Mercurial > hg > nginx
view auto/lib/pcre/conf @ 6566:ce94f07d5082
HTTP/2: implemented preread buffer for request body (closes #959).
Previously, the stream's window was kept zero in order to prevent a client
from sending the request body before it was requested (see 887cca40ba6a for
details). Until such initial window was acknowledged all requests with
data were rejected (see 0aa07850922f for details).
That approach revealed a number of problems:
1. Some clients (notably MS IE/Edge, Safari, iOS applications) show an error
or even crash if a stream is rejected;
2. This requires at least one RTT for every request with body before the
client receives window update and able to send data.
To overcome these problems the new directive "http2_body_preread_size" is
introduced. It sets the initial window and configures a special per stream
preread buffer that is used to save all incoming data before the body is
requested and processed.
If the directive's value is lower than the default initial window (65535),
as previously, all streams with data will be rejected until the new window
is acknowledged. Otherwise, no special processing is used and all requests
with data are welcome right from the connection start.
The default value is chosen to be 64k, which is bigger than the default
initial window. Setting it to zero is fully complaint to the previous
behavior.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 24 May 2016 17:37:52 +0300 |
parents | 78f8ac479735 |
children | 8007ea138d6a |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $PCRE != NONE ]; then CORE_INCS="$CORE_INCS $PCRE" case "$NGX_CC_NAME" in msvc | owc | bcc) have=NGX_PCRE . auto/have have=PCRE_STATIC . auto/have CORE_DEPS="$CORE_DEPS $PCRE/pcre.h" LINK_DEPS="$LINK_DEPS $PCRE/pcre.lib" CORE_LIBS="$CORE_LIBS $PCRE/pcre.lib" ;; icc) have=NGX_PCRE . auto/have CORE_DEPS="$CORE_DEPS $PCRE/pcre.h" LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre.a" echo $ngx_n "checking for PCRE library ...$ngx_c" if [ -f $PCRE/pcre.h ]; then ngx_pcre_ver=`grep PCRE_MAJOR $PCRE/pcre.h \ | sed -e 's/^.*PCRE_MAJOR.* \(.*\)$/\1/'` else if [ -f $PCRE/configure.in ]; then ngx_pcre_ver=`grep PCRE_MAJOR= $PCRE/configure.in \ | sed -e 's/^.*=\(.*\)$/\1/'` else ngx_pcre_ver=`grep pcre_major, $PCRE/configure.ac \ | sed -e 's/^.*pcre_major,.*\[\(.*\)\].*$/\1/'` fi fi echo " $ngx_pcre_ver major version found" # to allow -ipo optimization we link with the *.o but not library case "$ngx_pcre_ver" in 4|5) CORE_LIBS="$CORE_LIBS $PCRE/pcre.o" ;; 6) CORE_LIBS="$CORE_LIBS $PCRE/pcre_chartables.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_compile.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_exec.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_fullinfo.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_globals.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_tables.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_try_flipped.o" ;; *) CORE_LIBS="$CORE_LIBS $PCRE/pcre_chartables.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_compile.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_exec.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_fullinfo.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_globals.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_tables.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_try_flipped.o" CORE_LIBS="$CORE_LIBS $PCRE/pcre_newline.o" ;; esac ;; *) have=NGX_PCRE . auto/have if [ "$NGX_PLATFORM" = win32 ]; then have=PCRE_STATIC . auto/have fi CORE_DEPS="$CORE_DEPS $PCRE/pcre.h" LINK_DEPS="$LINK_DEPS $PCRE/.libs/libpcre.a" CORE_LIBS="$CORE_LIBS $PCRE/.libs/libpcre.a" ;; esac 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 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 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