Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_not_modified_filter.c @ 135:e29909bd9b8a
nginx-0.0.1-2003-09-28-23:29:06 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 28 Sep 2003 19:29:06 +0000 |
parents | |
children | da00cde00e8a |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static int ngx_http_not_modified_filter_init(ngx_cycle_t *cycle); static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = { 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, &ngx_http_not_modified_filter_module_ctx, /* module context */ NULL, /* module directives */ NGX_HTTP_MODULE, /* module type */ ngx_http_not_modified_filter_init, /* init module */ NULL /* init child */ }; static int (*next_header_filter) (ngx_http_request_t *r); static int ngx_http_not_modified_header_filter(ngx_http_request_t *r) { time_t ims; if (r->headers_out.status != NGX_HTTP_OK || r->headers_in.if_modified_since == NULL || r->headers_out.last_modified_time == NULL) { return 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_debug(r->connection->log, "%d %d" _ ims _ r->headers_out.last_modified_time); /* I think that the date equality is correcter */ if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) { r->headers_out.status = NGX_HTTP_NOT_MODIFIED; r->headers_out.content_length = -1; r->headers_out.content_type->key.len = 0; r->headers_out.content_type = NULL; /* TODO: delete "Accept-Ranges" header } return next_header_filter(r); } static int ngx_http_not_modified_filter_init(ngx_cycle_t *cycle) { next_header_filter = ngx_http_top_header_filter; ngx_http_top_header_filter = ngx_http_not_modified_header_filter; return NGX_OK; }