PlatformNotSupportedException for UNIX domain sockets on iOS/tvOS #73374
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The same ones which fail on Linux Bionic, which has a similar problem
src/libraries/Common/src/System/Net/SocketProtocolSupportPal.cs
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Co-authored-by: Theodore Tsirpanis <teo@tsirpanis.gr>
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src/libraries/Common/tests/StreamConformanceTests/System/IO/StreamConformanceTests.cs
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src/libraries/System.Net.Sockets/src/System/Net/Sockets/UnixDomainSocketEndPoint.cs
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src/libraries/System.Net.Sockets/tests/FunctionalTests/UnixDomainSocketTest.cs
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Explicitly mark UNIX domain sockets (and named pipes) with PlatformNotSupportedException.
These never worked on device, where the kernel returns EPERM on socket bind. They worked on the simulator when using
/tmpas the temporary directory instead of the value fromNSTemporaryDirectory(), but this seems to be an oversight by Apple rather than by design - and /tmp is not writable on device. In cases where device and simulator differ, we need to present the device scenario to our users as the canonically correct one.See discussion in #73258
Closes: #51390
Closes: #51335