我正在将squid配置为转发请求的代理，并且打算仅允许example.com请求。这是我的浏览器发出的请求：http://111.222.333.444/http://example.com其中111.222.333.444是我的代理服务器的IP，其中安装了squid。
但是我收到无效网址错误，而服务器正在尝试获取/http://example.com（注意前导斜杠），这里是访问日志记录：
1505858815.396 0 12.34.56.78 NONE/400 3687 GET /http://example.com - NONE/- text/html
以下是我正在使用的配置
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1
acl localnet src all # Allow access from everywhere
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl CONNECT method CONNECT
acl safe_url url_regex example\.com.*
http_access allow safe_url
http_access deny all
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access allow localhost
http_access deny all
http_port 80
coredump_dir /var/spool/squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
我做错了什么？