Mercurial > hg > nginx-vendor-current
view src/http/modules/ngx_http_not_modified_filter_module.c @ 466:9eda3153223b NGINX_0_7_45
nginx 0.7.45
*) Change: now the "proxy_cache" and the "proxy_cache_valid" can be set
on different levels.
*) Change: the "clean_time" parameter of the "proxy_cache_path"
directive is canceled.
*) Feature: the "max_size" parameter of the "proxy_cache_path"
directive.
*) Feature: the ngx_http_fastcgi_module preliminary cache support.
*) Feature: now on shared memory allocation errors directive and zone
names are logged.
*) Bugfix: the directive "add_header last-modified ''" did not delete a
"Last-Modified" response header line; the bug had appeared in 0.7.44.
*) Bugfix: a relative path in the "auth_basic_user_file" directive
given without variables did not work; the bug had appeared in
0.7.44.
Thanks to Jerome Loyet.
*) Bugfix: in an "alias" directive given using variables without
references to captures of regular expressions; the bug had appeared
in 0.7.42.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 30 Mar 2009 00:00:00 +0400 |
parents | c8cfb6c462ef |
children | 549994537f15 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static ngx_int_t ngx_http_not_modified_filter_init(ngx_conf_t *cf); static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = { NULL, /* preconfiguration */ ngx_http_not_modified_filter_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ NULL, /* create location configuration */ NULL /* merge location configuration */ }; ngx_module_t ngx_http_not_modified_filter_module = { NGX_MODULE_V1, &ngx_http_not_modified_filter_module_ctx, /* module context */ NULL, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_http_output_header_filter_pt ngx_http_next_header_filter; static ngx_int_t ngx_http_not_modified_header_filter(ngx_http_request_t *r) { time_t ims; ngx_http_core_loc_conf_t *clcf; if (r->headers_out.status != NGX_HTTP_OK || r != r->main || r->headers_in.if_modified_since == NULL || r->headers_out.last_modified_time == -1) { return ngx_http_next_header_filter(r); } clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); if (clcf->if_modified_since == NGX_HTTP_IMS_OFF) { return ngx_http_next_header_filter(r); } ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data, r->headers_in.if_modified_since->value.len); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http ims:%d lm:%d", ims, r->headers_out.last_modified_time); if (ims != r->headers_out.last_modified_time) { if (clcf->if_modified_since == NGX_HTTP_IMS_EXACT || ims < r->headers_out.last_modified_time) { return ngx_http_next_header_filter(r); } } r->headers_out.status = NGX_HTTP_NOT_MODIFIED; r->headers_out.status_line.len = 0; r->headers_out.content_type.len = 0; ngx_http_clear_content_length(r); ngx_http_clear_accept_ranges(r); return ngx_http_next_header_filter(r); } static ngx_int_t ngx_http_not_modified_filter_init(ngx_conf_t *cf) { ngx_http_next_header_filter = ngx_http_top_header_filter; ngx_http_top_header_filter = ngx_http_not_modified_header_filter; return NGX_OK; }