registration request for dns-prefetch, preconnect, prefetch, and prerender link relation types

[Erik Wilde <[e-mail]>]

hello link-relations.

https://www.w3.org/TR/2016/WD-resource-hints-20160126/#iana-considerations 
defines 4 new link relation types that should be added to the IANA link 
relation registry. here is an excerpt with the link relation type 
descriptions:

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7.1 dns-prefetch Link Relation Type

Relation Name: dns-prefetch
Description: The dns-prefetch link relation type is used to indicate an 
origin that will be used to fetch required resources, and that the user 
agent SHOULD resolve as early as possible.

7.2 preconnect Link Relation Type

Relation Name: preconnect
Description: The preconnect link relation type is used to indicate an 
origin that will be used to fetch required resources. Initiating an 
early connection, which includes the DNS lookup, TCP handshake, and 
optional TLS negotiation, allows the user agent to mask the high latency 
costs of establishing a connection.

7.3 prefetch Link Relation Type

Relation Name: prefetch
Description: The prefetch link relation type is used to declare a 
resource that might be required by the next navigation, and that the 
user agent SHOULD fetch, such that the user agent can deliver a faster 
response once the resource is requested in the future.

7.4 prerender Link Relation Type

Relation Name: prerender
Description: The prerender link relation type is used to declare an HTML 
resource that might be required by the next navigation, and that the 
user agent SHOULD fetch and execute, such that the user agent can 
deliver faster response and processing once the resource is requested in 
the future.

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if there are any concerns or questions about these link relations types, 
please let us know.

thanks a lot and cheers,

dret.

-- 
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