mozilla/browserid — comment on commit 758af8d17ad1ac4d97e01ae2501a8e9e930ec2db
File: lib/browserid/views.js line 63
By lloyd:

I wonder about the relative merits of this approach, vs letting the static middleware do the actual file sending. so rather than res.sendfile()

req.url = '/include_js/include.js'
next();

The benefit of this approach is that I think you'll get proper `ETag` headers and the other headers the static middleware applies. I don't know if the same is true for `res.sendfile()`