Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Net / System / Net / SecureProtocols / SslStream.cs / 2 / SslStream.cs
/*++
Copyright (c) 2003 Microsoft Corporation
Module Name:
SslStream.cs
Abstract:
A public implementation of authenticated stream using SSL protocol
Author:
Alexei Vopilov Sept 28-2003
Revision History:
--*/
namespace System.Net.Security {
using System;
using System.IO;
using System.Threading;
using System.Security.Authentication;
using System.Security.Authentication.ExtendedProtection;
using System.Security.Permissions;
using System.Security.Principal;
using System.Security.Cryptography.X509Certificates;
[Flags]
public enum SslPolicyErrors
{
None = 0x0,
RemoteCertificateNotAvailable = 0x1,
RemoteCertificateNameMismatch = 0x2,
RemoteCertificateChainErrors = 0x4
}
// A user delegate used to verify remote SSL certificate
public delegate bool RemoteCertificateValidationCallback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors);
// A user delegate used to select local SSL certificate
public delegate X509Certificate LocalCertificateSelectionCallback(object sender, string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers);
// Internal versions of the above delegates
internal delegate bool RemoteCertValidationCallback(string host, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors);
internal delegate X509Certificate LocalCertSelectionCallback(string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers);
//
//
//
public class SslStream: AuthenticatedStream
{
private SslState _SslState;
private RemoteCertificateValidationCallback _userCertificateValidationCallback;
private LocalCertificateSelectionCallback _userCertificateSelectionCallback;
private object m_RemoteCertificateOrBytes;
public SslStream(Stream innerStream)
:this(innerStream, false, null, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen)
:this(innerStream, leaveInnerStreamOpen, null, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback)
:this(innerStream, leaveInnerStreamOpen, userCertificateValidationCallback, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback)
:base(innerStream, leaveInnerStreamOpen)
{
_userCertificateValidationCallback = userCertificateValidationCallback;
_userCertificateSelectionCallback = userCertificateSelectionCallback;
RemoteCertValidationCallback _userCertValidationCallbackWrapper = new RemoteCertValidationCallback(userCertValidationCallbackWrapper);
LocalCertSelectionCallback _userCertSelectionCallbackWrapper = userCertificateSelectionCallback==null ? null : new LocalCertSelectionCallback(userCertSelectionCallbackWrapper);
_SslState = new SslState(innerStream, _userCertValidationCallbackWrapper, _userCertSelectionCallbackWrapper);
}
private bool userCertValidationCallbackWrapper(string hostName, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
m_RemoteCertificateOrBytes = certificate == null? null: certificate.GetRawCertData();
if (_userCertificateValidationCallback == null)
{
if (!_SslState.RemoteCertRequired)
sslPolicyErrors &= ~SslPolicyErrors.RemoteCertificateNotAvailable;
return (sslPolicyErrors == SslPolicyErrors.None);
}
else
return _userCertificateValidationCallback(this, certificate, chain, sslPolicyErrors);
}
private X509Certificate userCertSelectionCallbackWrapper(string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers)
{
return _userCertificateSelectionCallback(this, targetHost, localCertificates, remoteCertificate, acceptableIssuers);
}
//
// Client side auth
//
public virtual void AuthenticateAsClient(string targetHost)
{
AuthenticateAsClient(targetHost, new X509CertificateCollection(), SslProtocols.Default, false);
}
//
public virtual void AuthenticateAsClient(string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
{
_SslState.ValidateCreateContext(false, targetHost, enabledSslProtocols, null, clientCertificates, true, checkCertificateRevocation);
_SslState.ProcessAuthentication(null);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsClient(string targetHost, AsyncCallback asyncCallback, object asyncState)
{
return BeginAuthenticateAsClient(targetHost, new X509CertificateCollection(), SslProtocols.Default, false,
asyncCallback, asyncState);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsClient(string targetHost, X509CertificateCollection clientCertificates,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation,
