Which message exchange pattern is supported by WCF?

In WCF there are the following 3 types of Message Exchange Pattern: Request/Response. One way. Duplex.

Which of the message exchange pattern is not supported in WCF?

Even if some error occurs in communication, WCF Service doesn’t send any response back. That’s why One-Way Message Exchange Pattern provides no support for followings in service operations: no output parameters.

What are the various message exchange patterns?

The message exchange patterns describe the message flow between parties in the communication process, there are two major message exchange patterns — a request–response pattern, and a one-way pattern.

Which of the following message pattern is the duplex exchange pattern?

Duplex or Callback Message Exchange Pattern: The client calls a method of the service. The service can then use a client callback to call a method in the client. You c use this pattern when you want the service to send a notification or alert to the client after the client has called the service.

What is one way messaging in WCF?

The one-way message exchange pattern is useful when a client needs to send information to a service but doesn’t receive a response. In reality, it’s “fire and acknowledge” because the caller receives an acknowledgement that the message was successfully committed to the communication channel.

What is the pattern which is used to transmit the message?

Channel. The channel is the method (auditory and visual) that is used to transmit the message to the receiver.

What is MEP in SOA?

Message exchange patterns (MEPs) represent a set of templates that provide a group of already mapped out sequences for the exchange of messages. The most common example is a request and response pattern.

What is message contract in WCF?

A message contract is used to control the structure of a message body and serialization process. It is used to send/access the information in the soap header. By use of a Message Contract we can customize the parameters sent using a SOAP message between the client and the server.

What is duplex service in WCF?

A duplex contract allows clients and servers to communicate with each other independently so that either can initiate calls to the other. The duplex contract is one of three message patterns available to Windows Communication Foundation (WCF) services. The other two message patterns are one-way and request-reply.