 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
980 }
|
|
981
|
|
982 h->value.data = h->key.data + h->key.len + 1;
|
|
983
|
|
984 ngx_cpystrn(h->key.data, r->header_name_start, h->key.len + 1);
|
|
985 ngx_cpystrn(h->value.data, r->header_start, h->value.len + 1);
|
|
986
|
|
987 key = h->hash % umcf->headers_in_hash.hash_size;
|
|
988
|
|
989 if (hh[key].name.len == h->key.len
|
|
990 && ngx_strcasecmp(hh[key].name.data, h->key.data) == 0)
|
|
991 {
|
|
992 if (hh[key].handler(r, h, hh[key].offset) != NGX_OK) {
|
|
993 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
994 }
|
|
995 }
|
|
996
|
|
997 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
998 "http proxy header: \"%V: %V\"",
|
|
999 &h->key, &h->value);
|
|
1000
|
|
1001 continue;
|
|
1002 }
|
|
1003
|
|
1004 if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
|
|
1005
|
|
1006 /* a whole header has been parsed successfully */
|
|
1007
|
|
1008 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1009 "http proxy header done");
|
|
1010
|
|
1011 return NGX_OK;
|
|
1012 }
|
|
1013
|
|
1014 /* there was error while a header line parsing */
|
|
1015
|
|
1016 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
1017 ngx_http_upstream_header_errors[rc
|
|
1018 - NGX_HTTP_PARSE_HEADER_ERROR]);
|
|
1019
|
|
1020 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
1021 }
|
|
1022 }
|
|
1023
|
|
1024
|
|
1025 static void
|
|
1026 ngx_http_proxy_abort_request(ngx_http_request_t *r)
|
|
1027 {
|
|
1028 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1029 "abort http proxy request");
|
|
1030
|
|
1031 return;
|
|
1032 }
|
|
1033
|
|
1034
|
|
1035 static void
|
|
1036 ngx_http_proxy_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
1037 {
|
|
1038 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1039 "finalize http proxy request");
|
|
1040
|
|
1041 return;
|
|
1042 }
|
|
1043
|
|
1044
|
|
1045 static ngx_http_variable_value_t *
|
|
1046 ngx_http_proxy_host_variable(ngx_http_request_t *r, uintptr_t data)
|
|
1047 {
|
|
1048 ngx_http_variable_value_t *vv;
|
|
1049 ngx_http_proxy_loc_conf_t *plcf;
|
|
1050
|
|
1051 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
1052 if (vv == NULL) {
|
|
1053 return NULL;
|
|
1054 }
|
|
1055
|
|
1056 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
1057
|
|
1058 vv->value = 0;
|
|
1059 vv->text = plcf->host_header;
|
|
1060
|
|
1061 return vv;
|
|
1062 }
|
|
1063
|
|
1064
|
|
1065 static ngx_http_variable_value_t *
|
|
1066 ngx_http_proxy_port_variable(ngx_http_request_t *r, uintptr_t data)
|
|
1067 {
|
|
1068 ngx_http_variable_value_t *vv;
|
|
1069 ngx_http_proxy_loc_conf_t *plcf;
|
|
1070
|
|
1071 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
1072 if (vv == NULL) {
|
|
1073 return NULL;
|
|
1074 }
|
|
1075
|
|
1076 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
1077
|
|
1078 vv->value = 0;
|
|
1079 vv->text = plcf->port_text;
|
|
1080
|
|
1081 return vv;
|
|
1082 }
|
|
1083
|
|
1084
|
|
1085 static ngx_http_variable_value_t *
|
|
1086 ngx_http_proxy_add_x_forwarded_for_variable(ngx_http_request_t *r,
|
|
1087 uintptr_t data)
|
|
1088 {
|
|
1089 u_char *p;
|
|
1090 ngx_http_variable_value_t *vv;
|
|
1091
|
|
1092 vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
1093 if (vv == NULL) {
|
|
1094 return NULL;
|
|
1095 }
|
|
1096
|
|
1097 vv->value = 0;
|
|
1098
|
|
1099 if (r->headers_in.x_forwarded_for == NULL) {
|
|
1100 vv->text = r->connection->addr_text;
|
|
1101 return vv;
|
|
1102 }
|
|
1103
|
|
1104 vv->text.len = r->headers_in.x_forwarded_for->value.len
|
|
1105 + sizeof(", ") - 1 + r->connection->addr_text.len;
|
|
1106
|
|
1107 p = ngx_palloc(r->pool, vv->text.len);
|
|
1108 if (p == NULL) {
|
|
1109 return NULL;
|
|
1110 }
|
|
1111
|
|
