Ignore SSL errors with signalR Core Client

Question

I\'m making an application that involves a website on localhost as a user interface with Asp.net Core and SignalR Core.

My problem is that I get an authentication ex

Answer 1

When connecting to HTTPS to ignore SSL certificate in SignalR Core client you should do this in HttpMessageHandlerFactory configs. Use HttpConnectionOptions in WithUrl method like this:

connection = new HubConnectionBuilder()
.WithUrl("https://localhost:443/MiniLyokoHub", (opts) =>
{
    opts.HttpMessageHandlerFactory = (message) =>
    {
        if (message is HttpClientHandler clientHandler)
            // bypass SSL certificate
            clientHandler.ServerCertificateCustomValidationCallback +=
                (sender, certificate, chain, sslPolicyErrors) => { return true; };
        return message;
    };
})
.Build();

Answer 2

It seems that the SignalR Core Client is also subject to Https redirection Which is why it wouldn't connect to the http port.

For my use case, I just had to disable it in Startup.cs