CODEWITHSUNDEEP
iosxcodeproxyios-simulatorxcode8
inosu812
inosu812

Reputation: 121

iOS 10 Simulator Not Working Behind Proxy

I am having a problem since upgrading to Xcode 8 from 7.3.1.
I am behind a proxy at work and the simulator will not make any connections to web services though my app although Safari on the simulator works.
Everything works fine when I try outside the proxy and it works fine with 7.3.1.

Does anyone now of any changes with Xcode 8 & iOS 10 that I need to make?

Upvotes: 1

Views: 3237

Answers (1)

russbishop
russbishop

Reputation: 17219

The Simulator runs a separate iOS/watchOS/tvOS userspace but shares the host macOS kernel. NSURLSession in the Simulator has its own cache but uses the host socket layer.

Try the relevant URI in Safari in the Simulator and see what you get. If your proxy is performing a man-in-the-middle attack on SSL connections they will be rejected as invalid. If your proxy requires authentication it won't work because the Simulator keychain is separate from the host keychain (though this was done in Xcode 7 so it isn't new).

FTW: We do not recommend that proxies MITM SSL connections; that leaves you dangerously exposed to attackers operating inside the corporate firewall, which is extremely common these days thanks to phishing attacks.

We also highly recommend that you limit ATS exceptions to the absolute minimum required. If your webservice is using insecure SSL settings you should upgrade your webservice, rather than down-grading your users to vulnerable connections. If there is only one or two third-party hosts you need to connect to, limit your ATS exceptions to just those hosts.

If none of this helps please file a bug at https://bugreporter.apple.com. Include the output of sysdiagnose and ~/Library/Logs/CoreSimulator.

Upvotes: 1

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