1112 vv->text.data = p;
|
|
1113
|
|
1114 p = ngx_cpymem(p, r->headers_in.x_forwarded_for->value.data,
|
|
1115 r->headers_in.x_forwarded_for->value.len);
|
|
1116
|
|
1117 *p++ = ','; *p++ = ' ';
|
|
1118
|
|
1119 ngx_memcpy(p, r->connection->addr_text.data, r->connection->addr_text.len);
|
|
1120
|
|
1121 return vv;
|
|
1122 }
|
|
1123
|
|
1124
|
|
1125 static ngx_int_t
|
|
1126 ngx_http_proxy_rewrite_redirect(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1127 size_t prefix)
|
|
1128 {
|
|
1129 ngx_int_t rc;
|
|
1130 ngx_uint_t i;
|
|
1131 ngx_http_proxy_loc_conf_t *plcf;
|
|
1132 ngx_http_proxy_redirect_t *pr;
|
|
1133
|
|
1134 plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
|
|
1135
|
|
1136 pr = plcf->redirects->elts;
|
|
1137
|
|
1138 if (pr == NULL) {
|
|
1139 return NGX_DECLINED;
|
|
1140 }
|
|
1141
|
|
1142 for (i = 0; i < plcf->redirects->nelts; i++) {
|
|
1143 rc = pr->handler(r, h, prefix, pr);
|
|
1144
|
|
1145 if (rc != NGX_DECLINED) {
|
|
1146 return rc;
|
|
1147 }
|
|
1148 }
|
|
1149
|
|
1150 return NGX_DECLINED;
|
|
1151 }
|
|
1152
|
|
1153
|
|
1154 static ngx_int_t
|
|
1155 ngx_http_proxy_rewrite_redirect_text(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1156 size_t prefix, ngx_http_proxy_redirect_t *pr)
|
|
1157 {
|
|
1158 size_t len;
|
|
1159 u_char *data, *p;
|
|
1160
|
|
1161 if (pr->redirect.len > h->value.len - prefix
|
|
1162 || ngx_rstrncmp(h->value.data + prefix, pr->redirect.data,
|
|
1163 pr->redirect.len) != 0)
|
|
1164 {
|
|
1165 return NGX_DECLINED;
|
|
1166 }
|
|
1167
|
|
1168 len = prefix + pr->replacement.text.len + h->value.len - pr->redirect.len;
|
|
1169
|
|
1170 data = ngx_palloc(r->pool, len);
|
|
1171 if (data == NULL) {
|
|
1172 return NGX_ERROR;
|
|
1173 }
|
|
1174
|
|
1175 p = data;
|
|
1176
|
|
1177 if (prefix) {
|
|
1178 p = ngx_cpymem(p, h->value.data, prefix);
|
|
1179 }
|
|
1180
|
|
1181 p = ngx_cpymem(p, pr->replacement.text.data, pr->replacement.text.len);
|
|
1182
|
|
1183 ngx_memcpy(p, h->value.data + prefix + pr->redirect.len,
|
|
1184 h->value.len - pr->redirect.len - prefix);
|
|
1185
|
|
1186 h->value.len = len;
|
|
1187 h->value.data = data;
|
|
1188
|
|
1189 return NGX_OK;
|
|
1190 }
|
|
1191
|
|
1192
|
|
1193 static ngx_int_t
|
|
1194 ngx_http_proxy_rewrite_redirect_vars(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1195 size_t prefix, ngx_http_proxy_redirect_t *pr)
|
|
1196 {
|
|
1197 size_t len;
|
|
1198 u_char *data, *p;
|
|
1199 ngx_http_script_code_pt code;
|
|
1200 ngx_http_script_engine_t e;
|
|
1201 ngx_http_script_len_code_pt lcode;
|
|
1202
|
|
1203 if (pr->redirect.len > h->value.len - prefix
|
|
1204 || ngx_rstrncmp(h->value.data + prefix, pr->redirect.data,
|
|
1205 pr->redirect.len) != 0)
|
|
1206 {
|
|
1207 return NGX_DECLINED;
|
|
1208 }
|
|
1209
|
|
1210 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
|
|
1211
|
|
1212 e.ip = pr->replacement.vars.lengths;
|
|
1213 e.request = r;
|
|
1214
|
|
1215 for (len = prefix; *(uintptr_t *) e.ip; len += lcode(&e)) {
|
|
1216 lcode = *(ngx_http_script_len_code_pt *) e.ip;
|
|
1217 }
|
|
1218
|
|
1219 data = ngx_palloc(r->pool, len);
|
|
1220 if (data == NULL) {
|
|
1221 return NGX_ERROR;
|
|
1222 }
|
|
1223
|
|
1224 p = data;
|
|
1225
|
|
1226 if (prefix) {
|
|
1227 p = ngx_cpymem(p, h->value.data, prefix);
|
|
1228 }
|
|
1229
|
|
1230 e.ip = pr->replacement.vars.values;
|
|
1231 e.pos = p;
|
|
1232
|
|
1233 while (*(uintptr_t *) e.ip) {
|
|
1234 code = *(ngx_http_script_code_pt *) e.ip;
|
|
1235 code(&e);
|
|
1236 }
|
|
1237
|
|
1238 h->value.len = len;
|
|
1239 h->value.data = data;
|
|
1240
|
|
1241 return NGX_OK;
|
|
1242 }
|
|
1243
|
|
1244
|
|
1245 static ngx_int_t
|
|
1246 ngx_http_proxy_add_variables(ngx_conf_t *cf)
|
|
1247 {
|
|
1248 ngx_http_variable_t *var, *v;
