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I've used Apple's Network Link Conditioner to simulate a degraded network for my iOS device testing. But I'd like to set up some automated testing where a Mac's wifi hotspot is used as the mobile device-under-test's wifi connection. I'd like to be able to programmatically disable/enable the wifi network as well as disable/enable the networks upstream connection, perhaps under shell control. Any notion on how to achieve this?

Electro-Bunny
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On my MacBook, which has no built-in Ethernet, the following commands turns the Wi-Fi radio off and on:

sudo ifconfig en0 down

sudo ifconfig en0 up

If you enable Internet Connection Sharing you can use these commands to disable and enable Wi-Fi, and the backhaul interface as well, you'll just need to figure out which en device is which.

For finer grained control over the Wi-Fi radio check out the airport tool:

/System/Library/PrivateFrameworks/Apple80211.framework/Resources/airport

alfwatt
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