Introduction

In our journey through all the features exposed by SignalR, so far we have been analyzing and dissecting how we can use the Hubs API to deliver real-time, bidirectional messaging inside our applications. The Hubs API offers a high-level abstraction over the underlying connection, effectively introducing a Remote Procedure Call (RPC) model on top it. SignalR is also offering a low-level API, which is the foundation Hubs is built on top of. However, it's also available to be used directly from inside our applications and it's called the Persistent Connection API.

A Persistent Connection API is a more basic representation of what the concrete network connection really is, and exposes a simpler and rawer API to interact with. We hook into this API by inheriting from a base class (PersistentConnection) in order to add our own custom Persistent Connection manager. It is the same approach we have been using when defining our custom Hubs by deriving from the Hub class. Through a registration...