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What are the different message exchanging patterns available in WCF?
There are 3 main different message exchanging patterns available in WCF.
1. Request-Reply - In the request-reply pattern, a client application sends a message to a WCF service and then waits for a reply. This is the classic and most commonly used message exchange pattern in WCF.
2. One-Way - In a one way message exchange pattern no response is sent back, even if there is an exception. In the one-way message exchange pattern, a client application sends a message to a WCF service but the service does not send a reply message to the client. You can use this pattern when a client requests the service take an action but does not need to wait for a reply.
3. Duplex - In the request/reply and one-way message exchange patterns, only the client can initiate communication. In the duplex pattern, both the client and the service can initiate communication. The client calls a method of the service. The service can then use a client callback to call a method in the client. You can 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 the default message exchange pattern used in WCF?
Request/Reply
How do you setup a one way operation?
Set OperationContractAttribute's IsOneWay property to true. An example is shown below.
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What is MTOM?
MTOM stands for Message Transmission Optimization Mechanism and is an Interoperable standard that reduces the overhead of large binary data transfera. Removes bloat and processing overhead of base64 encoded data. Improves overall message transfer performance.
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