Mercurial > hg > nginx
view src/os/win32/ngx_dlopen.c @ 8041:0784ab86ad08
Upstream: fixed X-Accel-Expires/Cache-Control/Expires handling.
Previously, if caching was disabled due to Expires in the past, nginx
failed to cache the response even if it was cacheable as per subsequently
parsed Cache-Control header (ticket #964).
Similarly, if caching was disabled due to Expires in the past,
"Cache-Control: no-cache" or "Cache-Control: max-age=0", caching was not
used if it was cacheable as per subsequently parsed X-Accel-Expires header.
Fix is to avoid disabling caching immediately after parsing Expires in
the past or Cache-Control, but rather set flags which are later checked by
ngx_http_upstream_process_headers() (and cleared by "Cache-Control: max-age"
and X-Accel-Expires).
Additionally, now X-Accel-Expires does not prevent parsing of cache control
extensions, notably stale-while-revalidate and stale-if-error. This
ensures that order of the X-Accel-Expires and Cache-Control headers is not
important.
Prodded by Vadim Fedorenko and Yugo Horie.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 07 Jun 2022 00:07:12 +0300 |
parents | 7142b04337d6 |
children |
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/* * Copyright (C) Maxim Dounin * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> char * ngx_dlerror(void) { u_char *p; static u_char errstr[NGX_MAX_ERROR_STR]; p = ngx_strerror(ngx_errno, errstr, NGX_MAX_ERROR_STR); *p = '\0'; return (char *) errstr; }