android socket client/server disconnect
Question
I'm writing a simple client server for android, it works super until I reran the client. Then nothing happens. The server runs continuously and the client must be connected and disconnected. Any some help would be very useful. Thank you.
Server
public class MyService extends Service {
String line = null;
String temp_comand = null;
Socket client;
public static String SERVERIP = "10.0.2.15";
public final static int DISPATCH_KEY_FROM_IME = 1011;
public static final int SERVERPORT = 8080;
private Handler handler = new Handler();
private ServerSocket serverSocket;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
Log.i("SERVISE", "STARTED");
SERVERIP = getLocalIpAddress();
Thread fst = new Thread(new ServerThread());
fst.start();
}
public class ServerThread implements Runnable {
public void run() {
try {
if (SERVERIP != null) {
handler.post(new Runnable() {
@Override
public void run() {
Log.v("wlan0", Utils.getMACAddress("wlan0"));
Log.v("eth0", Utils.getMACAddress("eth0"));
Log.v("<< IP4 >>", Utils.getIPAddress(true));
Log.v("<< IP6 >>", Utils.getIPAddress(false));
}
});
serverSocket = new ServerSocket(SERVERPORT);
while (true) {
// LISTEN FOR INCOMING CLIENTS
client = serverSocket.accept();
handler.post(new Runnable() {
@Override
public void run() {
}
});
try {
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
while ((line = in.readLine()) != null) {
Log.d("ServerActivity", line);
handler.post(new Runnable() {
@Override
public void run() {
if (line.equals("next")){
simulateKey(22);
}
if (line.equals("beack")){
simulateKey(21);
}
if (line.equals("up")){
simulateKey(19);
}
if (line.equals("down")){
simulateKey(20);
}
if (line.equals("ok")){
simulateKey(23);
}
if (line.equals("power")){
simulateKey(170);
}
if (line.equals("exit")){
simulateKey(4);
}
if (line.equals("vol_m")){
simulateKey(25);
}
if (line.equals("vol_up")){
simulateKey(24);
}
if (line.equals("menu")){
simulateKey(82);
}
if (line.equals("left")){
simulateKey(88);
}
if (line.equals("right")){
simulateKey(87);
}
if (line.equals("home")){
simulateKey(3);
}
if (line.equals("close")){
simulateKey(4);
}
// Log.d("ServerActivity", line);
}
});
}
break;
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
}
});
e.printStackTrace();
}
}
} else {
handler.post(new Runnable() {
@Override
public void run() {
}
});
}
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
}
});
e.printStackTrace();
}
}
}
private String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress().toString(); }
}
}
} catch (SocketException ex) {
Log.e("ServerActivity", ex.toString());
}
return null;
}
public void simulateKey(final int KeyCode) {
new Thread() {
@Override
public void run() {
try {
Instrumentation inst = new Instrumentation();
inst.sendKeyDownUpSync(KeyCode);
} catch (Exception e) {
Log.e("Exception when sendKeyDownUpSync", e.toString());
}
}
}.start();
}
}
Client
public class ClientActivity extends Activity {
String comand = "Жду команду";
private Button right, left, up, dn, menu, pow, min, plus, ok, sw_l, sw_r, close, home;
private String serverIpAddress = "";
String serverIp;
Socket socket;
private boolean connected = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.client);
final WifiManager manager = (WifiManager) super.getSystemService(WIFI_SERVICE);
final DhcpInfo dhcp = manager.getDhcpInfo();
serverIp = Formatter.formatIpAddress(dhcp.gateway);
if (!connected) {
serverIpAddress = serverIp;
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
right = (Button) findViewById(R.id.btn_right);
left = (Button) findViewById(R.id.btn_left);
up= (Button) findViewById(R.id.btn_up);
dn= (Button) findViewById(R.id.btn_dn);
menu= (Button) findViewById(R.id.btn_menu);
pow= (Button) findViewById(R.id.btn_pow);
min= (Button) findViewById(R.id.btn_min);
plus= (Button) findViewById(R.id.btn_plus);
ok= (Button) findViewById(R.id.btn_ok);
sw_l= (Button) findViewById(R.id.btn_sw_left);
sw_r= (Button) findViewById(R.id.btn_sw_rig);
close = (Button) findViewById(R.id.btn_close);
home= (Button) findViewById(R.id.btn_home);
Log.e("KeyEvent.KEYCODE_HOME", String.valueOf(KeyEvent.KEYCODE_HOME));
right.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "next";
}});
left.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "beack";
}});
up.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "up";
}});
dn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "down";
}});
menu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "menu";
}});
pow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "power";
}});
min.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "vol_m";
}});
plus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "vol_up";
}});
ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "ok";
}});
sw_l.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "left";
}});
sw_r.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "right";
}});
home.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "home";
}});
close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
comand = "close";
}});
}
public class ClientThread implements Runnable {
public void run() {
try {
InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
Log.d("ClientActivity", "C: Connecting...");
socket = new Socket(serverAddr, 8080);
connected = true;
while (connected) {
try {
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket
.getOutputStream())), true);
if(out.checkError())
{Log.d("ClientActivity", "Error transmitting data");
throw new Exception("Error transmitting data.");
}
if (comand.equals("next")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("beack")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("up")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("down")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("ok")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("power")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("exit")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("vol_m")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("vol_up")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("menu")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("left")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("right")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("home")){
out.println(comand);
comand = "Жду";
}
if (comand.equals("close")){
out.println(comand);
comand = "Жду";
}
} catch (Exception e) {
Log.e("ClientActivity", "S: Error", e);
}
}
socket.close();
Log.d("ClientActivity", "C: Closed.");
} catch (Exception e) {
Log.e("ClientActivity", "C: Error", e);
connected = false;
}
}
}
protected String wifiIpAddress(Context context) {
WifiManager wifiManager = (WifiManager) context.getSystemService(WIFI_SERVICE);
int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
// Convert little-endian to big-endianif needed
if (ByteOrder.nativeOrder().equals(ByteOrder.LITTLE_ENDIAN)) {
ipAddress = Integer.reverseBytes(ipAddress);
}
byte[] ipByteArray = BigInteger.valueOf(ipAddress).toByteArray();
String ipAddressString;
try {
ipAddressString = InetAddress.getByAddress(ipByteArray).getHostAddress();
} catch (UnknownHostException ex) {
Log.e("WIFIIP", "Unable to get host address.");
ipAddressString = null;
}
return ipAddressString;
}
}
1 answers
solution1
0 2014-09-17 18:48:05
If the client does not disconnect the server stays in this loop: while ((line = in.readLine()) != null) waiting and waiting for the next line. In the mean time no other client can connect.
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