async Task <MqttPublishPacket> InvokeClientMessageQueueInterceptor(MqttPublishPacket publishPacket, MqttQueuedApplicationMessage queuedApplicationMessage)
{
if (_serverOptions.ClientMessageQueueInterceptor == null)
{
return(publishPacket);
}
var context = new MqttClientMessageQueueInterceptorContext
{
SenderClientId = queuedApplicationMessage.SenderClientId,
ReceiverClientId = ClientId,
ApplicationMessage = queuedApplicationMessage.ApplicationMessage,
SubscriptionQualityOfServiceLevel = queuedApplicationMessage.SubscriptionQualityOfServiceLevel
};
if (_serverOptions.ClientMessageQueueInterceptor != null)
{
await _serverOptions.ClientMessageQueueInterceptor.InterceptClientMessageQueueEnqueueAsync(context).ConfigureAwait(false);
}
if (!context.AcceptEnqueue || context.ApplicationMessage == null)
{
return(null);
}
publishPacket.Topic = context.ApplicationMessage.Topic;
publishPacket.Payload = context.ApplicationMessage.Payload;
publishPacket.QualityOfServiceLevel = context.SubscriptionQualityOfServiceLevel;
return(publishPacket);
}
public void EnqueueApplicationMessage(MqttClientSession senderClientSession, MqttPublishPacket publishPacket)
{
if (publishPacket == null)
{
throw new ArgumentNullException(nameof(publishPacket));
}
var checkSubscriptionsResult = _subscriptionsManager.CheckSubscriptions(publishPacket.Topic, publishPacket.QualityOfServiceLevel);
if (!checkSubscriptionsResult.IsSubscribed)
{
return;
}
publishPacket = new MqttPublishPacket
{
Topic = publishPacket.Topic,
Payload = publishPacket.Payload,
QualityOfServiceLevel = checkSubscriptionsResult.QualityOfServiceLevel,
Retain = publishPacket.Retain,
Dup = false
};
if (publishPacket.QualityOfServiceLevel > 0)
{
publishPacket.PacketIdentifier = _packetIdentifierProvider.GetNewPacketIdentifier();
}
if (_options.ClientMessageQueueInterceptor != null)
{
var context = new MqttClientMessageQueueInterceptorContext(
senderClientSession?.ClientId,
ClientId,
publishPacket.ToApplicationMessage());
_options.ClientMessageQueueInterceptor?.Invoke(context);
if (!context.AcceptEnqueue || context.ApplicationMessage == null)
{
return;
}
publishPacket.Topic = context.ApplicationMessage.Topic;
publishPacket.Payload = context.ApplicationMessage.Payload;
publishPacket.QualityOfServiceLevel = context.ApplicationMessage.QualityOfServiceLevel;
}
_pendingPacketsQueue.Enqueue(publishPacket);
}
public Task InterceptClientMessageQueueEnqueueAsync(MqttClientMessageQueueInterceptorContext context)
{
throw new System.NotImplementedException();
}
public Task InterceptClientMessageQueueEnqueueAsync(MqttClientMessageQueueInterceptorContext context)
{
return(Task.FromResult(context.AcceptEnqueue));
}