디바이스1을 핫스팟으로 설정하고

디바이스 2, 3이 디바이스1의 핫스팟을이용하여 Wifi를 연결하고 서로 데이터 전송을 하려고 하는데요

 

WifiManager WM = (WifiManager) getSystemService(WIFI_SERVICE);
  WifiInfo WI = WM.getConnectionInfo();
  int ipAddress = WI.getIpAddress();
  String ip = Formatter.formatIpAddress(ipAddress);
  
  TextView sIP = (TextView) findViewById(R.id.ip);
  TextView msg = (TextView) findViewById(R.id.msg);
  sIP.setText(ip);
     
  try {
   int portNumber = 5001;
   
   ServerSocket aServerSocket = new ServerSocket(portNumber);
   Toast.makeText(getApplicationContext(), "Waiting..." ,Toast.LENGTH_LONG).show();
   
   while (true) {
    Toast.makeText(getApplicationContext(), "Start Accept..." ,Toast.LENGTH_LONG).show();
    Socket sock = aServerSocket.accept();
    Toast.makeText(getApplicationContext(), "Accept..." ,Toast.LENGTH_LONG).show();
    ObjectInputStream instream = new ObjectInputStream(sock.getInputStream());
    final Object obj = instream.readObject();
    msg.setText("Input from client : "+obj);
    
    ObjectOutputStream outstream = new ObjectOutputStream(sock.getOutputStream());
    outstream.writeObject(obj+"from Server");
    outstream.flush();
          
    sock.close();
    
   }
   
  }
  catch (Exception ex) {
   Toast.makeText(getApplicationContext(), "Socket fail" ,Toast.LENGTH_LONG).show();
   ex.printStackTrace();
  }

 

이게 서버 코드이구요

 

 

WifiManager WM = (WifiManager) getSystemService(WIFI_SERVICE);
  WifiInfo WI = WM.getConnectionInfo();
  int ipAddress = WI.getIpAddress();
  String ip = Formatter.formatIpAddress(ipAddress);  
      
  final EditText tf = (EditText) findViewById(R.id.editText1);
  final TextView msg = (TextView) findViewById(R.id.msg);
  TextView mIP = (TextView) findViewById(R.id.mIP);
    
  mIP.setText(ip);
   
  try {
    String hostname = "192.168.43.195";
    int port = 5001;
    
    InetAddress serverAddr = InetAddress.getByName(hostname);
    Socket sock = new Socket(hostname, port);
    Toast.makeText(getApplicationContext(), "Connecton Complete" ,Toast.LENGTH_LONG).show();
    
    ObjectOutputStream outstream = new ObjectOutputStream(sock.getOutputStream());
    outstream.writeObject(tf.getText().toString());
    outstream.flush();
    
    ObjectInputStream instream = new ObjectInputStream(sock.getInputStream());
    String obj = (String) instream.readObject();
    msg.setText(obj);
    
    sock.close();
  }
  catch (Exception ex) {
   Toast.makeText(getApplicationContext(), "Connection fail" ,Toast.LENGTH_LONG).show();
   ex.printStackTrace();
  }

이게 클라이언트 코드입니다.

 

그런데 서버에서 accept가 안되는거같습니다...ㅠ 대체 왜 이런걸까요 ㅠㅠ

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