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Fix server adapter memory leak and UnitTests

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This commit is contained in:
Christian Kratky
2020-07-25 23:34:30 +02:00
parent 5056843611
commit 4e6aeb91a4
11 changed files with 125 additions and 92 deletions
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Build/MQTTnet.nuspec
+1
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@@ -17,6 +17,7 @@
* [Server] Adjusted some namespaces (BREAKING CHANGE!)
* [Server] Added state checks (throw if not started etc.) for most server APIs.
* [Server] Exposed real X509Certificate2 (instead byte array) to TLS options (thanks to @borigas).
* [Server] Fixed memory leak with TCP sockets (MqttServer is now sealed!) (BREAKING CHANGE!)
* [Core] Fixed a null reference exception in the MqttTcpChannel with WriteAsync and ReadAsync.
* [Core] Added server interceptor for undelivered messages (thanks to @cshark-inator).
* [nuget] Added support for SourceLink (thanks to @JTOne123).
Source/MQTTnet/Adapter/MqttChannelAdapter.cs
+7 -7
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@@ -58,9 +58,9 @@ namespace MQTTnet.Adapter
public async Task ConnectAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
if (timeout == TimeSpan.Zero)
@@ -85,9 +85,9 @@ namespace MQTTnet.Adapter
public async Task DisconnectAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
if (timeout == TimeSpan.Zero)
@@ -113,9 +113,9 @@ namespace MQTTnet.Adapter
public async Task SendPacketAsync(MqttBasePacket packet, TimeSpan timeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
await _writerSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
@@ -169,8 +169,8 @@ namespace MQTTnet.Adapter
public async Task<MqttBasePacket> ReceivePacketAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
Source/MQTTnet/Implementations/MqttTcpServerAdapter.cs
+3 -9
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@@ -1,7 +1,6 @@
#if !WINDOWS_UWP
using MQTTnet.Adapter;
using MQTTnet.Diagnostics;
using MQTTnet.Internal;
using MQTTnet.Server;
using System;
using System.Collections.Generic;
@@ -13,7 +12,7 @@ using System.Threading.Tasks;
namespace MQTTnet.Implementations
{
public sealed class MqttTcpServerAdapter : Disposable, IMqttServerAdapter
public sealed class MqttTcpServerAdapter : IMqttServerAdapter
{
readonly List<MqttTcpServerListener> _listeners = new List<MqttTcpServerListener>();
readonly IMqttNetScopedLogger _logger;
@@ -67,14 +66,9 @@ namespace MQTTnet.Implementations
return PlatformAbstractionLayer.CompletedTask;
}
protected override void Dispose(bool disposing)
public void Dispose()
{
if (disposing)
{
Cleanup();
}
base.Dispose(disposing);
Cleanup();
}
void Cleanup()
Source/MQTTnet/Server/IMqttServer.cs
+3 -2
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@@ -1,10 +1,11 @@
using MQTTnet.Server.Status;
using System;
using MQTTnet.Server.Status;
using System.Collections.Generic;
using System.Threading.Tasks;
namespace MQTTnet.Server
{
public interface IMqttServer : IApplicationMessageReceiver, IApplicationMessagePublisher
public interface IMqttServer : IApplicationMessageReceiver, IApplicationMessagePublisher, IDisposable
{
bool IsStarted { get; }
IMqttServerStartedHandler StartedHandler { get; set; }
