SignalR is exclusively accessible within the active SILO environment

Currently, I am working on a real-time application using SignalR in combination with MVC and AngularJS (SILO). Each cshtml page serves as a Single Page Application (SPA), and within my AngularJS common service, I have incorporated generic operations such as delete and post. Additionally, I have integrated SignalR into my common service. The issue I am facing is that the service is only loaded when a specific SPA loads, causing SignalR to only function within that particular section. My goal is to make SignalR accessible throughout the entire application. How can I achieve this?

 self.hub = $.connection.MyHub;
    var initializeSignalR = function () {
        self.hub.client.addIssue = function (issue) {
            alert(JSON.stringify(issue));
        };
        $.connection.hub.url = "https://sitename.azurewebsites.net/signalr";
        $.connection.hub.logging = true;
        $.connection.hub.start().done(function () {
            var tenant = sessionStorage.getItem("tenantName");

            if (tenant !== "") {
                self.hub.server.subscribe(tenant);
            } else {
                console.log("An error occurred");
            }
        });
    };
    initializeSignalR();

In addition to this, within my SILO:

viewModelHelper.hub.on('addIssue', function (issueItem) {
    issues.push(issueItem);
});

The viewModelHelper represents my service. When moving from one SPA like Home to another SPA like Contacts, the SignalR methods are not executed due to the fact that the service is not initialized in that particular SPA. What steps can I take to ensure SignalR functionality persists across all SPAs even when they are not currently loaded.

Answer №1

In my opinion, you have a couple of options to consider:

  • One possibility is to reload it in every SILO by embedding your SignalR service reference in a shared layout. This approach allows you to maintain your current application structure.

  • Alternatively, you could transform your app into a true Single Page App (SPA), enabling you to load and reuse just one SignalR connection throughout the entire application. However, this transformation would require significant changes to your existing system. As a result, cshtml files cannot be used as they are currently; instead, the view layer and some logic would need to be shifted to the client side.

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