How different is networking on simulator vs device?
How different is networking on simulator vs device?
- Subject: How different is networking on simulator vs device?
- From: Jens Alfke <email@hidden>
- Date: Fri, 15 Jun 2018 10:16:33 -0700
How different is networking on the simulator vs. on an actual iOS device? That
is, at what level does the simulator connect to the host Mac? I imagine it's
one of
(a) The system calls — socket(), connect(), write(), etc. — are
forwarded to the Mac system calls
(b) The simulator has its own implementation of networking and talks
directly to the host network interface
I ask because I'm wondering how necessary it is to run network-related tests on
iOS hardware as opposed to the simulator. Obviously the former is better, but
it's harder to set up and requires access to a lot more devices, so our QE team
ends up doing mostly the latter.
—Jens
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