Book Image

SignalR Real-time Application Cookbook

By : Roberto Vespa
Book Image

SignalR Real-time Application Cookbook

By: Roberto Vespa

Overview of this book

Table of Contents (18 chapters)
SignalR Real-time Application Cookbook
About the Author
About the Reviewers

Extending the Hub pipeline

Among all the services that SignalR exposes and lets us customize, there is one that is particularly interesting: IHubPipeline. This service, as its name clearly states, represents the full pipeline that underpins a Hub, and its goal is to collect a set of modules to be executed during the initialization of a Hub. Each module implements IHubPipelineModule, and each method exposed by this contract is executed during the bootstrap phase. The job of those methods is to provide a factory methods that SignalR will then invoke during specific moments in the lifetime of every instance of a Hub. There are factories to build incoming and outgoing Hub invocations; to perform connection, reconnection, and disconnection tasks; to authorize connections; and to handle whether a client can rejoin groups on reconnection.

Thanks to the dependency injection mechanism we've been analyzing earlier, we could replace the IHubPipeline service with our custom implementation, but that would...