//Runs impersonated.
protected override IAsyncResult OnBeginWriteMessage(XmlDictionaryWriter writer, AsyncCallback callback, object state)
{
ImpersonateOnSerializingReplyMessageProperty impersonationProperty = null;
IDisposable impersonationContext = null;
IPrincipal originalPrincipal = null;
bool isThreadPrincipalSet = false;
if (!ImpersonateOnSerializingReplyMessageProperty.TryGet(this.innerMessage, out impersonationProperty))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnableToImpersonateWhileSerializingReponse)));
}
try
{
impersonationProperty.StartImpersonation(out impersonationContext, out originalPrincipal, out isThreadPrincipalSet);
return(this.innerMessage.BeginWriteMessage(writer, callback, state));
}
finally
{
try
{
impersonationProperty.StopImpersonation(impersonationContext, originalPrincipal, isThreadPrincipalSet);
}
#pragma warning suppress 56500 // covered by FxCOP
catch
{
string message = null;
try
{
message = SR.GetString(SR.SFxRevertImpersonationFailed0);
}
finally
{
DiagnosticUtility.FailFast(message);
}
}
}
}
void ImpersonateCall(Action callToImpersonate)
{
ImpersonateOnSerializingReplyMessageProperty impersonationProperty = null;
IDisposable impersonationContext = null;
IPrincipal originalPrincipal = null;
bool isThreadPrincipalSet = false;
if (!ImpersonateOnSerializingReplyMessageProperty.TryGet(this.innerMessage, out impersonationProperty))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.UnableToImpersonateWhileSerializingReponse)));
}
try
{
impersonationProperty.StartImpersonation(out impersonationContext, out originalPrincipal, out isThreadPrincipalSet);
callToImpersonate();
}
finally
{
try
{
impersonationProperty.StopImpersonation(impersonationContext, originalPrincipal, isThreadPrincipalSet);
}
#pragma warning suppress 56500 // covered by FxCOP
catch
{
string message = null;
try
{
message = SR.GetString(SR.SFxRevertImpersonationFailed0);
}
finally
{
DiagnosticUtility.FailFast(message);
}
}
}
}