+ add_header(req, "HTTP_HOST", "Host")
+ add_header(req, "HTTP_COOKIE", "Cookie")
+ add_header(req, "HTTP_REFERER", "Referer")
+ add_header(req, "CONTENT_LENGTH", "Content-Length")
+ add_header(req, "CONTENT_TYPE", "Content-Type")
+ add_header(req, "HTTP_USER_AGENT", "User-Agent")
+ add_header(req, "HTTP_CACHE_CONTROL", "Cache-Control")
+ add_header(req, "HTTP_AUTHORIZATION", "Authorization")
+ add_header(req, "HTTP_ACCEPT", "Accept")
+ add_header(req, "HTTP_ACCEPT_CHARSET", "Accept-Charset")
+ add_header(req, "HTTP_ACCEPT_ENCODING", "Accept-Encoding")
+ add_header(req, "HTTP_ACCEPT_LANGUAGE", "Accept-Language")