|
|
1249
|
|
1250 for (v = ngx_http_proxy_vars; v->name.len; v++) {
|
|
1251 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
1252 if (var == NULL) {
|
|
1253 return NGX_ERROR;
|
|
1254 }
|
|
1255
|
|
1256 var->handler = v->handler;
|
|
1257 var->data = v->data;
|
|
1258 }
|
|
1259
|
|
1260 return NGX_OK;
|
|
1261 }
|
|
1262
|
|
1263
|
|
1264 static void *
|
|
1265 ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
|
|
1266 {
|
|
1267 ngx_http_proxy_loc_conf_t *conf;
|
|
1268
|
|
1269 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_proxy_loc_conf_t));
|
|
1270 if (conf == NULL) {
|
|
1271 return NGX_CONF_ERROR;
|
|
1272 }
|
|
1273
|
|
1274 /*
|
|
1275 * set by ngx_pcalloc():
|
|
1276 *
|
|
1277 * conf->upstream.bufs.num = 0;
|
|
1278 * conf->upstream.path = NULL;
|
|
1279 * conf->upstream.next_upstream = 0;
|
|
1280 * conf->upstream.temp_path = NULL;
|
|
1281 * conf->upstream.schema = { 0, NULL };
|
|
1282 * conf->upstream.uri = { 0, NULL };
|
|
1283 * conf->upstream.location = NULL;
|
|
1284 *
|
|
1285 * conf->headers_source = NULL;
|
|
1286 * conf->headers_set_len = NULL;
|
|
1287 * conf->headers_set = NULL;
|
|
1288 * conf->headers_set_hash = NULL;
|
|
1289 * conf->rewrite_locations = NULL;
|
|
1290 */
|
|
1291
|
|
1292 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
1293 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
1294 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
1295
|
|
1296 conf->upstream.send_lowat = NGX_CONF_UNSET_SIZE;
|
|
1297 conf->upstream.header_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
1298 conf->upstream.busy_buffers_size = NGX_CONF_UNSET_SIZE;
|
|
1299 conf->upstream.max_temp_file_size = NGX_CONF_UNSET_SIZE;
|
|
1300 conf->upstream.temp_file_write_size = NGX_CONF_UNSET_SIZE;
|
|
1301
|
|
1302 conf->upstream.pass_unparsed_uri = NGX_CONF_UNSET;
|
|
1303 conf->upstream.method = NGX_CONF_UNSET_UINT;
|
|
1304 conf->upstream.pass_request_headers = NGX_CONF_UNSET;
|
|
1305 conf->upstream.pass_request_body = NGX_CONF_UNSET;
|
|
1306
|
|
1307 conf->upstream.redirect_errors = NGX_CONF_UNSET;
|
|
1308
|
|
1309 /* "proxy_cyclic_temp_file" is disabled */
|
|
1310 conf->upstream.cyclic_temp_file = 0;
|
|
1311
|
|
1312 conf->upstream.pass_x_powered_by = NGX_CONF_UNSET;
|
|
1313 conf->upstream.pass_server = NGX_CONF_UNSET;
|
|
1314 conf->upstream.pass_date = 0;
|
|
1315 conf->upstream.pass_x_accel_expires = NGX_CONF_UNSET;
|
|
1316
|
|
1317 conf->redirect = NGX_CONF_UNSET;
|
|
1318
|
|
1319 return conf;
|
|
1320 }
|
|
1321
|
|
1322
|
|
1323 static char *
|
|
1324 ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
1325 {
|
|
1326 ngx_http_proxy_loc_conf_t *prev = parent;
|
|
1327 ngx_http_proxy_loc_conf_t *conf = child;
|
|
1328
|
|
1329 u_char *p;
|
|
1330 size_t size;
|
|
1331 uintptr_t *code;
|
|
1332 ngx_str_t *name;
|
|
1333 ngx_uint_t i;
|
|
1334 ngx_table_elt_t *src, *s, *h;
|
|
1335 ngx_http_proxy_redirect_t *pr;
|
|
1336 ngx_http_script_compile_t sc;
|
|
1337 ngx_http_script_copy_code_t *copy;
|
|
1338
|
|
1339 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
1340 prev->upstream.connect_timeout, 60000);
|
|
1341
|
|
1342 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
1343 prev->upstream.send_timeout, 60000);
|
|
1344
|
|
1345 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
1346 prev->upstream.read_timeout, 60000);
|
|
1347
|
|
1348 ngx_conf_merge_size_value(conf->upstream.send_lowat,
|
|
1349 prev->upstream.send_lowat, 0);
|
|
1350
|
|
1351 ngx_conf_merge_size_value(conf->upstream.header_buffer_size,
|
|
1352 prev->upstream.header_buffer_size,
|
|
1353 (size_t) ngx_pagesize);
|
|
1354
|
|
1355 ngx_conf_merge_bufs_value(conf->upstream.bufs, prev->upstream.bufs,
|
|
1356 8, ngx_pagesize);
|
|
1357
|
|
