ErrorProcessingHandler.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » Dispatcher » C# / CSharp Open Source

using System;
using System.Collections.Generic;
using System.Text;
using System.ServiceModel.Channels;
using System.ServiceModel;

namespace System.ServiceModel.Dispatcher{
  internal class ErrorProcessingHandler : BaseRequestProcessorHandler
  {
    public ErrorProcessingHandler (IChannel channel)
    {
      duplex = channel as IDuplexChannel;
    }

    IDuplexChannel duplex;

    protected override bool ProcessRequest (MessageProcessingContext mrc)
    {
      Exception ex = mrc.ProcessingException;
      DispatchRuntime dispatchRuntime = mrc.OperationContext.EndpointDispatcher.DispatchRuntime;
      
      //invoke all user handlers
      ChannelDispatcher channelDispatcher = dispatchRuntime.ChannelDispatcher;
      foreach (IErrorHandler handler in channelDispatcher.ErrorHandlers)
        if (handler.HandleError (ex))
          break;

      // FIXME: remove them. FaultConverter also covers errors like EndpointNotFoundException, which this handler never covers. And checking converter twice is extraneous, so this part is just extraneous.
      // FIXME: actually everything is done in OperationInvokerHandler now...
      FaultConverter fc = FaultConverter.GetDefaultFaultConverter (dispatchRuntime.ChannelDispatcher.MessageVersion);
      Message res = null;      
      if (!fc.TryCreateFaultMessage (ex, out res))
        throw ex;
      mrc.ReplyMessage = res;

      if (duplex != null)
        mrc.Reply (duplex, true);
      else
        mrc.Reply (true);
      return false;
    }    
  }
}