Following options resulting shown error
Android App + Multicast + Tethering On + Cell Data Off
If I connected to wifi router, no errors happen. What do I wrong or is android+multicast+tethering impossible?
public class Multicast {
final static String INET_ADDR = "224.0.0.1";
final static int PORT = 8888;
private Context mContext;
public Multicast(Context context) {
mContext = context;
}
public static NetworkInterface getWlanEth() {
final String TAG = "NetworkInterface";
Enumeration<NetworkInterface> enumeration = null;
try {
enumeration = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
}
NetworkInterface wlan0 = null;
StringBuilder sb = new StringBuilder();
while (enumeration.hasMoreElements()) {
wlan0 = enumeration.nextElement();
sb.append(wlan0.getName() + " ");
if (wlan0.getName().equals("wlan0")) {
return wlan0;
}
}
return null;
}
#TargetApi(Build.VERSION_CODES.KITKAT)
public void startMulticastServer() {
Thread sendThread = new Thread(new Runnable() {
DatagramSocket serverSocket;
#Override
public void run() {
try {
if (serverSocket == null) {
serverSocket = new DatagramSocket(null);
serverSocket.setReuseAddress(true);
serverSocket.setBroadcast(true);
serverSocket.bind(new InetSocketAddress(PORT));
serverSocket.setSoTimeout(15000);
}
for (int i = 0; i < 5; i++) {
String msg = "Sent message no " + i;
InetAddress group = InetAddress.getByName(INET_ADDR);
DatagramPacket msgPacket = new DatagramPacket(msg.getBytes(),
msg.getBytes().length, group, PORT);
serverSocket.send(msgPacket);
String TAG = "Multicast-send";
Log.i(TAG, "Socket 1 send msg: " + msg);
Thread.sleep(500);
}
} catch (IOException ex) {
ex.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
try {
serverSocket.close();
} catch (Exception e) {
e.printStackTrace();
}
}
});
sendThread.start();
}
public void startMulticastClient() {
Thread getThread = new Thread(new Runnable() {
byte[] buf = new byte[256];
#TargetApi(Build.VERSION_CODES.KITKAT)
#Override
public void run() {
//Acquire the MulticastLock
WifiManager wifi = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
MulticastLock multicastLock = wifi.createMulticastLock("multicastLock");
multicastLock.setReferenceCounted(true);
multicastLock.acquire();
// Create a new Multicast socket (that will allow other sockets/programs
// to join it as well.
try {
MulticastSocket clientSocket = new MulticastSocket(PORT);
//Joint the Multicast group.
clientSocket.joinGroup(new InetSocketAddress(InetAddress.getByName(INET_ADDR), PORT), getWlanEth());
clientSocket.setLoopbackMode(true);
while (true) {
// Receive the information and print it.
DatagramPacket msgPacket = new DatagramPacket(buf, buf.length);
clientSocket.receive(msgPacket);
String msg = new String(msgPacket.getData());
String TAG = "Multicast-get";
Log.i(TAG, "Socket 1 received msg: " +msgPacket.getAddress()+" : "+ InetAddress.getByName(INET_ADDR) + " : " +msg);
}
} catch (IOException ex) {
multicastLock.release();
ex.printStackTrace();
}
multicastLock.release();
}
});
getThread.start();
}
}
Related
I want the app to record video or take photos at 30 fps and save them under one name on the server so that one photo changes and thus becomes a video. I already found the code that makes the server. I spent the whole day looking for an answer to my question and couldn't find anything, so I decided to ask. This should work as an IP Webcam application. Can this be done at all? Thanks for any help.
