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+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using System.Threading.Tasks;
+using Grpc.Core.Utils;
+using NUnit.Framework;
+
+namespace Grpc.Core.Tests
+{
+ public class AppDomainUnloadTest
+ {
+#if NETSTANDARD1_5
+ [Test]
+ [Ignore("Not supported for CoreCLR")]
+ public void AppDomainUnloadHookCanCleanupAbandonedCall()
+ {
+ }
+#else
+ [Test]
+ public void AppDomainUnloadHookCanCleanupAbandonedCall()
+ {
+ var setup = new AppDomainSetup
+ {
+ ApplicationBase = AppDomain.CurrentDomain.BaseDirectory
+ };
+ var childDomain = AppDomain.CreateDomain("test", null, setup);
+ var remoteObj = childDomain.CreateInstance(typeof(AppDomainTestClass).Assembly.GetName().Name, typeof(AppDomainTestClass).FullName);
+
+ // Try to unload the appdomain once we've created a server and a channel inside the appdomain.
+ AppDomain.Unload(childDomain);
+ }
+
+ public class AppDomainTestClass
+ {
+ const string Host = "127.0.0.1";
+
+ /// <summary>
+ /// Creates a server and a channel and initiates a call. The code is invoked from inside of an AppDomain
+ /// to test if AppDomain.Unload() work if Grpc is being used.
+ /// </summary>
+ public AppDomainTestClass()
+ {
+ var helper = new MockServiceHelper(Host);
+ var server = helper.GetServer();
+ server.Start();
+ var channel = helper.GetChannel();
+
+ var readyToShutdown = new TaskCompletionSource<object>();
+ helper.DuplexStreamingHandler = new DuplexStreamingServerMethod<string, string>(async (requestStream, responseStream, context) =>
+ {
+ readyToShutdown.SetResult(null);
+ await requestStream.ToListAsync();
+ });
+
+ var call = Calls.AsyncDuplexStreamingCall(helper.CreateDuplexStreamingCall());
+ readyToShutdown.Task.Wait(); // make sure handler is running
+ }
+ }
+#endif
+ }
+}