bool StartProcessing()
{
bool callAgain = false;
SendOperation sendOperation = this.messageRpc.Operations[0];
this.currentClient = this.service.GetOrCreateClient <TContract>(sendOperation.CurrentEndpoint, this.messageRpc.Impersonating);
if (TD.RoutingServiceTransmittingMessageIsEnabled())
{
TD.RoutingServiceTransmittingMessage(this.messageRpc.EventTraceActivity, this.messageRpc.UniqueID, "0", this.currentClient.Key.ToString());
}
try
{
if (messageRpc.Transaction != null && sendOperation.HasAlternate)
{
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.ErrorHandlingNotSupportedReqReplyTxn(this.messageRpc.OperationContext.Channel.LocalAddress)));
}
// We always work on cloned message when there are backup endpoints to handle exception cases
Message message;
if (sendOperation.AlternateEndpointCount > 0)
{
message = messageRpc.CreateBuffer().CreateMessage();
}
else
{
message = messageRpc.Message;
}
sendOperation.PrepareMessage(message);
IAsyncResult result = null;
using (this.PrepareTransactionalCall(messageRpc.Transaction))
{
IDisposable impersonationContext = null;
try
{
//Perform the assignment in a finally block so it won't be interrupted asynchronously
try { }
finally
{
impersonationContext = messageRpc.PrepareCall();
}
result = this.currentClient.BeginOperation(message, messageRpc.Transaction, this.PrepareAsyncCompletion(operationCallback), this);
}
finally
{
if (impersonationContext != null)
{
impersonationContext.Dispose();
}
}
}
if (this.CheckSyncContinue(result))
{
if (this.OperationComplete(result))
{
this.Complete(this.allCompletedSync);
}
else
{
callAgain = true;
}
}
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
if (!this.HandleClientOperationFailure(exception))
{
throw;
}
callAgain = true;
}
return(callAgain);
}
bool SendToCurrentClient()
{
MessageRpc messageRpc = this.service.SessionMessages[this.sessionMessageIndex];
SendOperation sendOperation = messageRpc.Operations[this.destinationIndex];
if (sendOperation.Sent)
{
this.MoveToNextClientOperation(messageRpc.Operations.Count);
return(true);
}
else if (!this.channelExtension.ReceiveContextEnabled &&
this.channelExtension.TransactedReceiveEnabled &&
sendOperation.HasAlternate)
{
// We can't do error handling for oneway Transactional unless there's RC.
throw FxTrace.Exception.AsError(new ConfigurationErrorsException(SR.ErrorHandlingNotSupportedTxNoRC(messageRpc.OperationContext.Channel.LocalAddress)));
}
RoutingEndpointTrait endpointTrait = sendOperation.CurrentEndpoint;
this.client = this.service.GetOrCreateClient <TContract>(endpointTrait, messageRpc.Impersonating);
try
{
// We always work on cloned message when there are backup endpoints to handle exception cases
Message message;
if (messageRpc.Operations.Count == 1 && sendOperation.AlternateEndpointCount == 0)
{
message = messageRpc.Message;
}
else
{
message = messageRpc.CreateBuffer().CreateMessage();
}
sendOperation.PrepareMessage(message);
IAsyncResult result;
if (TD.RoutingServiceTransmittingMessageIsEnabled())
{
TD.RoutingServiceTransmittingMessage(messageRpc.EventTraceActivity, messageRpc.UniqueID, this.destinationIndex.ToString(TD.Culture), this.client.Key.ToString());
}
Transaction transaction = this.service.GetTransactionForSending(messageRpc);
using (this.PrepareTransactionalCall(transaction))
{
IDisposable impersonationContext = null;
try
{
//Perform the assignment in a finally block so it won't be interrupted asynchronously
try { }
finally
{
impersonationContext = messageRpc.PrepareCall();
}
result = this.client.BeginOperation(message, transaction, this.PrepareAsyncCompletion(clientOperationCallback), this);
}
finally
{
if (impersonationContext != null)
{
impersonationContext.Dispose();
}
}
}
if (this.CheckSyncContinue(result))
{
this.ClientOperationComplete(result);
return(true);
}
else
{
return(false);
}
}
catch (Exception exception)
{
if (Fx.IsFatal(exception))
{
throw;
}
//See if we can handle this Exception...
if (this.HandleClientOperationFailure(exception))
{
return(true);
}
throw;
}
}