Doc Root: document_root

Date: server_date

RemoteLoad Balancer IP: remote_addr

NGINX Version: nginx_version

HTTP Version: http_protocol

Protocol: proto_scheme

Request ID: request_id

Device: user_agent_type

Request URI Path: request_uri_path

Rewrite URI Path: rewrite_uri_path

X-Demo-Name: demo_name

X-Takaaki-Request-IP: request_ip

X-Takaaki-Request-Port: request_port