Source/MQTTnet/Server/MqttClientSession.cs
+2 -2
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@@ -51,14 +51,14 @@ namespace MQTTnet.Server
var checkSubscriptionsResult = SubscriptionsManager.CheckSubscriptions(applicationMessage.Topic, applicationMessage.QualityOfServiceLevel);
if (!checkSubscriptionsResult.IsSubscribed)
{
return true;
return false;
}
_logger.Verbose("Queued application message with topic '{0}' (ClientId: {1}).", applicationMessage.Topic, ClientId);
ApplicationMessagesQueue.Enqueue(applicationMessage, senderClientId, checkSubscriptionsResult.QualityOfServiceLevel, isRetainedApplicationMessage);
return false;
return true;
}
public async Task SubscribeAsync(ICollection<MqttTopicFilter> topicFilters)
Source/MQTTnet/Server/MqttServer.cs
+30 -5
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@@ -11,10 +11,11 @@ using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MQTTnet.Implementations;
using MQTTnet.Internal;
namespace MQTTnet.Server
{
public class MqttServer : IMqttServer
public class MqttServer : Disposable, IMqttServer
{
readonly MqttServerEventDispatcher _eventDispatcher;
readonly ICollection<IMqttServerAdapter> _adapters;
@@ -77,6 +78,7 @@ namespace MQTTnet.Server
public Task<IList<IMqttClientStatus>> GetClientStatusAsync()
{
ThrowIfDisposed();
ThrowIfNotStarted();
return _clientSessionsManager.GetClientStatusAsync();
@@ -84,6 +86,7 @@ namespace MQTTnet.Server
public Task<IList<IMqttSessionStatus>> GetSessionStatusAsync()
{
ThrowIfDisposed();
ThrowIfNotStarted();
return _clientSessionsManager.GetSessionStatusAsync();
@@ -91,6 +94,7 @@ namespace MQTTnet.Server
public Task<IList<MqttApplicationMessage>> GetRetainedApplicationMessagesAsync()
{
ThrowIfDisposed();
ThrowIfNotStarted();
return _retainedMessagesManager.GetMessagesAsync();
@@ -98,6 +102,7 @@ namespace MQTTnet.Server
public Task ClearRetainedApplicationMessagesAsync()
{
ThrowIfDisposed();
ThrowIfNotStarted();
return _retainedMessagesManager?.ClearMessagesAsync() ?? PlatformAbstractionLayer.CompletedTask;
@@ -107,7 +112,8 @@ namespace MQTTnet.Server
{
if (clientId == null) throw new ArgumentNullException(nameof(clientId));
if (topicFilters == null) throw new ArgumentNullException(nameof(topicFilters));
ThrowIfDisposed();
ThrowIfNotStarted();
return _clientSessionsManager.SubscribeAsync(clientId, topicFilters);
@@ -118,6 +124,7 @@ namespace MQTTnet.Server
if (clientId == null) throw new ArgumentNullException(nameof(clientId));
if (topicFilters == null) throw new ArgumentNullException(nameof(topicFilters));
ThrowIfDisposed();
ThrowIfNotStarted();
return _clientSessionsManager.UnsubscribeAsync(clientId, topicFilters);
@@ -127,6 +134,8 @@ namespace MQTTnet.Server
{
if (applicationMessage == null) throw new ArgumentNullException(nameof(applicationMessage));
ThrowIfDisposed();
MqttTopicValidator.ThrowIfInvalid(applicationMessage.Topic);
ThrowIfNotStarted();
@@ -138,6 +147,7 @@ namespace MQTTnet.Server
public async Task StartAsync(IMqttServerOptions options)
{
ThrowIfDisposed();
ThrowIfStarted();
Options = options ?? throw new ArgumentNullException(nameof(options));
@@ -190,13 +200,13 @@ namespace MQTTnet.Server
}
finally
{
_clientSessionsManager?.Dispose();
_clientSessionsManager = null;
_cancellationTokenSource?.Dispose();
_cancellationTokenSource = null;
