Unable to pass information from the client to the hub

Context.GetHttpContext() returns the HttpContext in SignalR mode, but returns null in AzureSignalR mode. Therefore I can’t read any QueryString or custom Http Header values in the OnConnectedAsync() method of the Hub. I’m using the following code to create the connection.

var connection = new HubConnectionBuilder().WithUrl("http://localhost:5000/message?t=TestValue",
                    options => options.Headers = new Dictionary<string, string>
                    {
                        {
                            "X-CustomHeader", "CustomValue"
                        }
                    })
                .Build();
await connection.StartAsync();

Is there any way to pass information from the client to the hub using the AzureSignalR service?

[maxiptah]

Do you have an estimation as to when this fix is going to be deployed? I’m trying to pass an auth0 token to the hub method. This is normally passed as a bearer token in authorization header. However as stated in this post, custom header is not possible because of limitations of JS websocket client which does not allow for it. So I wanted to pass my token as query parameter, but it never reaches my hub. Where should I read the query parameters anyway? From Context.Items? Because my Context does not contain Request property as in the example above, and I’ve installed the nuget package of SignalR just today.

[xscript]

Yes, the headers are not passed through from client to server. We will need some discussion to decide whether to support it. A work around is to create a separate hub method and call this method to send information once the client is connected.