Overview#

WebFinger is a protocol Discovery Mechanism specified by the IETF that allows for discovery of information about Entities identified by a URI using standard Hypertext Transfer Protocol HTTP methods over a secure transport.[1]

Information about a person might be discovered via an "acct:" URI, for example, which is a URI that looks like an email address.

A WebFinger resource returns a JSON Resource Descriptor (JRD) describing the entity that is queried.

WebFinger is described in RFC 7033

WebFinger is specified as the discovery protocol for OpenID Connect.

WebFinger is a Well-known URI#

WebFinger has a suffix of "webfinger" registered as a Well-known URI.

Example Query[2]#

Google provides a WebFinger for Gmail users like: http://www.google.com/s2/webfinger/?q=windley@gmail.com which returned:
<?xml version='1.0'?>
<XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0'>
	<Subject>acct:windley@gmail.com</Subject>
	<Alias>http://www.google.com/profiles/windley</Alias>
	<Link rel='http://portablecontacts.net/spec/1.0' href='http://www-opensocial.googleusercontent.com/api/people/'/>
	<Link rel='http://portablecontacts.net/spec/1.0#me' href='http://www-opensocial.googleusercontent.com/api/people/103887646945247867113/'/>
	<Link rel='http://webfinger.net/rel/profile-page' href='http://www.google.com/profiles/windley' type='text/plain'/>
	<Link rel='http://microformats.org/profile/hcard' href='http://www.google.com/profiles/windley' type='text/plain'/>
	<Link rel='http://gmpg.org/xfn/11' href='http://www.google.com/profiles/windley' type='text/plain'/>
	<Link rel='http://specs.openid.net/auth/2.0/provider' href='http://www.google.com/profiles/windley'/>
	<Link rel='describedby' href='http://www.google.com/profiles/windley' type='text/plain'/>
	<Link rel='describedby' href='https://www.google.com/s2/webfinger/?q=windley@gmail.com&amp;fmt=foaf' type='application/rdf+xml'/>
</XRD>

More Information#

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More Information#


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« This page (revision-8) was last changed on 22-May-2016 04:25 by jim