Mercurial > hg > nginx
annotate src/http/modules/ngx_http_range_filter_module.c @ 4055:9cce506be97d
Ranges processing small optimization.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 30 Aug 2011 12:45:24 +0000 |
parents | 20c7c73d3efa |
children | e9213133993a |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
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11 |
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12 /* |
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13 * the single part format: |
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14 * |
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15 * "HTTP/1.0 206 Partial Content" CRLF |
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16 * ... header ... |
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17 * "Content-Type: image/jpeg" CRLF |
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18 * "Content-Length: SIZE" CRLF |
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19 * "Content-Range: bytes START-END/SIZE" CRLF |
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20 * CRLF |
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21 * ... data ... |
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22 * |
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23 * |
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24 * the mutlipart format: |
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25 * |
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26 * "HTTP/1.0 206 Partial Content" CRLF |
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27 * ... header ... |
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28 * "Content-Type: multipart/byteranges; boundary=0123456789" CRLF |
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29 * CRLF |
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30 * CRLF |
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31 * "--0123456789" CRLF |
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32 * "Content-Type: image/jpeg" CRLF |
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33 * "Content-Range: bytes START0-END0/SIZE" CRLF |
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34 * CRLF |
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35 * ... data ... |
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36 * CRLF |
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37 * "--0123456789" CRLF |
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38 * "Content-Type: image/jpeg" CRLF |
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39 * "Content-Range: bytes START1-END1/SIZE" CRLF |
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40 * CRLF |
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41 * ... data ... |
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42 * CRLF |
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43 * "--0123456789--" CRLF |
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44 */ |
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45 |
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46 |
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47 typedef struct { |
963
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48 off_t start; |
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49 off_t end; |
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50 ngx_str_t content_range; |
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51 } ngx_http_range_t; |
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52 |
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53 |
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54 typedef struct { |
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55 off_t offset; |
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56 ngx_str_t boundary_header; |
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57 ngx_array_t ranges; |
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58 } ngx_http_range_filter_ctx_t; |
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59 |
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60 |
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61 ngx_int_t ngx_http_range_parse(ngx_http_request_t *r, |
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62 ngx_http_range_filter_ctx_t *ctx); |
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63 static ngx_int_t ngx_http_range_singlepart_header(ngx_http_request_t *r, |
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64 ngx_http_range_filter_ctx_t *ctx); |
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65 static ngx_int_t ngx_http_range_multipart_header(ngx_http_request_t *r, |
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66 ngx_http_range_filter_ctx_t *ctx); |
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67 static ngx_int_t ngx_http_range_not_satisfiable(ngx_http_request_t *r); |
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68 static ngx_int_t ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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69 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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70 static ngx_int_t ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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71 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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72 static ngx_int_t ngx_http_range_multipart_body(ngx_http_request_t *r, |
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73 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in); |
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74 |
681 | 75 static ngx_int_t ngx_http_range_header_filter_init(ngx_conf_t *cf); |
76 static ngx_int_t ngx_http_range_body_filter_init(ngx_conf_t *cf); | |
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77 |
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78 |
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79 static ngx_http_module_t ngx_http_range_header_filter_module_ctx = { |
509 | 80 NULL, /* preconfiguration */ |
681 | 81 ngx_http_range_header_filter_init, /* postconfiguration */ |
177
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82 |
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83 NULL, /* create main configuration */ |
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84 NULL, /* init main configuration */ |
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85 |
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86 NULL, /* create server configuration */ |
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87 NULL, /* merge server configuration */ |
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88 |
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89 NULL, /* create location configuration */ |
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90 NULL, /* merge location configuration */ |
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91 }; |
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92 |
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93 |
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94 ngx_module_t ngx_http_range_header_filter_module = { |
509 | 95 NGX_MODULE_V1, |
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96 &ngx_http_range_header_filter_module_ctx, /* module context */ |
99
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97 NULL, /* module directives */ |
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98 NGX_HTTP_MODULE, /* module type */ |
541 | 99 NULL, /* init master */ |
681 | 100 NULL, /* init module */ |
541 | 101 NULL, /* init process */ |
102 NULL, /* init thread */ | |
103 NULL, /* exit thread */ | |
104 NULL, /* exit process */ | |
105 NULL, /* exit master */ | |
106 NGX_MODULE_V1_PADDING | |
334
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107 }; |
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108 |
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109 |
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110 static ngx_http_module_t ngx_http_range_body_filter_module_ctx = { |
509 | 111 NULL, /* preconfiguration */ |
681 | 112 ngx_http_range_body_filter_init, /* postconfiguration */ |
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113 |
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114 NULL, /* create main configuration */ |
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115 NULL, /* init main configuration */ |
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116 |
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117 NULL, /* create server configuration */ |
af451db3fe99
nginx-0.0.3-2004-05-12-09:37:55 import
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314
diff
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118 NULL, /* merge server configuration */ |
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314
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119 |
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314
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|
120 NULL, /* create location configuration */ |
af451db3fe99
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314
diff
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|
121 NULL, /* merge location configuration */ |
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314