1358 if (conf->upstream.bufs.num < 2) {
|
|
1359 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1360 "there must be at least 2 \"proxy_buffers\"");
|
|
1361 return NGX_CONF_ERROR;
|
|
1362 }
|
|
1363
|
|
1364
|
|
1365 size = conf->upstream.header_buffer_size;
|
|
1366 if (size < conf->upstream.bufs.size) {
|
|
1367 size = conf->upstream.bufs.size;
|
|
1368 }
|
|
1369
|
|
1370
|
|
1371 ngx_conf_merge_size_value(conf->upstream.busy_buffers_size,
|
|
1372 prev->upstream.busy_buffers_size,
|
|
1373 NGX_CONF_UNSET_SIZE);
|
|
1374
|
|
1375 if (conf->upstream.busy_buffers_size == NGX_CONF_UNSET_SIZE) {
|
|
1376 conf->upstream.busy_buffers_size = 2 * size;
|
|
1377
|
|
1378 } else if (conf->upstream.busy_buffers_size < size) {
|
|
1379 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1380 "\"proxy_busy_buffers_size\" must be equal or bigger than "
|
|
1381 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
1382 "one of the \"proxy_buffers\"");
|
|
1383
|
|
1384 return NGX_CONF_ERROR;
|
|
1385
|
|
1386 } else if (conf->upstream.busy_buffers_size
|
|
1387 > (conf->upstream.bufs.num - 1) * conf->upstream.bufs.size)
|
|
1388 {
|
|
1389 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1390 "\"proxy_busy_buffers_size\" must be less than "
|
|
1391 "the size of all \"proxy_buffers\" minus one buffer");
|
|
1392
|
|
1393 return NGX_CONF_ERROR;
|
|
1394 }
|
|
1395
|
|
1396
|
|
1397 ngx_conf_merge_size_value(conf->upstream.temp_file_write_size,
|
|
1398 prev->upstream.temp_file_write_size,
|
|
1399 NGX_CONF_UNSET_SIZE);
|
|
1400
|
|
1401 if (conf->upstream.temp_file_write_size == NGX_CONF_UNSET_SIZE) {
|
|
1402 conf->upstream.temp_file_write_size = 2 * size;
|
|
1403
|
|
1404 } else if (conf->upstream.temp_file_write_size < size) {
|
|
1405 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1406 "\"proxy_temp_file_write_size\" must be equal or bigger than "
|
|
1407 "maximum of the value of \"proxy_header_buffer_size\" and "
|
|
1408 "one of the \"proxy_buffers\"");
|
|
1409
|
|
1410 return NGX_CONF_ERROR;
|
|
1411 }
|
|
1412
|
|
1413
|
|
1414 ngx_conf_merge_size_value(conf->upstream.max_temp_file_size,
|
|
1415 prev->upstream.max_temp_file_size,
|
|
1416 NGX_CONF_UNSET_SIZE);
|
|
1417
|
|
1418 if (conf->upstream.max_temp_file_size == NGX_CONF_UNSET_SIZE) {
|
|
1419
|
|
1420 conf->upstream.max_temp_file_size = 1024 * 1024 * 1024;
|
|
1421
|
|
1422 } else if (conf->upstream.max_temp_file_size != 0
|
|
1423 && conf->upstream.max_temp_file_size < size)
|
|
1424 {
|
|
1425 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1426 "\"fastcgi_max_temp_file_size\" must be equal to zero to disable "
|
|
1427 "the temporary files usage or must be equal or bigger than "
|
|
1428 "maximum of the value of \"fastcgi_header_buffer_size\" and "
|
|
1429 "one of the \"fastcgi_buffers\"");
|
|
1430
|
|
1431 return NGX_CONF_ERROR;
|
|
1432 }
|
|
1433
|
|
1434 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
1435 prev->upstream.next_upstream,
|
|
1436 (NGX_CONF_BITMASK_SET
|
|
1437 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
1438 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
1439
|
|
1440 ngx_conf_merge_path_value(conf->upstream.temp_path,
|
|
1441 prev->upstream.temp_path,
|
|
1442 NGX_HTTP_PROXY_TEMP_PATH, 1, 2, 0,
|
|
1443 ngx_garbage_collector_temp_handler, cf);
|
|
1444
|
|
1445 ngx_conf_merge_msec_value(conf->upstream.pass_unparsed_uri,
|
|
1446 prev->upstream.pass_unparsed_uri, 0);
|
|
1447
|
|
1448 if (conf->upstream.pass_unparsed_uri && conf->upstream.location->len > 1) {
|
|
1449 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
1450 "\"proxy_pass_unparsed_uri\" can be set for "
|
|
1451 "location \"/\" or given by regular expression.");
|
|
1452 return NGX_CONF_ERROR;
|
|
1453 }
|
|
1454
|
|
