Swift 3输入流和输出流连接但没有流

时间:2016-11-24 14:38:47

标签: ios swift

我在使用Swift 3中的StreamDelegate连接到Java套接字时遇到了问题。我目前正在重写一个大的Objective C项目,其中这段代码像魅力一样运行,但我似乎无法做到能够让它在Swift 3中工作。我遇到的问题是流函数永远不会运行。所以“流!”永远不会打印出来。调用Stream.Status之后的self.outputStream.open()为1(开放)。代码运行没有任何问题,并且“在线程上打开流:”被调用。

我尝试连接的套接字是一个Java套接字。

注意:我经历过调试器打印出一条消息,说没有附加处理程序,但我不知道它是相关的。

我找到了几个类似的帖子,但没有找到这个确切的问题。如果有人有任何想法,我会很高兴听到他们!感谢任何试图提供帮助的人。

import Foundation

@objc class SocketConnector : NSObject, StreamDelegate {
    var inputStream : InputStream!
    var outputStream : OutputStream!

    var lock : NSRecursiveLock

    override init () {
        lock = NSRecursiveLock.init()
    }

func connect (host : String, port : Int) -> Bool {
    lock.lock()
    var readStream : Unmanaged<CFReadStream>?
    var writeStream : Unmanaged<CFWriteStream>?

    CFStreamCreatePairWithSocketToHost(nil, host as CFString!, UInt32(port), &readStream, &writeStream)

    inputStream = readStream!.takeRetainedValue()
    outputStream = writeStream!.takeRetainedValue()

    self.inputStream.delegate = self
    self.outputStream.delegate = self

    self.inputStream.schedule(in: RunLoop.current, forMode: .defaultRunLoopMode)
    self.outputStream.schedule(in: RunLoop.current, forMode: .defaultRunLoopMode)

    self.inputStream.open()
    self.outputStream.open()

    print("Opening streams on thread: %@", Thread.current)

    lock.unlock()

    return true
}

func stream (aStream : Stream, handleEvent eventCode : Stream.Event) {
    print("Stream!")
    switch eventCode {
    case Stream.Event.hasBytesAvailable:
        print("Stream has bytes:");
        break;
    case Stream.Event.errorOccurred:
        print("Stream error occurred: %@",aStream.streamError?.localizedDescription)
    case Stream.Event.openCompleted:
        print("Stream has bytes:")
        break
    case Stream.Event.endEncountered:
        print("Stream ended")
        self.closeStreams()
        break
    default:
        break
    }
}

1 个答案:

答案 0 :(得分:2)

您的工具与StreamDelegate的stream方法不兼容。 你必须改为:

  

func stream(_ aStream:Stream,handle eventCode:Stream.Event)

而不是

  

func stream(aStream:Stream,handleEvent eventCode:Stream.Event