Mercurial > hg > nginx-quic
view auto/lib/perl/conf @ 8895:457afc332c67
Stream: don't flush empty buffers created for read errors.
When we generate the last_buf buffer for an UDP upstream recv error, it does
not contain any data from the wire. ngx_stream_write_filter attempts to forward
it anyways, which is incorrect (e.g., UDP upstream ECONNREFUSED will be
translated to an empty packet).
This happens because we mark the buffer as both 'flush' and 'last_buf', and
ngx_stream_write_filter has special handling for flush with certain types of
connections (see d127837c714f, 32b0ba4855a6). The flags are meant to be
mutually exclusive, so the fix is to ensure that flush and last_buf are not set
at the same time.
Reproduction:
stream {
upstream unreachable {
server 127.0.0.1:8880;
}
server {
listen 127.0.0.1:8998 udp;
proxy_pass unreachable;
}
}
1 0.000000000 127.0.0.1 → 127.0.0.1 UDP 47 45588 → 8998 Len=5
2 0.000166300 127.0.0.1 → 127.0.0.1 UDP 47 51149 → 8880 Len=5
3 0.000172600 127.0.0.1 → 127.0.0.1 ICMP 75 Destination unreachable (Port
unreachable)
4 0.000202400 127.0.0.1 → 127.0.0.1 UDP 42 8998 → 45588 Len=0
Fixes d127837c714f.
author | Aleksei Bavshin <a.bavshin@f5.com> |
---|---|
date | Mon, 23 May 2022 11:29:44 -0700 |
parents | 30b6f1ff192b |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo "checking for perl" NGX_PERL_VER=`$NGX_PERL -v 2>&1 | grep '^This is perl' 2>&1 \ | sed -e 's/^This is perl, \(.*\)/\1/'` if test -n "$NGX_PERL_VER"; then echo " + perl version: $NGX_PERL_VER" if [ "`$NGX_PERL -e 'use 5.008006; print "OK"'`" != "OK" ]; then echo echo "$0: error: perl 5.8.6 or higher is required" echo exit 1; fi if [ "`$NGX_PERL -MExtUtils::Embed -e 'print "OK"'`" != "OK" ]; then echo echo "$0: error: perl module ExtUtils::Embed is required" echo exit 1; fi NGX_PM_CFLAGS=`$NGX_PERL -MExtUtils::Embed -e ccopts` NGX_PM_LDFLAGS=`$NGX_PERL -MConfig -e 'print $Config{lddlflags}'` NGX_PERL_CFLAGS="$CFLAGS `$NGX_PERL -MExtUtils::Embed -e ccopts`" # gcc 4.1/4.2 warn about unused values in pTHX_ NGX_PERL_CFLAGS=`echo $NGX_PERL_CFLAGS \ | sed -e 's/-Wunused-value/-Wno-unused-value/'` # icc8 warns 'declaration hides parameter "my_perl"' in ENTER and LEAVE NGX_PERL_CFLAGS=`echo $NGX_PERL_CFLAGS \ | sed -e 's/-wd171/-wd171 -wd1599/'` ngx_perl_ldopts=`$NGX_PERL -MExtUtils::Embed -e ldopts` ngx_perl_dlext=`$NGX_PERL -MConfig -e 'print $Config{dlext}'` ngx_perl_libdir="src/http/modules/perl/blib/arch/auto" ngx_perl_module="$ngx_perl_libdir/nginx/nginx.$ngx_perl_dlext" if $NGX_PERL -V:usemultiplicity | grep define > /dev/null; then have=NGX_HAVE_PERL_MULTIPLICITY . auto/have echo " + perl interpreter multiplicity found" fi if $NGX_PERL -V:useithreads | grep undef > /dev/null; then # FreeBSD port wants to link with -pthread non-threaded perl ngx_perl_ldopts=`echo $ngx_perl_ldopts | sed 's/ -pthread//'` fi if [ "$NGX_SYSTEM" = "Darwin" ]; then # OS X system perl wants to link universal binaries ngx_perl_ldopts=`echo $ngx_perl_ldopts \ | sed -e 's/-arch i386//' -e 's/-arch x86_64//'` fi if [ $USE_PERL = YES ]; then CORE_LINK="$CORE_LINK $ngx_perl_ldopts" fi NGX_LIB_PERL="$ngx_perl_ldopts" if test -n "$NGX_PERL_MODULES"; then have=NGX_PERL_MODULES value="(u_char *) \"$NGX_PERL_MODULES\"" . auto/define NGX_PERL_MODULES_MAN=$NGX_PERL_MODULES/man3 fi else echo echo "$0: error: perl 5.8.6 or higher is required" echo exit 1; fi