Question

I am attempting to run multiple instances of the same WCF service in Visual Studio 2012. The service needs to be stateful so I am using [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]. The services needs to mimic server behaviour in that they must maintain state no matter which client connects to them.

How can I do this?

— EDIT —

An example:
There’s three instances of the service called Shop1, Shop2 and Shop3. Each have their own balance as a “state”. Client1 and Client2 now buys something from Shop1, which involves increasing the balance of Shop1. Client 3 purchases something from Shop2 which increases it’s balance.

The intention is that Shop1, Shop2 and Shop3 are hosted on different machines, but for testing purposes I would like to run them on the same machine.

Answer 1

use callback model against two-way, you will can process more clients

or

set [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)] and save state in static properties

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var serviseHost1 = new ServiceHost(typeof(Shop));
serviseHost1.AddServiceEndpoint(typeof(Shop), binding, endpoint);
serviseHost1.Open();
var serviseHost2 = new ServiceHost(typeof(Shop));
serviseHost2.AddServiceEndpoint(typeof(Shop), binding, endpoint);
serviseHost2.Open();