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122 }; |
af451db3fe99
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314
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123 |
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124 |
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125 ngx_module_t ngx_http_range_body_filter_module = { |
509 | 126 NGX_MODULE_V1, |
334
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127 &ngx_http_range_body_filter_module_ctx, /* module context */ |
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128 NULL, /* module directives */ |
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129 NGX_HTTP_MODULE, /* module type */ |
541 | 130 NULL, /* init master */ |
681 | 131 NULL, /* init module */ |
541 | 132 NULL, /* init process */ |
133 NULL, /* init thread */ | |
134 NULL, /* exit thread */ | |
135 NULL, /* exit process */ | |
136 NULL, /* exit master */ | |
137 NGX_MODULE_V1_PADDING | |
99
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138 }; |
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139 |
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parents:
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140 |
155
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nginx-0.0.1-2003-10-22-20:38:26 import
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153
diff
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|
141 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
46eb23d9471d
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153
diff
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142 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
99
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parents:
diff
changeset
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143 |
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144 |
493 | 145 static ngx_int_t |
146 ngx_http_range_header_filter(ngx_http_request_t *r) | |
99
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147 { |
1630 | 148 time_t if_range; |
99
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149 ngx_http_range_filter_ctx_t *ctx; |
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150 |
160
e7e094d34162
nginx-0.0.1-2003-10-27-11:53:49 import
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155
diff
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|
151 if (r->http_version < NGX_HTTP_VERSION_10 |
99
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152 || r->headers_out.status != NGX_HTTP_OK |
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153 || r != r->main |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
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136
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154 || r->headers_out.content_length_n == -1 |
581 | 155 || !r->allow_ranges) |
117
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parents:
113
diff
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|
156 { |
155
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157 return ngx_http_next_header_filter(r); |
117
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113
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158 } |
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113
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|
159 |
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113
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|
160 if (r->headers_in.range == NULL |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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|
161 || r->headers_in.range->value.len < 7 |
1107
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ngx_strcasecmp()/ngx_strncasecmp()
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162 || ngx_strncasecmp(r->headers_in.range->value.data, |
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ngx_strcasecmp()/ngx_strncasecmp()
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diff
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|
163 (u_char *) "bytes=", 6) |
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|
164 != 0) |
99
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diff
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|
165 { |
1630 | 166 goto next_filter; |
167 } | |
168 | |
169 if (r->headers_in.if_range && r->headers_out.last_modified_time != -1) { | |
170 | |
171 if_range = ngx_http_parse_time(r->headers_in.if_range->value.data, | |
172 r->headers_in.if_range->value.len); | |
117
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|
173 |
1630 | 174 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
175 "http ir:%d lm:%d", | |
176 if_range, r->headers_out.last_modified_time); | |
117
f6e3c5d019b6
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parents:
113
diff
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|
177 |
1630 | 178 if (if_range != r->headers_out.last_modified_time) { |
179 goto next_filter; | |
180 } | |
99
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181 } |
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|
182 |
963
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|
183 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t)); |
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|
184 if (ctx == NULL) { |
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185 return NGX_ERROR; |
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|
186 } |
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|
187 |
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|
188 if (ngx_array_init(&ctx->ranges, r->pool, 1, sizeof(ngx_http_range_t)) |
2536
a6d6d762c554
small optimization: " == NGX_ERROR" > " != NGX_OK"
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2269
diff
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|
189 != NGX_OK) |
461 | 190 { |
191 return NGX_ERROR; | |
192 } | |
99
a059e1aa65d4
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193 |
4035
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Now if total size of all ranges is greater than source response size,
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diff
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|
194 switch (ngx_http_range_parse(r, ctx)) { |
2118
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195 |
4035
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Now if total size of all ranges is greater than source response size,
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|
196 case NGX_OK: |
2118
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|
197 ngx_http_set_ctx(r, ctx, ngx_http_range_body_filter_module); |
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198 |
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199 r->headers_out.status = NGX_HTTP_PARTIAL_CONTENT; |
2592
3a8a53c0c42f
a prelimiary proxy cache support
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diff
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|
200 r->headers_out.status_line.len = 0; |
2118
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|
201 |
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|
202 if (ctx->ranges.nelts == 1) { |
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203 return ngx_http_range_singlepart_header(r, ctx); |
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|
204 } |
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|
205 |
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|
206 return ngx_http_range_multipart_header(r, ctx); |
4035
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Now if total size of all ranges is greater than source response size,
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|
207 |
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Now if total size of all ranges is greater than source response size,
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|
208 case NGX_HTTP_RANGE_NOT_SATISFIABLE: |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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diff
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|
209 return ngx_http_range_not_satisfiable(r); |
2118
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210 |
4035
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Now if total size of all ranges is greater than source response size,
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changeset
|
211 case NGX_ERROR: |
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|
212 return NGX_ERROR; |
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Now if total size of all ranges is greater than source response size,
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|
213 |
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Now if total size of all ranges is greater than source response size,
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changeset
|
214 default: /* NGX_DECLINED */ |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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|
215 break; |
2118
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|
216 } |
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changeset
|
217 |
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|
218 next_filter: |
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|
219 |
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|
