//******************************************************************************************************//  JsonFaultHandler.cs - Gbtc////  Copyright © 2016, Grid Protection Alliance.  All Rights Reserved.////  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See//  the NOTICE file distributed with this work for additional information regarding copyright ownership.//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this//  file except in compliance with the License. You may obtain a copy of the License at:////      http://opensource.org/licenses/MIT////  Unless agreed to in writing, the subject software distributed under the License is distributed on an//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the//  License for the specific language governing permissions and limitations.////  Code Modification History://  ----------------------------------------------------------------------------------------------------//  09/28/2016 - Ritchie Carroll//       Generated original version of source code.////****************************************************************************************************** using System;using System.Net;using System.Runtime.Serialization.Json;using System.ServiceModel;using System.ServiceModel.Channels;using System.ServiceModel.Dispatcher; namespace GSF.ServiceModel{    /// <summary>    /// Creates an error handler for encoding errors as JSON responses.    /// </summary>    public class JsonFaultHandler : IErrorHandler    {        /// <summary>        /// Enables error-related processing and returns a value that indicates whether the dispatcher aborts the session and the instance context in certain cases.        /// </summary>        /// <returns>true if Windows Communication Foundation (WCF) should not abort the session (if there is one) and instance context if the instance context is not <see cref="InstanceContextMode.Single" />; otherwise, false. The default is false.</returns>        /// <param name="error">The exception thrown during processing.</param>        public bool HandleError(Exception error)        {            return true;        }         /// <summary>        /// Enables the creation of a custom <see cref="FaultException" /> that is returned from an exception in the course of a service method.        /// </summary>        /// <param name="error">The <see cref="Exception" /> object thrown in the course of the service operation.</param>        /// <param name="version">The SOAP version of the message.</param>        /// <param name="fault">The <see cref="Message" /> object that is returned to the client, or service, in the duplex case.</param>        public void ProvideFault(Exception error, MessageVersion version, ref Message fault)        {            fault = Message.CreateMessage(version, "", new JsonFault(error), new DataContractJsonSerializer(typeof(JsonFault)));             WebBodyFormatMessageProperty jsonFormatting = new WebBodyFormatMessageProperty(WebContentFormat.Json);            fault.Properties.Add(WebBodyFormatMessageProperty.Name, jsonFormatting);             HttpResponseMessageProperty httpResponse = new HttpResponseMessageProperty            {                StatusCode = HttpStatusCode.InternalServerError,                StatusDescription = error.Message,            };             fault.Properties.Add(HttpResponseMessageProperty.Name, httpResponse);        }    }}