Code to make a server:
public class MainActivity extends AppCompatActivity {
EditText welcomeMsg;
TextView infoIp;
TextView infoMsg;
String msgLog = "";
ServerSocket httpServerSocket;
#SuppressLint("SetTextI18n")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
welcomeMsg = (EditText) findViewById(R.id.welcomemsg);
infoIp = (TextView) findViewById(R.id.infoip);
infoMsg = (TextView) findViewById(R.id.msg);
infoIp.setText(getIpAddress() + ":"
+ HttpServerThread.HttpServerPORT + "\n");
HttpServerThread httpServerThread = new HttpServerThread();
httpServerThread.start();
}
#Override
protected void onDestroy() {
super.onDestroy();
if (httpServerSocket != null) {
try {
httpServerSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
private class HttpServerThread extends Thread {
static final int HttpServerPORT = 8888;
#Override
public void run() {
Socket socket = null;
try {
httpServerSocket = new ServerSocket(HttpServerPORT);
while(true){
socket = httpServerSocket.accept();
HttpResponseThread httpResponseThread =
new HttpResponseThread(
socket,
welcomeMsg.getText().toString());
httpResponseThread.start();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class HttpResponseThread extends Thread {
Socket socket;
String h1;
HttpResponseThread(Socket socket, String msg){
this.socket = socket;
h1 = msg;
}
#Override
public void run() {
BufferedReader is;
PrintWriter os;
String request;
try {
is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
request = is.readLine();
os = new PrintWriter(socket.getOutputStream(), true);
String response =
"<html><head></head>" +
"<body>" +
"<h1>" + h1 + "</h1>" +
"</body></html>";
os.print("HTTP/1.0 200" + "\r\n");
os.print("Content type: text/html" + "\r\n");
os.print("Content length: " + response.length() + "\r\n");
os.print("\r\n");
os.print(response + "\r\n");
os.flush();
socket.close();
msgLog += "Request of " + request
+ " from " + socket.getInetAddress().toString() + "\n";
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
infoMsg.setText(msgLog);
}
});
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return;
}
}
}
Hai friends i am new in Socket.
Now I implement a Chat app using Socket. I am testing with single Server SA and Client CA and CB. The Socket connection, chat and disconnect are working good.
But my problem is when client(CA) disconnect from server socket server not getting instant notification. Once CA reconnect again with new name CAA server will notify CA removed, and CAA connected.
my point is server must get instant notification when client CA disconnect socket.
This is my server Activity:
public class ServerMain extends ActionBarActivity {
static final int SocketServerPORT = 8080;
TextView infoIp, infoPort, chatMsg;
String msgLog = "";
List<ChatClient> userList;
ServerSocket serverSocket;
private Timer mTimer1;
private TimerTask mTt1;
private Handler mTimerHandler = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
infoIp = (TextView) findViewById(R.id.infoip);
infoPort = (TextView) findViewById(R.id.infoport);
chatMsg = (TextView) findViewById(R.id.chatmsg);
infoIp.setText(getIpAddress());
userList = new ArrayList<ChatClient>();
ChatServerThread chatServerThread = new ChatServerThread();
chatServerThread.start();
}
#Override
protected void onDestroy() {
super.onDestroy();
if (serverSocket != null) {
try {
serverSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class ChatServerThread extends Thread {
#Override
public void run() {
Socket socket = null;
try {
serverSocket = new ServerSocket(SocketServerPORT);
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
infoPort.setText("I'm waiting here: "
+ serverSocket.getLocalPort());
}
});
while (true) {
socket = serverSocket.accept();
ChatClient client = new ChatClient();
userList.add(client);
ConnectThread connectThread = new ConnectThread(client, socket);
connectThread.start();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
private class ConnectThread extends Thread {
Socket socket;
ChatClient connectClient;
String msgToSend = "";
ConnectThread(ChatClient client, Socket socket) {
connectClient = client;
this.socket = socket;
client.socket = socket;
client.chatThread = this;
}
#Override
public void run() {
DataInputStream dataInputStream = null;
DataOutputStream dataOutputStream = null;
try {
dataInputStream = new DataInputStream(socket.getInputStream());
dataOutputStream = new DataOutputStream(socket.getOutputStream());
String n = dataInputStream.readUTF();
connectClient.name = n;
msgLog += connectClient.name + " connected#" +
connectClient.socket.getInetAddress() +
":" + connectClient.socket.getPort() + "\n";
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
chatMsg.setText(msgLog);
}
});
dataOutputStream.writeUTF("Welcome " + n + "\n");
dataOutputStream.flush();
broadcastMsg(n + " join our chat.\n");
while (true) {
if (dataInputStream.available() > 0) {
String newMsg = dataInputStream.readUTF();
msgLog += n + ": " + newMsg;
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
chatMsg.setText(msgLog);
}
});
broadcastMsg(n + ": " + newMsg);
}
if (!msgToSend.equals("")) {
dataOutputStream.writeUTF(msgToSend);
dataOutputStream.flush();
msgToSend = "";
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