220 r->headers_out.accept_ranges = ngx_list_push(&r->headers_out.headers); |
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|
221 if (r->headers_out.accept_ranges == NULL) { |
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|
222 return NGX_ERROR; |
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|
223 } |
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diff
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|
224 |
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|
225 r->headers_out.accept_ranges->hash = 1; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
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3331
diff
changeset
|
226 ngx_str_set(&r->headers_out.accept_ranges->key, "Accept-Ranges"); |
dd1570b6f237
ngx_str_set() and ngx_str_null()
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diff
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|
227 ngx_str_set(&r->headers_out.accept_ranges->value, "bytes"); |
2118
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|
228 |
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229 return ngx_http_next_header_filter(r); |
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|
230 } |
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changeset
|
231 |
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diff
changeset
|
232 |
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|
233 ngx_int_t |
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diff
changeset
|
234 ngx_http_range_parse(ngx_http_request_t *r, ngx_http_range_filter_ctx_t *ctx) |
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|
235 { |
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changeset
|
236 u_char *p; |
4035
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Now if total size of all ranges is greater than source response size,
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changeset
|
237 off_t start, end, size; |
2118
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|
238 ngx_uint_t suffix; |
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changeset
|
239 ngx_http_range_t *range; |
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changeset
|
240 |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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diff
changeset
|
241 p = r->headers_in.range->value.data + 6; |
4035
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Now if total size of all ranges is greater than source response size,
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changeset
|
242 size = 0; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
243 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
244 for ( ;; ) { |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
245 start = 0; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
246 end = 0; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
247 suffix = 0; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
248 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
249 while (*p == ' ') { p++; } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
250 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
251 if (*p != '-') { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
252 if (*p < '0' || *p > '9') { |
2118
c1f589732d8c
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253 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
254 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
255 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
256 while (*p >= '0' && *p <= '9') { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
257 start = start * 10 + *p++ - '0'; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
258 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
259 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
260 while (*p == ' ') { p++; } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
261 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
262 if (*p++ != '-') { |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
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|
263 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
264 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
265 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
266 if (start >= r->headers_out.content_length_n) { |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
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|
267 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
268 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
269 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
270 while (*p == ' ') { p++; } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
271 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
272 if (*p == ',' || *p == '\0') { |
4055
9cce506be97d
Ranges processing small optimization.
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diff
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273 end = r->headers_out.content_length_n; |
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Ranges processing small optimization.
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diff
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274 goto found; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
275 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
276 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
277 } else { |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
278 suffix = 1; |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
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parents:
195
diff
changeset
|
279 p++; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
280 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
281 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
282 if (*p < '0' || *p > '9') { |
2118
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split ngx_http_range_filter_module
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diff
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|
283 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
284 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
285 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 while (*p >= '0' && *p <= '9') { |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
287 end = end * 10 + *p++ - '0'; |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
288 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
289 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
290 while (*p == ' ') { p++; } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
291 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
292 if (*p != ',' && *p != '\0') { |
2118
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|
293 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
294 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
295 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
296 if (suffix) { |
4054 | 297 start = r->headers_out.content_length_n - end; |
298 end = r->headers_out.content_length_n - 1; | |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
299 } |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
300 |
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
301 if (start > end) { |
2118
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parents:
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diff
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|
302 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
303 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
304 |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
305 if (end >= r->headers_out.content_length_n) { |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
306 /* |
9cce506be97d
Ranges processing small optimization.
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parents:
4054
diff
changeset
|
307 * Download Accelerator sends the last byte position |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
308 * that equals to the file length |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
309 */ |
9cce506be97d
Ranges processing small optimization.
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parents:
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diff
changeset
|
310 end = r->headers_out.content_length_n; |
9cce506be97d
Ranges processing small optimization.
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parents:
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diff
changeset
|
311 |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
312 } else { |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
313 end++; |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
314 } |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
315 |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
316 found: |
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
317 |
963
78e70dae89f0
move ranges array to ngx_http_range_filter_ctx_t
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parents:
962
diff
changeset
|
318 range = ngx_array_push(&ctx->ranges); |
501 | 319 if (range == NULL) { |
461 | 320 return NGX_ERROR; |
321 } | |
322 | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
323 range->start = start; |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
324 range->end = end; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
325 |
4055
9cce506be97d
Ranges processing small optimization.
