NServicebus JavaScript message handler: Enhancing Communication

I am in the process of developing a JavaScript event subscriber for NServicebus, and I am seeking feedback on my approach as well as any potential pitfalls to watch out for in this design.

My proposed components are as follows:

  1. ASP.NET MVC BusController (ASyncController)

    • Receives subscriptions from JavaScript clients and provides a sessionId for further communication.
    • Async ActionMethod Receive returns a JSON serialized EventMessage.
    • Utilizes a generic message handler to filter and queue events for subscribed clients.

  2. JavaScript client

    • Can subscribe to one or multiple events using the subscribe method on the BusController.
    • Receive events through long-polling of the Receive method on the BusController with the assigned sessionId.

However, there are a couple of concerns:

  1. How to detect when a client disconnects?
    • Considering implementing a timeout system that prompts the client to reconnect with the Receive ActionMethod.
  2. Concerns about the performance of a generic message handler in the buscontroller handling all messages in the system. Has anyone encountered this issue before?
javascriptasp.net-mvcjsonnservicebus

Answer №1

If you're looking for a solution that works seamlessly, consider trying out pServiceBus. Their JavaScript API allows for easy implementation of pub-sub functionalities, similar to what you would do in .net code.

pServiceBus is designed to automatically adapt to different browser capabilities, utilizing Http Streaming/Comet and switching to long polling if necessary.

For a demonstration of the pub-sub capabilities using the JavaScript API, check out this sample:

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