nginx 經常使用全局變量

$args

$content_length

$content_type

$document_root

$document_uri

$host

$http_user_agent

$http_cookie

$limit_rate

$request_body_file

$request_method

$remote_addr

$remote_port

$remote_user

$request_filename

$request_uri

$query_string

$scheme

$server_protocol

$server_addr

$server_name

$server_port

$uri