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Correct logic to reconnect in SignalR with HubConnection


Correct logic to reconnect in SignalR with HubConnection

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Correct logic to reconnect in SignalR with HubConnection
Tag : chash , By : kennystone
Date : November 23 2020, 03:01 PM

To fix this issue So I found this coolest solution Best practice for reconnecting SignalR 2.0 .NET client to server hub
private async Task<bool> ConnectToSignalRServer()
{
    bool connected = false;
    try
    {
        Connection = new HubConnection("server url");
        Hub = Connection.CreateHubProxy("MyHub");
        await Connection.Start();

        //See @Oran Dennison's comment on @KingOfHypocrites's answer
        if (Connection.State == ConnectionState.Connected)
        {
            connected = true;
            Connection.Closed += Connection_Closed;
        }
        return connected;
    }
    catch (Exception ex)
    {
        Console.WriteLine("Error");
        return false;
    }
}

private async void Connection_Closed()
{
    if(!IsFormClosed) // A global variable being set in "Form_closing" event of Form, check if form not closed explicitly to prevent a possible deadlock.
    {
        // specify a retry duration
        TimeSpan retryDuration = TimeSpan.FromSeconds(30);

        while (DateTime.UtcNow < DateTime.UtcNow.Add(retryDuration))
        {
            bool connected = await ConnectToSignalRServer(UserId);
            if (connected)
                return;
        }
        Console.WriteLine("Connection closed")
    }
}

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SignalR's $.hubConnection() not working


Tag : jquery , By : Joshua Johnson
Date : March 29 2020, 07:55 AM
it should still fix some issue I presume you followed the walkthrough that came with 0.5.3's announcement already? http://blogs.msdn.com/b/webdev/archive/2012/08/22/announcing-the-release-of-signalr-0-5-3.aspx
make sure you can open both /Scripts/jquery.signalR-0.5.3.js and /signalr/hubs in a browser.

SignalR dispose of HubConnection


Tag : asp.net , By : David Marchant
Date : March 29 2020, 07:55 AM
This might help you It's not necessary if you are calling Stop().
See https://msdn.microsoft.com/en-us/library/dn235890(v=vs.118).aspx
Task.Run(()=>hubConnection.Stop());

Authenticate signalr hubConnection


Tag : chash , By : 40a
Date : March 29 2020, 07:55 AM
Does that help If you are using your own custom token you can do like this:
Client(.NET, but i think you will understand):
var connection = new HubConnection("url", "CustomToken=SomeToken");
connection.Start().Wait();
    public override Task OnConnected()
    {
        if(Context.QueryString["CustomToken"] != "CorrectToken")
        {
            ///Forcefully close the connection
            HttpContext.Current.Response.Close();
        }
        return base.OnConnected();
    }

Android SignalR java-client: Not receiving all the SignalR messages on the HubConnection


Tag : java , By : KaoFloppy
Date : March 29 2020, 07:55 AM

SignalR HubConnection.StartAsync exception: GetStreamItemType in Microsoft.AspNetCore.SignalR.Client.Core, v1.1.0.0 does


Tag : chash , By : usingtechnology
Date : January 02 2021, 06:48 AM
may help you . In case anyone else runs into this problem, I'm posting the answer here.
I was able to work around this problem by updating all SignalR and related NUGet packages to their version 3.x pre-release versions.
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