WcfTestClient ... bug.

Enter a absolute path, probably anything with a \ in it into the wcf test client as a request argument. and it will happily substitute what you asked it to pass with an empty nil element it seems. Wcf Test Client 11.05.50727.1 wcf test client config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IHpExstream" sendTimeout="00:05:00"
                    messageEncoding="Mtom">
                    <security mode="None" />
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://server.net/HpExstream/Exstream.svc"
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IHpExstream"
                contract="IHpExstream" name="WSHttpBinding_IHpExstream" />
        </client>
    </system.serviceModel>
</configuration>