AsyncCallback asyncCallback, object asyncState)
{
_SslState.ValidateCreateContext(false, targetHost, enabledSslProtocols, null, clientCertificates, true, checkCertificateRevocation);
LazyAsyncResult result = new LazyAsyncResult(_SslState, asyncState, asyncCallback);
_SslState.ProcessAuthentication(result);
return result;
}
//
public virtual void EndAuthenticateAsClient(IAsyncResult asyncResult)
{
_SslState.EndProcessAuthentication(asyncResult);
}
//
//
//server side auth
//
public virtual void AuthenticateAsServer(X509Certificate serverCertificate)
{
AuthenticateAsServer(serverCertificate, false, SslProtocols.Default, false);
}
//
public virtual void AuthenticateAsServer(X509Certificate serverCertificate, bool clientCertificateRequired,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
{
if (!ComNetOS.IsWin2K) {
throw new PlatformNotSupportedException(SR.GetString(SR.Win2000Required));
}
_SslState.ValidateCreateContext(true, string.Empty, enabledSslProtocols, serverCertificate, null, clientCertificateRequired, checkCertificateRevocation);
_SslState.ProcessAuthentication(null);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsServer(X509Certificate serverCertificate, AsyncCallback asyncCallback, object asyncState)
{
return BeginAuthenticateAsServer(serverCertificate, false, SslProtocols.Default, false,
asyncCallback,
asyncState);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsServer(X509Certificate serverCertificate, bool clientCertificateRequired,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation,
AsyncCallback asyncCallback,
object asyncState)
{
if (!ComNetOS.IsWin2K) {
throw new PlatformNotSupportedException(SR.GetString(SR.Win2000Required));
}
_SslState.ValidateCreateContext(true, string.Empty, enabledSslProtocols, serverCertificate, null, clientCertificateRequired, checkCertificateRevocation);
LazyAsyncResult result = new LazyAsyncResult(_SslState, asyncState, asyncCallback);
_SslState.ProcessAuthentication(result);
return result;
}
//
public virtual void EndAuthenticateAsServer(IAsyncResult asyncResult)
{
_SslState.EndProcessAuthentication(asyncResult);
}
public TransportContext TransportContext
{
get
{
return new SslStreamContext(this);
}
}
internal ChannelBinding GetChannelBinding(ChannelBindingKind kind)
{
return _SslState.GetChannelBinding(kind);
}
//
//
// Base class properties
//
public override bool IsAuthenticated {
get {
return _SslState.IsAuthenticated;
}
}
//
public override bool IsMutuallyAuthenticated {
get {
return _SslState.IsMutuallyAuthenticated;
}
}
//
public override bool IsEncrypted {
get {
return IsAuthenticated;
}
}
//
public override bool IsSigned {
get {
return IsAuthenticated;
}
}
//
public override bool IsServer {
get {
return _SslState.IsServer;
}
}
//
//
//SSL specific properties
//
//
public virtual SslProtocols SslProtocol {
get {
return _SslState.SslProtocol;
}
}
//
public virtual bool CheckCertRevocationStatus {
get {
return _SslState.CheckCertRevocationStatus;
}
}
//
public virtual X509Certificate LocalCertificate {
get {
return _SslState.LocalCertificate;
}
}
//
public virtual X509Certificate RemoteCertificate {
get {
_SslState.CheckThrow(true);
object chkCertificateOrBytes = m_RemoteCertificateOrBytes;
if (chkCertificateOrBytes != null && chkCertificateOrBytes.GetType() == typeof(byte[]))
return (X509Certificate)(m_RemoteCertificateOrBytes = new X509Certificate((byte[]) chkCertificateOrBytes));
else
return chkCertificateOrBytes as X509Certificate;
}
}
//
// More informational properties
//
public virtual CipherAlgorithmType CipherAlgorithm {
get {
return _SslState.CipherAlgorithm;
}
}
//
public virtual int CipherStrength {
get {
return _SslState.CipherStrength;
}
}
//
public virtual HashAlgorithmType HashAlgorithm {
get {
return _SslState.HashAlgorithm;
}
}
//
public virtual int HashStrength {
get {
return _SslState.HashStrength;
}
}
//
public virtual ExchangeAlgorithmType KeyExchangeAlgorithm {
get {
return _SslState.KeyExchangeAlgorithm;
}
}
//
public virtual int KeyExchangeStrength {
get {
return _SslState.KeyExchangeStrength;
}
}
//
//
// Stream contract implementation
//
//
//
public override bool CanSeek {
get {
return false;
}
}
//
public override bool CanRead {
get {
return _SslState.IsAuthenticated && InnerStream.CanRead;
}
}
//
public override bool CanTimeout {