1455 if (conf->upstream.method == NGX_CONF_UNSET_UINT) {
|
|
1456 conf->upstream.method = prev->upstream.method;
|
|
1457 }
|
|
1458
|
|
1459 ngx_conf_merge_value(conf->upstream.pass_request_headers,
|
|
1460 prev->upstream.pass_request_headers, 1);
|
|
1461 ngx_conf_merge_value(conf->upstream.pass_request_body,
|
|
1462 prev->upstream.pass_request_body, 1);
|
|
1463
|
|
1464 ngx_conf_merge_msec_value(conf->upstream.redirect_errors,
|
|
1465 prev->upstream.redirect_errors, 0);
|
|
1466
|
|
1467 ngx_conf_merge_msec_value(conf->upstream.pass_x_powered_by,
|
|
1468 prev->upstream.pass_x_powered_by, 1);
|
|
1469 ngx_conf_merge_msec_value(conf->upstream.pass_server,
|
|
1470 prev->upstream.pass_server, 0);
|
|
1471 ngx_conf_merge_msec_value(conf->upstream.pass_x_accel_expires,
|
|
1472 prev->upstream.pass_x_accel_expires, 0);
|
|
1473
|
|
1474
|
|
1475 ngx_conf_merge_value(conf->redirect, prev->redirect, 1);
|
|
1476
|
|
1477 if (conf->redirect) {
|
|
1478
|
|
1479 if (conf->redirects == NULL) {
|
|
1480 conf->redirects = prev->redirects;
|
|
1481 }
|
|
1482
|
|
1483 if (conf->redirects == NULL && conf->upstream.url.data) {
|
|
1484
|
|
1485 conf->redirects = ngx_array_create(cf->pool, 1,
|
|
1486 sizeof(ngx_http_proxy_redirect_t));
|
|
1487 if (conf->redirects == NULL) {
|
|
1488 return NGX_CONF_ERROR;
|
|
1489 }
|
|
1490
|
|
1491 pr = ngx_array_push(conf->redirects);
|
|
1492 if (pr == NULL) {
|
|
1493 return NGX_CONF_ERROR;
|
|
1494 }
|
|
1495
|
|
1496 pr->handler = ngx_http_proxy_rewrite_redirect_text;
|
|
1497 pr->redirect = conf->upstream.url;
|
|
1498 pr->replacement.text = *conf->upstream.location;
|
|
1499 }
|
|
1500 }
|
|
1501
|
|
1502
|
|
1503 if (conf->peers == NULL) {
|
|
1504 conf->peers = prev->peers;
|
|
1505 conf->upstream = prev->upstream;
|
|
1506 }
|
|
1507
|
|
1508 if (conf->headers_source == NULL) {
|
|
1509 conf->headers_source = prev->headers_source;
|
|
1510 conf->headers_set_len = prev->headers_set_len;
|
|
1511 conf->headers_set = prev->headers_set;
|
|
1512 conf->headers_set_hash = prev->headers_set_hash;
|
|
1513 }
|
|
1514
|
|
1515 if (conf->headers_set_hash) {
|
|
1516 return NGX_CONF_OK;
|
|
1517 }
|
|
1518
|
|
1519
|
|
1520 conf->headers_names = ngx_array_create(cf->pool, 4, sizeof(ngx_str_t));
|
|
1521 if (conf->headers_names == NULL) {
|
|
1522 return NGX_CONF_ERROR;
|
|
1523 }
|
|
1524
|
|
1525 if (conf->headers_source == NULL) {
|
|
1526 conf->headers_source = ngx_array_create(cf->pool, 4,
|
|
1527 sizeof(ngx_table_elt_t));
|
|
1528 if (conf->headers_source == NULL) {
|
|
1529 return NGX_CONF_ERROR;
|
|
1530 }
|
|
1531 }
|
|
1532
|
|
1533 conf->headers_set_len = ngx_array_create(cf->pool, 64, 1);
|
|
1534 if (conf->headers_set_len == NULL) {
|
|
1535 return NGX_CONF_ERROR;
|
|
1536 }
|
|
1537
|
|
1538 conf->headers_set = ngx_array_create(cf->pool, 512, 1);
|
|
1539 if (conf->headers_set == NULL) {
|
|
1540 return NGX_CONF_ERROR;
|
|
1541 }
|
|
1542
|
|
1543
|
|
1544 src = conf->headers_source->elts;
|
|
1545
|
|
1546 for (h = ngx_http_proxy_headers; h->key.len; h++) {
|
|
1547
|
|
1548 for (i = 0; i < conf->headers_source->nelts; i++) {
|
|
1549 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) {
|
|
1550 goto next;
|
|
1551 }
|
|
1552 }
|
|
1553
|
|
1554 s = ngx_array_push(conf->headers_source);
|
|
1555 if (s == NULL) {
|
|
1556 return NGX_CONF_ERROR;
|
|
1557 }
|
|
1558
|
|
1559 *s = *h;
|
|
1560
|
|
1561 next:
|
|
1562
|
|
1563 continue;
|
|
1564 }
|
|
1565
|
|
1566 for (i = 0; i < conf->headers_source->nelts; i++) {
|
|
1567
|
|
1568 name = ngx_array_push(conf->headers_names);
|
|
1569 if (name == NULL) {
|
|
1570 return NGX_CONF_ERROR;
|
|
1571 }
|
|
1572
|
|
1573 *name = src[i].key;
|
|
1574
|
|
1575 if (ngx_http_script_variables_count(&src[i].value) == 0) {
|
|
