Http/1.1 entity headers

I have I question.

Does the http daemon has to be prepared to receive the ETag header or the
Expires header?

Where does the http daemon receives tha tag sended in the Etag header from?

I guess the server is not requiered to be prepared to receive IF-MAtch if it
doesn't send an Etag with a tag fo any of its documents, I'm I right?

Can the server respond with an error if it receive entity headers in a GET
method for example? or should it ignore it?

My guess is that the daemon should only receive them when receiving a PUT
method. But If that method is not suported? and if thath methos is supported by
another http daemon which has access to tha same resources as the first, then
accepting ETag will force the first daemon to send Etag also, see the problem,
what should the second daemon do?

Received on Friday, 24 January 1997 20:41:45 UTC