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Explain MEPs in WCF.

Answer»

MEP (Message Exchange Pattern) is a way of communicating between clients and SERVERS in WCF. MEP is one of the greatest features of WCF. The three types of MEPs supported by WCF are as follows:  

  • Request-Reply: Request-Reply is WCF's default communication pattern. 
  • One-way: Using this pattern MEANS you don't expect to receive a response BACK from the SERVICE after it performs a certain operation.  
  • Duplex: Duplex is a two-way communication way. The duplex MEP is applicable when the client initiates a long-running process with the service and the service requires notification. 


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