Swift中的信号员使用SwiftR-协商请求时出错

我直接从这里得到一个工作项目: https://docs.microsoft.com/en-us/aspnet/core/tutorials/signalr?view=aspnetcore-2.1&tabs=visual-studio-mac

在本地运行,在visualstudio内部运行-在localhost:5000,我甚至使用了示例视图,它们必须执行一些信号器命令。一切看起来太好了! 真管用!

现在我想利用 SwiftR 基本上只需对本地运行的信号机做一个简单的调用,以证明它在Swift中工作( http://localhost:5000/chatHub )

我得到一个错误:协商请求时出错

输出如下:

started
Error: Optional(["message": Error during negotiation request.])
disconnected

在我的pod文件中,我只是使用

pod 'SwiftR'

func testThis()
    {
        // Client
        let connection = SignalR("http://localhost:5000/chatHub")

        let simpleHub = Hub("ChatHub")
        simpleHub.on("SendMessage") { args in
            let message = args![0] as! String
            let detail = args![1] as! String
            print("Message: \(message)\nDetail: \(detail)")
        }

        connection.addHub(simpleHub)
        connection.starting = { print("started") }
        connection.connected = { print("connected: \(connection.connectionID)") }
        connection.connectionSlow = { print("connectionSlow") }
        connection.reconnecting = { print("reconnecting") }
        connection.reconnected = { print("reconnected") }
        connection.disconnected = { print("disconnected") }
        connection.error = { error in
            print("Error: \(error)")

            if let source = error?["source"] as? String, source == "TimeoutException" {
                print("Connection timed out. Restarting...")
                connection.start()
            }
        }
        connection.start()

        do {
            try
            // Invoke server method
            simpleHub.invoke("SendMessage", arguments: ["Simple Test", "This is a simple message"])
        }
        catch {
            print(error)
        }
        // Invoke server method and handle response
          do {
            try simpleHub.invoke("SendMessage", arguments: ["Simple Test", "This is a simple message"]) { (result, error) in
            if let e = error {
                print("Error: \(e)")
            } else {
                print("Success!")
                if let r = result {
                    print("Result: \(r)")
                }
            }
        }
        }
          catch {
            print(error)
        }
    }

在viewDidLoad()中,我只是调用testThis()

我甚至修改了.net代码,允许COR这样:

services.AddCors();

再往下走

 app.UseCors(cors =>
            {
                cors.AllowAnyHeader();
                cors.AllowAnyOrigin();
                cors.AllowAnyMethod();
            });

Error: Optional(["message": Error during negotiation request.])