socket = new Socket（serverAddr，PORT）;

-1

當我說socket = new Socket（serverAddr，PORT）;在android中，打開了什麼類型的套接字？ UDP套接字或TCP套接字？socket = new Socket（serverAddr，PORT）;

我想從我的android發送數據並從我的電腦中讀取它。我正在從UDP接收器C＃腳本（Unity3D）讀取它。但我的android報告連接超時異常。

我的問題是，Android打開什麼類型的套接字？

2017-02-22 sujay

'Socket.connect'打開一個TCP套接字要使用UDP ，你需要創建一個'DatagramSocket' – ControlAltDel

https://developer.android.com/reference/java/net/DatagramSocket.html – Fildor

謝謝，那個幫助編輯。我試圖從我的電腦實時讀取手機上的加速度計數據。我打開了一個tcp連接來通過WiFi獲取數據流。但有一些滯後。有什麼更好的方法來做到這一點？無線是正確的方法，還是應該嘗試藍牙？最終，我的手機應該像無線鼠標一樣傳輸數據。 – sujay

-1

你從tcp使用。使用UDP套接字使用下面的示例代碼：

Server代碼：

public class udp_server 
{ 
public static void main(String args[]) 
{ 
    DatagramSocket sock = null; 

    try 
    { 
     //1. creating a server socket, parameter is local port number 
     sock = new DatagramSocket(7777); 

     //buffer to receive incoming data 
     byte[] buffer = new byte[65536]; 
     DatagramPacket incoming = new DatagramPacket(buffer, buffer.length); 

     //2. Wait for an incoming data 
     echo("Server socket created. Waiting for incoming data..."); 

     //communication loop 
     while(true) 
     { 
      sock.receive(incoming); 
      byte[] data = incoming.getData(); 
      String s = new String(data, 0, incoming.getLength()); 

      //echo the details of incoming data - client ip : client port - client message 
      echo(incoming.getAddress().getHostAddress() + " : " + incoming.getPort() + " - " + s); 

      s = "OK : " + s; 
      DatagramPacket dp = new DatagramPacket(s.getBytes() , s.getBytes().length , incoming.getAddress() , incoming.getPort()); 
      sock.send(dp); 
     } 
    } 

    catch(IOException e) 
    { 
     System.err.println("IOException " + e); 
    } 
} 

//simple function to echo data to terminal 
public static void echo(String msg) 
{ 
    System.out.println(msg); 
} 
}

客戶端代碼：

public class udp_client 
{ 
public static void main(String args[]) 
{ 
    DatagramSocket sock = null; 
    int port = 7777; 
    String s; 

    BufferedReader cin = new BufferedReader(new InputStreamReader(System.in)); 

    try 
    { 
     sock = new DatagramSocket(); 

     InetAddress host = InetAddress.getByName("localhost"); 

     while(true) 
     { 
      //take input and send the packet 
      echo("Enter message to send : "); 
      s = (String)cin.readLine(); 
      byte[] b = s.getBytes(); 

      DatagramPacket dp = new DatagramPacket(b , b.length , host , port); 
      sock.send(dp); 

      //now receive reply 
      //buffer to receive incoming data 
      byte[] buffer = new byte[65536]; 
      DatagramPacket reply = new DatagramPacket(buffer, buffer.length); 
      sock.receive(reply); 

      byte[] data = reply.getData(); 
      s = new String(data, 0, reply.getLength()); 

      //echo the details of incoming data - client ip : client port -  client message 
      echo(reply.getAddress().getHostAddress() + " : " +   reply.getPort() + " - " + s); 
     } 
    } 

    catch(IOException e) 
    { 
     System.err.println("IOException " + e); 
    } 
} 

//simple function to echo data to terminal 
public static void echo(String msg) 
{ 
    System.out.println(msg); 
} 
}

來源

2017-02-22 14:42:51 batnight

socket = new Socket（serverAddr，PORT）;

回答

相關問題