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1546 possible bug in server repeatedly sending the same message to client subscribed with cleansession=false (#1569)

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Christian
2022-11-11 08:14:15 +01:00
committed by GitHub
parent bfec9dc5ad
commit db1fc7625d
18 changed files with 475 additions and 172 deletions
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Source/MQTTnet.Tests/Client/ManagedMqttClient_Tests.cs
+60 -1
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@@ -11,6 +11,7 @@ using Microsoft.VisualStudio.TestTools.UnitTesting;
using MQTTnet.Client;
using MQTTnet.Diagnostics;
using MQTTnet.Extensions.ManagedClient;
using MQTTnet.Formatter;
using MQTTnet.Internal;
using MQTTnet.Protocol;
using MQTTnet.Server;
@@ -21,6 +22,65 @@ namespace MQTTnet.Tests.Client
[TestClass]
public sealed class ManagedMqttClient_Tests : BaseTestClass
{
[TestMethod]
public async Task Receive_While_Not_Cleanly_Disconnected()
{
using (var testEnvironment = CreateTestEnvironment(MqttProtocolVersion.V500))
{
await testEnvironment.StartServer(o => o.WithPersistentSessions());
var senderClient = await testEnvironment.ConnectClient();
// Prepare managed client.
var managedClient = testEnvironment.Factory.CreateManagedMqttClient();
await managedClient.SubscribeAsync("#");
var receivedMessages = testEnvironment.CreateApplicationMessageHandler(managedClient);
var managedClientOptions = new ManagedMqttClientOptions
{
ClientOptions = testEnvironment.Factory.CreateClientOptionsBuilder()
.WithTcpServer("127.0.0.1", testEnvironment.ServerPort)
.WithClientId(nameof(Receive_While_Not_Cleanly_Disconnected) + "_managed")
.WithCleanSession(false)
.Build()
};
await managedClient.StartAsync(managedClientOptions);
await LongTestDelay();
// Send test data.
await senderClient.PublishStringAsync("topic1");
await LongTestDelay();
receivedMessages.AssertReceivedCountEquals(1);
// Stop the managed client but keep session at server (not clean disconnect required).
await managedClient.StopAsync(false);
await LongTestDelay();
// Send new messages in the meantime.
await senderClient.PublishStringAsync("topic2", qualityOfServiceLevel: MqttQualityOfServiceLevel.ExactlyOnce);
await LongTestDelay();
// Start the managed client, it should receive the new message.
await managedClient.StartAsync(managedClientOptions);
await LongTestDelay();
receivedMessages.AssertReceivedCountEquals(2);
// Stop and start again, no new message should be received.
for (var i = 0; i < 3; i++)
{
await managedClient.StopAsync(false);
await LongTestDelay();
await managedClient.StartAsync(managedClientOptions);
await LongTestDelay();
}
receivedMessages.AssertReceivedCountEquals(2);
}
}
[TestMethod]
public async Task Connect_To_Invalid_Server()
{
@@ -33,7 +93,6 @@ namespace MQTTnet.Tests.Client
var managedClient = testEnvironment.Factory.CreateManagedMqttClient(mqttClient);
ConnectingFailedEventArgs connectingFailedEventArgs = null;
managedClient.ConnectingFailedAsync += args =>
{
connectingFailedEventArgs = args;