WCF with TCP binding

One of our customers has a rich client application based on WPF with WCF communication towards the backend but with TCP binding.
We have not yet tried the WcfAutoTracerSample.cs, but when I look at the source it seems based on HTTP binding.
As far as I know from UEM and RUM, the correlation is indeed based on an HTTP header. So, I wonder if this would also work for TCP binding. (guess not). And if it doesn't work OOTB, how we would be able to achieve this.
I am not afraid of a little bit of coding ;-)