WCF client is a client application creates to expose the service operations as method. Any application can host a WCF client, including an application that host a service. Therefore it is possible to create a service that includes WCF clients of other services.
Characteristics of the service are described by the metadata. This metadata can be exposed to the client to understand the communication with service. Metadata can be set in the service by enabling the ServiceMetadata node inside the servcieBehaviour node of the service configuration file.
<endpoint address="" contract="IMathService"
<serviceDebug includeExceptionDetailInFaults="true" />
This metadata can be viewed while creating WCF client application using SvcUtil.exe
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