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In software architecture, a messaging pattern is a network-oriented architectural pattern which describes how two different parts of a message passing system connect and communicate with each other. In telecommunications, a message exchange pattern (MEP) describes the pattern of messages required by a communications protocol to establish or use a communication channel. There are two major message exchange patterns — a ''request–response'' pattern, and a ''one-way'' pattern. For example, HTTP is a ''request–response'' pattern protocol, and UDP is a ''one-way'' pattern. ==SOAP== The term "Message Exchange Pattern" has a specific meaning within the Simple Object Access protocol (SOAP).〔http://www.w3.org/TR/soap12-part1/#soapmep SOAP MEPs in SOAP W3C Recommendation v1.2〕〔(Web Services Description Language (WSDL) Version 2.0: Additional MEPs )〕 SOAP MEP types include: #In-Only: This is equivalent to ''one-way''. A standard one-way messaging exchange where the consumer sends a message to the provider that provides only a status response. #Robust In-Only: This pattern is for reliable one-way message exchanges. The consumer initiates with a message to which the provider responds with status. If the response is a status, the exchange is complete, but if the response is a fault, the consumer must respond with a status. #In-Out: This is equivalent to ''request–response''. A standard two-way message exchange where the consumer initiates with a message, the provider responds with a message or fault and the consumer responds with a status. #In Optional-Out: A standard two-way message exchange where the provider's response is optional. #Out-Only: The reverse of In-Only. It primarily supports event notification. It cannot trigger a fault message. #Robust Out-Only: similar to the out-only pattern, except it can trigger a fault message. The outbound message initiates the transmission. #Out-In: The reverse of In-Out. The provider transmits the request and initiates the exchange. #Out-Optional-In: The reverse of In-Optional-Out. The service produces an outbound message. The incoming message is optional ("Optional-in"). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Messaging pattern」の詳細全文を読む スポンサード リンク
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