Mercurial > hg > nginx
view src/http/modules/ngx_http_not_modified_filter_module.c @ 1417:b23a80f9a7b8
set current peer to use it in ngx_http_upstream_free_round_robin_peer()
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 24 Aug 2007 15:29:50 +0000 |
parents | 7e24168b0853 |
children | b67b75bb09b7 |
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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; 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); } 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); /* * I think that the equality of the dates 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_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; }