userList.remove(connectClient);
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
if (connectClient.socket.isClosed()) {
Toast.makeText(ServerMain.this,
connectClient.name + " removed.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(ServerMain.this,
"not removed", Toast.LENGTH_LONG).show();
}
Toast.makeText(ServerMain.this,
connectClient.name + " removed.", Toast.LENGTH_LONG).show();
msgLog += "-- " + connectClient.name + " leaved\n";
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
chatMsg.setText(msgLog);
}
});
broadcastMsg("-- " + connectClient.name + " leaved\n");
}
});
}
}
private void sendMsg(String msg) {
msgToSend = msg;
}
}
private void broadcastMsg(String msg) {
for (int i = 0; i < userList.size(); i++) {
userList.get(i).chatThread.sendMsg(msg);
msgLog += "- send to " + userList.get(i).name + "\n";
}
ServerMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
chatMsg.setText(msgLog);
}
});
}
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
class ChatClient {
String name;
Socket socket;
ConnectThread chatThread;
}
}
This is my Client Activity:
public class ClientMain extends ActionBarActivity {
static final int SocketServerPORT = 8080;
LinearLayout loginPanel, chatPanel;
EditText editTextUserName, editTextAddress;
Button buttonConnect;
TextView chatMsg, textPort;
EditText editTextSay;
Button buttonSend;
Button buttonDisconnect;
String msgLog = "";
Socket socket = null;
ChatClientThread chatClientThread = null;
DataOutputStream dataOutputStream = null;
DataInputStream dataInputStream = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loginPanel = (LinearLayout) findViewById(R.id.loginpanel);
chatPanel = (LinearLayout) findViewById(R.id.chatpanel);
editTextUserName = (EditText) findViewById(R.id.username);
editTextAddress = (EditText) findViewById(R.id.address);
textPort = (TextView) findViewById(R.id.port);
textPort.setText("port: " + SocketServerPORT);
buttonConnect = (Button) findViewById(R.id.connect);
buttonDisconnect = (Button) findViewById(R.id.disconnect);
chatMsg = (TextView) findViewById(R.id.chatmsg);
buttonConnect.setOnClickListener(buttonConnectOnClickListener);
buttonDisconnect.setOnClickListener(buttonDisconnectOnClickListener);
editTextSay = (EditText) findViewById(R.id.say);
buttonSend = (Button) findViewById(R.id.send);
buttonSend.setOnClickListener(buttonSendOnClickListener);
}
OnClickListener buttonDisconnectOnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
if (chatClientThread == null) {
Log.e("chatClientThread", "null");
return;
} else {
chatClientThread.disconnect();
}
}
};
OnClickListener buttonSendOnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
if (editTextSay.getText().toString().equals("")) {
return;
}
if (chatClientThread == null) {
return;
}
chatClientThread.sendMsg(editTextSay.getText().toString() + "\n");
}
};
OnClickListener buttonConnectOnClickListener = new OnClickListener() {
#Override
public void onClick(View v) {
String textUserName = editTextUserName.getText().toString();
if (textUserName.equals("")) {
Toast.makeText(ClientMain.this, "Enter User Name",
Toast.LENGTH_LONG).show();
return;
}
String textAddress = editTextAddress.getText().toString();
if (textAddress.equals("")) {
Toast.makeText(ClientMain.this, "Enter Addresse",
Toast.LENGTH_LONG).show();
return;
}
msgLog = "";
chatMsg.setText(msgLog);
loginPanel.setVisibility(View.GONE);
chatPanel.setVisibility(View.VISIBLE);
chatClientThread = new ChatClientThread(
textUserName, textAddress, SocketServerPORT);
chatClientThread.start();
}
};
private class ChatClientThread extends Thread {
String name;
String dstAddress;
int dstPort;
String msgToSend = "";
boolean goOut = false;
ChatClientThread(String name, String address, int port) {
this.name = name;
dstAddress = address;
dstPort = port;
}
#Override
public void run() {
try {
socket = new Socket(dstAddress, dstPort);
dataOutputStream = new DataOutputStream(
socket.getOutputStream());
dataInputStream = new DataInputStream(socket.getInputStream());
dataOutputStream.writeUTF(name);
dataOutputStream.flush();
while (!goOut) {
if (dataInputStream.available() > 0) {
msgLog += dataInputStream.readUTF();
ClientMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
chatMsg.setText(msgLog);
}
});
}
if (!msgToSend.equals("")) {
dataOutputStream.writeUTF(msgToSend);
dataOutputStream.flush();
msgToSend = "";
}
}
} catch (UnknownHostException e) {
e.printStackTrace();
final String eString = e.toString();
ClientMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(ClientMain.this, eString, Toast.LENGTH_LONG).show();
}
});
} catch (IOException e) {
e.printStackTrace();
final String eString = e.toString();
ClientMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(ClientMain.this, eString, Toast.LENGTH_LONG).show();
}
});
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
ClientMain.this.runOnUiThread(new Runnable() {
#Override
public void run() {
loginPanel.setVisibility(View.VISIBLE);
chatPanel.setVisibility(View.GONE);
}
});
}
}
private void sendMsg(String msg) {
msgToSend = msg;
}
private void disconnect() {
goOut = true;
}
}
}
I am trying to transmit a continuous stream of data to multiple devices over a portable hotspot connection using sockets.