1576 copy = ngx_array_push_n(conf->headers_set_len,
|
|
1577 sizeof(ngx_http_script_copy_code_t));
|
|
1578 if (copy == NULL) {
|
|
1579 return NGX_CONF_ERROR;
|
|
1580 }
|
|
1581
|
|
1582 copy->code = (ngx_http_script_code_pt)
|
|
1583 ngx_http_script_copy_len_code;
|
|
1584 copy->len = src[i].key.len + sizeof(": ") - 1
|
|
1585 + src[i].value.len + sizeof(CRLF) - 1;
|
|
1586
|
|
1587
|
|
1588 size = (sizeof(ngx_http_script_copy_code_t)
|
|
1589 + src[i].key.len + sizeof(": ") - 1
|
|
1590 + src[i].value.len + sizeof(CRLF) - 1
|
|
1591 + sizeof(uintptr_t) - 1)
|
|
1592 & ~(sizeof(uintptr_t) - 1);
|
|
1593
|
|
1594 copy = ngx_array_push_n(conf->headers_set, size);
|
|
1595 if (copy == NULL) {
|
|
1596 return NGX_CONF_ERROR;
|
|
1597 }
|
|
1598
|
|
1599 copy->code = ngx_http_script_copy_code;
|
|
1600 copy->len = src[i].key.len + sizeof(": ") - 1
|
|
1601 + src[i].value.len + sizeof(CRLF) - 1;
|
|
1602
|
|
1603 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
|
|
1604
|
|
1605 p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
|
|
1606 *p++ = ':'; *p++ = ' ';
|
|
1607 p = ngx_cpymem(p, src[i].value.data, src[i].value.len);
|
|
1608 *p++ = CR; *p = LF;
|
|
1609
|
|
1610 } else {
|
|
1611 copy = ngx_array_push_n(conf->headers_set_len,
|
|
1612 sizeof(ngx_http_script_copy_code_t));
|
|
1613 if (copy == NULL) {
|
|
1614 return NGX_CONF_ERROR;
|
|
1615 }
|
|
1616
|
|
1617 copy->code = (ngx_http_script_code_pt)
|
|
1618 ngx_http_script_copy_len_code;
|
|
1619 copy->len = src[i].key.len + sizeof(": ") - 1;
|
|
1620
|
|
1621
|
|
1622 size = (sizeof(ngx_http_script_copy_code_t)
|
|
1623 + src[i].key.len + sizeof(": ") - 1 + sizeof(uintptr_t) - 1)
|
|
1624 & ~(sizeof(uintptr_t) - 1);
|
|
1625
|
|
1626 copy = ngx_array_push_n(conf->headers_set, size);
|
|
1627 if (copy == NULL) {
|
|
1628 return NGX_CONF_ERROR;
|
|
1629 }
|
|
1630
|
|
1631 copy->code = ngx_http_script_copy_code;
|
|
1632 copy->len = src[i].key.len + sizeof(": ") - 1;
|
|
1633
|
|
1634 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
|
|
1635 p = ngx_cpymem(p, src[i].key.data, src[i].key.len);
|
|
1636 *p++ = ':'; *p = ' ';
|
|
1637
|
|
1638
|
|
1639 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
1640
|
|
1641 sc.cf = cf;
|
|
1642 sc.source = &src[i].value;
|
|
1643 sc.lengths = &conf->headers_set_len;
|
|
1644 sc.values = &conf->headers_set;
|
|
1645
|
|
1646 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
1647 return NGX_CONF_ERROR;
|
|
1648 }
|
|
1649
|
|
1650
|
|
1651 copy = ngx_array_push_n(conf->headers_set_len,
|
|
1652 sizeof(ngx_http_script_copy_code_t));
|
|
1653 if (copy == NULL) {
|
|
1654 return NGX_CONF_ERROR;
|
|
1655 }
|
|
1656
|
|
1657 copy->code = (ngx_http_script_code_pt)
|
|
1658 ngx_http_script_copy_len_code;
|
|
1659 copy->len = sizeof(CRLF) - 1;
|
|
1660
|
|
1661
|
|
1662 size = (sizeof(ngx_http_script_copy_code_t)
|
|
1663 + sizeof(CRLF) - 1 + sizeof(uintptr_t) - 1)
|
|
1664 & ~(sizeof(uintptr_t) - 1);
|
|
1665
|
|
1666 copy = ngx_array_push_n(conf->headers_set, size);
|
|
1667 if (copy == NULL) {
|
|
1668 return NGX_CONF_ERROR;
|
|
1669 }
|
|
1670
|
|
1671 copy->code = ngx_http_script_copy_code;
|
|
1672 copy->len = sizeof(CRLF) - 1;
|
|
1673
|
|
1674 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t);
|
|
1675 *p++ = CR; *p = LF;
|
|
1676 }
|
|
1677
|
|
1678 code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
|
|
1679 if (code == NULL) {
|
|
1680 return NGX_CONF_ERROR;
|
|
1681 }
|
|
1682
|
|
1683 *code = (uintptr_t) NULL;
|
|
1684
|
|
1685 code = ngx_array_push_n(conf->headers_set, sizeof(uintptr_t));
|
|
1686 if (code == NULL) {
|
|
1687 return NGX_CONF_ERROR;
|
|
1688 }
|
|
1689
|
|
1690 *code = (uintptr_t) NULL;
|
|
1691 }
|
|
1692
|
|
1693 code = ngx_array_push_n(conf->headers_set_len, sizeof(uintptr_t));
