/// <summary>
///
/// </summary>
public ServerProcessing ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream,
out IMessage responseMsg, out ITransportHeaders responseHeaders, out Stream responseStream)
{
// scope state
ServerProcessing servproc = ServerProcessing.Complete;
responseMsg = null;
responseHeaders = null;
responseStream = new MemoryStream();
IMethodCallMessage mcm = null;
BinaryFormatter bf = new BinaryFormatter();
try
{
//Are we in the business?
if (_Next != null)
{
if (requestMsg == null && requestStream != null)
{
// we are supporting only binary formatter
requestMsg = (IMessage)bf.Deserialize(requestStream);
requestStream.Close();
}
mcm = requestMsg as IMethodCallMessage;
if (mcm == null)
{
throw new NullReferenceException("IMethodCallMessage after deserialization");
}
// LogicalCallContext
LCC.CopyFrom(mcm);
LogicalWorkflowContext lwc = LCC.LogicalWorkflowContext;
Guid workflowInstanceId = lwc.GetAndClearWorkflowId();
bool bGetWorkflowById = !workflowInstanceId.Equals(Guid.Empty);
// create workflow
Invoker invoker = null;
if (bGetWorkflowById)
{
invoker = WorkflowInvoker.Create(workflowInstanceId);
}
else
{
string endpoint = mcm.Uri;
if (string.IsNullOrEmpty(endpoint))
{
endpoint = requestHeaders["__RequestUri"] as string;
}
if (string.IsNullOrEmpty(endpoint))
{
throw new NullReferenceException("Internal error - missing endpoint");
}
// create workflow instance
Type workflowType = RemotingServices.GetServerTypeForUri(endpoint.TrimStart('/'));
invoker = WorkflowInvoker.Create(workflowType, lwc.WorkflowInitData);
}
// send remoting message to the workflow
invoker.SendMessage(mcm);
// handle response
if (!RemotingServices.IsOneWay(mcm.MethodBase))
{
// wait for response
invoker.WaitForResponse(_Provider.TimeOut);
object response = invoker.GetResponse <object>();
// return message back to the caller (Note that this version is not allow to change a CallContext!!)
responseMsg = (IMessage) new ReturnMessage(response, null, 0, null, mcm);
}
}
else
{
throw new RemotingException("Internal error in the channel stack");
}
}
catch (Exception ex)
{
Trace.WriteLine(ex);
responseMsg = (IMessage) new ReturnMessage(ex, mcm);
}
finally
{
responseHeaders = requestHeaders;
if (responseMsg != null)
{
// serialize response to the wire transport
bf.Serialize(responseStream, responseMsg);
responseStream.Position = 0;
}
}
return(servproc);
}