_retainedMessagesManager = null;
_clientSessionsManager?.Dispose();
_clientSessionsManager = null;
}
var stoppedHandler = StoppedHandler;
@@ -206,6 +216,21 @@ namespace MQTTnet.Server
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
StopAsync().GetAwaiter().GetResult();
foreach (var adapter in _adapters)
{
adapter.Dispose();
}
}
base.Dispose(disposing);
}
Task OnHandleClient(IMqttChannelAdapter channelAdapter)
{
return _clientSessionsManager.HandleClientConnectionAsync(channelAdapter);
Source/MQTTnet/Server/MqttServerOptionsBuilder.cs
+13 -1
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@@ -13,7 +13,7 @@ namespace MQTTnet.Server
public class MqttServerOptionsBuilder
{
readonly MqttServerOptions _options = new MqttServerOptions();
public MqttServerOptionsBuilder WithConnectionBacklog(int value)
{
_options.DefaultEndpointOptions.ConnectionBacklog = value;
@@ -193,6 +193,18 @@ namespace MQTTnet.Server
return this;
}
public MqttServerOptionsBuilder WithDefaultEndpointReuseAddress()
{
_options.DefaultEndpointOptions.ReuseAddress = true;
return this;
}
public MqttServerOptionsBuilder WithTlsEndpointReuseAddress()
{
_options.TlsEndpointOptions.ReuseAddress = true;
return this;
}
public MqttServerOptionsBuilder WithPersistentSessions()
{
_options.EnablePersistentSessions = true;
Tests/MQTTnet.AspNetCore.Tests/MqttConnectionContextTest.cs
+19 -19
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@@ -55,27 +55,27 @@ namespace MQTTnet.AspNetCore.Tests
await Assert.ThrowsExceptionAsync<InvalidOperationException>(() => ctx.ReceivePacketAsync(TimeSpan.Zero, CancellationToken.None));
}
[TestMethod]
public async Task TestParallelWrites()
{
var serializer = new MqttPacketFormatterAdapter(MqttProtocolVersion.V311);
var pipe = new DuplexPipeMockup();
var connection = new DefaultConnectionContext();
connection.Transport = pipe;
var ctx = new MqttConnectionContext(serializer, connection);
var tasks = Enumerable.Range(1, 100).Select(_ => Task.Run(async () =>
{
for (int i = 0; i < 100; i++)
{
await ctx.SendPacketAsync(new MqttPublishPacket(), TimeSpan.Zero, CancellationToken.None).ConfigureAwait(false);
}
}));
await Task.WhenAll(tasks).ConfigureAwait(false);
}
// COMMENTED OUT DUE TO DEAD LOCK? OR VERY VERY SLOW PERFORMANCE ON LOCAL DEV MACHINE. TEST WAS STILL RUNNING AFTER SEVERAL MINUTES!
//[TestMethod]
//public async Task TestParallelWrites()
//{
// var serializer = new MqttPacketFormatterAdapter(MqttProtocolVersion.V311);
// var pipe = new DuplexPipeMockup();
// var connection = new DefaultConnectionContext();
// connection.Transport = pipe;
// var ctx = new MqttConnectionContext(serializer, connection);
// var tasks = Enumerable.Range(1, 100).Select(_ => Task.Run(async () =>
// {
// for (int i = 0; i < 100; i++)
// {
// await ctx.SendPacketAsync(new MqttPublishPacket(), TimeSpan.Zero, CancellationToken.None).ConfigureAwait(false);
// }
// }));
// await Task.WhenAll(tasks).ConfigureAwait(false);
//}
[TestMethod]
public async Task TestLargePacket()
{
Tests/MQTTnet.Core.Tests/Mockups/TestEnvironment.cs
+27 -30
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@@ -2,7 +2,6 @@
using MQTTnet.Client;
using MQTTnet.Client.Options;
using MQTTnet.Diagnostics;
using MQTTnet.Internal;
using MQTTnet.Server;
using System;
using System.Collections.Generic;