Igor Sysoev <igor@sysoev.ru>
parents:
4054
diff
changeset
|
326 size += end - start; |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
327 |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
328 if (*p++ != ',') { |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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parents:
3516
diff
changeset
|
329 break; |
231
92db0aa1e83f
nginx-0.0.1-2004-01-16-21:29:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
330 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
331 } |
4035
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
332 |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
333 if (size > r->headers_out.content_length_n) { |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
Igor Sysoev <igor@sysoev.ru>
parents:
3516
diff
changeset
|
334 return NGX_DECLINED; |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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parents:
3516
diff
changeset
|
335 } |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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parents:
3516
diff
changeset
|
336 |
c2a91088b0c0
Now if total size of all ranges is greater than source response size,
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parents:
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diff
changeset
|
337 return NGX_OK; |
2118
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
338 } |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
339 |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
340 |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
341 static ngx_int_t |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
342 ngx_http_range_singlepart_header(ngx_http_request_t *r, |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
343 ngx_http_range_filter_ctx_t *ctx) |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
344 { |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
345 ngx_table_elt_t *content_range; |
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parents:
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diff
changeset
|
346 ngx_http_range_t *range; |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
347 |
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parents:
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diff
changeset
|
348 content_range = ngx_list_push(&r->headers_out.headers); |
c1f589732d8c
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parents:
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diff
changeset
|
349 if (content_range == NULL) { |
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diff
changeset
|
350 return NGX_ERROR; |
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
351 } |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
352 |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
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diff
changeset
|
353 r->headers_out.content_range = content_range; |
461 | 354 |
2118
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split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
355 content_range->hash = 1; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3331
diff
changeset
|
356 ngx_str_set(&content_range->key, "Content-Range"); |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
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parents:
diff
changeset
|
357 |
2118
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split ngx_http_range_filter_module
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parents:
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diff
changeset
|
358 content_range->value.data = ngx_pnalloc(r->pool, |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
359 sizeof("bytes -/") - 1 + 3 * NGX_OFF_T_LEN); |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
360 if (content_range->value.data == NULL) { |
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
361 return NGX_ERROR; |
461 | 362 } |
363 | |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
364 /* "Content-Range: bytes SSSS-EEEE/TTTT" header */ |
461 | 365 |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
366 range = ctx->ranges.elts; |
461 | 367 |
2118
c1f589732d8c
split ngx_http_range_filter_module
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parents:
2049
diff
changeset
|
368 content_range->value.len = ngx_sprintf(content_range->value.data, |
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369 "bytes %O-%O/%O", |
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370 range->start, range->end - 1, |
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371 r->headers_out.content_length_n) |
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372 - content_range->value.data; |
461 | 373 |
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374 r->headers_out.content_length_n = range->end - range->start; |
461 | 375 |
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376 if (r->headers_out.content_length) { |
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377 r->headers_out.content_length->hash = 0; |
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378 r->headers_out.content_length = NULL; |
461 | 379 } |
380 | |
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381 return ngx_http_next_header_filter(r); |
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382 } |
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383 |
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384 |
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385 static ngx_int_t |
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386 ngx_http_range_multipart_header(ngx_http_request_t *r, |
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387 ngx_http_range_filter_ctx_t *ctx) |
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388 { |
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389 size_t len; |
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390 ngx_uint_t i; |
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391 ngx_http_range_t *range; |
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392 ngx_atomic_uint_t boundary; |
461 | 393 |
493 | 394 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
395 + sizeof(CRLF "Content-Type: ") - 1 | |
509 | 396 + r->headers_out.content_type.len |
461 | 397 + sizeof(CRLF "Content-Range: bytes ") - 1; |
398 | |
399 if (r->headers_out.charset.len) { | |
400 len += sizeof("; charset=") - 1 + r->headers_out.charset.len; | |
401 } | |
402 | |
2049 | 403 ctx->boundary_header.data = ngx_pnalloc(r->pool, len); |
501 | 404 if (ctx->boundary_header.data == NULL) { |
461 | 405 return NGX_ERROR; |
406 } | |
407 | |
493 | 408 boundary = ngx_next_temp_number(0); |
461 | 409 |
410 /* | |
411 * The boundary header of the range: | |
412 * CRLF | |
413 * "--0123456789" CRLF | |
414 * "Content-Type: image/jpeg" CRLF | |
415 * "Content-Range: bytes " | |
416 */ | |
417 | |
418 if (r->headers_out.charset.len) { | |
419 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, | |
493 | 420 CRLF "--%0muA" CRLF |
461 | 421 "Content-Type: %V; charset=%V" CRLF |
422 "Content-Range: bytes ", | |
423 boundary, | |
509 | 424 &r->headers_out.content_type, |
461 | 425 &r->headers_out.charset) |
426 - ctx->boundary_header.data; | |
427 | |
428 r->headers_out.charset.len = 0; | |
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429 |
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430 } else if (r->headers_out.content_type.len) { |
461 | 431 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
493 | 432 CRLF "--%0muA" CRLF |
461 | 433 "Content-Type: %V" CRLF |
434 "Content-Range: bytes ", | |
435 boundary, | |
509 | 436 &r->headers_out.content_type) |
461 | 437 - ctx->boundary_header.data; |
