SignalR 获取服务器上的不记名令牌

Question

For a project, I have a C# asp.net core server and an Angular web client application. I was following the SignalR documentation on bearer tokens. It states that in order to give the authentication token, you can pass it as follows (copy-paste of the documentation).

let connection = new signalR.HubConnectionBuilder()
    .withUrl("/chathub", {
        accessTokenFactory: () => {
            // Get and return the access token.
            // This function can return a JavaScript Promise if asynchronous
            // logic is required to retrieve the access token.
        }
    })
    .build();

But now, I would like to extract this specific token on my C# server. The problem is, I can't find it anywhere. only the Context of type HubCallerContext is provided when a user connects in the method public override async Task OnConnectedAsync() or when a user invokes a method himself. But this Context does not supply the given authentication token. How could I extract this?

Answer 1

As far as I know, if you want to get the token in the hub method, you could refer to below codes to get it.

 var accessToken = Context.GetHttpContext().Request.Query["access_token"];