I am facing two problems:
The message only gets displayed to the client AFTER all the messages are displayed in msg TextView on the server end. So if I use an infinite while(true) loop instead of for(int i = 0; i < 1000; i++), in ServerSocketReplyThread, the message never gets transmitted, and the client eventually crashes
I am unable to connect another client to the server until all the messages have been transmitted to the first client.
How do I structure the code to ensure simultaneous, real-time transmission to multiple clients?
Here's what the code looks like:
I am using an activity called Transmit activity, where I am instantiating the msg Textview, which replays the sent messages, and a server object.
msg = (TextView) findViewById(R.id.server_replayed_messages);
Server server = new Server(this);
The Server class is as follows:
public class Server {
TransmitActivity activity;
ServerSocket serverSocket;
String message = "";
static final int socketServerPORT = 8080;
ArrayList<Socket> socketList = new ArrayList<Socket>();
public Server(TransmitActivity a) {
this.activity = a;
Thread socketServerThread = new Thread(new SocketServerThread());
socketServerThread.start();
}
public int getPort() {
return socketServerPORT;
}
public void onDestroy() {
if (serverSocket != null) {
try {
serverSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class SocketServerThread extends Thread {
int count = 0;
#Override
public void run() {
try {
// create ServerSocket using specified port
serverSocket = new ServerSocket(socketServerPORT);
while (true) {
// block the call until connection is created and return
// Socket object
Socket socket = serverSocket.accept();
count++;
message += "#" + count + " from "
+ socket.getInetAddress() + ":"
+ socket.getPort() + "\n";
activity.runOnUiThread(new Runnable() {
#Override
public void run() {
activity.msg.setText(message);
}
});
SocketServerReplyThread socketServerReplyThread =
new SocketServerReplyThread(socket, count);
socketServerReplyThread.run();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class SocketServerReplyThread extends Thread {
private Socket hostThreadSocket;
int cnt;
SocketServerReplyThread(Socket socket, int c) {
hostThreadSocket = socket;
cnt = c;
}
#Override
public void run() {
OutputStream outputStream;
for(int i = 0; i < 1000; i++) {
String msgReply = DateFormat.getDateTimeInstance().format(new Date());
try {
outputStream = hostThreadSocket.getOutputStream();
PrintStream printStream = new PrintStream(outputStream);
printStream.print(msgReply);
printStream.flush();
message += "replayed: " + msgReply + "\n";
activity.runOnUiThread(new Runnable() {
#Override
public void run() {
activity.msg.setText(message);
}
});
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
message += "Something wrong in SocketServerReplyThread! " + e.toString() + "\n";
}
activity.runOnUiThread(new Runnable() {
#Override
public void run() {
activity.msg.setText(message);
}
});
}
}
}
}
On the client side I have a ReceiveActivity, where I am using the following code when a "Connect" button is clicked:
Client myClient = new Client(editTextAddress.getText()
.toString(), Integer.parseInt(editTextPort
.getText().toString()), response);
myClient.execute();
The Client class is as follows:
public class Client extends AsyncTask<Void, Void, Void> {
String dstAddress;
int dstPort;
String response = "";
TextView textResponse;
Client(String addr, int port, TextView textResponse) {
dstAddress = addr;
dstPort = port;
this.textResponse = textResponse;
}
#Override
protected Void doInBackground(Void... arg0) {
Socket socket = null;
try {
socket = new Socket(dstAddress, dstPort);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int bytesRead;
InputStream inputStream = socket.getInputStream();
/*
* notice: inputStream.read() will block if no data return
*/
while ((bytesRead = inputStream.read(buffer)) != -1) {
byteArrayOutputStream.write(buffer, 0, bytesRead);
response += byteArrayOutputStream.toString("UTF-8");
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "UnknownHostException: " + e.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "IOException: " + e.toString();
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
#Override
protected void onPostExecute(Void result) {
textResponse.setText(response);
super.onPostExecute(result);
}
}
Any help would be much appreciated.
