Merge of r4614, r4624-r4629, r4631: proxy recursive changes. *) Added IPv6 and UNIX-domain socket support in "debug_connection" directive. *) New function ngx_http_get_forwarded_addr() to look up real client address. On input it takes an original address, string in the X-Forwarded-For format and its length, list of trusted proxies, and a flag indicating to perform the recursive search. On output it returns NGX_OK and the "deepest" valid address in a chain, or NGX_DECLINED. It supports AF_INET and AF_INET6. Additionally, original address and/or proxy may be specified as AF_UNIX. *) Realip: chains of trusted proxies and IPv6 support. The module now supports recursive search of client address through the chain of trusted proxies, controlled by the "real_ip_recursive" directive (closes #2). It also gets full IPv6 support (closes #44) and canonical value of the $client_addr variable on address change. Example: real_ip_header X-Forwarded-For; set_real_ip_from 127.0.0.0/8; set_real_ip_from ::1; set_real_ip_from unix:; real_ip_recursive on; *) Geo: chains of trusted proxies and partial IPv6 support. The module now supports recursive search of client address through the chain of trusted proxies, controlled by the "proxy_recursive" directive in the "geo" block. It also gets partial IPv6 support: now proxies may be specified with IPv6 addresses. Example: geo $test { ... proxy 127.0.0.1; proxy ::1; proxy_recursive; } There's also a slight change in behavior. When original client address (as specified by the "geo" directive) is one of the trusted proxies, and the value of the X-Forwarded-For request header cannot not be parsed as a valid address, an original client address will be used for lookup. Previously, 255.255.255.255 was used in this case. *) Geoip: trusted proxies support and partial IPv6 support. The module now supports recursive search of client address through the chain of trusted proxies (closes #100), in the same scope as the geo module. Proxies are listed by the "geoip_proxy" directive, recursive search is enabled by the "geoip_proxy_recursive" directive. IPv6 is partially supported: proxies may be specified with IPv6 addresses. Example: geoip_country .../GeoIP.dat; geoip_proxy 127.0.0.1; geoip_proxy ::1; geoip_proxy 10.0.0.0/8; geoip_proxy_recursive on;

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


echo $ngx_n "checking for $ngx_type size ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for $ngx_type size

END

ngx_size=

cat << END > $NGX_AUTOTEST.c

#include <sys/types.h>
#include <sys/time.h>
$NGX_INCLUDE_UNISTD_H
#include <signal.h>
#include <stdio.h>
#include <sys/resource.h>
$NGX_INCLUDE_INTTYPES_H
$NGX_INCLUDE_AUTO_CONFIG_H

int main() {
    printf("%d", (int) sizeof($ngx_type));
    return 0;
}

END


ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
          -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs"

eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"


if [ -x $NGX_AUTOTEST ]; then
    ngx_size=`$NGX_AUTOTEST`
    echo " $ngx_size bytes"
fi


rm -f $NGX_AUTOTEST


case $ngx_size in
    4)
        if [ "$ngx_type"="long" ]; then
            ngx_max_value=2147483647L
        else
            ngx_max_value=2147483647
        fi

        ngx_max_len='(sizeof("-2147483648") - 1)'
    ;;

    8)
        if [ "$ngx_type"="long long" ]; then
            ngx_max_value=9223372036854775807LL
        else
            ngx_max_value=9223372036854775807L
        fi

        ngx_max_len='(sizeof("-9223372036854775808") - 1)'
    ;;

    *)
        echo
        echo "$0: error: can not detect $ngx_type size"

        echo "----------"    >> $NGX_AUTOCONF_ERR
        cat $NGX_AUTOTEST.c  >> $NGX_AUTOCONF_ERR
        echo "----------"    >> $NGX_AUTOCONF_ERR
        echo $ngx_test       >> $NGX_AUTOCONF_ERR
        echo "----------"    >> $NGX_AUTOCONF_ERR

        exit 1
esac