3. Channels
A CHANNEL IS THE CONDUIT through which all messages pass to and from WCF applications. It is responsible for preparing and delivering messages in a consistent way. Channels are defined for transports, protocols, and message interception. Channels are layered together to create a channel stack. A channel stack is a layered communication stack that processes messages. For example, a channel stack could be constructed using a TCP transport channel and a transaction protocol channel. Such a channel stack would allow sending and receiving messages across a network using the TCP protocol and transactions to flow from client to server.
The goal of a channel stack is to transform a message into a wire format compatible with the sender and ...
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