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... HTTP, with the addition of a
few new methods, header fields and return codes. All HTCPCP servers
should be referred to with the "coffee:" URI scheme ...
... Coffee Pot Header fields ...
...
HTCPCP recommends several HTTP header fields and defines some new
ones.
...
... Recommended header fields ...
... The "safe" response header field. ...
... [SAFE] defines a HTTP response header field, "Safe", which can be
used to indicate that repeating a HTTP request is safe. The inclusion
...
... used to indicate that repeating a HTTP request is safe. The inclusion
of a "Safe: Yes" header field allows a client to repeat a previous
request if the result of the request might be repeated.
...
... client rather than just in
the server. Thus, this protocol includes an extension to the "Safe"
response header:
...
... New header fields ...
... The Accept-Additions header field ...
...
In HTTP, the "Accept" request-header field is used to specify media
types which are acceptable for the response. However, in HTCPCP, the
response may result in additional actions on the part of the
...
... media
types which are acceptable for the response. However, in HTCPCP, the
response may result in additional actions on the part of the
automated pot. For this reason, HTCPCP adds a new header field,
"Accept-Additions":
...
... Omitted Header Fields ...
... by the request is only capable of generating response entities which
have content characteristics not acceptable according to the accept
headers sent in the request. In HTCPCP, this response code MAY be
returned if the operator of the coffee pot cannot comply with the
...
... Content-Type
"message/coffeepot". Since most of the information for controlling
the coffee pot is conveyed by the additional headers, the content of
"message/coffeepot" contains only a coffee-message-body:
...
... versions in order to accommodate HTCPCP-
specific methods, headers and trailers, but such upgrades will be
easily accommodated. Most home network system administrators ...
... K. Holtman. "The Safe Response Header Field", September 1997. ...