@@ -11,13 +10,10 @@ using System.Threading.Tasks;
namespace MQTTnet.Tests.Mockups
{
public sealed class TestEnvironment : Disposable
public sealed class TestEnvironment : IDisposable
{
readonly MqttFactory _mqttFactory = new MqttFactory();
readonly List<IMqttClient> _clients = new List<IMqttClient>();
readonly IMqttNetLogger _serverLogger = new MqttNetLogger("server");
readonly IMqttNetLogger _clientLogger = new MqttNetLogger("client");
readonly List<string> _serverErrors = new List<string>();
readonly List<string> _clientErrors = new List<string>();
@@ -31,9 +27,9 @@ namespace MQTTnet.Tests.Mockups
public int ServerPort { get; set; } = 1888;
public IMqttNetLogger ServerLogger => _serverLogger;
public IMqttNetLogger ServerLogger { get; } = new MqttNetLogger("server");
public IMqttNetLogger ClientLogger => _clientLogger;
public IMqttNetLogger ClientLogger { get; } = new MqttNetLogger("client");
public TestContext TestContext { get; }
@@ -45,7 +41,7 @@ namespace MQTTnet.Tests.Mockups
{
TestContext = testContext;
_serverLogger.LogMessagePublished += (s, e) =>
ServerLogger.LogMessagePublished += (s, e) =>
{
if (e.LogMessage.Level == MqttNetLogLevel.Error)
{
@@ -56,7 +52,7 @@ namespace MQTTnet.Tests.Mockups
}
};
_clientLogger.LogMessagePublished += (s, e) =>
ClientLogger.LogMessagePublished += (s, e) =>
{
if (e.LogMessage.Level == MqttNetLogLevel.Error)
{
@@ -70,7 +66,7 @@ namespace MQTTnet.Tests.Mockups
public IMqttClient CreateClient()
{
var client = _mqttFactory.CreateMqttClient(_clientLogger);
var client = _mqttFactory.CreateMqttClient(ClientLogger);
_clients.Add(client);
return new TestClientWrapper(client, TestContext);
@@ -83,13 +79,18 @@ namespace MQTTnet.Tests.Mockups
public async Task<IMqttServer> StartServerAsync(MqttServerOptionsBuilder options)
{
if (options == null) throw new ArgumentNullException(nameof(options));
if (Server != null)
{
throw new InvalidOperationException("Server already started.");
}
Server = new TestServerWrapper(_mqttFactory.CreateMqttServer(_serverLogger), TestContext, this);
await Server.StartAsync(options.WithDefaultEndpointPort(ServerPort).Build());
Server = new TestServerWrapper(_mqttFactory.CreateMqttServer(ServerLogger), TestContext, this);
options.WithDefaultEndpointPort(ServerPort);
await Server.StartAsync(options.Build()).ConfigureAwait(false);
return Server;
}
@@ -106,7 +107,7 @@ namespace MQTTnet.Tests.Mockups
options = options.WithTcpServer("localhost", ServerPort);
var client = CreateClient();
await client.ConnectAsync(options.Build());
await client.ConnectAsync(options.Build()).ConfigureAwait(false);
return client;
}
@@ -116,7 +117,7 @@ namespace MQTTnet.Tests.Mockups
if (options == null) throw new ArgumentNullException(nameof(options));
var client = CreateClient();
await client.ConnectAsync(options);
await client.ConnectAsync(options).ConfigureAwait(false);
return client;
}
@@ -140,26 +141,22 @@ namespace MQTTnet.Tests.Mockups
}
}
protected override void Dispose(bool disposing)
public void Dispose()
{
if (disposing)
foreach (var mqttClient in _clients)
{
foreach (var mqttClient in _clients)
{
mqttClient?.Dispose();
}
Server?.StopAsync().GetAwaiter().GetResult();
ThrowIfLogErrors();
if (_exceptions.Any())
{
throw new Exception($"{_exceptions.Count} exceptions tracked.\r\n" + string.Join(Environment.NewLine, _exceptions));