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438 |
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439 } else { |
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440 ctx->boundary_header.len = ngx_sprintf(ctx->boundary_header.data, |
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441 CRLF "--%0muA" CRLF |
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442 "Content-Range: bytes ", |
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443 boundary) |
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444 - ctx->boundary_header.data; |
461 | 445 } |
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446 |
509 | 447 r->headers_out.content_type.data = |
2049 | 448 ngx_pnalloc(r->pool, |
449 sizeof("Content-Type: multipart/byteranges; boundary=") - 1 | |
450 + NGX_ATOMIC_T_LEN); | |
165
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451 |
509 | 452 if (r->headers_out.content_type.data == NULL) { |
461 | 453 return NGX_ERROR; |
454 } | |
99
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455 |
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456 r->headers_out.content_type_lowcase = NULL; |
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457 |
461 | 458 /* "Content-Type: multipart/byteranges; boundary=0123456789" */ |
99
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459 |
509 | 460 r->headers_out.content_type.len = |
461 ngx_sprintf(r->headers_out.content_type.data, | |
493 | 462 "multipart/byteranges; boundary=%0muA", |
461 | 463 boundary) |
509 | 464 - r->headers_out.content_type.data; |
160
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465 |
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466 r->headers_out.content_type_len = r->headers_out.content_type.len; |
493 | 467 |
461 | 468 /* the size of the last boundary CRLF "--0123456789--" CRLF */ |
493 | 469 |
470 len = sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN + sizeof("--" CRLF) - 1; | |
99
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471 |
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472 range = ctx->ranges.elts; |
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473 for (i = 0; i < ctx->ranges.nelts; i++) { |
455 | 474 |
461 | 475 /* the size of the range: "SSSS-EEEE/TTTT" CRLF CRLF */ |
455 | 476 |
461 | 477 range[i].content_range.data = |
2049 | 478 ngx_pnalloc(r->pool, 3 * NGX_OFF_T_LEN + 2 + 4); |
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479 |
461 | 480 if (range[i].content_range.data == NULL) { |
481 return NGX_ERROR; | |
482 } | |
99
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483 |
461 | 484 range[i].content_range.len = ngx_sprintf(range[i].content_range.data, |
485 "%O-%O/%O" CRLF CRLF, | |
486 range[i].start, range[i].end - 1, | |
487 r->headers_out.content_length_n) | |
488 - range[i].content_range.data; | |
160
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489 |
461 | 490 len += ctx->boundary_header.len + range[i].content_range.len |
491 + (size_t) (range[i].end - range[i].start); | |
492 } | |
99
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493 |
461 | 494 r->headers_out.content_length_n = len; |
960 | 495 |
496 if (r->headers_out.content_length) { | |
497 r->headers_out.content_length->hash = 0; | |
498 r->headers_out.content_length = NULL; | |
499 } | |
99
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500 |
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501 return ngx_http_next_header_filter(r); |
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502 } |
1630 | 503 |
504 | |
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505 static ngx_int_t |
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506 ngx_http_range_not_satisfiable(ngx_http_request_t *r) |
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507 { |
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508 ngx_table_elt_t *content_range; |
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509 |
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510 r->headers_out.status = NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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511 |
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512 content_range = ngx_list_push(&r->headers_out.headers); |
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513 if (content_range == NULL) { |
1630 | 514 return NGX_ERROR; |
515 } | |
516 | |
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517 r->headers_out.content_range = content_range; |
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518 |
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519 content_range->hash = 1; |
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520 ngx_str_set(&content_range->key, "Content-Range"); |
1630 | 521 |
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522 content_range->value.data = ngx_pnalloc(r->pool, |
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523 sizeof("bytes */") - 1 + NGX_OFF_T_LEN); |
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524 if (content_range->value.data == NULL) { |
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525 return NGX_ERROR; |
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526 } |
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527 |
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528 content_range->value.len = ngx_sprintf(content_range->value.data, |
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529 "bytes */%O", |
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530 r->headers_out.content_length_n) |
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531 - content_range->value.data; |
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532 |
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533 ngx_http_clear_content_length(r); |
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534 |
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535 return NGX_HTTP_RANGE_NOT_SATISFIABLE; |
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536 } |
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537 |
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538 |
493 | 539 static ngx_int_t |
540 ngx_http_range_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
99
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541 { |
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542 ngx_http_range_filter_ctx_t *ctx; |
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543 |
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544 if (in == NULL) { |
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545 return ngx_http_next_body_filter(r, in); |
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546 } |
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547 |
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548 ctx = ngx_http_get_module_ctx(r, ngx_http_range_body_filter_module); |
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549 |
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550 if (ctx == NULL) { |
155
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551 return ngx_http_next_body_filter(r, in); |
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552 } |
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553 |
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554 if (ctx->ranges.nelts == 1) { |
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555 return ngx_http_range_singlepart_body(r, ctx, in); |
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|
556 } |
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support several buf's for single-part range
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diff
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|
557 |