|
|
1694 if (code == NULL) {
|
|
1695 return NGX_CONF_ERROR;
|
|
1696 }
|
|
1697
|
|
1698 *code = (uintptr_t) NULL;
|
|
1699
|
|
1700
|
|
1701 conf->headers_set_hash = ngx_pcalloc(cf->pool, sizeof(ngx_hash_t));
|
|
1702 if (conf->headers_set_hash == NULL) {
|
|
1703 return NGX_CONF_ERROR;
|
|
1704 }
|
|
1705
|
|
1706 conf->headers_set_hash->max_size = 100;
|
|
1707 conf->headers_set_hash->bucket_limit = 1;
|
|
1708 conf->headers_set_hash->bucket_size = sizeof(ngx_str_t);
|
|
1709 conf->headers_set_hash->name = "proxy_headers";
|
|
1710
|
|
1711 if (ngx_hash_init(conf->headers_set_hash, cf->pool,
|
|
1712 conf->headers_names->elts, conf->headers_names->nelts) != NGX_OK)
|
|
1713 {
|
|
1714 return NGX_CONF_ERROR;
|
|
1715 }
|
|
1716
|
|
1717 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
1718 "proxy_headers hash size: %ui, "
|
|
1719 "max buckets per entry: %ui",
|
|
1720 conf->headers_set_hash->hash_size,
|
|
1721 conf->headers_set_hash->min_buckets);
|
|
1722
|
|
1723 return NGX_CONF_OK;
|
|
1724 }
|
|
1725
|
|
1726
|
|
1727 static char *
|
|
1728 ngx_http_proxy_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
1729 {
|
|
1730 ngx_http_proxy_loc_conf_t *plcf = conf;
|
|
1731
|
|
1732 ngx_uint_t i;
|
|
1733 ngx_str_t *value, *url;
|
|
1734 ngx_inet_upstream_t inet_upstream;
|
|
1735 ngx_http_core_loc_conf_t *clcf;
|
|
1736 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
1737 ngx_unix_domain_upstream_t unix_upstream;
|
|
1738 #endif
|
|
1739
|
|
1740 value = cf->args->elts;
|
|
1741
|
|
1742 url = &value[1];
|
|
1743
|
|
1744 if (ngx_strncasecmp(url->data, "http://", 7) != 0) {
|
|
1745 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid URL prefix");
|
|
1746 return NGX_CONF_ERROR;
|
|
1747 }
|
|
1748
|
|
1749 if (ngx_strncasecmp(url->data + 7, "unix:", 5) == 0) {
|
|
1750
|
|
1751 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
1752
|
|
1753 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
1754
|
|
1755 unix_upstream.name = *url;
|
|
1756 unix_upstream.url.len = url->len - 7;
|
|
1757 unix_upstream.url.data = url->data + 7;
|
|
1758 unix_upstream.uri_part = 1;
|
|
1759
|
|
1760 plcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
|
|
1761 if (plcf->peers == NULL) {
|
|
1762 return NGX_CONF_ERROR;
|
|
1763 }
|
|
1764
|
|
1765 plcf->peers->peer[0].uri_separator = ":";
|
|
1766
|
|
1767 plcf->host_header.len = sizeof("localhost") - 1;
|
|
1768 plcf->host_header.data = (u_char *) "localhost";
|
|
1769 plcf->upstream.uri = unix_upstream.uri;
|
|
1770
|
|
1771 #else
|
|
1772 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1773 "the unix domain sockets are not supported "
|
|
1774 "on this platform");
|
|
1775 return NGX_CONF_ERROR;
|
|
1776
|
|
1777 #endif
|
|
1778
|
|
1779 } else {
|
|
1780 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
1781
|
|
1782 inet_upstream.name = *url;
|
|
1783 inet_upstream.url.len = url->len - 7;
|
|
1784 inet_upstream.url.data = url->data + 7;
|
|
1785 inet_upstream.default_port_value = 80;
|
|
1786 inet_upstream.uri_part = 1;
|
|
1787
|
|
1788 plcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
|
|
1789 if (plcf->peers == NULL) {
|
|
1790 return NGX_CONF_ERROR;
|
|
1791 }
|
|
1792
|
|
1793 for (i = 0; i < plcf->peers->number; i++) {
|
|
1794 plcf->peers->peer[i].uri_separator = ":";
|
|
1795 }
|
|
1796
|
|
1797 plcf->host_header = inet_upstream.host_header;
|
|
1798 plcf->port_text = inet_upstream.port_text;
|
|
1799 plcf->upstream.uri = inet_upstream.uri;
|
|
1800 }
|
|
1801
|
|
1802 plcf->upstream.schema.len = sizeof("http://") - 1;
|
|
1803 plcf->upstream.schema.data = (u_char *) "http://";
|
|
1804
|
|
1805 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
1806
|
|
1807 clcf->handler = ngx_http_proxy_handler;
