Mercurial > hg > nginx
view src/os/win32/ngx_service.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 | a1caf3989b49 |
children |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #define NGX_SERVICE_CONTROL_SHUTDOWN 128 #define NGX_SERVICE_CONTROL_REOPEN 129 SERVICE_TABLE_ENTRY st[] = { { "nginx", service_main }, { NULL, NULL } }; ngx_int_t ngx_service(ngx_log_t *log) { /* primary thread */ /* StartServiceCtrlDispatcher() should be called within 30 seconds */ if (StartServiceCtrlDispatcher(st) == 0) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "StartServiceCtrlDispatcher() failed"); return NGX_ERROR; } return NGX_OK; } void service_main(u_int argc, char **argv) { SERVICE_STATUS status; SERVICE_STATUS_HANDLE service; /* thread spawned by SCM */ service = RegisterServiceCtrlHandlerEx("nginx", service_handler, ctx); if (service == INVALID_HANDLE_VALUE) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "RegisterServiceCtrlHandlerEx() failed"); return; } status.dwServiceType = SERVICE_WIN32_OWN_PROCESS; status.dwCurrentState = SERVICE_START_PENDING; status.dwControlsAccepted = SERVICE_ACCEPT_STOP |SERVICE_ACCEPT_PARAMCHANGE; status.dwWin32ExitCode = NO_ERROR; status.dwServiceSpecificExitCode = 0; status.dwCheckPoint = 1; status.dwWaitHint = 2000; /* SetServiceStatus() should be called within 80 seconds */ if (SetServiceStatus(service, &status) == 0) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "SetServiceStatus() failed"); return; } /* init */ status.dwCurrentState = SERVICE_RUNNING; status.dwCheckPoint = 0; status.dwWaitHint = 0; if (SetServiceStatus(service, &status) == 0) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "SetServiceStatus() failed"); return; } /* call master or worker loop */ /* * master should use event notification and look status * single should use iocp to get notifications from service handler */ } u_int service_handler(u_int control, u_int type, void *data, void *ctx) { /* primary thread */ switch (control) { case SERVICE_CONTROL_INTERROGATE: status = NGX_IOCP_INTERROGATE; break; case SERVICE_CONTROL_STOP: status = NGX_IOCP_STOP; break; case SERVICE_CONTROL_PARAMCHANGE: status = NGX_IOCP_RECONFIGURE; break; case NGX_SERVICE_CONTROL_SHUTDOWN: status = NGX_IOCP_REOPEN; break; case NGX_SERVICE_CONTROL_REOPEN: status = NGX_IOCP_REOPEN; break; default: return ERROR_CALL_NOT_IMPLEMENTED; } if (ngx_single) { if (PostQueuedCompletionStatus(iocp, ... status, ...) == 0) { err = ngx_errno; ngx_log_error(NGX_LOG_ALERT, log, err, "PostQueuedCompletionStatus() failed"); return err; } } else { Event } return NO_ERROR; }