private void AddDemuxerBindingElement(BindingElementCollection elements)
{
if (elements.Find <ChannelDemuxerBindingElement>() == null)
{
TransportBindingElement item = elements.Find <TransportBindingElement>();
if (item == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(System.ServiceModel.SR.GetString("TransportBindingElementNotFound")));
}
elements.Insert(elements.IndexOf(item), new ChannelDemuxerBindingElement(true));
}
}
void AddDemuxerBindingElement(BindingElementCollection elements)
{
if (elements.Find <ChannelDemuxerBindingElement>() == null)
{
// add the channel demuxer binding element right above the transport
TransportBindingElement transport = elements.Find <TransportBindingElement>();
if (transport == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.TransportBindingElementNotFound)));
}
// cache the context state in the demuxer so that the same context state can be provided to the transport
// when building auxilliary channels and listeners (for ex, for security negotiation)
elements.Insert(elements.IndexOf(transport), new ChannelDemuxerBindingElement(true));
}
}