Mercurial > hg > nginx-quic
annotate src/http/ngx_http_postpone_filter_module.c @ 4818:28a64967e891
Removed a stale "AF_INET only" comment.
IPv6 client connections in mail modules have been supported since r2856.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Fri, 17 Aug 2012 05:14:19 +0000 |
parents | 586969d972b9 |
children | f026adb935ad |
rev | line source |
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509 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
509 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
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); |
681 | 15 static ngx_int_t ngx_http_postpone_filter_init(ngx_conf_t *cf); |
509 | 16 |
17 | |
18 static ngx_http_module_t ngx_http_postpone_filter_module_ctx = { | |
19 NULL, /* preconfiguration */ | |
681 | 20 ngx_http_postpone_filter_init, /* postconfiguration */ |
509 | 21 |
22 NULL, /* create main configuration */ | |
23 NULL, /* init main configuration */ | |
24 | |
25 NULL, /* create server configuration */ | |
26 NULL, /* merge server configuration */ | |
27 | |
28 NULL, /* create location configuration */ | |
29 NULL /* merge location configuration */ | |
30 }; | |
31 | |
32 | |
33 ngx_module_t ngx_http_postpone_filter_module = { | |
34 NGX_MODULE_V1, | |
35 &ngx_http_postpone_filter_module_ctx, /* module context */ | |
36 NULL, /* module directives */ | |
37 NGX_HTTP_MODULE, /* module type */ | |
541 | 38 NULL, /* init master */ |
681 | 39 NULL, /* init module */ |
541 | 40 NULL, /* init process */ |
41 NULL, /* init thread */ | |
42 NULL, /* exit thread */ | |
43 NULL, /* exit process */ | |
44 NULL, /* exit master */ | |
45 NGX_MODULE_V1_PADDING | |
509 | 46 }; |
47 | |
48 | |
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49 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
509 | 50 |
51 | |
52 static ngx_int_t | |
53 ngx_http_postpone_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
54 { | |
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55 ngx_connection_t *c; |
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56 ngx_http_postponed_request_t *pr; |
509 | 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, |
583 | 61 "http postpone filter \"%V?%V\" %p", &r->uri, &r->args, in); |
527 | 62 |
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63 if (r != c->data) { |
509 | 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; |
509 | 68 } |
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 &r->uri, &r->args); |
641 | 75 #endif |
76 | |
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77 return NGX_OK; |
583 | 78 } |
79 | |
80 if (r->postponed == NULL) { | |
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81 |
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82 if (in || c->buffered) { |
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83 return ngx_http_next_body_filter(r->main, in); |
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84 } |
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85 |
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86 return NGX_OK; |
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87 } |
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88 |
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89 if (in) { |
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90 ngx_http_postpone_filter_add(r, in); |
583 | 91 } |
92 | |
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93 do { |
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94 pr = r->postponed; |
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95 |
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96 if (pr->request) { |
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97 |
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98 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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99 "http postpone filter wake \"%V?%V\"", |
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100 &pr->request->uri, &pr->request->args); |
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101 |
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102 r->postponed = pr->next; |
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103 |
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104 c->data = pr->request; |
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105 |
3064 | 106 return ngx_http_post_request(pr->request, NULL); |
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107 } |
583 | 108 |
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109 if (pr->out == NULL) { |
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110 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
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111 "http postpone filter NULL output", |
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112 &r->uri, &r->args); |
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113 |
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114 } else { |
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115 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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116 "http postpone filter output \"%V?%V\"", |
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117 &r->uri, &r->args); |
509 | 118 |
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119 if (ngx_http_next_body_filter(r->main, pr->out) == NGX_ERROR) { |
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120 return NGX_ERROR; |
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121 } |
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122 } |
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123 |
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124 r->postponed = pr->next; |
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125 |
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126 } while (r->postponed); |
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127 |
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128 return NGX_OK; |
509 | 129 } |
130 | |
131 | |
132 static ngx_int_t | |
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133 ngx_http_postpone_filter_add(ngx_http_request_t *r, ngx_chain_t *in) |
583 | 134 { |
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135 ngx_http_postponed_request_t *pr, **ppr; |
583 | 136 |
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137 if (r->postponed) { |
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138 for (pr = r->postponed; pr->next; pr = pr->next) { /* void */ } |
583 | 139 |
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140 if (pr->request == NULL) { |
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141 goto found; |
583 | 142 } |
143 | |
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144 ppr = &pr->next; |
583 | 145 |
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146 } else { |
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147 ppr = &r->postponed; |
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148 } |
595 | 149 |
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150 pr = ngx_palloc(r->pool, sizeof(ngx_http_postponed_request_t)); |
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151 if (pr == NULL) { |
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152 return NGX_ERROR; |
583 | 153 } |
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154 |
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155 *ppr = pr; |
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156 |
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157 pr->request = NULL; |
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158 pr->out = NULL; |
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159 pr->next = NULL; |
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160 |
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161 found: |
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162 |
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163 if (ngx_chain_add_copy(r->pool, &pr->out, in) == NGX_OK) { |
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164 return NGX_OK; |
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165 } |
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166 |
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167 return NGX_ERROR; |
583 | 168 } |
169 | |
170 | |
171 static ngx_int_t | |
681 | 172 ngx_http_postpone_filter_init(ngx_conf_t *cf) |
509 | 173 { |
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174 ngx_http_next_body_filter = ngx_http_top_body_filter; |
509 | 175 ngx_http_top_body_filter = ngx_http_postpone_filter; |
176 | |
177 return NGX_OK; | |
178 } |