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QUIC: prevented generating ACK frames with discarded keys.
Previously it was possible to generate ACK frames using formally discarded
protection keys, in particular, when acknowledging a client Handshake packet
used to complete the TLS handshake and to discard handshake protection keys.
As it happens late in packet processing, it could be possible to generate ACK
frames after the keys were already discarded.
ACK frames are generated from ngx_quic_ack_packet(), either using a posted
push event, which envolves ngx_quic_generate_ack() as a part of the final
packet assembling, or directly in ngx_quic_ack_packet(), such as when there
is no room to add a new ACK range or when the received packet is out of order.
The added keys availability check is used to avoid generating late ACK frames
in both cases.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Fri, 20 Oct 2023 18:05:07 +0400 |
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