Tag Name reply_body_max_size
Usage reply_body_max_size (KB)

Description
This option specifies the maximum size of a reply body. It can be used to prevent users from downloading very large files, such as MP3′s and movies. The reply size is checked twice. First when we get the reply headers, we check the content-length value. If the content length value exists and is larger than this parameter, the request is denied and the user receives an error message that says “the request or reply is too large.” If there is no content-length, and the reply size exceeds this limit, the client’s connection is just closed and they will receive a partial reply.

Default reply_body_max_size 0
If this parameter is set to zero (the default), there will be no limit imposed.

Caution
Downstream caches probably cannot detect a partial reply if there is no content-length header, so they will cache partial responses and give them out as hits. You should NOT use this option, if you have downstream caches.