Fix 403 Errors on Port 5000

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I often use port 5000 when developing web apps, and it wasn’t working on my Mac: always returning a 403 error, but only in Chrome: Firefox and curl both worked.

The clue was that the user agent was AirTunes/800.74.5. A little searching uncovered that Apple is using this port for AirPlay.

To disable it: Settings -> General -> AirDrop & Handoff -> AirPlay Receiver: off

No idea why it was only a problem in Chrome: maybe Chrome resolves localhost differently?