ios - 使用 CFStreamCreatePairWithSocketToHost 的 TCP 套接字连接不工作

Question

我是 swift 编程的新手。我正在尝试从我的 ios 应用程序连接到服务器套接字。我有一个 View Controller ，在一个按钮操作中，我调用了连接到套接字服务器的函数

let socketConn = Connection();
socketConn.connect();

我已经在 Connection 类中将委托(delegate)设置为 self，但是在连接到服务器套接字后我的流函数没有被触发。

class Connection : NSObject, NSStreamDelegate {
        let serverAddress: CFString = "192.168.1.104"
        let serverPort: UInt32 = 5012

        private var inputStream: NSInputStream!
        private var outputStream: NSOutputStream!

        func connect() {
            println("connecting...")

            var readStream:  Unmanaged<CFReadStream>?
            var writeStream: Unmanaged<CFWriteStream>?

            CFStreamCreatePairWithSocketToHost(nil, self.serverAddress, self.serverPort, &readStream, &writeStream)

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

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

            self.inputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
            self.outputStream.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)

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

        func stream(stream: NSStream, handleEvent eventCode: NSStreamEvent) {
            println("stream event")
        }
    }

谁能帮我调试为什么在连接时调用流函数？

Answer 1

我正在使用 NSStream 类的 getStreamsToHostWithName 函数。它比 CFStreamCreatePairWithSocketToHost

更简单和更好

 func initNetworkCommunication() {

    print("connecting...")

    let serverAddress = "gzoa.vps.infomaniak.com"
    let serverPort = 1234

    NSStream.getStreamsToHostWithName(serverAddress, port: serverPort, inputStream: &inputStream, outputStream: &outputStream)

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

    self.inputStream!.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
    self.outputStream!.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)

    self.inputStream!.open()
    self.outputStream!.open()
}