get {
return InnerStream.CanTimeout;
}
}
//
public override bool CanWrite {
get {
return _SslState.IsAuthenticated && InnerStream.CanWrite;
}
}
//
//
public override int ReadTimeout {
get {
return InnerStream.ReadTimeout;
}
set {
InnerStream.ReadTimeout = value;
}
}
//
//
public override int WriteTimeout {
get {
return InnerStream.WriteTimeout;
}
set {
InnerStream.WriteTimeout = value;
}
}
//
public override long Length {
get {
return InnerStream.Length;
}
}
//
public override long Position {
get {
return InnerStream.Position;
}
set {
throw new NotSupportedException(SR.GetString(SR.net_noseek));
}
}
//
public override void SetLength(long value) {
InnerStream.SetLength(value);
}
//
public override long Seek(long offset, SeekOrigin origin) {
throw new NotSupportedException(SR.GetString(SR.net_noseek));
}
//
public override void Flush() {
_SslState.Flush();
}
//
//
protected override void Dispose(bool disposing) {
try {
_SslState.Close();
}
finally {
base.Dispose(disposing);
}
}
//
public override int Read(byte[] buffer, int offset, int count) {
return _SslState.SecureStream.Read(buffer, offset, count);
}
//
public void Write(byte[] buffer) {
_SslState.SecureStream.Write(buffer, 0, buffer.Length);
}
//
public override void Write(byte[] buffer, int offset, int count) {
_SslState.SecureStream.Write(buffer, offset, count);
}
//
[HostProtection(ExternalThreading=true)]
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState) {
return _SslState.SecureStream.BeginRead(buffer, offset, count, asyncCallback, asyncState);
}
//
public override int EndRead(IAsyncResult asyncResult) {
return _SslState.SecureStream.EndRead(asyncResult);
}
//
[HostProtection(ExternalThreading=true)]
public override IAsyncResult BeginWrite( byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState) {
return _SslState.SecureStream.BeginWrite(buffer, offset, count, asyncCallback, asyncState);
}
//
public override void EndWrite(IAsyncResult asyncResult) {
_SslState.SecureStream.EndWrite(asyncResult);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
/*++
Copyright (c) 2003 Microsoft Corporation
Module Name:
SslStream.cs
Abstract:
A public implementation of authenticated stream using SSL protocol
Author:
Alexei Vopilov Sept 28-2003
Revision History:
--*/
namespace System.Net.Security {
using System;
using System.IO;
using System.Threading;
using System.Security.Authentication;
using System.Security.Authentication.ExtendedProtection;
using System.Security.Permissions;
using System.Security.Principal;
using System.Security.Cryptography.X509Certificates;
[Flags]
public enum SslPolicyErrors
{
None = 0x0,
RemoteCertificateNotAvailable = 0x1,
RemoteCertificateNameMismatch = 0x2,
RemoteCertificateChainErrors = 0x4
}
// A user delegate used to verify remote SSL certificate
public delegate bool RemoteCertificateValidationCallback(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors);
// A user delegate used to select local SSL certificate
public delegate X509Certificate LocalCertificateSelectionCallback(object sender, string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers);
// Internal versions of the above delegates
internal delegate bool RemoteCertValidationCallback(string host, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors);
internal delegate X509Certificate LocalCertSelectionCallback(string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers);
//
//
//
public class SslStream: AuthenticatedStream
{
private SslState _SslState;
private RemoteCertificateValidationCallback _userCertificateValidationCallback;
private LocalCertificateSelectionCallback _userCertificateSelectionCallback;
private object m_RemoteCertificateOrBytes;
public SslStream(Stream innerStream)
:this(innerStream, false, null, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen)
:this(innerStream, leaveInnerStreamOpen, null, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback)
:this(innerStream, leaveInnerStreamOpen, userCertificateValidationCallback, null)
{
}
public SslStream(Stream innerStream, bool leaveInnerStreamOpen, RemoteCertificateValidationCallback userCertificateValidationCallback, LocalCertificateSelectionCallback userCertificateSelectionCallback)
:base(innerStream, leaveInnerStreamOpen)
{
_userCertificateValidationCallback = userCertificateValidationCallback;
