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comparison src/http/modules/ngx_http_not_modified_filter.c @ 155:46eb23d9471d

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nginx-0.0.1-2003-10-22-20:38:26 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 22 Oct 2003 16:38:26 +0000
parents c71aeb75c071
children 4db54fdbcbe7
comparison
equal deleted inserted replaced
154:eac26585476e 155:46eb23d9471d
28 ngx_http_not_modified_filter_init, /* init module */ 28 ngx_http_not_modified_filter_init, /* init module */
29 NULL /* init child */ 29 NULL /* init child */
30 }; 30 };
31 31
32 32
33 static int (*next_header_filter) (ngx_http_request_t *r); 33 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
34 34
35 35
36 static int ngx_http_not_modified_header_filter(ngx_http_request_t *r) 36 static int ngx_http_not_modified_header_filter(ngx_http_request_t *r)
37 { 37 {
38 time_t ims; 38 time_t ims;
39 39
40 if (r->headers_out.status != NGX_HTTP_OK 40 if (r->headers_out.status != NGX_HTTP_OK
41 || r->headers_in.if_modified_since == NULL 41 || r->headers_in.if_modified_since == NULL
42 || r->headers_out.last_modified_time == -1) 42 || r->headers_out.last_modified_time == -1)
43 { 43 {
44 return next_header_filter(r); 44 return ngx_http_next_header_filter(r);
45 } 45 }
46 46
47 ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data, 47 ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data,
48 r->headers_in.if_modified_since->value.len); 48 r->headers_in.if_modified_since->value.len);
49 49
50 ngx_log_debug(r->connection->log, "%d %d" _ 50 ngx_log_debug(r->connection->log, "%d %d" _
51 ims _ r->headers_out.last_modified_time); 51 ims _ r->headers_out.last_modified_time);
52 52
53 /* I think that the equality of the dates is correcter */ 53 /*
54 * I think that the equality of the dates is correcter
55 */
54 56
55 if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) { 57 if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) {
56 r->headers_out.status = NGX_HTTP_NOT_MODIFIED; 58 r->headers_out.status = NGX_HTTP_NOT_MODIFIED;
57 r->headers_out.content_length_n = -1; 59 r->headers_out.content_length_n = -1;
58 r->headers_out.content_length = NULL; 60 r->headers_out.content_length = NULL;
59 r->headers_out.content_type->key.len = 0; 61 r->headers_out.content_type->key.len = 0;
60 r->headers_out.content_type = NULL; 62 r->headers_out.content_type = NULL;
61 r->headers_out.accept_ranges->key.len = 0; 63 r->headers_out.accept_ranges->key.len = 0;
62 } 64 }
63 65
64 return next_header_filter(r); 66 return ngx_http_next_header_filter(r);
65 } 67 }
66 68
67 69
68 static int ngx_http_not_modified_filter_init(ngx_cycle_t *cycle) 70 static int ngx_http_not_modified_filter_init(ngx_cycle_t *cycle)
69 { 71 {
70 next_header_filter = ngx_http_top_header_filter; 72 ngx_http_next_header_filter = ngx_http_top_header_filter;
71 ngx_http_top_header_filter = ngx_http_not_modified_header_filter; 73 ngx_http_top_header_filter = ngx_http_not_modified_header_filter;
72 74
73 return NGX_OK; 75 return NGX_OK;
74 } 76 }