WCF中的发布-订阅服务
如果针对相同的事件契约，应用程序需要同时支持临时订阅者和持久订阅者，可以让订阅服务类直接继承ISubscriptionService接口的子接口，以及IPersistentSubscriptionService接口：
[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]同时公开两个与之匹配的终结点：
class MySubscriptionService : SubscriptionManager<IMyEvents>,
IMySubscriptionService,IPersistentSubscriptionService
{}
<services>（未完待续）
<service name = "MySubscriptionService">
<endpoint
address = "..."
binding = "..."
contract = "IMySubscriptionService"
/>
<endpoint
address = "..."
binding = "..."
contract = "IPersistentSubscriptionService"
/>
</service>
</services>
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