_userCertificateSelectionCallback = userCertificateSelectionCallback;
RemoteCertValidationCallback _userCertValidationCallbackWrapper = new RemoteCertValidationCallback(userCertValidationCallbackWrapper);
LocalCertSelectionCallback _userCertSelectionCallbackWrapper = userCertificateSelectionCallback==null ? null : new LocalCertSelectionCallback(userCertSelectionCallbackWrapper);
_SslState = new SslState(innerStream, _userCertValidationCallbackWrapper, _userCertSelectionCallbackWrapper);
}
private bool userCertValidationCallbackWrapper(string hostName, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
m_RemoteCertificateOrBytes = certificate == null? null: certificate.GetRawCertData();
if (_userCertificateValidationCallback == null)
{
if (!_SslState.RemoteCertRequired)
sslPolicyErrors &= ~SslPolicyErrors.RemoteCertificateNotAvailable;
return (sslPolicyErrors == SslPolicyErrors.None);
}
else
return _userCertificateValidationCallback(this, certificate, chain, sslPolicyErrors);
}
private X509Certificate userCertSelectionCallbackWrapper(string targetHost, X509CertificateCollection localCertificates, X509Certificate remoteCertificate, string[] acceptableIssuers)
{
return _userCertificateSelectionCallback(this, targetHost, localCertificates, remoteCertificate, acceptableIssuers);
}
//
// Client side auth
//
public virtual void AuthenticateAsClient(string targetHost)
{
AuthenticateAsClient(targetHost, new X509CertificateCollection(), SslProtocols.Default, false);
}
//
public virtual void AuthenticateAsClient(string targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
{
_SslState.ValidateCreateContext(false, targetHost, enabledSslProtocols, null, clientCertificates, true, checkCertificateRevocation);
_SslState.ProcessAuthentication(null);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsClient(string targetHost, AsyncCallback asyncCallback, object asyncState)
{
return BeginAuthenticateAsClient(targetHost, new X509CertificateCollection(), SslProtocols.Default, false,
asyncCallback, asyncState);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsClient(string targetHost, X509CertificateCollection clientCertificates,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation,
AsyncCallback asyncCallback, object asyncState)
{
_SslState.ValidateCreateContext(false, targetHost, enabledSslProtocols, null, clientCertificates, true, checkCertificateRevocation);
LazyAsyncResult result = new LazyAsyncResult(_SslState, asyncState, asyncCallback);
_SslState.ProcessAuthentication(result);
return result;
}
//
public virtual void EndAuthenticateAsClient(IAsyncResult asyncResult)
{
_SslState.EndProcessAuthentication(asyncResult);
}
//
//
//server side auth
//
public virtual void AuthenticateAsServer(X509Certificate serverCertificate)
{
AuthenticateAsServer(serverCertificate, false, SslProtocols.Default, false);
}
//
public virtual void AuthenticateAsServer(X509Certificate serverCertificate, bool clientCertificateRequired,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation)
{
if (!ComNetOS.IsWin2K) {
throw new PlatformNotSupportedException(SR.GetString(SR.Win2000Required));
}
_SslState.ValidateCreateContext(true, string.Empty, enabledSslProtocols, serverCertificate, null, clientCertificateRequired, checkCertificateRevocation);
_SslState.ProcessAuthentication(null);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsServer(X509Certificate serverCertificate, AsyncCallback asyncCallback, object asyncState)
{
return BeginAuthenticateAsServer(serverCertificate, false, SslProtocols.Default, false,
asyncCallback,
asyncState);
}
//
[HostProtection(ExternalThreading=true)]
public virtual IAsyncResult BeginAuthenticateAsServer(X509Certificate serverCertificate, bool clientCertificateRequired,
SslProtocols enabledSslProtocols, bool checkCertificateRevocation,
AsyncCallback asyncCallback,
object asyncState)
{
if (!ComNetOS.IsWin2K) {
throw new PlatformNotSupportedException(SR.GetString(SR.Win2000Required));
}
_SslState.ValidateCreateContext(true, string.Empty, enabledSslProtocols, serverCertificate, null, clientCertificateRequired, checkCertificateRevocation);
LazyAsyncResult result = new LazyAsyncResult(_SslState, asyncState, asyncCallback);
_SslState.ProcessAuthentication(result);
return result;
}
//
public virtual void EndAuthenticateAsServer(IAsyncResult asyncResult)
{
_SslState.EndProcessAuthentication(asyncResult);