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support several buf's for single-part range
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|
558 /* |
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|
559 * multipart ranges are supported only if whole body is in a single buffer |
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|
560 */ |
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|
561 |
962
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diff
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|
562 if (ngx_buf_special(in->buf)) { |
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diff
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|
563 return ngx_http_next_body_filter(r, in); |
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|
564 } |
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support ranges for single memory buffer
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diff
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|
565 |
2118
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split ngx_http_range_filter_module
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diff
changeset
|
566 if (ngx_http_range_test_overlapped(r, ctx, in) != NGX_OK) { |
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split ngx_http_range_filter_module
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|
567 return NGX_ERROR; |
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|
568 } |
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diff
changeset
|
569 |
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split ngx_http_range_filter_module
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diff
changeset
|
570 return ngx_http_range_multipart_body(r, ctx, in); |
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split ngx_http_range_filter_module
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|
571 } |
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split ngx_http_range_filter_module
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diff
changeset
|
572 |
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split ngx_http_range_filter_module
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diff
changeset
|
573 |
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split ngx_http_range_filter_module
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diff
changeset
|
574 static ngx_int_t |
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split ngx_http_range_filter_module
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changeset
|
575 ngx_http_range_test_overlapped(ngx_http_request_t *r, |
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split ngx_http_range_filter_module
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diff
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|
576 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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|
577 { |
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diff
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|
578 off_t start, last; |
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split ngx_http_range_filter_module
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diff
changeset
|
579 ngx_buf_t *buf; |
c1f589732d8c
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diff
changeset
|
580 ngx_uint_t i; |
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split ngx_http_range_filter_module
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diff
changeset
|
581 ngx_http_range_t *range; |
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split ngx_http_range_filter_module
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diff
changeset
|
582 |
962
69754fb59ba1
support ranges for single memory buffer
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diff
changeset
|
583 if (ctx->offset) { |
69754fb59ba1
support ranges for single memory buffer
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diff
changeset
|
584 goto overlapped; |
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support ranges for single memory buffer
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diff
changeset
|
585 } |
69754fb59ba1
support ranges for single memory buffer
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
586 |
2118
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diff
changeset
|
587 buf = in->buf; |
960 | 588 |
589 if (!buf->last_buf) { | |
962
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diff
changeset
|
590 |
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support ranges for single memory buffer
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diff
changeset
|
591 if (buf->in_file) { |
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diff
changeset
|
592 start = buf->file_pos + ctx->offset; |
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diff
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|
593 last = buf->file_last + ctx->offset; |
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support ranges for single memory buffer
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changeset
|
594 |
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support ranges for single memory buffer
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
595 } else { |
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diff
changeset
|
596 start = buf->pos - buf->start + ctx->offset; |
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diff
changeset
|
597 last = buf->last - buf->start + ctx->offset; |
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|
598 } |
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support ranges for single memory buffer
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parents:
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diff
changeset
|
599 |
2118
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diff
changeset
|
600 range = ctx->ranges.elts; |
963
78e70dae89f0
move ranges array to ngx_http_range_filter_ctx_t
Igor Sysoev <igor@sysoev.ru>
parents:
962
diff
changeset
|
601 for (i = 0; i < ctx->ranges.nelts; i++) { |
962
69754fb59ba1
support ranges for single memory buffer
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parents:
961
diff
changeset
|
602 if (start > range[i].start || last < range[i].end) { |
960 | 603 goto overlapped; |
604 } | |
605 } | |
606 } | |
607 | |
962
69754fb59ba1
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961
diff
changeset
|
608 ctx->offset = ngx_buf_size(buf); |
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961
diff
changeset
|
609 |
2118
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split ngx_http_range_filter_module
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diff
changeset
|
610 return NGX_OK; |
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diff
changeset
|
611 |
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split ngx_http_range_filter_module
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diff
changeset
|
612 overlapped: |
960 | 613 |
2118
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diff
changeset
|
614 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
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changeset
|
615 "range in overlapped buffers"); |
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diff
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|
616 |
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diff
changeset
|
617 return NGX_ERROR; |
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|
618 } |
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diff
changeset
|
619 |
962
69754fb59ba1
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diff
changeset
|
620 |
2118
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parents:
