0.0.3 • Published 9 years ago
prefer-js v0.0.3
HTTP Prefer Middleware
Connect middleware for the Prefer Header (http://tools.ietf.org/html/rfc7240)
Installation:
npm install prefer-js
Example:
var app = require('express')();
app.use(require('prefer'));
app.get('/', function(req,res) {
var prefer = req.prefer;
if (prefer.handling === 'strict') {
// strict handling
} else if (prefer.handling === 'lenient') {
// lenient handling
}
if (prefer.respondAsync) {
// client prefers async response
}
if (prefer.wait) {
var n = prefer.wait;
// client will wait n seconds for a response
}
if (prefer.return === 'minimal') {
// client prefers a minimal response
} else if (prefer.return === 'representation') {
// client prefers a representation response
}
if (prefer.foo) {
// client specified the 'foo' extension preference
}
res.preferenceApplied('handling');
res.preferenceApplied('return');
// if application of a preference results in a varied response,
// be sure to set the Vary header in the response also
res.status(204).end();
});
app.listen(port);