Mercurial > hg > nginx
annotate src/http/modules/ngx_http_not_modified_filter_module.c @ 501:d4ea69372b94 release-0.1.25
nginx-0.1.25-RELEASE import
*) Bugfix: nginx did run on Linux parisc.
*) Feature: nginx now does not start under FreeBSD if the sysctl
kern.ipc.somaxconn value is too big.
*) Bugfix: if a request was internally redirected by the
ngx_http_index_module module to the ngx_http_proxy_module or
ngx_http_fastcgi_module modules, then the index file was not closed
after request completion.
*) Feature: the "proxy_pass" can be used in location with regular
expression.
*) Feature: the ngx_http_rewrite_filter_module module supports the
condition like "if ($HTTP_USER_AGENT ~ MSIE)".
*) Bugfix: nginx started too slow if the large number of addresses and
text values were used in the "geo" directive.
*) Change: a variable name must be declared as "$name" in the "geo"
directive. The previous variant without "$" is still supported, but
will be removed soon.
*) Feature: the "%{VARIABLE}v" logging parameter.
*) Feature: the "set $name value" directive.
*) Bugfix: gcc 4.0 compatibility.
*) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sat, 19 Mar 2005 12:38:37 +0000 |
parents | src/http/modules/ngx_http_not_modified_filter.c@a88a3e4e158f |
children | 9b8c906f6e63 |
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 |
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4 */ |
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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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13 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle); |
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14 |
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15 |
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16 static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = { |
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17 NULL, /* pre conf */ |
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18 |
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19 NULL, /* create main configuration */ |
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20 NULL, /* init main configuration */ |
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21 |
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22 NULL, /* create server configuration */ |
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23 NULL, /* merge server configuration */ |
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24 |
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25 NULL, /* create location configuration */ |
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26 NULL /* merge location configuration */ |
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27 }; |
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28 |
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29 |
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30 ngx_module_t ngx_http_not_modified_filter_module = { |
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31 NGX_MODULE, |
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32 &ngx_http_not_modified_filter_module_ctx, /* module context */ |
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33 NULL, /* module directives */ |
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34 NGX_HTTP_MODULE, /* module type */ |
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35 ngx_http_not_modified_filter_init, /* init module */ |
461 | 36 NULL /* init process */ |
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37 }; |
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38 |
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39 |
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40 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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41 |
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42 |
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43 static ngx_int_t ngx_http_not_modified_header_filter(ngx_http_request_t *r) |
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44 { |
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45 time_t ims; |
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46 |
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47 if (r->headers_out.status != NGX_HTTP_OK |
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48 || r->headers_in.if_modified_since == NULL |
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49 || r->headers_out.last_modified_time == -1) |
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50 { |
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51 return ngx_http_next_header_filter(r); |
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52 } |
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53 |
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54 ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data, |
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55 r->headers_in.if_modified_since->value.len); |
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56 |
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57 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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58 "http ims:%d lm:%d", ims, r->headers_out.last_modified_time); |
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59 |
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60 /* |
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61 * I think that the equality of the dates is correcter |
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62 */ |
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63 |
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64 if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) { |
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65 r->headers_out.status = NGX_HTTP_NOT_MODIFIED; |
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66 r->headers_out.content_type->key.len = 0; |
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67 r->headers_out.content_type = NULL; |
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68 r->headers_out.content_length_n = -1; |
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69 r->headers_out.content_length = NULL; |
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70 #if 0 |
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71 r->headers_out.accept_ranges->key.len = 0; |
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72 #endif |
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73 } |
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74 |
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75 return ngx_http_next_header_filter(r); |
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76 } |
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77 |
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78 |
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79 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle) |
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80 { |
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81 ngx_http_next_header_filter = ngx_http_top_header_filter; |
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82 ngx_http_top_header_filter = ngx_http_not_modified_header_filter; |
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83 |
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84 return NGX_OK; |
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85 } |