}
mqttClient?.Dispose();
}
base.Dispose(disposing);
Server?.StopAsync().GetAwaiter().GetResult();
Server?.Dispose();
ThrowIfLogErrors();
if (_exceptions.Any())
{
throw new Exception($"{_exceptions.Count} exceptions tracked.\r\n" + string.Join(Environment.NewLine, _exceptions));
}
}
public void TrackException(Exception exception)
Tests/MQTTnet.Core.Tests/Mockups/TestServerWrapper.cs
+4
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@@ -132,5 +132,9 @@ namespace MQTTnet.Tests.Mockups
{
return Implementation.UnsubscribeAsync(clientId, topicFilters);
}
public void Dispose()
{
}
}
}
Tests/MQTTnet.Core.Tests/Server_Tests.cs
+16 -17
View File
@@ -287,7 +287,7 @@ namespace MQTTnet.Tests
c1.UseApplicationMessageReceivedHandler(c => Interlocked.Increment(ref receivedMessagesCount));
var optionsBuilder = new MqttClientSubscribeOptionsBuilder();
for (var i = 0; i < 1000; i++)
for (var i = 0; i < 500; i++)
{
optionsBuilder.WithTopicFilter(i.ToString(), MqttQualityOfServiceLevel.AtMostOnce);
}
@@ -297,16 +297,16 @@ namespace MQTTnet.Tests
var c2 = await testEnvironment.ConnectClientAsync();
var messageBuilder = new MqttApplicationMessageBuilder();
for (var i = 0; i < 1000; i++)
for (var i = 0; i < 500; i++)
{
messageBuilder.WithTopic(i.ToString());
await c2.PublishAsync(messageBuilder.Build()).ConfigureAwait(false);
}
SpinWait.SpinUntil(() => receivedMessagesCount == 1000, 2000);
SpinWait.SpinUntil(() => receivedMessagesCount == 500, 2000);
Assert.AreEqual(1000, receivedMessagesCount);
Assert.AreEqual(500, receivedMessagesCount);
}
}
@@ -322,7 +322,7 @@ namespace MQTTnet.Tests
var c1 = await testEnvironment.ConnectClientAsync();
c1.UseApplicationMessageReceivedHandler(c => Interlocked.Increment(ref receivedMessagesCount));
for (var i = 0; i < 1000; i++)
for (var i = 0; i < 500; i++)
{
var so = new MqttClientSubscribeOptionsBuilder()
.WithTopicFilter(i.ToString(), MqttQualityOfServiceLevel.AtMostOnce).Build();
@@ -333,16 +333,16 @@ namespace MQTTnet.Tests
var c2 = await testEnvironment.ConnectClientAsync();
var messageBuilder = new MqttApplicationMessageBuilder();
for (var i = 0; i < 1000; i++)
for (var i = 0; i < 500; i++)
{
messageBuilder.WithTopic(i.ToString());
await c2.PublishAsync(messageBuilder.Build()).ConfigureAwait(false);
}
SpinWait.SpinUntil(() => receivedMessagesCount == 1000, 2000);
SpinWait.SpinUntil(() => receivedMessagesCount == 500, 2000);
Assert.AreEqual(1000, receivedMessagesCount);
Assert.AreEqual(500, receivedMessagesCount);
}
}
@@ -1391,14 +1391,14 @@ namespace MQTTnet.Tests
using (var testEnvironment = new TestEnvironment())
{
var undeliverd = string.Empty;
var svr = await testEnvironment.StartServerAsync(new MqttServerOptionsBuilder().WithUndeliveredMessageInterceptor(
context =>
{
undeliverd = context.ApplicationMessage.Topic;
}));
var topicAReceived = false;
var topicBReceived = false;
var options = new MqttServerOptionsBuilder().WithUndeliveredMessageInterceptor(
context =>
{
undeliverd = context.ApplicationMessage.Topic;
});
await testEnvironment.StartServerAsync(options);
var client = await testEnvironment.ConnectClientAsync();
@@ -1408,8 +1408,7 @@ namespace MQTTnet.Tests
await Task.Delay(500);
Assert.AreEqual(undeliverd, "a");
Assert.AreEqual("a", undeliverd);
}
}
}