client
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... HTTP 1.1 ([RFC2068]) permits the transfer of web objects from origin
servers to clients. The web is world-wide. HTCPCP is based on HTTP.
This is because HTTP ...
...
Commands to control a coffee pot are sent from client to coffee
server using either the BREW or POST method, and a message body ...
... 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.
...
...
The actual safety of devices for brewing coffee varies widely, and
may depend, in fact, on conditions in the client rather than just in
the server. Thus, this protocol includes an extension to the "Safe"
response header ...