when handshaking, HttpContext.WebSockets.IsWebSocketRequest always being false

[SandyLovegood]

I tried this in Unity, with a websocket server build with aspnetcore. But when try to perform Connect() or ConnectAsyc(), the server recieve a http request with HttpContext.WebSockets.IsWebSocketRequest being false, thus the socket cannot be established. Has anyone get some clue?

In the server side, controller's code being like:

    [HttpGet("/testWebSocket")]
    public async Task WebSocketServer()
    {
        if (HttpContext.WebSockets.IsWebSocketRequest)//it's always false in here.
        {
            try
            {
                _socket = await HttpContext.WebSockets.AcceptWebSocketAsync();
                await new WebSocketHelper().WebSocketReceive(_socket);
            }
            catch (Exception e) {
        }
        }
    }

[SandyLovegood]

Can it be the issue between http2 and http1?

[SandyLovegood]

my bad. I‘ve found this link and it explains everything. Pls consider this issue to be closed.