OuterProxyWrapper.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / ComIntegration / OuterProxyWrapper.cs / 1 / OuterProxyWrapper.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.ComIntegration
{ 
    using System;
    using System.Runtime.InteropServices; 
    using Microsoft.Win32; 
    using System.Reflection;
    using System.Collections.Generic; 
    using System.Threading;
    using System.ServiceModel.Channels;

    internal class ProxySupportWrapper 
    {
        internal delegate int DelegateDllGetClassObject([In, MarshalAs(UnmanagedType.LPStruct)] Guid clsid, [In, MarshalAs(UnmanagedType.LPStruct)] Guid iid, ref IClassFactory ppv); 
 
        const string fileName = @"ServiceMonikerSupport.dll";
        const string functionName = @"DllGetClassObject"; 

        static readonly Guid ClsidProxyInstanceProvider = new Guid("(BF0514FB-6912-4659-AD69-B727E5B7ADD4)");

        SafeLibraryHandle monikerSupportLibrary; 
        DelegateDllGetClassObject getCODelegate;
 
        internal ProxySupportWrapper() 
        {
            monikerSupportLibrary = null; 
            getCODelegate = null;
        }

        ~ProxySupportWrapper() 
        {
            if (null != monikerSupportLibrary) 
            { 
                monikerSupportLibrary.Close();
                monikerSupportLibrary = null; 
            }
        }

        internal IProxyProvider GetProxyProvider() 
        {
            if (null == monikerSupportLibrary) 
            { 
                lock (this)
                { 
                    if (null == monikerSupportLibrary)
                    {
                        getCODelegate = null;
                        using (RegistryHandle regKey = RegistryHandle.GetCorrectBitnessHKLMSubkey((IntPtr.Size == 8), ServiceModelInstallStrings.WcfRegistryKey)) 
                        {
                            string file = regKey.GetStringValue(ServiceModelInstallStrings.RuntimeInstallPathName).TrimEnd('\0') + "\\" + fileName; 
#pragma warning suppress 56523 // 
                            monikerSupportLibrary = UnsafeNativeMethods.LoadLibrary(file);
                            if (monikerSupportLibrary.IsInvalid) 
                            {
                                monikerSupportLibrary.SetHandleAsInvalid();
                                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ServiceMonikerSupportLoadFailed(file));
                            } 
                        }
                    } 
                } 
            }
 
            if (null == getCODelegate)
            {
                lock (this)
                { 
                    if (null == getCODelegate)
                    { 
                        try 
                        {
                            IntPtr procaddr = UnsafeNativeMethods.GetProcAddress(monikerSupportLibrary, functionName); 
                            getCODelegate = (DelegateDllGetClassObject)Marshal.GetDelegateForFunctionPointer(procaddr, typeof(DelegateDllGetClassObject));

                        }
                        catch (Exception e) 
                        {
                            if (DiagnosticUtility.IsFatal(e)) 
                                throw; 

                            throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ComPlusProxyProviderException(SR.GetString(SR.FailedProxyProviderCreation), e)); 
                        }
                    }
                }
            } 

            IClassFactory cf = null; 
            IProxyProvider proxyProvider = null; 

            try 
            {
                getCODelegate(ClsidProxyInstanceProvider, typeof(IClassFactory).GUID, ref cf);

                proxyProvider = cf.CreateInstance(null, typeof(IProxyProvider).GUID) as IProxyProvider; 
                Thread.MemoryBarrier();
            } 
            catch (Exception e) 
            {
                if (DiagnosticUtility.IsFatal(e)) 
                    throw;

                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ComPlusProxyProviderException(SR.GetString(SR.FailedProxyProviderCreation), e));
            } 
            finally
            { 
                if (null != cf) 
                {
                    Marshal.ReleaseComObject(cf); 
                    cf = null;
                }
            }
 
            return proxyProvider;
        } 
    } 

 
     internal static class OuterProxyWrapper
     {
         static ProxySupportWrapper proxySupport = new ProxySupportWrapper();
 
          public static IntPtr CreateOuterProxyInstance (IProxyManager proxyManager, ref Guid riid)
          { 
               IntPtr pOuter = IntPtr.Zero; 
               IProxyProvider proxyProvider = proxySupport.GetProxyProvider();
 
                if (proxyProvider == null)
                {
                    DiagnosticUtility.DebugAssert("Proxy Provider cannot be NULL");
 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperInternal(true);
                } 
                Guid riid2 = riid; 
                int hr = proxyProvider.CreateOuterProxyInstance ( proxyManager, ref riid2, out pOuter);
 
                Marshal.ReleaseComObject(proxyProvider);

                if (hr != HR.S_OK)
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError (new COMException (SR.GetString (SR.FailedProxyProviderCreation), hr)); 

                return pOuter; 
 
          }
 
          public static IntPtr CreateDispatchProxy (IntPtr pOuter, IPseudoDispatch proxy)
          {
               IntPtr pInner = IntPtr.Zero;
               IProxyProvider proxyProvider = proxySupport.GetProxyProvider(); 

               if (proxyProvider == null) 
               { 
                   DiagnosticUtility.DebugAssert("Proxy Provider cannot be NULL");
 
                   throw DiagnosticUtility.ExceptionUtility.ThrowHelperInternal(true);
               }
               int hr = proxyProvider.CreateDispatchProxyInstance ( pOuter, proxy, out pInner);
 
               Marshal.ReleaseComObject(proxyProvider);
 
               if (hr != HR.S_OK) 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError (new COMException (SR.GetString (SR.FailedProxyProviderCreation), hr));
 
               return pInner;

          }
     } 

} 
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
OuterProxyWrapper.cs source code in C# .NET

Source code for the .NET framework in C#

Code:

Link Menu
