Mercurial > hg > nginx
view src/os/win32/ngx_errno.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 | 746567d633ac |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> u_char * ngx_strerror(ngx_err_t err, u_char *errstr, size_t size) { u_int len; static u_long lang = MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US); if (size == 0) { return errstr; } len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, lang, (char *) errstr, size, NULL); if (len == 0 && lang) { /* * Try to use English messages first and fallback to a language, * based on locale: non-English Windows have no English messages * at all. This way allows to use English messages at least on * Windows with MUI. */ lang = 0; len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, lang, (char *) errstr, size, NULL); } if (len == 0) { return ngx_snprintf(errstr, size, "FormatMessage() error:(%d)", GetLastError()); } /* remove ".\r\n\0" */ while (errstr[len] == '\0' || errstr[len] == CR || errstr[len] == LF || errstr[len] == '.') { --len; } return &errstr[++len]; } ngx_int_t ngx_strerror_init(void) { return NGX_OK; }