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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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This commit is contained in:
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/Client/MqttClientExtensions.cs
+31 -20
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@@ -14,26 +14,6 @@ namespace MQTTnet.Client
{
public static class MqttClientExtensions
{
public static async Task<bool> TryPingAsync(this IMqttClient client, CancellationToken cancellationToken = default)
{
if (client == null)
{
throw new ArgumentNullException(nameof(client));
}
try
{
await client.PingAsync(cancellationToken).ConfigureAwait(false);
return true;
}
catch
{
// Ignore errors.
}
return false;
}
public static Task DisconnectAsync(this IMqttClient client, MqttClientDisconnectReason reason = MqttClientDisconnectReason.NormalDisconnection, string reasonString = null)
{
if (client == null)
@@ -89,6 +69,17 @@ namespace MQTTnet.Client
return mqttClient.PublishBinaryAsync(topic, payloadBuffer, qualityOfServiceLevel, retain, cancellationToken);
}
public static Task ReconnectAsync(this IMqttClient client, CancellationToken cancellationToken = default)
{
if (client.Options == null)
{
throw new InvalidOperationException(
"The MQTT client was not connected before. A reconnect is only permitted when the client was already connected or at least tried to.");
}
return client.ConnectAsync(client.Options, cancellationToken);
}
public static Task SendExtendedAuthenticationExchangeDataAsync(this IMqttClient client, MqttExtendedAuthenticationExchangeData data)
{
if (client == null)
@@ -137,6 +128,26 @@ namespace MQTTnet.Client
return mqttClient.SubscribeAsync(subscribeOptions, cancellationToken);
}
public static async Task<bool> TryPingAsync(this IMqttClient client, CancellationToken cancellationToken = default)
{
if (client == null)
{
throw new ArgumentNullException(nameof(client));
}
try
{
await client.PingAsync(cancellationToken).ConfigureAwait(false);
return true;
}
catch
{
// Ignore errors.
}
return false;
}
public static Task<MqttClientUnsubscribeResult> UnsubscribeAsync(this IMqttClient mqttClient, string topic, CancellationToken cancellationToken = default)
{
if (mqttClient == null)