I'm trying to send a file from my PC to my Android Phone via the LAN.
Client (sender, PC):
public class Client {
public static void main(String[] args) {
String host = "192.168.0.108"; //IP of phone (I know, hardcoding is evil...)
int port = 19999;
String TimeStamp;
Socket con;
File f = new File("/home/sebastian/test");
try {
InetAddress address = InetAddress.getByName(host);
con = new Socket(address, port);
} catch (IOException e) {
e.printStackTrace();
return;
}
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try {
BufferedInputStream fis = new BufferedInputStream(new FileInputStream(f));
BufferedOutputStream bos = new BufferedOutputStream(con.getOutputStream());
int i;
System.out.println("Starting transmission");
while ((i = fis.read()) != -1) {
bos.write(i);
}
System.out.println("Finished");
bos.flush();
fis.close();
bos.close();
} catch (IOException e) {
e.printStackTrace();
}}
});
t.start();
}
}
Server (Receiver, phone):
class Server extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startserver();
}
private void startserver() {
try {
socketl = new ServerSocket(port, 0, InetAddress.getByName("192.168.0.108"));
Thread t = new Thread (new Runnable() {
@SuppressLint("SdCardPath")
@Override
public void run() {
while (true) {
try {
connection = socketl.accept();
BufferedInputStream is = new BufferedInputStream(connection.getInputStream());
InputStreamReader isr = new InputStreamReader(is);
instr = new StringBuffer();
int i;
File f = new File("/sdcard/jaisb/streamtest");
f.delete();
f.createNewFile();
Log.d("log", "file created");
FileOutputStream fos = new FileOutputStream(f);
while ((i = isr.read()) != -1) {
fos.write(i);
}
Log.d("log", "file written");
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
t.start();
}
}
If I make a textfile called test in my homedir, it wokrs fine, the file arrives without errors... However, if I replace the text by other media (namely picures and music (I've tried JPG and MP3)), the files are corrupted.
Comparing them with the original in hexedit, i noticed that when sending the music file, the problem was that some bytes got lost; the first few bytes of the file were OK, but then it started losing bytes...
When sending a JPG, most bytes were wrong. Even the first four bytes changed from FF D8 FF E0 to FD FD FD FD.
What am I doing wrong? How can I send non-text files via the local network?
