How to access your app engine dev server from another machine

I keep forgetting how to do this so I’m writing it down in the vain hope I may commit it to memory.

The problem

You want to access your locally running dev server on another machine on your local network or maybe even from a virtual machine. whatevs.

Start your dev server with this extra program argument (you can find this under “debug configurations” in eclipse):

--address=0.0.0.0

Now remember it you stupid brain.

If you’re using Gradle then you need to set it in httpAddress like this:

appengine {
    httpAddress = "0.0.0.0"
    httpPort = 8888
    downloadSdk = true