The channels created by channel factories on the client are accepted on the server by channel listeners. Once the channel connection is established between client and service, they can communicate by exchanging messages.
The CreateChannel uses the specified address as the destination for outgoing messages. The ServiceAddress.Uri property is used as the To header in the message. The ServiceReference.Via property is used as the physical destination to send messages to. This is typically the same as the ServiceAddress.Uri value.