SignalR client functions not being called

Question

So i have a web app running on signalR and i am using just one HTML with static header and footer and just a div to dynamically change the page content. One of the tabs that load into the div loads js file with signalR connection to the hubs, everything works fine, the js file listens to events and it fires server side methods but the issue is the server is not calling the client functions in the js file. Connection ids match and it is successfully connected to the client yet not procing the functions. The other js file i use for authenticating user is not added dynamically and works just fine.

hub method that is called correctly:

public void ClientCall()
{
        IHubContext context;
        context = GlobalHost.ConnectionManager.GetHubContext<LdServiceHub>();
        context.Clients.Client(this.Context.ConnectionId).callbackMethod("50");
}

the js client function that doesnt fire:

$.connection.ldServiceHub.client.callbackMethod = function (item) {
console.log(item);}

and this is how i load the signalR file into the empty div:

var script = document.createElement('script');
script.src = 'Scripts/SignalRConnection.js';
script.type = 'text/javascript';
maindiv.appendChild(script);

it loads properly and connects properly, fires hub function properly but never recieves the call from server and procs a client function.

Keep in mind the script is added to the DOM dynamically and the code above is only a snippet example of the code as the src code i am using contains lot of unrelated stuff. Thanks

EDIT: thought i should mention i use Owin selfhost to host the connection, everything works fine in the user authentication js file, the only difference between those two is that the second one is added dynamically to the html

Pato Srna Pato Srna · Accepted Answer · 2018-05-10T07:59:09

The problem was in the load order of the files, i loaded the html into the div first and then the js, yet the js worked and listened to events and sent requests to server but never recieved any call from server. Noted: the load order is very important for js.

SignalR client functions not being called

1 Answers