Link-based Resource Descriptor Document (LRDD) middleware middleware for Connect and Express.
LRDD is a mechanism used to discover metadata about resources available on the Internet. It defines the protocol and document formats used for other discovery protocols such as Web Host Metadata and WebFinger.
$ npm install connect-lrdd
To service LRDD requests, use lrdd.descriptor() middleware in your application.
app.get('/lrdd', lrdd.descriptor(function(uri, done) {
Resource.findByUri({ uri: uri }, function (err, resource) {
if (err) { return done(err); }
var desc = new lrdd.Descriptor(uri);
// add properties and links to descriptor...
return done(null, desc);
});
}));
The function supplied to lrdd.descriptor() takes uri and a done callback
as arguments. uri identifies a resource available at the host. done is a
callback which should be called with descriptor for the resource. If an
exception occurred, err should be set.
For a complete, working example, refer to the host-meta example.
$ npm install
$ npm test
Copyright (c) 2011-2014 Jared Hanson <http://jaredhanson.net/>