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diff
changeset
|
621 static ngx_int_t |
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changeset
|
622 ngx_http_range_singlepart_body(ngx_http_request_t *r, |
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changeset
|
623 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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changeset
|
624 { |
2121
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2119
diff
changeset
|
625 off_t start, last; |
2118
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diff
changeset
|
626 ngx_buf_t *buf; |
2121
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support several buf's for single-part range
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2119
diff
changeset
|
627 ngx_chain_t *out, *cl, **ll; |
2118
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diff
changeset
|
628 ngx_http_range_t *range; |
960 | 629 |
2121
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
630 out = NULL; |
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support several buf's for single-part range
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diff
changeset
|
631 ll = &out; |
2118
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split ngx_http_range_filter_module
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diff
changeset
|
632 range = ctx->ranges.elts; |
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diff
changeset
|
633 |
2121
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support several buf's for single-part range
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2119
diff
changeset
|
634 for (cl = in; cl; cl = cl->next) { |
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2119
diff
changeset
|
635 |
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support several buf's for single-part range
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diff
changeset
|
636 buf = cl->buf; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
637 |
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support several buf's for single-part range
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diff
changeset
|
638 start = ctx->offset; |
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support several buf's for single-part range
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diff
changeset
|
639 last = ctx->offset + ngx_buf_size(buf); |
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diff
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|
640 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
641 ctx->offset = last; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
642 |
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support several buf's for single-part range
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diff
changeset
|
643 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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support several buf's for single-part range
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diff
changeset
|
644 "http range body buf: %O-%O", start, last); |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
645 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
646 if (ngx_buf_special(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
647 *ll = cl; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
648 ll = &cl->next; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
649 continue; |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
650 } |
b39c0040b3e4
support several buf's for single-part range
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parents:
2119
diff
changeset
|
651 |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
652 if (range->end <= start || range->start >= last) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
653 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
654 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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diff
changeset
|
655 "http range body skip"); |
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support several buf's for single-part range
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diff
changeset
|
656 |
2269 | 657 if (buf->in_file) { |
658 buf->file_pos = buf->file_last; | |
659 } | |
660 | |
2121
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diff
changeset
|
661 buf->pos = buf->last; |
2269 | 662 buf->sync = 1; |
663 | |
2121
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support several buf's for single-part range
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diff
changeset
|
664 continue; |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
665 } |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
666 |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
667 if (range->start > start) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
668 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
669 if (buf->in_file) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
670 buf->file_pos += range->start - start; |
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support several buf's for single-part range
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2119
diff
changeset
|
671 } |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
672 |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
673 if (ngx_buf_in_memory(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
674 buf->pos += (size_t) (range->start - start); |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
675 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
parents:
2119
diff
changeset
|
676 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
parents:
2119
diff
changeset
|
677 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
678 if (range->end <= last) { |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
679 |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
680 if (buf->in_file) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
681 buf->file_last -= last - range->end; |
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support several buf's for single-part range
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2119
diff
changeset
|
682 } |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
683 |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
684 if (ngx_buf_in_memory(buf)) { |
b39c0040b3e4
support several buf's for single-part range
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diff
changeset
|
685 buf->last -= (size_t) (last - range->end); |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
686 } |
b39c0040b3e4
support several buf's for single-part range
Igor Sysoev <igor@sysoev.ru>
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2119
diff
changeset
|
687 |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
688 buf->last_buf = 1; |
b39c0040b3e4
support several buf's for single-part range
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2119
diff
changeset
|
689 *ll = cl; |
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690 cl->next = NULL; |
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691 |
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692 break; |
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693 } |
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694 |
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695 *ll = cl; |
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696 ll = &cl->next; |
960 | 697 } |
698 | |
2121
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699 if (out == NULL) { |
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700 return NGX_OK; |
2118
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701 } |
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702 |
2121
