view auto/summary @ 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 85dea406e18f
children 9eefb38f0005
line wrap: on
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


echo
echo "Configuration summary"


if [ $USE_THREADS = YES ]; then
    echo "  + using threads"
fi

if [ $USE_PCRE = DISABLED ]; then
    echo "  + PCRE library is disabled"

else
    case $PCRE in
        YES)   echo "  + using system PCRE library" ;;
        NONE)  echo "  + PCRE library is not used" ;;
        *)     echo "  + using PCRE library: $PCRE" ;;
    esac
fi

case $OPENSSL in
    YES)   echo "  + using system OpenSSL library" ;;
    NONE)  echo "  + OpenSSL library is not used" ;;
    *)     echo "  + using OpenSSL library: $OPENSSL" ;;
esac

case $MD5 in
    YES)   echo "  + md5: using $MD5_LIB library" ;;
    NONE)  echo "  + md5 library is not used" ;;
    NO)    echo "  + using builtin md5 code" ;;
    *)     echo "  + using md5 library: $MD5" ;;
esac

case $SHA1 in
    YES)   echo "  + sha1: using $SHA1_LIB library" ;;
    NONE)  echo "  + sha1 library is not used" ;;
    NO)    echo "  + sha1 library is not found" ;;
    *)     echo "  + using sha1 library: $SHA1" ;;
esac

case $ZLIB in
    YES)   echo "  + using system zlib library" ;;
    NONE)  echo "  + zlib library is not used" ;;
    *)     echo "  + using zlib library: $ZLIB" ;;
esac

case $NGX_LIBATOMIC in
    YES)   echo "  + using system libatomic_ops library" ;;
    NO)    ;; # not used
    *)     echo "  + using libatomic_ops library: $NGX_LIBATOMIC" ;;
esac

echo


cat << END
  nginx path prefix: "$NGX_PREFIX"
  nginx binary file: "$NGX_SBIN_PATH"
  nginx modules path: "$NGX_MODULES_PATH"
  nginx configuration prefix: "$NGX_CONF_PREFIX"
  nginx configuration file: "$NGX_CONF_PATH"
  nginx pid file: "$NGX_PID_PATH"
END

if test -n "$NGX_ERROR_LOG_PATH"; then
    echo "  nginx error log file: \"$NGX_ERROR_LOG_PATH\""
else
    echo "  nginx logs errors to stderr"
fi

cat << END
  nginx http access log file: "$NGX_HTTP_LOG_PATH"
  nginx http client request body temporary files: "$NGX_HTTP_CLIENT_TEMP_PATH"
END

if [ $HTTP_PROXY = YES ]; then
    echo "  nginx http proxy temporary files: \"$NGX_HTTP_PROXY_TEMP_PATH\""
fi

if [ $HTTP_FASTCGI = YES ]; then
    echo "  nginx http fastcgi temporary files: \"$NGX_HTTP_FASTCGI_TEMP_PATH\""
fi

if [ $HTTP_UWSGI = YES ]; then
    echo "  nginx http uwsgi temporary files: \"$NGX_HTTP_UWSGI_TEMP_PATH\""
fi

if [ $HTTP_SCGI = YES ]; then
    echo "  nginx http scgi temporary files: \"$NGX_HTTP_SCGI_TEMP_PATH\""
fi

echo "$NGX_POST_CONF_MSG"