private IEnumerable <string> Send(string responseReceiverId, object serializedMessage)
{
using (EneterTrace.Entering())
{
if (AttachedDuplexInputChannel == null)
{
string anErrorMessage = TracedObject + "failed to send the message because the it is not attached to duplex input channel.";
EneterTrace.Error(anErrorMessage);
throw new InvalidOperationException(anErrorMessage);
}
try
{
AttachedDuplexInputChannel.SendResponseMessage(responseReceiverId, serializedMessage);
}
catch (Exception err)
{
EneterTrace.Error(TracedObject + "failed to send the message. The client will be disconnected and unsubscribed from all messages.", err);
try
{
// Try to disconnect the client.
AttachedDuplexInputChannel.DisconnectResponseReceiver(responseReceiverId);
}
catch
{
}
// Unsubscribe the failed client.
return(Unsubscribe(responseReceiverId, null));
}
return(new string[0]);
}
}
protected override void OnRequestMessageReceived(object sender, DuplexChannelMessageEventArgs e)
{
using (EneterTrace.Entering())
{
// Try to deserialize the message.
BrokerMessage aBrokerMessage;
try
{
aBrokerMessage = mySerializer.ForResponseReceiver(e.ResponseReceiverId).Deserialize <BrokerMessage>(e.Message);
}
catch (Exception err)
{
EneterTrace.Error(TracedObject + "failed to deserialize the message.", err);
return;
}
if (myValidateBrokerRequestCallback != null)
{
bool isValidated = false;
try
{
isValidated = myValidateBrokerRequestCallback(e.ResponseReceiverId, aBrokerMessage);
}
catch (Exception err)
{
EneterTrace.Error(TracedObject + ErrorHandler.DetectedException, err);
}
if (!isValidated)
{
IEnumerable <string> anUnsubscribedMessages = Unsubscribe(e.ResponseReceiverId, null);
RaiseClientUnsubscribed(e.ResponseReceiverId, anUnsubscribedMessages);
try
{
AttachedDuplexInputChannel.DisconnectResponseReceiver(e.ResponseReceiverId);
}
catch (Exception err)
{
EneterTrace.Warning(TracedObject + "failed to disconnect response receiver.", err);
}
return;
}
}
if (aBrokerMessage.Request == EBrokerRequest.Publish)
{
if (mySerializer.IsSameForAllResponseReceivers())
{
// If only one serializer is used for communication with all clients then
// increase the performance by reusing already serialized message.
Publish(e.ResponseReceiverId, aBrokerMessage, e.Message);
}
else
{
// If there is a serializer per client then the message must be serialized
// individually for each subscribed client.
Publish(e.ResponseReceiverId, aBrokerMessage, null);
}
}
else if (aBrokerMessage.Request == EBrokerRequest.Subscribe)
{
Subscribe(e.ResponseReceiverId, aBrokerMessage.MessageTypes);
}
else if (aBrokerMessage.Request == EBrokerRequest.Unsubscribe)
{
IEnumerable <string> anUnsubscribedMessages = Unsubscribe(e.ResponseReceiverId, aBrokerMessage.MessageTypes);
RaiseClientUnsubscribed(e.ResponseReceiverId, anUnsubscribedMessages);
}
else if (aBrokerMessage.Request == EBrokerRequest.UnsubscribeAll)
{
IEnumerable <string> anUnsubscribedMessages = Unsubscribe(e.ResponseReceiverId, null);
RaiseClientUnsubscribed(e.ResponseReceiverId, anUnsubscribedMessages);
}
}
}