|
|
1808
|
|
1809 #if (NGX_PCRE)
|
|
1810 plcf->upstream.location = clcf->regex ? &ngx_http_proxy_uri : &clcf->name;
|
|
1811 #else
|
|
1812 plcf->upstream.location = &clcf->name;
|
|
1813 #endif
|
|
1814
|
|
1815 plcf->upstream.url = *url;
|
|
1816
|
|
1817 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
1818 clcf->auto_redirect = 1;
|
|
1819 }
|
|
1820
|
|
1821 return NGX_CONF_OK;
|
|
1822 }
|
|
1823
|
|
1824
|
|
1825 static char *
|
|
1826 ngx_http_proxy_redirect(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
1827 {
|
|
1828 ngx_http_proxy_loc_conf_t *plcf = conf;
|
|
1829
|
|
1830 ngx_str_t *value;
|
|
1831 ngx_array_t *vars_lengths, *vars_values;
|
|
1832 ngx_http_script_compile_t sc;
|
|
1833 ngx_http_proxy_redirect_t *pr;
|
|
1834
|
|
1835 if (plcf->redirect == 0) {
|
|
1836 return NGX_CONF_OK;
|
|
1837 }
|
|
1838
|
|
1839 value = cf->args->elts;
|
|
1840
|
|
1841 if (ngx_strcmp(value[1].data, "off") == 0) {
|
|
1842 plcf->redirect = 0;
|
|
1843 plcf->redirects = NULL;
|
|
1844 return NGX_CONF_OK;
|
|
1845 }
|
|
1846
|
|
1847 if (plcf->redirects == NULL) {
|
|
1848 plcf->redirects = ngx_array_create(cf->pool, 1,
|
|
1849 sizeof(ngx_http_proxy_redirect_t));
|
|
1850 if (plcf->redirects == NULL) {
|
|
1851 return NGX_CONF_ERROR;
|
|
1852 }
|
|
1853 }
|
|
1854
|
|
1855 pr = ngx_array_push(plcf->redirects);
|
|
1856 if (pr == NULL) {
|
|
1857 return NGX_CONF_ERROR;
|
|
1858 }
|
|
1859
|
|
1860 if (cf->args->nelts == 2 && ngx_strcmp(value[1].data, "default") == 0) {
|
|
1861 if (plcf->upstream.url.data == NULL) {
|
|
1862 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1863 "\"proxy_rewrite_location default\" must go "
|
|
1864 "after the \"proxy_pass\" directive");
|
|
1865 return NGX_CONF_ERROR;
|
|
1866 }
|
|
1867
|
|
1868 pr->handler = ngx_http_proxy_rewrite_redirect_text;
|
|
1869 pr->redirect = plcf->upstream.url;
|
|
1870 pr->replacement.text = *plcf->upstream.location;
|
|
1871
|
|
1872 return NGX_CONF_OK;
|
|
1873 }
|
|
1874
|
|
1875 if (ngx_http_script_variables_count(&value[2]) == 0) {
|
|
1876 pr->handler = ngx_http_proxy_rewrite_redirect_text;
|
|
1877 pr->redirect = value[1];
|
|
1878 pr->replacement.text = value[2];
|
|
1879
|
|
1880 return NGX_CONF_OK;
|
|
1881 }
|
|
1882
|
|
1883 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
|
|
1884
|
|
1885 vars_lengths = NULL;
|
|
1886 vars_values = NULL;
|
|
1887
|
|
1888 sc.cf = cf;
|
|
1889 sc.source = &value[2];
|
|
1890 sc.lengths = &vars_lengths;
|
|
1891 sc.values = &vars_values;
|
|
1892 sc.complete_lengths = 1;
|
|
1893 sc.complete_values = 1;
|
|
1894
|
|
1895 if (ngx_http_script_compile(&sc) != NGX_OK) {
|
|
1896 return NGX_CONF_ERROR;
|
|
1897 }
|
|
1898
|
|
1899 pr->handler = ngx_http_proxy_rewrite_redirect_vars;
|
|
1900 pr->redirect = value[1];
|
|
1901 pr->replacement.vars.lengths = vars_lengths->elts;
|
|
1902 pr->replacement.vars.values = vars_values->elts;
|
|
1903
|
|
1904 return NGX_CONF_OK;
|
|
1905 }
|
|
1906
|
|
1907
|
|
1908 static char *
|
|
1909 ngx_http_proxy_lowat_check(ngx_conf_t *cf, void *post, void *data)
|
|
1910 {
|
|
1911 #if (NGX_FREEBSD)
|
|
1912 ssize_t *np = data;
|
|
1913
|
|
1914 if (*np >= ngx_freebsd_net_inet_tcp_sendspace) {
|
|
1915 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1916 "\"proxy_send_lowat\" must be less than %d "
|
|
1917 "(sysctl net.inet.tcp.sendspace)",
|
|
1918 ngx_freebsd_net_inet_tcp_sendspace);
|
|
1919
|
|
1920 return NGX_CONF_ERROR;
|
|
1921 }
|
|
1922
|
|
1923 #elif !(NGX_HAVE_SO_SNDLOWAT)
|
|
1924 ssize_t *np = data;
|
|
1925
|
|
1926 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
1927 "\"proxy_send_lowat\" is not supported, ignored");
|
|
1928
|
|
1929 *np = 0;
|
|
1930
|
|
1931 #endif
|
|
1932
|
|
1933 return NGX_CONF_OK;
|
|
1934 }
|