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view auto/lib/pcre/conf @ 9138:a90f79792b5d
QUIC: optimized ACK delay.
Previously ACK was not generated if max_ack_delay was not yet expired and the
number of unacknowledged ack-eliciting packets was less than two, as allowed by
RFC 9000 13.2.1-13.2.2. However this only makes sense to avoid sending ACK-only
packets, as explained by the RFC:
On the other hand, reducing the frequency of packets that carry only
acknowledgments reduces packet transmission and processing cost at both
endpoints.
Now ACK is delayed only if output frame queue is empty. Otherwise ACK is sent
immediately, which significantly improves QUIC performance with certain tests.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 27 Jul 2023 16:37:17 +0400 |
parents | 0b5f12d5c531 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $PCRE != NONE ]; then if [ -f $PCRE/src/pcre2.h.generic ]; then PCRE_LIBRARY=PCRE2 have=NGX_PCRE . auto/have have=NGX_PCRE2 . auto/have if [ "$NGX_PLATFORM" = win32 ]; then have=PCRE2_STATIC . auto/have fi CORE_INCS="$CORE_INCS $PCRE/src/" CORE_DEPS="$CORE_DEPS $PCRE/src/pcre2.h" case "$NGX_CC_NAME" in msvc) LINK_DEPS="$LINK_DEPS $PCRE/src/pcre2-8.lib" CORE_LIBS="$CORE_LIBS $PCRE/src/pcre2-8.lib" ;; *) LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre2-8.a" CORE_LIBS="$CORE_LIBS $PCRE/.libs/libpcre2-8.a" ;; esac else PCRE_LIBRARY=PCRE have=NGX_PCRE . auto/have if [ "$NGX_PLATFORM" = win32 ]; then have=PCRE_STATIC . auto/have fi CORE_INCS="$CORE_INCS $PCRE" CORE_DEPS="$CORE_DEPS $PCRE/pcre.h" case "$NGX_CC_NAME" in msvc | owc | bcc) LINK_DEPS="$LINK_DEPS $PCRE/pcre.lib" CORE_LIBS="$CORE_LIBS $PCRE/pcre.lib" ;; *) LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre.a" CORE_LIBS="$CORE_LIBS $PCRE/.libs/libpcre.a" ;; esac fi if [ $PCRE_JIT = YES ]; then have=NGX_HAVE_PCRE_JIT . auto/have PCRE_CONF_OPT="$PCRE_CONF_OPT --enable-jit" fi else if [ "$NGX_PLATFORM" != win32 ]; then PCRE=NO fi if [ $PCRE = NO -a $PCRE2 != DISABLED ]; then ngx_feature="PCRE2 library" ngx_feature_name="NGX_PCRE2" ngx_feature_run=no ngx_feature_incs="#define PCRE2_CODE_UNIT_WIDTH 8 #include <pcre2.h>" ngx_feature_path= ngx_feature_libs="-lpcre2-8" ngx_feature_test="pcre2_code *re; re = pcre2_compile(NULL, 0, 0, NULL, NULL, NULL); if (re == NULL) return 1" . auto/feature if [ $ngx_found = no ]; then # pcre2-config ngx_pcre2_prefix=`pcre2-config --prefix 2>/dev/null` if [ -n "$ngx_pcre2_prefix" ]; then ngx_feature="PCRE2 library in $ngx_pcre2_prefix" ngx_feature_path=`pcre2-config --cflags \ | sed -n -e 's/.*-I *\([^ ][^ ]*\).*/\1/p'` ngx_feature_libs=`pcre2-config --libs8` . auto/feature fi fi if [ $ngx_found = yes ]; then have=NGX_PCRE . auto/have CORE_INCS="$CORE_INCS $ngx_feature_path" CORE_LIBS="$CORE_LIBS $ngx_feature_libs" PCRE=YES PCRE_LIBRARY=PCRE2 fi fi if [ $PCRE = NO ]; then ngx_feature="PCRE library" ngx_feature_name="NGX_PCRE" ngx_feature_run=no ngx_feature_incs="#include <pcre.h>" ngx_feature_path= ngx_feature_libs="-lpcre" ngx_feature_test="pcre *re; re = pcre_compile(NULL, 0, NULL, 0, NULL); if (re == NULL) return 1" . auto/feature if [ $ngx_found = no ]; then # FreeBSD port ngx_feature="PCRE library in /usr/local/" ngx_feature_path="/usr/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/local/lib -L/usr/local/lib -lpcre" else ngx_feature_libs="-L/usr/local/lib -lpcre" fi . auto/feature fi if [ $ngx_found = no ]; then # RedHat RPM, Solaris package ngx_feature="PCRE library in /usr/include/pcre/" ngx_feature_path="/usr/include/pcre" ngx_feature_libs="-lpcre" . auto/feature fi if [ $ngx_found = no ]; then # NetBSD port ngx_feature="PCRE library in /usr/pkg/" ngx_feature_path="/usr/pkg/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/usr/pkg/lib -L/usr/pkg/lib -lpcre" else ngx_feature_libs="-L/usr/pkg/lib -lpcre" fi . auto/feature fi if [ $ngx_found = no ]; then # MacPorts ngx_feature="PCRE library in /opt/local/" ngx_feature_path="/opt/local/include" if [ $NGX_RPATH = YES ]; then ngx_feature_libs="-R/opt/local/lib -L/opt/local/lib -lpcre" else ngx_feature_libs="-L/opt/local/lib -lpcre" fi . auto/feature fi if [ $ngx_found = yes ]; then CORE_INCS="$CORE_INCS $ngx_feature_path" CORE_LIBS="$CORE_LIBS $ngx_feature_libs" PCRE=YES PCRE_LIBRARY=PCRE fi if [ $PCRE = YES ]; then ngx_feature="PCRE JIT support" ngx_feature_name="NGX_HAVE_PCRE_JIT" ngx_feature_test="int jit = 0; pcre_free_study(NULL); pcre_config(PCRE_CONFIG_JIT, &jit); if (jit != 1) return 1;" . auto/feature if [ $ngx_found = yes ]; then PCRE_JIT=YES fi fi fi if [ $PCRE != YES ]; then cat << END $0: error: the HTTP rewrite module requires the PCRE library. You can either disable the module by using --without-http_rewrite_module option, or install the PCRE library into the system, or build the PCRE library statically from the source with nginx by using --with-pcre=<path> option. END exit 1 fi fi