view src/os/win32/ngx_errno.h @ 6428:545b5e4d83b2

Upstream: avoid closing client connection in edge case. If proxy_cache is enabled, and proxy_no_cache tests true, it was previously possible for the client connection to be closed after a 304. The fix is to recheck r->header_only after the final cacheability is determined, and end the request if no longer cacheable. Example configuration: proxy_cache foo; proxy_cache_bypass 1; proxy_no_cache 1; If a client sends If-None-Match, and the upstream server returns 200 with a matching ETag, no body should be returned to the client. At the start of ngx_http_upstream_send_response proxy_no_cache is not yet tested, thus cacheable is still 1 and downstream_error is set. However, by the time the downstream_error check is done in process_request, proxy_no_cache has been tested and cacheable is set to 0. The client connection is then closed, regardless of keepalive.
author Justin Li <jli.justinli@gmail.com>
date Tue, 08 Mar 2016 22:31:55 -0500
parents 3c5ddf0575d8
children a5897d360977
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_ERRNO_H_INCLUDED_
#define _NGX_ERRNO_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


typedef DWORD                      ngx_err_t;

#define ngx_errno                  GetLastError()
#define ngx_set_errno(err)         SetLastError(err)
#define ngx_socket_errno           WSAGetLastError()
#define ngx_set_socket_errno(err)  WSASetLastError(err)

#define NGX_EPERM                  ERROR_ACCESS_DENIED
#define NGX_ENOENT                 ERROR_FILE_NOT_FOUND
#define NGX_ENOPATH                ERROR_PATH_NOT_FOUND
#define NGX_ENOMEM                 ERROR_NOT_ENOUGH_MEMORY
#define NGX_EACCES                 ERROR_ACCESS_DENIED
/* it's seems that ERROR_FILE_EXISTS is not appropriate error code */
#define NGX_EEXIST                 ERROR_ALREADY_EXISTS
/*
 * could not found cross volume directory move error code,
 * so use ERROR_WRONG_DISK as stub one
 */
#define NGX_EXDEV                  ERROR_WRONG_DISK
#define NGX_ENOTDIR                ERROR_PATH_NOT_FOUND
#define NGX_EISDIR                 ERROR_CANNOT_MAKE
#define NGX_ENOSPC                 ERROR_DISK_FULL
#define NGX_EPIPE                  EPIPE
#define NGX_EAGAIN                 WSAEWOULDBLOCK
#define NGX_EINPROGRESS            WSAEINPROGRESS
#define NGX_ENOPROTOOPT            WSAENOPROTOOPT
#define NGX_EOPNOTSUPP             WSAEOPNOTSUPP
#define NGX_EADDRINUSE             WSAEADDRINUSE
#define NGX_ECONNABORTED           WSAECONNABORTED
#define NGX_ECONNRESET             WSAECONNRESET
#define NGX_ENOTCONN               WSAENOTCONN
#define NGX_ETIMEDOUT              WSAETIMEDOUT
#define NGX_ECONNREFUSED           WSAECONNREFUSED
#define NGX_ENAMETOOLONG           ERROR_BAD_PATHNAME
#define NGX_ENETDOWN               WSAENETDOWN
#define NGX_ENETUNREACH            WSAENETUNREACH
#define NGX_EHOSTDOWN              WSAEHOSTDOWN
#define NGX_EHOSTUNREACH           WSAEHOSTUNREACH
#define NGX_ENOMOREFILES           ERROR_NO_MORE_FILES
#define NGX_EILSEQ                 ERROR_NO_UNICODE_TRANSLATION
#define NGX_ELOOP                  0
#define NGX_EBADF                  WSAEBADF

#define NGX_EALREADY               WSAEALREADY
#define NGX_EINVAL                 WSAEINVAL
#define NGX_EMFILE                 WSAEMFILE
#define NGX_ENFILE                 WSAEMFILE


u_char *ngx_strerror(ngx_err_t err, u_char *errstr, size_t size);
ngx_int_t ngx_strerror_init(void);


#endif /* _NGX_ERRNO_H_INCLUDED_ */