1 #region Copyright notice and license
2 
3 // Copyright 2015 gRPC authors.
4 //
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 //
9 //     http://www.apache.org/licenses/LICENSE-2.0
10 //
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
16 
17 #endregion
18 
19 using System;
20 using System.Diagnostics;
21 using System.Linq;
22 using System.Threading;
23 using System.Threading.Tasks;
24 using Grpc.Core;
25 using Grpc.Core.Internal;
26 using Grpc.Core.Utils;
27 using NUnit.Framework;
28 
29 namespace Grpc.Core.Tests
30 {
31     public class ShutdownTest
32     {
33         const string Host = "127.0.0.1";
34 
35         MockServiceHelper helper;
36         Server server;
37         Channel channel;
38 
39         [SetUp]
Init()40         public void Init()
41         {
42             helper = new MockServiceHelper(Host);
43             server = helper.GetServer();
44             server.Start();
45             channel = helper.GetChannel();
46         }
47 
48         [Test]
AbandonedCall_ServerKillAsync()49         public async Task AbandonedCall_ServerKillAsync()
50         {
51             var readyToShutdown = new TaskCompletionSource<object>();
52             helper.DuplexStreamingHandler = new DuplexStreamingServerMethod<string, string>(async (requestStream, responseStream, context) =>
53             {
54                 readyToShutdown.SetResult(null);
55                 await requestStream.ToListAsync();
56             });
57 
58             var call = Calls.AsyncDuplexStreamingCall(helper.CreateDuplexStreamingCall());
59             await readyToShutdown.Task;  // make sure handler is running
60 
61             await channel.ShutdownAsync();  // channel.ShutdownAsync() works even if there's a pending call.
62             await server.KillAsync();  // server.ShutdownAsync() would hang waiting for the call to finish.
63         }
64     }
65 }
66