After having analyzed most of the features SignalR exposes to enable us to add real-time messaging features to our applications, we move into a different set of useful characteristics we can exploit to control our application. In particular, we'll have a deeper look at a bunch of APIs we can leverage to control different aspects concerning the connections we establish across clients and servers. In fact, SignalR works across networks, which we all know we cannot fully trust, and over HTTP, which imposes certain rules when dealing with things such as server origin and connection lifetime or state.