How to identify the WCF host from service implementation?

[pjames]

I have a WCF environment hosted on a windows service. I have two hosts (one on TCP and another on NamedPipes). Don’t be alarmed about the multiple hosts – this is a messaging engine and hosts are mounted dynamically based on the configuration. No matter how many types of hosts I have, there is only one service implementation. Now the problem is, when my service implementation is invoked by an incoming call, how do I identify whether it was from host A or host B? While hosting each type, can I specify some metadata which identifies the host information so that I can access it from the implementation? Please help.

Thanks, James