Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_not_modified_filter.c @ 379:73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 06 Jul 2004 16:12:16 +0000 |
parents | 2e3cbc1bbe3c |
children | da8c5707af39 |
rev | line source |
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135
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_http.h> |
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5 |
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6 |
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356
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8 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle); |
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9 |
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10 |
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11 static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = { |
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12 NULL, /* pre conf */ |
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13 |
135
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14 NULL, /* create main configuration */ |
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15 NULL, /* init main configuration */ |
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16 |
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17 NULL, /* create server configuration */ |
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18 NULL, /* merge server configuration */ |
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19 |
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20 NULL, /* create location configuration */ |
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21 NULL /* merge location configuration */ |
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22 }; |
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23 |
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24 |
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25 ngx_module_t ngx_http_not_modified_filter_module = { |
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26 NGX_MODULE, |
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27 &ngx_http_not_modified_filter_module_ctx, /* module context */ |
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28 NULL, /* module directives */ |
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29 NGX_HTTP_MODULE, /* module type */ |
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30 ngx_http_not_modified_filter_init, /* init module */ |
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31 NULL /* init child */ |
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32 }; |
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33 |
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34 |
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nginx-0.0.1-2003-10-22-20:38:26 import
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35 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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36 |
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37 |
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38 static ngx_int_t ngx_http_not_modified_header_filter(ngx_http_request_t *r) |
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39 { |
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40 time_t ims; |
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41 |
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42 if (r->headers_out.status != NGX_HTTP_OK |
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43 || r->headers_in.if_modified_since == NULL |
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nginx-0.0.1-2003-10-09-11:00:45 import
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44 || r->headers_out.last_modified_time == -1) |
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45 { |
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46 return ngx_http_next_header_filter(r); |
135
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47 } |
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48 |
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49 ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data, |
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50 r->headers_in.if_modified_since->value.len); |
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51 |
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nginx-0.0.2-2004-02-11-20:08:49 import
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52 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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53 "http ims:%d lm:%d", ims, r->headers_out.last_modified_time); |
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54 |
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55 /* |
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56 * I think that the equality of the dates is correcter |
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57 */ |
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58 |
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59 if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) { |
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60 r->headers_out.status = NGX_HTTP_NOT_MODIFIED; |
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61 r->headers_out.content_type->key.len = 0; |
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62 r->headers_out.content_type = NULL; |
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63 r->headers_out.content_length_n = -1; |
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64 r->headers_out.content_length = NULL; |
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65 #if 0 |
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66 r->headers_out.accept_ranges->key.len = 0; |
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67 #endif |
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68 } |
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69 |
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70 return ngx_http_next_header_filter(r); |
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71 } |
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72 |
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73 |
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74 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle) |
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75 { |
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76 ngx_http_next_header_filter = ngx_http_top_header_filter; |
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77 ngx_http_top_header_filter = ngx_http_not_modified_header_filter; |
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78 |
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79 return NGX_OK; |
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80 } |