Mercurial > hg > nginx-quic
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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 | d620f497c50f |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. ngx_include="unistd.h"; . auto/include ngx_include="inttypes.h"; . auto/include ngx_include="limits.h"; . auto/include ngx_include="sys/filio.h"; . auto/include ngx_include="sys/param.h"; . auto/include ngx_include="sys/mount.h"; . auto/include ngx_include="sys/statvfs.h"; . auto/include ngx_include="crypt.h"; . auto/include