没有调用Swift 4 StreamDelegate

Question

我一直致力于与我的服务器建立连接，并已将其连接起来。但是没有调用流委托。我正在设置流委托给自己，尝试使用.schedule，使用.unretainedvalue以及.retainedvalue，已经铸造而不是将其转换为InputStream / OutputStream ..继承人我的乐趣connect（）

var inputOpened = false
var outputOpened = false
var state: NetworkState?
var inputStream: InputStream!
var outputStream: OutputStream!
func connect() {
    state = NetworkState.NetworkStateConnectingToServer
    var readStream:  Unmanaged<CFReadStream>?
    var writeStream: Unmanaged<CFWriteStream>?

    CFStreamCreatePairWithSocketToHost(nil, "192.168.1.4" as CFString, 1955, &readStream, &writeStream)

    inputStream = readStream?.takeRetainedValue() as! InputStream!
    outputStream = writeStream?.takeUnretainedValue() as! OutputStream!
    inputStream.delegate = self
    outputStream.delegate = self
    inputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
    outputStream.schedule(in: RunLoop.current, forMode: RunLoopMode.defaultRunLoopMode)
    inputStream.open()
    outputStream.open()
}

和我的流委托功能

 func stream(_ aStream: Stream, handle eventCode: Stream.Event) {
    print("ran")
    DispatchQueue.main.async(execute: {
        if aStream == self.inputStream {
            self.inputStreamHandle(eventCode)
        }
        else if aStream == self.outputStream {
            self.outputStreamHandle(eventCode)
        }

    })
}