Imported Upstream version 4.4.0.182

Former-commit-id: ea38b2115ac3af9a394fe6cddf2be2acd11bc002

mcs/class/System/Test/System.Net.Sockets/SocketAcceptAsyncTest.cs

@@ -0,0 +1,60 @@
+using System.Threading;
+using System.Net;
+using System.Net.Sockets;
+using NUnit.Framework;
+
+namespace MonoTests.System.Net.Sockets
+{
+	[TestFixture]
+	public class SocketAcceptAsyncTest
+	{
+		[Test]
+		public void AcceptAsyncShouldUseAcceptSocketFromEventArgs()
+		{
+			var readyEvent = new ManualResetEvent(false);
+			var mainEvent = new ManualResetEvent(false);
+			var listenSocket = new Socket(
+				AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+			var serverSocket = new Socket(
+					AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+			Socket acceptedSocket = null;
+
+			ThreadPool.QueueUserWorkItem(_ =>
+			{
+				listenSocket.Bind(new IPEndPoint(IPAddress.Loopback, 0));
+				listenSocket.Listen(1);
+
+				var asyncEventArgs = new SocketAsyncEventArgs {AcceptSocket = serverSocket};
+				asyncEventArgs.Completed += (s, e) =>
+				{
+					acceptedSocket = e.AcceptSocket;
+					mainEvent.Set();
+				};
+
+				readyEvent.Set();
+
+				if (listenSocket.AcceptAsync(asyncEventArgs))
+					return;
+				acceptedSocket = asyncEventArgs.AcceptSocket;
+				mainEvent.Set();
+			});
+			Assert.IsTrue(readyEvent.WaitOne(1500));
+
+			var clientSocket = new Socket(
+				AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+			clientSocket.Connect(listenSocket.LocalEndPoint);
+			clientSocket.NoDelay = true;
+
+			Assert.IsTrue(mainEvent.WaitOne(1500));
+			Assert.AreEqual(serverSocket, acceptedSocket);
+			mainEvent.Reset();
+
+			if (acceptedSocket != null)
+				acceptedSocket.Close();
+
+			listenSocket.Close();
+			readyEvent.Close();
+			mainEvent.Close();
+		}
+	}
+}