/// <summary>
/// Handle command message: a clinet ping.
/// </summary>
private AmfGenericMessage HandleClientPing(AmfGenericMessage request, CommandMessage message)
{
var acknowledge = AmfOperationUtil.BuildAcknowledgeMessage(message);
acknowledge.Headers = new Dictionary<string, object>
{
{CommandMessageHeader.MessagingVersion, Capabilities.MessagingVersion}
};
return AmfOperationUtil.BuildMessageReply(request, acknowledge);
}
/// <summary>
/// Build a message reply.
/// </summary>
/// <param name="request">Request message.</param>
/// <param name="body">Reply message's body.</param>
public static AmfGenericMessage BuildMessageReply(AmfGenericMessage request, object body)
{
var replyHeaders = new Dictionary<string, AmfHeader>();
var replyMessage = new AmfMessage
{
Target = CreateResultReplyTarget(request.AmfMessage),
Response = string.Empty,
Data = body
};
return new AmfGenericMessage(replyHeaders, replyMessage);
}
/// <summary>
/// Process an AMF command request.
/// </summary>
/// <param name="request">Request message to process.</param>
/// <returns>Service reply message.</returns>
protected AmfGenericMessage ProcessCommand(AmfGenericMessage request)
{
var command = (CommandMessage)request.AmfMessage.Data;
Func<AmfGenericMessage, CommandMessage, AmfGenericMessage> handler;
switch (command.Operation)
{
case CommandMessageOperation.ClientPing:
handler = HandleClientPing;
break;
default:
throw new NotSupportedException(string.Format(Errors.AmfCommandInvoker_ProcessCommand_OperationNotSupported, command.Operation));
}
return handler.Invoke(request, command);
}
public void ProvideFault(Exception error, MessageVersion version, ref Message fault)
{
//An internal server error occured
if (OperationContext.Current == null) return;
//An AMF operation
if (OperationContext.Current.IncomingMessageProperties.ContainsKey(MessagingHeaders.InvokerMessageBody))
{
var replyHeaders = new Dictionary<string, AmfHeader>();
var replyMessage = new AmfMessage { Response = string.Empty };
var requestMessage = (AmfMessage)OperationContext.Current.IncomingMessageProperties[MessagingHeaders.InvokerMessageBody];
//An RPC operation
if (OperationContext.Current.IncomingMessageProperties.ContainsKey(MessagingHeaders.RemotingMessage))
{
var rpcMessage = (RemotingMessage)OperationContext.Current.IncomingMessageProperties[MessagingHeaders.RemotingMessage];
var acknowledge = AmfOperationUtil.BuildErrorMessage(rpcMessage);
if (acknowledge.Headers == null) acknowledge.Headers = new Dictionary<string, object>();
if (error is AmfOperationNotFoundException)
acknowledge.Headers[AmfMessageHeader.StatusCode] = (int)HttpStatusCode.NotFound;
else
acknowledge.Headers[AmfMessageHeader.StatusCode] = (int)HttpStatusCode.BadRequest;
acknowledge.FaultCode = ErrorMessageFaultCode.DeliveryInDoubt;
acknowledge.FaultString = error.Message;
if (_capabilities.ExceptionDetailInFaults)
{
acknowledge.FaultDetail = error.StackTrace;
}
//Get FaultException's detail object, if any
if(error is FaultException)
{
var type = error.GetType();
if (type.IsGenericType && type.GetGenericTypeDefinition().Equals(typeof(FaultException<>)))
{
acknowledge.ExtendedData = type.GetProperty("Detail").GetValue(error, null);
}
}
replyMessage.Target = AmfOperationUtil.CreateStatusReplyTarget(requestMessage);
replyMessage.Data = acknowledge;
}
fault = new AmfGenericMessage(replyHeaders, replyMessage);
}
}
/// <summary>
/// Deserializes a message into an array of parameters.
/// </summary>
/// <param name="message">The incoming message.</param>
/// <param name="parameters">The objects that are passed to the operation as parameters.</param>
public virtual void DeserializeRequest(Message message, object[] parameters)
{
var request = (AmfGenericMessage)message;
parameters[0] = new AmfGenericMessage(request.AmfHeaders, request.AmfMessage); //Use space allocated for one AmfGenericMessage
}
/// <summary>
/// Selects the service operation to call.
/// </summary>
/// <param name="message">The <c>Message</c> object sent to invoke a service operation.</param>
/// <returns>The name of the service operation to call.</returns>
public string SelectOperation(ref Message message)
{
AmfPacket packet;
//Read AMF packet from the message
try
{
packet = message.GetBody<AmfPacket>(_context.AmfSerializer);
}
finally
{
message.Close();
}
//Batch request
if (packet.Messages.Count > 1)
{
message = new AmfBatchMessage(packet.Headers, packet.Messages);
return AmfOperationKind.Batch;
}
//Regular request
var amfMessage = new AmfGenericMessage(packet.Headers, packet.Messages[0]);
message = amfMessage;
//Check if it is a Flex message.
//Due to the nature of NetConnection.call(), RPC arguments
//are sent in an array. But in case of AMFX, an array is not used
//if there is only one argument.
var arraybody = amfMessage.AmfMessage.Data as object[];
AbstractMessage flexmessage;
if (arraybody != null && arraybody.Length > 0)
flexmessage = arraybody[0] as AbstractMessage;
else
flexmessage = amfMessage.AmfMessage.Data as AbstractMessage;
//It is a Flex message after all
if (flexmessage != null)
{
amfMessage.AmfMessage.Data = flexmessage;
var type = flexmessage.GetType();
//An RPC operation
if (type == typeof(RemotingMessage))
{
var operation = ((RemotingMessage)flexmessage).Operation;
return EndpointHasOperation(_context.ServiceEndpoint, operation)
? operation
: AmfOperationKind.Fault;
}
//A Flex command message
if (type == typeof(CommandMessage))
{
return AmfOperationKind.Command;
}
}
//If it's not a Flex message, then do it the old way
return EndpointHasOperation(_context.ServiceEndpoint, amfMessage.AmfMessage.Target)
? amfMessage.AmfMessage.Target
: AmfOperationKind.Fault;
}
