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app.js

[express/connect.static] Set ‘Last-Modified’ to now to avoid 304 Not Modified
OCTOBER 12, 2011 KONSTANTIN VLASENKOLEAVE A COMMENT
Why do I need this? The right answer is: I don’t need that trick!

The example below is just to show how to use routes to intercept requests to a static file.

Put router before static.

app.use(app.router);
app.use(express.static(__dirname + '/static'));
Add '/*' handler (don’t forget to call next())

app.get('/*', function(req, res, next){ 
  res.setHeader('Last-Modified', (new Date()).toUTCString());
  next(); 
});