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703 return ngx_http_next_body_filter(r, out); |
2118
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704 } |
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705 |
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706 |
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707 static ngx_int_t |
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708 ngx_http_range_multipart_body(ngx_http_request_t *r, |
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709 ngx_http_range_filter_ctx_t *ctx, ngx_chain_t *in) |
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710 { |
2592
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711 off_t body_start; |
2118
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712 ngx_buf_t *b, *buf; |
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713 ngx_uint_t i; |
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714 ngx_chain_t *out, *hcl, *rcl, *dcl, **ll; |
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715 ngx_http_range_t *range; |
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716 |
960 | 717 ll = &out; |
2118
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718 buf = in->buf; |
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719 range = ctx->ranges.elts; |
160
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720 |
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721 #if (NGX_HTTP_CACHE) |
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722 body_start = r->cached ? r->cache->body_start : 0; |
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723 #else |
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724 body_start = 0; |
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725 #endif |
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726 |
963
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727 for (i = 0; i < ctx->ranges.nelts; i++) { |
99
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728 |
960 | 729 /* |
730 * The boundary header of the range: | |
731 * CRLF | |
732 * "--0123456789" CRLF | |
733 * "Content-Type: image/jpeg" CRLF | |
734 * "Content-Range: bytes " | |
735 */ | |
736 | |
737 b = ngx_calloc_buf(r->pool); | |
738 if (b == NULL) { | |
739 return NGX_ERROR; | |
99
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740 } |
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741 |
960 | 742 b->memory = 1; |
743 b->pos = ctx->boundary_header.data; | |
744 b->last = ctx->boundary_header.data + ctx->boundary_header.len; | |
160
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745 |
960 | 746 hcl = ngx_alloc_chain_link(r->pool); |
747 if (hcl == NULL) { | |
748 return NGX_ERROR; | |
749 } | |
461 | 750 |
960 | 751 hcl->buf = b; |
99
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752 |
461 | 753 |
960 | 754 /* "SSSS-EEEE/TTTT" CRLF CRLF */ |
160
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755 |
501 | 756 b = ngx_calloc_buf(r->pool); |
757 if (b == NULL) { | |
461 | 758 return NGX_ERROR; |
759 } | |
760 | |
343
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761 b->temporary = 1; |
960 | 762 b->pos = range[i].content_range.data; |
763 b->last = range[i].content_range.data + range[i].content_range.len; | |
764 | |
765 rcl = ngx_alloc_chain_link(r->pool); | |
766 if (rcl == NULL) { | |
767 return NGX_ERROR; | |
768 } | |
769 | |
770 rcl->buf = b; | |
771 | |
772 | |
773 /* the range data */ | |
461 | 774 |
960 | 775 b = ngx_calloc_buf(r->pool); |
776 if (b == NULL) { | |
777 return NGX_ERROR; | |
778 } | |
779 | |
962
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780 b->in_file = buf->in_file; |
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781 b->temporary = buf->temporary; |
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782 b->memory = buf->memory; |
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783 b->mmap = buf->mmap; |
960 | 784 b->file = buf->file; |
785 | |
962
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786 if (buf->in_file) { |
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787 b->file_pos = body_start + range[i].start; |
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788 b->file_last = body_start + range[i].end; |
962
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|
789 } |
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|
790 |
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|
791 if (ngx_buf_in_memory(buf)) { |
1093 | 792 b->pos = buf->start + (size_t) range[i].start; |
793 b->last = buf->start + (size_t) range[i].end; | |
962
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|
794 } |
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|
795 |
960 | 796 dcl = ngx_alloc_chain_link(r->pool); |
797 if (dcl == NULL) { | |
461 | 798 return NGX_ERROR; |
799 } | |
800 | |
960 | 801 dcl->buf = b; |
461 | 802 |
155
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803 *ll = hcl; |
960 | 804 hcl->next = rcl; |
805 rcl->next = dcl; | |
806 ll = &dcl->next; | |
807 } | |
99
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808 |
960 | 809 /* the last boundary CRLF "--0123456789--" CRLF */ |
810 | |
811 b = ngx_calloc_buf(r->pool); | |
812 if (b == NULL) { | |
813 return NGX_ERROR; | |
814 } | |
815 | |
816 b->temporary = 1; | |
817 b->last_buf = 1; | |
818 | |
2049 | 819 b->pos = ngx_pnalloc(r->pool, sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN |
820 + sizeof("--" CRLF) - 1); | |
960 | 821 if (b->pos == NULL) { |
822 return NGX_ERROR; | |
99
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823 } |
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|
824 |
1195
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|
825 b->last = ngx_cpymem(b->pos, ctx->boundary_header.data, |
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|
826 sizeof(CRLF "--") - 1 + NGX_ATOMIC_T_LEN); |
960 | 827 *b->last++ = '-'; *b->last++ = '-'; |
828 *b->last++ = CR; *b->last++ = LF; | |
829 | |
830 hcl = ngx_alloc_chain_link(r->pool); | |
831 if (hcl == NULL) { | |
832 return NGX_ERROR; | |
833 } | |
834 | |
835 hcl->buf = b; | |
836 hcl->next = NULL; | |
99
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|
837 |
960 | 838 *ll = hcl; |
839 | |
840 return ngx_http_next_body_filter(r, out); | |
99
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|
841 } |
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|
842 |
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|
843 |
493 | 844 static ngx_int_t |
681 | 845 ngx_http_range_header_filter_init(ngx_conf_t *cf) |
99
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|
846 { |
155
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|
847 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
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|
848 ngx_http_top_header_filter = ngx_http_range_header_filter; |
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|
849 |
334
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|
850 return NGX_OK; |
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|
851 } |
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|
852 |
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|
853 |
493 | 854 static ngx_int_t |
681 | 855 ngx_http_range_body_filter_init(ngx_conf_t *cf) |
334
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|
856 { |
155
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|
857 ngx_http_next_body_filter = ngx_http_top_body_filter; |
99
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|
858 ngx_http_top_body_filter = ngx_http_range_body_filter; |
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|
859 |
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|
860 return NGX_OK; |
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|
861 } |