Mercurial > hg > nginx

annotate src/http/ngx_http_postpone_filter_module.c @ 6719:cebf5fed00bf

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Modules compatibility: removed unneeded IPV6_V6ONLY checks. The IPV6_V6ONLY macro is now checked only while parsing appropriate flag and when using the macro. The ipv6only field in listen structures is always initialized to 1, even if not supported on a given platform. This is expected to prevent a module compiled without IPV6_V6ONLY from accidentally creating dual sockets if loaded into main binary with proper IPV6_V6ONLY support.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 03 Oct 2016 15:58:25 +0300
parents f026adb935ad
children d87f29d764ce
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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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_http.h>
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11
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12
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13 static ngx_int_t ngx_http_postpone_filter_add(ngx_http_request_t *r,
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14 ngx_chain_t *in);
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15 static ngx_int_t ngx_http_postpone_filter_init(ngx_conf_t *cf);
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17
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18 static ngx_http_module_t ngx_http_postpone_filter_module_ctx = {
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19 NULL, /* preconfiguration */
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20 ngx_http_postpone_filter_init, /* postconfiguration */
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21
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22 NULL, /* create main configuration */
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23 NULL, /* init main configuration */
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24
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25 NULL, /* create server configuration */
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26 NULL, /* merge server configuration */
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27
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28 NULL, /* create location configuration */
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29 NULL /* merge location configuration */
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30 };
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32
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33 ngx_module_t ngx_http_postpone_filter_module = {
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34 NGX_MODULE_V1,
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35 &ngx_http_postpone_filter_module_ctx, /* module context */
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36 NULL, /* module directives */
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37 NGX_HTTP_MODULE, /* module type */
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38 NULL, /* init master */
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39 NULL, /* init module */
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40 NULL, /* init process */
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41 NULL, /* init thread */
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42 NULL, /* exit thread */
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43 NULL, /* exit process */
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44 NULL, /* exit master */
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45 NGX_MODULE_V1_PADDING
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46 };
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47
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48
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49 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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51
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52 static ngx_int_t
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53 ngx_http_postpone_filter(ngx_http_request_t *r, ngx_chain_t *in)
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54 {
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55 ngx_connection_t *c;
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56 ngx_http_postponed_request_t *pr;
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57
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58 c = r->connection;
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59
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60 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
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61 "http postpone filter \"%V?%V\" %p", &r->uri, &r->args, in);
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62
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63 if (r != c->data) {
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64
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65 if (in) {
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66 ngx_http_postpone_filter_add(r, in);
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67 return NGX_OK;
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68 }
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69
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70 #if 0
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71 /* TODO: SSI may pass NULL */
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72 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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73 "http postpone filter NULL inactive request");
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74 #endif
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75
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76 return NGX_OK;
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77 }
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78
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79 if (r->postponed == NULL) {
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80
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81 if (in || c->buffered) {
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82 return ngx_http_next_body_filter(r->main, in);
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83 }
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84
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85 return NGX_OK;
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86 }
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87
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88 if (in) {
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89 ngx_http_postpone_filter_add(r, in);
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90 }
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91
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92 do {
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93 pr = r->postponed;
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94
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95 if (pr->request) {
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96
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97 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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98 "http postpone filter wake \"%V?%V\"",
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99 &pr->request->uri, &pr->request->args);
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100
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101 r->postponed = pr->next;
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102
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103 c->data = pr->request;
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104
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105 return ngx_http_post_request(pr->request, NULL);
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106 }
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107
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108 if (pr->out == NULL) {
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109 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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110 "http postpone filter NULL output");
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111
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112 } else {
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113 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
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114 "http postpone filter output \"%V?%V\"",
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115 &r->uri, &r->args);
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116
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117 if (ngx_http_next_body_filter(r->main, pr->out) == NGX_ERROR) {
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118 return NGX_ERROR;
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119 }
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120 }
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121
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122 r->postponed = pr->next;
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123
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124 } while (r->postponed);
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125
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126 return NGX_OK;
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127 }
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128
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129
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130 static ngx_int_t
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131 ngx_http_postpone_filter_add(ngx_http_request_t *r, ngx_chain_t *in)
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132 {
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133 ngx_http_postponed_request_t *pr, **ppr;
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134
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135 if (r->postponed) {
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136 for (pr = r->postponed; pr->next; pr = pr->next) { /* void */ }
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137
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138 if (pr->request == NULL) {
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139 goto found;
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140 }
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141
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142 ppr = &pr->next;
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143
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144 } else {
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145 ppr = &r->postponed;
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146 }
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147
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148 pr = ngx_palloc(r->pool, sizeof(ngx_http_postponed_request_t));
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149 if (pr == NULL) {
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150 return NGX_ERROR;
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151 }
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152
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153 *ppr = pr;
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154
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155 pr->request = NULL;
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156 pr->out = NULL;
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157 pr->next = NULL;
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158
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159 found:
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160
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parents: 2295
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161 if (ngx_chain_add_copy(r->pool, &pr->out, in) == NGX_OK) {
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162 return NGX_OK;
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163 }
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164
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165 return NGX_ERROR;
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166 }
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167
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168
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169 static ngx_int_t
681
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Igor Sysoev <igor@sysoev.ru>
parents: 667
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170 ngx_http_postpone_filter_init(ngx_conf_t *cf)
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parents:
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171 {
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Ruslan Ermilov <ru@nginx.com>
parents: 4412
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172 ngx_http_next_body_filter = ngx_http_top_body_filter;
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parents:
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173 ngx_http_top_body_filter = ngx_http_postpone_filter;
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parents:
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174
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175 return NGX_OK;
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176 }