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POSeparate WCF Service Instance For Different Host Instance and Endpoint?
 

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    <p>I have two applications using the same wcf service instance. These two applications will always be started in pairs, so I can have a second, third, or fourth instance of these two. Does this mean I need to have one wcf service being hosted by say a Windows Service, IIS, or console app using a common endpoint address for all four of the instance pairs? Or if I dynamically hardcode the endpoint addresses such that each individual pair has it's own and self host in one of the two applications, does that mean each pair has access to it's own service?</p> <p>I could probably benchtop test this, but I figure someone with experience could save me quite a bit of coding time just trying to figure it out. </p> <p><strong>Update (for clarity):</strong></p> <p>The reason for this question is due to the particular situation I'm working with. The scenario is that the two applications involve one client exe that I am developing and a third-party exe that I have no control over. I can develop a dll that the third-party exe can load. Between my third-party app dll and the client exe the WCF service is intended to bridge the process space to allow the two to communicate transaction information. This will allow the client exe to control the third-party exe and the files it manages.</p>
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    1. COdifficult to answer without a more complete description, (is the service being used only to communicate between the two applications, is the service stateful? is this an appserver with many clients? are we talking duplex channels?) But i wonder if you couldn't share the same service/endpoint and have it pass messages that have an associated application-pair id so the service can route them appropriately?
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    2. COI'm basically applying the WCF concepts as I learn, so not sure what service stateful means. Yes though. It is used to communicate information between two applications. And it does use duplex channels because to accomplish this. It's basically one application using a service to manage transaction in another application.
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    3. CORight now I do have a centralized service being hosted by a third host application. It works great, but then I got to wondering if it would be best to manage the two in pairs versus a centralized service for any number of pairs. This prompted the question, if I self-host within one application and use a separate endpoint (with the address being dynamic but understandable only between the two applications per pair), does that create a separate service instance per pair? Or am I misunderstanding how the service instance is created?
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