75 lines
3.0 KiB
C#
75 lines
3.0 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.ServiceModel.ComIntegration
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{
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Runtime;
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using System.Runtime.InteropServices;
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using System.Runtime.Remoting;
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using System.Runtime.Remoting.Messaging;
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using System.Runtime.Remoting.Proxies;
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using System.ServiceModel;
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class TearOffProxy : RealProxy, IDisposable
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{
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ICreateServiceChannel serviceChannelCreator;
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Dictionary<MethodBase, MethodBase> baseTypeToInterfaceMethod;
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internal TearOffProxy(ICreateServiceChannel serviceChannelCreator, Type proxiedType)
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: base(proxiedType)
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{
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if (serviceChannelCreator == null)
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{
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throw Fx.AssertAndThrow("ServiceChannelCreator cannot be null");
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}
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this.serviceChannelCreator = serviceChannelCreator;
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baseTypeToInterfaceMethod = new Dictionary<MethodBase, MethodBase>();
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}
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public override IMessage Invoke(IMessage message)
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{
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RealProxy delegatingProxy = null;
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IMethodCallMessage msg = message as IMethodCallMessage;
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try
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{
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delegatingProxy = serviceChannelCreator.CreateChannel();
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}
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catch (Exception e)
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{
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if (Fx.IsFatal(e))
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throw;
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return new ReturnMessage(DiagnosticUtility.ExceptionUtility.ThrowHelperError(new COMException(e.GetBaseException().Message, Marshal.GetHRForException(e.GetBaseException()))), msg);
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}
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MethodBase typeMethod = msg.MethodBase;
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IRemotingTypeInfo typeInfo = delegatingProxy as IRemotingTypeInfo;
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if (typeInfo == null)
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{
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throw Fx.AssertAndThrow("Type Info cannot be null");
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}
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if (typeInfo.CanCastTo(typeMethod.DeclaringType, null))
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{
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IMessage msgReturned = delegatingProxy.Invoke(message);
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ReturnMessage returnMsg = msgReturned as ReturnMessage;
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if ((returnMsg == null) || (returnMsg.Exception == null))
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return msgReturned;
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else
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return new ReturnMessage(DiagnosticUtility.ExceptionUtility.ThrowHelperError(new COMException(returnMsg.Exception.GetBaseException().Message, Marshal.GetHRForException(returnMsg.Exception.GetBaseException()))), msg);
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}
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else
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{
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return new ReturnMessage(DiagnosticUtility.ExceptionUtility.ThrowHelperError(new COMException(SR.GetString(SR.OperationNotFound, typeMethod.Name), HR.DISP_E_UNKNOWNNAME)), msg);
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}
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}
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void IDisposable.Dispose()
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{
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serviceChannelCreator = null;
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}
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}
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}
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