windtear 追求完美

squid 和 apache 如果跑在同一台机器上
squid 工作在反向加速模式(可基于单主机加速 或 代理+单主机加速)
apache Listen 127.0.0.1:80 (Port 80 BindAddress 127.0.0.1)

此时 apache log 的是 127.0.0.1
如果想在 apache 做 log 并记录原IP
就需要 mod_extract_forwarded

官方主页：
http://web.warhound.org/mod_extract_forwarded
http://web.warhound.org/mod_extract_forwarded/mod_extract_forwarded.c

配置见
http://web.warhound.org/mod_extract_forwarded/mod_extract_forwarded.html

编译
apxs -c -o mod_extract_forwarded.so mod_extract_forwarded.c

cp -a mod_extract_forwarded.so /usr/lib/apache/

# add in /etc/httpd/conf/httpd.conf
LoadModule extract_forwarded_module modules/mod_extract_forwarded.so

AddModule mod_extract_forwarded.c
AllowForwarderCaching On
AddAcceptForwarder all