}
public TransportContext TransportContext
{
get
{
return new SslStreamContext(this);
}
}
internal ChannelBinding GetChannelBinding(ChannelBindingKind kind)
{
return _SslState.GetChannelBinding(kind);
}
//
//
// Base class properties
//
public override bool IsAuthenticated {
get {
return _SslState.IsAuthenticated;
}
}
//
public override bool IsMutuallyAuthenticated {
get {
return _SslState.IsMutuallyAuthenticated;
}
}
//
public override bool IsEncrypted {
get {
return IsAuthenticated;
}
}
//
public override bool IsSigned {
get {
return IsAuthenticated;
}
}
//
public override bool IsServer {
get {
return _SslState.IsServer;
}
}
//
//
//SSL specific properties
//
//
public virtual SslProtocols SslProtocol {
get {
return _SslState.SslProtocol;
}
}
//
public virtual bool CheckCertRevocationStatus {
get {
return _SslState.CheckCertRevocationStatus;
}
}
//
public virtual X509Certificate LocalCertificate {
get {
return _SslState.LocalCertificate;
}
}
//
public virtual X509Certificate RemoteCertificate {
get {
_SslState.CheckThrow(true);
object chkCertificateOrBytes = m_RemoteCertificateOrBytes;
if (chkCertificateOrBytes != null && chkCertificateOrBytes.GetType() == typeof(byte[]))
return (X509Certificate)(m_RemoteCertificateOrBytes = new X509Certificate((byte[]) chkCertificateOrBytes));
else
return chkCertificateOrBytes as X509Certificate;
}
}
//
// More informational properties
//
public virtual CipherAlgorithmType CipherAlgorithm {
get {
return _SslState.CipherAlgorithm;
}
}
//
public virtual int CipherStrength {
get {
return _SslState.CipherStrength;
}
}
//
public virtual HashAlgorithmType HashAlgorithm {
get {
return _SslState.HashAlgorithm;
}
}
//
public virtual int HashStrength {
get {
return _SslState.HashStrength;
}
}
//
public virtual ExchangeAlgorithmType KeyExchangeAlgorithm {
get {
return _SslState.KeyExchangeAlgorithm;
}
}
//
public virtual int KeyExchangeStrength {
get {
return _SslState.KeyExchangeStrength;
}
}
//
//
// Stream contract implementation
//
//
//
public override bool CanSeek {
get {
return false;
}
}
//
public override bool CanRead {
get {
return _SslState.IsAuthenticated && InnerStream.CanRead;
}
}
//
public override bool CanTimeout {
get {
return InnerStream.CanTimeout;
}
}
//
public override bool CanWrite {
get {
return _SslState.IsAuthenticated && InnerStream.CanWrite;
}
}
//
//
public override int ReadTimeout {
get {
return InnerStream.ReadTimeout;
}
set {
InnerStream.ReadTimeout = value;
}
}
//
//
public override int WriteTimeout {
get {
return InnerStream.WriteTimeout;
}
set {
InnerStream.WriteTimeout = value;
}
}
//
public override long Length {
get {
return InnerStream.Length;
}
}
//
public override long Position {
get {
return InnerStream.Position;
}
set {
throw new NotSupportedException(SR.GetString(SR.net_noseek));
}
}
//
public override void SetLength(long value) {
InnerStream.SetLength(value);
}
//
public override long Seek(long offset, SeekOrigin origin) {
throw new NotSupportedException(SR.GetString(SR.net_noseek));
}
//
public override void Flush() {
_SslState.Flush();
}
//
//
protected override void Dispose(bool disposing) {
try {
_SslState.Close();
}
finally {
base.Dispose(disposing);
}
}
//
public override int Read(byte[] buffer, int offset, int count) {
return _SslState.SecureStream.Read(buffer, offset, count);
}
//
public void Write(byte[] buffer) {
_SslState.SecureStream.Write(buffer, 0, buffer.Length);
}
//
public override void Write(byte[] buffer, int offset, int count) {
_SslState.SecureStream.Write(buffer, offset, count);
}
//
[HostProtection(ExternalThreading=true)]
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState) {
return _SslState.SecureStream.BeginRead(buffer, offset, count, asyncCallback, asyncState);
}
//
public override int EndRead(IAsyncResult asyncResult) {
return _SslState.SecureStream.EndRead(asyncResult);
}
//
[HostProtection(ExternalThreading=true)]
public override IAsyncResult BeginWrite( byte[] buffer, int offset, int count, AsyncCallback asyncCallback, object asyncState) {
return _SslState.SecureStream.BeginWrite(buffer, offset, count, asyncCallback, asyncState);
}
//
public override void EndWrite(IAsyncResult asyncResult) {
_SslState.SecureStream.EndWrite(asyncResult);
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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