I made a simple prototype of a client-server application on Android
I managed to connect two clients to the server and the server can receive their messages. The problem now is that I can't seem to broadcast/receive the messages to other clients.
I try to broadcast the received message through a for loop in the Server class:
private void broadcastMessage(String message) {
for (int i = 0, j = clients.size(); i <= j; i++) {
PrintWriter out = null;
Socket socket = clients.get(i);
try {
out = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(socket.getOutputStream())), true);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// WHERE YOU ISSUE THE COMMANDS
out.println(message);
Log.d("SERVER Loop", "Broadcasting messages...");
out.close();
}
Log.d("SERVER", "Message Brodcasted");
}
This I then try to receive through a listener in the Client class :
public class ClientThreadListener implements Runnable {
protected Socket serverSocket = null;
protected String mMsgFromServer;
public ClientThreadListener(Socket serverSocket) {
this.serverSocket = serverSocket;
}
public void run() {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
serverSocket.getInputStream()));
while ((mMsgFromServer = in.readLine()) != null) {
Log.d("MESSAGE FROM SERVER: ", mMsgFromServer);
handler.post(new Runnable() {
#Override
public void run() {
msgFromOtherClients.append('\n'
+ "Message From Server: " + mMsgFromServer);
}
});
}
} catch (Exception e) {
Log.e("ClientListener", "C: Error", e);
connected = false;
}
}
}
I don't get any errors or force closes though. Forgive me I know it is very messy but please bear with me and please focus on the issue at hand instead :D
Here is the full code for the Server class
public class Server extends Activity {
private TextView serverStatus;
// DEFAULT IP
public static String SERVERIP = "10.0.2.15";
// DESIGNATE A PORT
public static final int SERVERPORT = 8080;
private Handler handler = new Handler();
private ServerSocket serverSocket;
private String mMsgFromClient;
private MultiThreadedServer server;
private ArrayList<Socket> clients = new ArrayList<Socket>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.server);
serverStatus = (TextView) findViewById(R.id.server_status);
// SERVERIP = getLocalIpAddress();
server = new MultiThreadedServer(8080);
new Thread(server).start();
}
public class MultiThreadedServer implements Runnable {
protected int serverPort = 8080;
protected ServerSocket serverSocket = null;
protected boolean isStopped = false;
protected Thread runningThread = null;
public MultiThreadedServer(int port) {
this.serverPort = port;
}
public void run() {
synchronized (this) {
this.runningThread = Thread.currentThread();
}
openServerSocket();
while (!isStopped()) {
Socket clientSocket = null;
try {
clientSocket = this.serverSocket.accept();
clients.add(clientSocket);
} catch (IOException e) {
if (isStopped()) {
Log.d("SERVER TEXT", "Server Stopped.");
return;
}
throw new RuntimeException(
"Error accepting client connection", e);
}
new Thread(new WorkerRunnable(clientSocket, this)).start();
}
Log.d("SERVER TEXT", "Server Stopped.");
}
private synchronized boolean isStopped() {
return this.isStopped;
}
public synchronized void stop() {
this.isStopped = true;
try {
this.serverSocket.close();
} catch (IOException e) {
throw new RuntimeException("Error closing server", e);
}
}
private void openServerSocket() {
try {
this.serverSocket = new ServerSocket(this.serverPort);
} catch (IOException e) {
throw new RuntimeException("Cannot open port 8080", e);
}
}
private void broadcastMessage(String message) {
for (int i = 0, j = clients.size(); i <= j; i++) {
PrintWriter out = null;
Socket socket = clients.get(i);
try {
out = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(socket.getOutputStream())), true);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// WHERE YOU ISSUE THE COMMANDS
