/*
* This is a simple Android mobile client
* This application send any file to a remort server when the
* send button is pressed
* Author by Lak J Comspace
*/
package lakj.comspace.simpleclient;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class SimpleClientActivity extends Activity {
private Socket client;
private FileInputStream fileInputStream;
private BufferedInputStream bufferedInputStream;
private OutputStream outputStream;
private Button button;
private TextView text;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button = (Button) findViewById(R.id.button1); //reference to the send button
text = (TextView) findViewById(R.id.textView1); //reference to the text view
//Button press event listener
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
File file = new File("/mnt/sdcard/input.jpg"); //create file instance
try {
client = new Socket("10.0.2.2", 4444);
byte[] mybytearray = new byte[(int) file.length()]; //create a byte array to file
fileInputStream = new FileInputStream(file);
bufferedInputStream = new BufferedInputStream(fileInputStream);
bufferedInputStream.read(mybytearray, 0, mybytearray.length); //read the file
outputStream = client.getOutputStream();
outputStream.write(mybytearray, 0, mybytearray.length); //write file to the output stream byte by byte
outputStream.flush();
bufferedInputStream.close();
outputStream.close();
client.close();
text.setText("File Sent");
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
/*
* This is a simple server application
* This server receive a file from a Android client and save it in a given place.
* Author by Lak J Comspace
*/
package simpleserver;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class Main {
private static ServerSocket serverSocket;
private static Socket clientSocket;
private static InputStream inputStream;
private static FileOutputStream fileOutputStream;
private static BufferedOutputStream bufferedOutputStream;
private static int filesize = 10000000; // filesize temporary hardcoded
private static int bytesRead;
private static int current = 0;
public static void main(String[] args) throws IOException {
serverSocket = new ServerSocket(4444); //Server socket
System.out.println("Server started. Listening to the port 4444");
clientSocket = serverSocket.accept();
byte[] mybytearray = new byte[filesize]; //create byte array to buffer the file
inputStream = clientSocket.getInputStream();
fileOutputStream = new FileOutputStream("D:\\output.jpg");
bufferedOutputStream = new BufferedOutputStream(fileOutputStream);
System.out.println("Receiving...");
//following lines read the input slide file byte by byte
bytesRead = inputStream.read(mybytearray, 0, mybytearray.length);
current = bytesRead;
do {
bytesRead = inputStream.read(mybytearray, current, (mybytearray.length - current));
if (bytesRead >= 0) {
current += bytesRead;
}
} while (bytesRead > -1);
bufferedOutputStream.write(mybytearray, 0, current);
bufferedOutputStream.flush();
bufferedOutputStream.close();
inputStream.close();
clientSocket.close();
serverSocket.close();
System.out.println("Sever recieved the file");
}
}
/*
* This is a simple Android mobile client
* This application read any string messege typed on the text field and
* send it to the server when the Send button is pressed
* Author by Lak J Comspace
*/
package lakj.comspace.simpleclient;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class SimpleClientActivity extends Activity {
private Socket client;
private PrintWriter printwriter;
private EditText textField;
private Button button;
private String messsage;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textField = (EditText) findViewById(R.id.editText1); //reference to the text field
button = (Button) findViewById(R.id.button1); //reference to the send button
//Button press event listener
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
messsage = textField.getText().toString(); //get the text message on the text field
textField.setText(""); //Reset the text field to blank
try {
client = new Socket("10.0.2.2", 4444); //connect to server
printwriter = new PrintWriter(client.getOutputStream(),true);
printwriter.write(messsage); //write the message to output stream
printwriter.flush();
printwriter.close();
client.close(); //closing the connection
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
/*
* This is a simple server application
* This server receive a string message from the Android mobile phone
* and show it on the console.
* Author by Lak J Comspace
*/
package simpleserver;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class Main {
private static ServerSocket serverSocket;
private static Socket clientSocket;
private static InputStreamReader inputStreamReader;
private static BufferedReader bufferedReader;
private static String message;
public static void main(String[] args) {
try {
serverSocket = new ServerSocket(4444); //Server socket
} catch (IOException e) {
System.out.println("Could not listen on port: 4444");
}
System.out.println("Server started. Listening to the port 4444");
while (true) {
try {
clientSocket = serverSocket.accept(); //accept the client connection
inputStreamReader = new InputStreamReader(clientSocket.getInputStream());
bufferedReader = new BufferedReader(inputStreamReader); //get the client message
message = bufferedReader.readLine();
System.out.println(message);
inputStreamReader.close();
clientSocket.close();
} catch (IOException ex) {
System.out.println("Problem in message reading");
}
}
}
}
