Programming WCF Services

5.1. All the samples in the previous chapters included contracts whose operations are of the type known as request-reply. As the name implies, the client issues a request in the form of a message, and blocks until it get the reply message. If the s...

There are cases when an operation has no returned values, and the client does not care about the success or failure of the invocation. To support this sort of fire-and-forget invocation, WCF offers one-way operations. Once the client issues the call,...

WCF supports allowing the service to call back to its clients. During a callback, in many respects the tables are turned: the service is the client and the client becomes the service (see Figure 5-1). Figure 5-1. A callback allows the service to c...

The basic WCF callback mechanism does not indicate anything about the nature of the interaction between the client and the service. They could be equal peers in a commutative interaction, each calling and receiving calls from the other. However, the...

By default, when the client and the service exchange messages, these messages are buffered on the receiving end and delivered once the entire message is received. This is true whether it is the client sending a message to the service or the service r...