out.println(message);
Log.d("SERVER Loop", "Broadcasting messages...");
out.close();
}
Log.d("SERVER", "Message Brodcasted");
}
}
public class WorkerRunnable implements Runnable {
protected Socket clientSocket = null;
protected String mMsgFromClient = null;
private UUID id;
public WorkerRunnable(Socket clientSocket, MultiThreadedServer server) {
this.clientSocket = clientSocket;
id = UUID.randomUUID();
}
public void run() {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
clientSocket.getInputStream()));
while ((mMsgFromClient = in.readLine()) != null) {
handler.post(new Runnable() {
#Override
public void run() {
serverStatus.append('\n'
+ "Message From Client ID " + getID()
+ ": " + mMsgFromClient);
}
});
}
Log.d("SERVERTEXT", "Proceed to broadcast");
server.broadcastMessage(mMsgFromClient);
} catch (IOException e) {
Handler handler = new Handler();
handler.post(new Runnable() {
#Override
public void run() {
serverStatus
.append('\n'
+ "Message From Client ID "
+ getID()
+ ": "
+ "Oops. Connection interrupted. Please reconnect your phones.");
}
});
e.printStackTrace();
}
}
private String getID() {
return id.toString();
}
}
}
Here is the full code for the Client class
public class Client extends Activity {
private EditText serverIp;
private EditText chatMsg;
private Button connectPhones;
private Button sendMsg;
private TextView msgFromOtherClients;
private String serverIpAddress = "";
private boolean connected = false;
private boolean willSendMsg = false;
private Handler handler = new Handler();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.client);
serverIp = (EditText) findViewById(R.id.server_ip);
connectPhones = (Button) findViewById(R.id.connect_phones);
connectPhones.setOnClickListener(connectListener);
chatMsg = (EditText) findViewById(R.id.chat_msg);
sendMsg = (Button) findViewById(R.id.send_msg);
sendMsg.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
willSendMsg = true;
}
});
msgFromOtherClients = (TextView) findViewById(R.id.msg_from_other_clients);
}
private OnClickListener connectListener = new OnClickListener() {
#Override
public void onClick(View v) {
if (!connected) {
serverIpAddress = serverIp.getText().toString();
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
}
};
public class ClientThread implements Runnable {
public void run() {
try {
InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
Log.d("ClientActivity", "C: Connecting...");
Socket socket = new Socket(serverAddr, Server.SERVERPORT);
connected = true;
Thread listener = new Thread(new ClientThreadListener(new Socket(serverAddr, Server.SERVERPORT)));
listener.start();
while (connected) {
if (willSendMsg) {
willSendMsg = false;
try {
Log.d("ClientActivity", "C: Sending command.");
PrintWriter out = new PrintWriter(
new BufferedWriter(new OutputStreamWriter(
socket.getOutputStream())), true);
// WHERE YOU ISSUE THE COMMANDS
out.println(chatMsg.getText().toString());
Log.d("ClientActivity", "C: Sent.");
} 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;
}
}
}
public class ClientThreadListener implements Runnable {
protected Socket serverSocket = null;
protected String mMsgFromServer;
public ClientThreadListener(Socket serverSocket) {
this.serverSocket = serverSocket;
}
public void run() {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
serverSocket.getInputStream()));
while ((mMsgFromServer = in.readLine()) != null) {
Log.d("MESSAGE FROM SERVER: ", mMsgFromServer);
handler.post(new Runnable() {
#Override
public void run() {
msgFromOtherClients.append('\n'
+ "Message From Server: " + mMsgFromServer);
}
});
}
} catch (Exception e) {
Log.e("ClientListener", "C: Error", e);
connected = false;
}
}
}
}
Your code has some issue that prevents it from working.
