token
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... is desired or necessary. This memo defines the "TLS/1.0" Upgrade
token, and a new HTTP Status Code, "426 Upgrade Required".
...
... client sends an HTTP/1.1 request with an Upgrade header
field containing the token "TLS/1.0", it is requesting the server to
complete the current HTTP/1.1 ...
... Protocol" and MUST include an Upgrade response header specifying the
tokens of the protocol stack it is switching to:
...
...
Note that the protocol tokens listed in the Upgrade header of a 101
Switching Protocols response specify an ordered 'bottom-up ...
... status code, which MUST
include an an Upgrade header field specifying the token of the
required TLS version ...
... Registry defines the name space for the Status-
Code token in the Status line of an HTTP response. The initial
values for this name space ...
... Registry defines the name space for product
tokens used to identify protocols in the Upgrade HTTP header field.
Each registered token ...
... tokens used to identify protocols in the Upgrade HTTP header field.
Each registered token should be associated with one or a set of
specifications, and with contact information.
...
... Draft Standard for HTTP/1.1 [1] specifies that these tokens obey
the production for 'product':
...
... A token, once registered, stays registered forever. ...
... The registration MAY name the documentation required for the
token. ...
... The responsible party for the first registration of a "product"
token MUST approve later registrations of a "version" token ...
... token MUST approve later registrations of a "version" token
together with that "product" token before they can be registered. ...
... If absolutely required, the IESG MAY reassign the responsibility
for a token. This will normally only be used in the case when a
responsible party cannot be contacted. ...
...
It is NOT required that specifications for upgrade tokens be made
publicly available, but the contact information for the registration
...
... Harald Alvestrand for improvements to the token registration
rules. ...