asp.net - How can I close the client-side JavaScript 'Hub' connection in SignalR? - Stack Overflow

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I have followed this tutorial.

But there is no hint how to close the Websocket connection via the HubConnection class in signalr.js-file. The file is V1.0.4.

This solution does not resolve my problem because I am using the microsofts javascript-library.

Here ist the code:

var lHubConnection = null;

var Init = function () {

    // create instance
    lHubConnection = new signalR.lHubConnectionBuilder().withUrl("/chatHub").build();

    // receive message
    lHubConnection.on("ReceiveMessage", function (pMessage) {

        // show message
        console.log(JSON.parse(pMessage));
    });

    // [...]
};

// close websocket connection
var CloseConnection = function(){

    if (lHubConnection !== null && lHubConnection.connection.connectionState === 1) {   
        // lHubConnection.invoke("?"); ???
    }
};

Here is an console output of the lHubConnection instance:

I have followed this tutorial.

But there is no hint how to close the Websocket connection via the HubConnection class in signalr.js-file. The file is V1.0.4.

This solution does not resolve my problem because I am using the microsofts javascript-library.

Here ist the code:

var lHubConnection = null;

var Init = function () {

    // create instance
    lHubConnection = new signalR.lHubConnectionBuilder().withUrl("/chatHub").build();

    // receive message
    lHubConnection.on("ReceiveMessage", function (pMessage) {

        // show message
        console.log(JSON.parse(pMessage));
    });

    // [...]
};

// close websocket connection
var CloseConnection = function(){

    if (lHubConnection !== null && lHubConnection.connection.connectionState === 1) {   
        // lHubConnection.invoke("?"); ???
    }
};

Here is an console output of the lHubConnection instance:

• javascript
• asp
• websocket
• signalr
• asp-core-2.1

Share Improve this question Follow edited Nov 6, 2018 at 7:34 Simon asked Oct 23, 2018 at 8:45 SimonSimon 4,87422 gold badges5656 silver badges9494 bronze badges 4

• Have you tried HubConnection.StopAsync? According to MS docs, thats how you close the hub connection. – Vincent P Commented Oct 23, 2018 at 10:16
• There is no *.StopAsync() method. Can you please post the link of the MS docs where you have seen that? – Simon Commented Oct 23, 2018 at 10:50
• Ah that method may not be available in the JavaScript version, I'm not 100% sure. Here is the link – Vincent P Commented Oct 23, 2018 at 11:10
• @Vincent P: That is the serverside c# code. I am looking for the clientside js-code. – Simon Commented Oct 23, 2018 at 11:58

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1 Answer 1

Sorted by: Reset to default 9

According to Microsoft the JavaScript client contains a stop function.

https://learn.microsoft./en-us/javascript/api/%40aspnet/signalr/hubconnection?view=signalr-js-latest#stop

In addition, you can find the .stop()-Method in the prototype of the framework:

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