As already said in other answers, in your code you are closing the socket output stream right after sending the message to the client. call close() only out of your for message loop. Of course closing the socket in the client will have the same effect as closing it on the server. You must close the sockets only when client and server have finished talking. Closing it while transmitting data it's like hanging up the phone in the middle of a conversation.
Second, you create a new socket on the client side:
Log.d("ClientActivity", "C: Connecting...");
Socket socket = new Socket(serverAddr, Server.SERVERPORT);
but then you pass to the listener another, newly created, socket (I suppose this is not intended):
connected = true;
Thread listener = new Thread(new ClientThreadListener(new Socket(serverAddr, Server.SERVERPORT)));
listener.start();
Third, always call flush() on an output stream right after sending data, or the data will likely not be sent (the send methods will just enqueue your data in the sending buffer).
Last (This may not be useful to you since I don't know your ultimate goal), if you need to send and receive on sockets, 90% of the time it's better and easier to do this asinchronously, using separate threads for listening and sending.
If it still doesn't work, add here some output or log trace from logcat.
You need to move the line:
server.broadcastMessage(mMsgFromClient);
inside the while:
while ((mMsgFromClient = in.readLine()) != null) {
handler.post(new Runnable() {
#Override
public void run() {
serverStatus.append('\n'
+ "Message From Client ID " + getID()
+ ": " + mMsgFromClient);
}
});
// HERE
Log.d("SERVERTEXT", "Proceed to broadcast");
server.broadcastMessage(mMsgFromClient);
}
Otherwise, you'll only broadcast null.
EDIT: You should make sure that mMsgFromClient is not changed between posting the new Runnable and it actually executing. The best way is to initialize a field in the anonymous class with the current value, and log the value of that field instead.
EDIT2: Unless your server is supposed to close its connection to a client after sending it a broadcast message, you should use out.flush() instead of out.close() in the broadcastMessage method. It's preferrable that client connections are closed after a timeout, or just let the clients disconnect, again with a timeout.
Otherwise, your test will be very limited most of the times: a client connects and sends a message; then it receives its own message and the server closes the connection.
Please try to use AsyncTask in android which will create separate thread for communication with server.
I am working on a peer to peer to voice call application in Android for my college project. I found sample code for streaming the mic audio through UDP. That code will help me to stream the WAV file through UDP. But it doesn't play some files properly. And also that code doesn't stream mic audio.
Please help me.
public class UdpStream extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.udpstream);
Button btnSend = (Button)findViewById(R.id.btnSend);
btnSend.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d(LOG_TAG, "btnSend clicked");
SendAudio();
}
});
Button btnRecv = (Button)findViewById(R.id.btnRecv);
btnRecv.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d(LOG_TAG, "btnRecv clicked");
RecvAudio();
}
});
Button btnStrmic = (Button)findViewById(R.id.btnStrmic);
btnStrmic.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.d(LOG_TAG, "btnStrmic clicked");
SendMicAudio();
}
});
}
static final String LOG_TAG = "UdpStream";
static final String AUDIO_FILE_PATH = "/sdcard/1.wav";
static final int AUDIO_PORT = 2048;
static final int SAMPLE_RATE = 8000;
static final int SAMPLE_INTERVAL = 20; // milliseconds
static final int SAMPLE_SIZE = 2; // bytes per sample
static final int BUF_SIZE = SAMPLE_INTERVAL*SAMPLE_INTERVAL*SAMPLE_SIZE*2;
protected String host="localhost";
public void RecvAudio()
{
Thread thrd = new Thread(new Runnable() {
#Override
public void run()
{
Log.e(LOG_TAG, "start recv thread, thread id: "
