限制条件

• 如果您的后台存在特殊配置，暂不支持配置Content-Type、Expires、Cache-Control、Vary。
• 以下响应头仅支持修改响应头，不支持将“响应头操作”类型设置为“删除”：

  Content-Base	Content-Type
  Server	Content-Language
  Cache-Control	Expires

• CDN暂不支持以下响应头配置：

  A_Dynamic	If-None-Match	Sec-WebSocket-Origin	X-Forward-Peer
  Accept-Ranges	If-Range	Sec-WebSocket-Protocol	X-Forward-Type
  X-Forward-Ip	Keep-Alive	Sec-WebSocket-Version	X-Forward-Uri
  Allow	Key	Set-Cookie	X-Forwarded-For
  Authentication-Info	Last-Modified	Tcp-Retrans	X-IP-Region
  Authorization	Link	Title	X-IP-Region-CN
  X-Forward-Measured	Location	Transfer-Encoding	X-Ip-Blackwhite-List
  Cdn-Qos	Max-Forwards	Upgrade	X-Local-Ip
  Cdn-Server-Ip	Meter	Sec-WebSocket-Location	X-Log-Url
  Cdn-Src-Ip	Mime-Version	Via	X-MAA-Alias
  Conf-Err-Host	Negotiate	WWW-Authenticate	X-MAA-Auth
  Conf-File	Origin	Warning	X-Max-Conns
  Conf-File-List	Partition-Block-Size	Ws-Hdr	X-Mem-Url
  Conf-Option	Pragma	WsTag	X-Mgr-Traffic
  Conf-Other	Proxy-Authenticate	X-Accelerator-Vary	X-Miss-Rate-Limit
  Connection	Proxy-Authentication-Info	X-Appa	X-Miss-Times-Limit
  Content-Encoding	Proxy-Authorization	X-Appa-Origin	X-No-Referer
  Content-Length	Proxy-Connection	X-Black-List	X-Query-Key
  Content-Location	Proxy-Support	X-Bwctrl-Limit	X-Rate-Limit
  Content-MD5	Public	X-Bwctrl-Para	X-Refresh-Pattern
  Content-Range	Purge-Domain	X-Cache	X-Request-Id
  Sec-WebSocket-Nonce	Purge-Extra	X-Cache-2	X-Request-Uri
  Date	Range	X-Cache-Lookup	X-Request-Url
  Dynamic	Request-Range	X-Cacheable	X-Resp-Time
  ETag	Retry-After	X-Cdn-Src-Port	X-Rewrite-Url
  Error	Sec-WebSocket-Accept	X-Client-Ip	X-Squid-Error
  Expect	Sec-WebSocket-Draft	X-DNS-Time	X-Times-Limit
  If-Modified-Since	Sec-WebSocket-Extensions	X-Denyattack-Dynconf	X-Url-Blackwhite-List
  From	Sec-WebSocket-Key	X-Error-Status	X-Via-CDN
  Front-End-Https	Sec-WebSocket-Key1	X-Error-URL	X-White-List
  Host	Sec-WebSocket-Key2	X-Forward-Host	If-Match