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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 | 79c04253bc43 |
children |
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#!/bin/sh # Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. LC_ALL=C export LC_ALL . auto/options . auto/init . auto/sources test -d $NGX_OBJS || mkdir -p $NGX_OBJS echo > $NGX_AUTO_HEADERS_H echo > $NGX_AUTOCONF_ERR echo "#define NGX_CONFIGURE \"$NGX_CONFIGURE\"" > $NGX_AUTO_CONFIG_H if [ $NGX_DEBUG = YES ]; then have=NGX_DEBUG . auto/have fi if test -z "$NGX_PLATFORM"; then echo "checking for OS" NGX_SYSTEM=`uname -s 2>/dev/null` NGX_RELEASE=`uname -r 2>/dev/null` NGX_MACHINE=`uname -m 2>/dev/null` echo " + $NGX_SYSTEM $NGX_RELEASE $NGX_MACHINE" NGX_PLATFORM="$NGX_SYSTEM:$NGX_RELEASE:$NGX_MACHINE"; case "$NGX_SYSTEM" in MINGW32_* | MINGW64_* | MSYS_*) NGX_PLATFORM=win32 ;; esac else echo "building for $NGX_PLATFORM" NGX_SYSTEM=$NGX_PLATFORM NGX_MACHINE=i386 fi . auto/cc/conf if [ "$NGX_PLATFORM" != win32 ]; then . auto/headers fi . auto/os/conf if [ "$NGX_PLATFORM" != win32 ]; then . auto/unix fi . auto/threads . auto/modules . auto/lib/conf case ".$NGX_PREFIX" in .) NGX_PREFIX=${NGX_PREFIX:-/usr/local/nginx} have=NGX_PREFIX value="\"$NGX_PREFIX/\"" . auto/define ;; .!) NGX_PREFIX= ;; *) have=NGX_PREFIX value="\"$NGX_PREFIX/\"" . auto/define ;; esac if [ ".$NGX_CONF_PREFIX" != "." ]; then have=NGX_CONF_PREFIX value="\"$NGX_CONF_PREFIX/\"" . auto/define fi have=NGX_SBIN_PATH value="\"$NGX_SBIN_PATH\"" . auto/define have=NGX_CONF_PATH value="\"$NGX_CONF_PATH\"" . auto/define have=NGX_PID_PATH value="\"$NGX_PID_PATH\"" . auto/define have=NGX_LOCK_PATH value="\"$NGX_LOCK_PATH\"" . auto/define have=NGX_ERROR_LOG_PATH value="\"$NGX_ERROR_LOG_PATH\"" . auto/define if [ ".$NGX_ERROR_LOG_PATH" = "." ]; then have=NGX_ERROR_LOG_STDERR . auto/have fi have=NGX_HTTP_LOG_PATH value="\"$NGX_HTTP_LOG_PATH\"" . auto/define have=NGX_HTTP_CLIENT_TEMP_PATH value="\"$NGX_HTTP_CLIENT_TEMP_PATH\"" . auto/define have=NGX_HTTP_PROXY_TEMP_PATH value="\"$NGX_HTTP_PROXY_TEMP_PATH\"" . auto/define have=NGX_HTTP_FASTCGI_TEMP_PATH value="\"$NGX_HTTP_FASTCGI_TEMP_PATH\"" . auto/define have=NGX_HTTP_UWSGI_TEMP_PATH value="\"$NGX_HTTP_UWSGI_TEMP_PATH\"" . auto/define have=NGX_HTTP_SCGI_TEMP_PATH value="\"$NGX_HTTP_SCGI_TEMP_PATH\"" . auto/define . auto/make . auto/lib/make . auto/install # STUB . auto/stubs have=NGX_USER value="\"$NGX_USER\"" . auto/define have=NGX_GROUP value="\"$NGX_GROUP\"" . auto/define if [ ".$NGX_BUILD" != "." ]; then have=NGX_BUILD value="\"$NGX_BUILD\"" . auto/define fi . auto/summary