How to send a 'filename' and a byte representation of a file

Question

Hey
I have this very simpel program, the logic is.. Client sends a file to a server which stores the file... VERY SIMPEL!
But what i wanna do is to send the filename as well, so the server can name the file dynamically based on the source file received
My code looks like this now..
Server code
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package serverreceivefile;
import java.io.*;
import java.net.*;
* @author Maul
public class ServerReceiveFile {
     * @param args the command line arguments
    public static void main(String[] args) throws IOException {
        System.out.println("Server is starting../");
        //Create a server socket that listens for incoming connection
        //request on port 10000
        ServerSocket ss = new ServerSocket(10000);
        while(true){
         // Listen for incoming connection requests from client
         // programs, establish a connection, and return a Socket
         // object that represents this connection.
            Socket s = ss.accept();
            System.out.println("Accepting connection.../");
            // Start a thread to handle connection
            new ServerThread(s).start();
class ServerThread extends Thread{
    private Socket s;
    ServerThread(Socket s){
        this.s = s;
    @Override
    public void run(){
        BufferedInputStream bs = null;
        BufferedOutputStream bos = null;
        try {
          // Create an input stream reader that chains to the socket's
          // byte-oriented input stream. The input stream reader
          // converts bytes read from the socket to characters. The
          // conversion is based on the platform's default character
          // set.
          bs = new BufferedInputStream(s.getInputStream());
          bos = new BufferedOutputStream(new FileOutputStream("filecopy.txt"));
          int i = 0;
          while((i = bs.read()) != -1){
              bos.write(i);
          bs.close();
          bos.close();
          s.close();
          } catch (IOException ie){
        System.exit(0);
}Client code
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package serverclientsendfile;
import java.io.*;
import java.net.*;
* @author Maul
public class ServerClientSendFile {
     * @param args the command line arguments
    public static void main(String[] args) throws FileNotFoundException
        String host = "localhost";
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(
                "file.txt"));
        Socket s = null;
        try {
            s = new Socket(InetAddress.getByName(host), 10000);
            // Create an input stream reader that chains to the socket's
            // byte-oriented input stream. The input stream reader
            // converts bytes read from the socket to characters. The
            // conversion is based on the platform's default character
            // set.
            BufferedOutputStream bos = new BufferedOutputStream(s.getOutputStream());
            int c;
            while((c = bis.read()) != -1){
                bos.write(c);
            bis.close();
            bos.close();
        } catch (IOException ie){
}As you can see the server 'hard codes' the filename of the received file from the client..

Answer 1

Hi DJHingapus,
If you don't want to build a dialog scenario between client and server, you may use a fixed length header which holds the name of the file to send. The stream will be composed with the header immediately followed by the binaries of the file.