private static unsafe void CreateSocket()
{
Debug.Assert(Monitor.IsEntered(s_gate));
Debug.Assert(Socket == null, "Socket is not null, must close existing socket before opening another.");
var sh = new SafeSocketHandle();
IntPtr newSocket;
Interop.Error result = Interop.Sys.CreateNetworkChangeListenerSocket(&newSocket);
if (result != Interop.Error.SUCCESS)
{
string message = Interop.Sys.GetLastErrorInfo().GetErrorMessage();
sh.Dispose();
throw new NetworkInformationException(message);
}
Marshal.InitHandle(sh, newSocket);
Socket = new Socket(sh);
// Don't capture ExecutionContext.
ThreadPool.UnsafeQueueUserWorkItem(
public void Dispose()
{
_handle.Dispose();
}
public ValueTask UnbindAsync(CancellationToken cancellationToken = default)
{
_listenSocket?.Dispose();
_socketHandle?.Dispose();
return(default);
public async Task SendFileGetsCanceledByDispose(bool owning)
{
// Aborting sync operations for non-owning handles is not supported on Unix.
if (!owning && UsesSync && !PlatformDetection.IsWindows)
{
return;
}
// We try this a couple of times to deal with a timing race: if the Dispose happens
// before the operation is started, the peer won't see a ConnectionReset SocketException and we won't
// see a SocketException either.
int msDelay = 100;
await RetryHelper.ExecuteAsync(async() =>
{
(Socket socket1, Socket socket2) = SocketTestExtensions.CreateConnectedSocketPair();
using SafeSocketHandle? owner = ReplaceWithNonOwning(ref socket1, owning);
using (socket2)
{
Task socketOperation = Task.Run(async() =>
{
// Create a large file that will cause SendFile to block until the peer starts reading.
using var tempFile = TempFile.Create();
using (var fs = new FileStream(tempFile.Path, FileMode.CreateNew, FileAccess.Write))
{
fs.SetLength(20 * 1024 * 1024 /* 20MB */);
}
await SendFileAsync(socket1, tempFile.Path);
});
// Wait a little so the operation is started.
await Task.Delay(msDelay);
msDelay *= 2;
Task disposeTask = Task.Run(() => socket1.Dispose());
await Task.WhenAny(disposeTask, socketOperation).WaitAsync(TimeSpan.FromSeconds(30));
await disposeTask;
SocketError?localSocketError = null;
try
{
await socketOperation;
}
catch (SocketException se)
{
localSocketError = se.SocketErrorCode;
}
if (UsesSync)
{
Assert.Equal(SocketError.ConnectionAborted, localSocketError);
}
else
{
Assert.Equal(SocketError.OperationAborted, localSocketError);
}
owner?.Dispose();
// On OSX, we're unable to unblock the on-going socket operations and
// perform an abortive close.
if (!(UsesSync && PlatformDetection.IsOSXLike))
{
SocketError?peerSocketError = null;
var receiveBuffer = new byte[4096];
while (true)
{
try
{
int received = socket2.Receive(receiveBuffer);
if (received == 0)
{
break;
}
}
catch (SocketException se)
{
peerSocketError = se.SocketErrorCode;
break;
}
}
Assert.Equal(SocketError.ConnectionReset, peerSocketError);
}
}
}, maxAttempts : 10, retryWhen : e => e is XunitException);
}