如何通过iOS中的套接字从服务器接收数据？

我有一个应用程序，我必须使用套接字连接将数据发送到服务器，并读取将由服务器发送的数据。我正在使用AsyncSocket类来写入和读取数据。我成功地在服务器上写入数据，服务器可以看到应用程序发送的数据。现在，问题是，每当服务器发送一些数据到应用程序，那么我如何使用AsyncSocket类来接收这些数据。以下是我的代码。我把代表方法读取数据，但它从来没有调用。如何通过iOS中的套接字从服务器接收数据？

var socket = AsyncSocket() 

socket = AsyncSocket(delegate: self) 
self.socketConnect() 

func socketConnect() { 
     do { 
      try socket?.connectToHost("IP Address", onPort: 6968) 
     } catch _ as NSError { 

     } 
    } 



//MARK: - AsyncSocket Delegates method 

    func onSocket(sock: AsyncSocket!, didConnectToHost host: String!, port: UInt16) { 
     print("Connected to host : \(host) with Port : \(port)") 


     let alert:UIAlertController = UIAlertController(title: "Connected", message: "Host:\(host) ** Port:\(port)", preferredStyle:.Alert) 
     self.presentViewController(alert, animated: true, completion: nil) 
     let action:UIAlertAction = UIAlertAction(title: "Ok", style: .Default) { (UIAlertAction) -> Void in 
      print("Ok Pressed") 
     } 
     alert .addAction(action) 

     let dict = ["iUserId":"100","iRideId":"276","type":"client"] // For client side 
     var jsonString = NSString() 
     do { 
      let data = try NSJSONSerialization.dataWithJSONObject(dict , options: NSJSONWritingOptions.PrettyPrinted) 
      jsonString = NSString(data: data, encoding: NSUTF8StringEncoding)! 

     }catch let error as NSError { 
      print(error) 
     } 
     let reqData = jsonString.dataUsingEncoding(NSUTF8StringEncoding) 
     socket.writeData(reqData, withTimeout: 1.0, tag: 100) 

    } 

    func onSocket(sock: AsyncSocket!, didReadPartialDataOfLength partialLength: UInt, tag: Int) { 
     print("Read partial data") 
    } 

    func onSocket(sock: AsyncSocket!, didWriteDataWithTag tag: Int) { 
     print("Data write successfully") 
    } 

    func onSocket(sock: AsyncSocket!, didReadData data: NSData!, withTag tag: Int) { 
     print("Data read successfully") 
    } 

    func onSocket(sock: AsyncSocket!, willDisconnectWithError err: NSError!) { 
     print("Socket disconnect with error :\(err.description)") 
    } 

    func onSocket(sock: AsyncSocket!, didAcceptNewSocket newSocket: AsyncSocket!) { 
     print("Accept new socket") 
    }

来源

2016-06-08 Birju

这个类（委托一）从NSObject继承吗？ http://stackoverflow.com/a/24225381/653513 –

我找到了自己的答案。我错过的是，我必须把套接字连接到主机时，readdata行。所以写完这个didReadData方法后，将被调用，并在该方法也必须编写一个单行代码，我写在didConnectToHost方法。

func socket(sock: GCDAsyncSocket!, didConnectToHost host: String!, port: UInt16) { 
     print("Connected to host : \(host) with Port : \(port)") 
     socket.readDataWithTimeout(-1, tag: 0) 
    } 

func socket(sock: GCDAsyncSocket!, didReadData data: NSData!, withTag tag: Int) { 
     print("Data read successfully") 


     socket.readDataWithTimeout(-1, tag: 0) 
}

来源

2016-06-10 06:07:18 Birju

如何通过iOS中的套接字从服务器接收数据？

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