+ Thread.currentThread().getId());
AudioTrack track = new AudioTrack(AudioManager.STREAM_MUSIC,
SAMPLE_RATE, AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT, BUF_SIZE,
AudioTrack.MODE_STREAM);
track.play();
try
{
DatagramSocket sock = new DatagramSocket(AUDIO_PORT);
byte[] buf = new byte[BUF_SIZE];
while(true)
{
DatagramPacket pack = new DatagramPacket(buf, BUF_SIZE);
sock.receive(pack);
Log.d(LOG_TAG, "recv pack: " + pack.getLength());
track.write(pack.getData(), 0, pack.getLength());
}
}
catch (SocketException se)
{
Log.e(LOG_TAG, "SocketException: " + se.toString());
}
catch (IOException ie)
{
Log.e(LOG_TAG, "IOException" + ie.toString());
}
} // end run
});
thrd.start();
}
Toast toast;
int port=3008;
public void SendAudio()
{
toast=Toast.makeText(getApplicationContext(), port + " : " + host , Toast.LENGTH_SHORT);
Thread thrd = new Thread(new Runnable() {
#Override
public void run()
{
Log.e(LOG_TAG, "start send thread, thread id: "
+ Thread.currentThread().getId());
long file_size = 0;
int bytes_read = 0;
int bytes_count = 0;
File audio = new File(AUDIO_FILE_PATH);
FileInputStream audio_stream = null;
file_size = audio.length();
byte[] buf = new byte[BUF_SIZE];
try
{
EditText d= (EditText) findViewById(R.id.txttohost);
host=d.getText().toString();
if(host=="")
{
port=2048;
host="localhost";
}
port=2048;
InetAddress addr = InetAddress.getByName(host);
toast.setText(port + " : " + addr.toString());
toast.show();
DatagramSocket sock = new DatagramSocket();
audio_stream = new FileInputStream(audio);
while(bytes_count < file_size)
{
bytes_read = audio_stream.read(buf, 0, BUF_SIZE);
DatagramPacket pack = new DatagramPacket(buf, bytes_read,
addr, port);
sock.send(pack);
bytes_count += bytes_read;
Log.d(LOG_TAG, "bytes_count : " + bytes_count);
Thread.sleep(SAMPLE_INTERVAL, 0);
}
}
catch (InterruptedException ie)
{
Log.e(LOG_TAG, "InterruptedException");
}
catch (FileNotFoundException fnfe)
{
Log.e(LOG_TAG, "FileNotFoundException");
}
catch (SocketException se)
{
Log.e(LOG_TAG, "SocketException");
}
catch (UnknownHostException uhe)
{
Log.e(LOG_TAG, "UnknownHostException");
}
catch (IOException ie)
{
Log.e(LOG_TAG, "IOException");
}
} // end run
});
thrd.start();
}
public void SendMicAudio()
{
Thread thrd = new Thread(new Runnable() {
#Override
public void run()
{
Log.e(LOG_TAG, "start SendMicAudio thread, thread id: "
+ Thread.currentThread().getId());
AudioRecord audio_recorder = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, SAMPLE_RATE,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT,
AudioRecord.getMinBufferSize(SAMPLE_RATE,
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT) * 10);
int bytes_read = 0;
int bytes_count = 0;
byte[] buf = new byte[BUF_SIZE];
try
{
InetAddress addr = InetAddress.getLocalHost();
DatagramSocket sock = new DatagramSocket();
while(true)
{
bytes_read = audio_recorder.read(buf, 0, BUF_SIZE);
DatagramPacket pack = new DatagramPacket(buf, bytes_read,
addr, AUDIO_PORT);
sock.send(pack);
bytes_count += bytes_read;
Log.d(LOG_TAG, "bytes_count : " + bytes_count);
Thread.sleep(SAMPLE_INTERVAL, 0);
}
}
catch (InterruptedException ie)
{
Log.e(LOG_TAG, "InterruptedException");
}
// catch (FileNotFoundException fnfe)
// {
// Log.e(LOG_TAG, "FileNotFoundException");
// }
catch (SocketException se)
{
Log.e(LOG_TAG, "SocketException");
}
catch (UnknownHostException uhe)
{
Log.e(LOG_TAG, "UnknownHostException");
}
catch (IOException ie)
{
Log.e(LOG_TAG, "IOException");
}
} // end run
});
thrd.start();
}
}
As for as concern with my question....
The Solution is Always while playing the Audio through out speaker will cause Some noise....
So i found the following two solution to fix that...
1) Play the audio through ear piece
audio_service.setSpeakerphoneOn(false);
audio_service.setMode(AudioManager.MODE_IN_CALL);
audio_service.setRouting(AudioManager.MODE_NORMAL,AudioManager.ROUTE_EARPIECE,
AudioManager.ROUTE_ALL);
2) Next way to do use Some Audio Codec for encoding and Decoding Your Audio to play that in noiseless..