File transfer via socket problem (with source code)

Question

I have a problem with this simple client/server filetransfer program. When I run it, only half the file is transfered via the net? Can someone point out to me why this is happening?
Client:
import java.net.*;
import java.io.*;
     public class Client {
     public static void main(String[] args) {
          // IPadressen til server
          String host = "127.0.0.1";
          int port = 4545;
          //Lager streams
          BufferedInputStream fileIn = null;
          BufferedOutputStream out = null;
          // Henter filen vi vil sende over sockets
          File file = new File("c:\\temp\\fileiwanttosend.jpg");
// Sjekker om filen fins
          if (!file.exists()) {
          System.out.println("File doesn't exist");
          System.exit(0);
          try{
          // Lager ny InputStream
          fileIn = new BufferedInputStream(new FileInputStream(file));
          }catch(IOException eee) {System.out.println("Problem, kunne ikke lage fil"); }
          try{
          // Lager InetAddress
          InetAddress adressen = InetAddress.getByName(host);
          try{
          System.out.println("- Lager Socket..........");
          // �pner socket
          Socket s = new Socket(adressen, port);
          System.out.println("- Socket klar.........");
          // Setter outputstream til socket
          out = new BufferedOutputStream(s.getOutputStream());
          // Leser buffer inn i tabell
          byte[] buffer = new byte[1024];
          int numRead;
          while( (numRead = fileIn.read(buffer)) >= 0) {
          // Skriver bytes til OutputStream fra 0 til totalt antall bytes
          System.out.println("Copies "+fileIn.read(buffer)+" bytes");
          out.write(buffer, 0, numRead);
          // Flush - sender fil
          out.flush();
          // Lukker OutputStream
          out.close();
          // Lukker InputStrean
          fileIn.close();
          // Lukker Socket
          s.close();
          System.out.println("File is sent to: "+host);
          catch (IOException e) {
          }catch(UnknownHostException e) {
          System.err.println(e);
Server:
import java.net.*;
import java.io.*;
public class Server {
     public static void main(String[] args) {
// Portnummer m� v�re det samme p� b�de klient og server
int port = 4545;
     try{
          // Lager en ServerSocket
          ServerSocket server = new ServerSocket(port);
          // Lager to socketforbindelser
          Socket forbindelse1 = null;
          Socket forbindelse2 = null;
     while (true) {
     try{
          forbindelse1 = server.accept();
          System.out.println("Server accepts");
          BufferedInputStream inn = new BufferedInputStream(forbindelse1.getInputStream());
          BufferedOutputStream ut = new BufferedOutputStream(new FileOutputStream(new File("c:\\temp\\file.jpg")));
          byte[] buff = new byte[1024];
          int readMe;
          while( (readMe = inn.read(buff)) >= 0) {
          // Skriver filen til disken ut fra input stream
          ut.write(buff, 0, readMe);
          // Lukker ServerSocket
          forbindelse1.close();
          // Lukker InputStream
          inn.close();
          // flush - sender data ut p� nettet
          ut.flush();
          // Lukker OutputStream
          ut.close();
          System.out.println("File received");
          }catch(IOException e) {System.out.println("En feil har skjedd: " + e.getMessage());}
          finally {
               try {
               if (forbindelse1 != null) forbindelse1.close();
               }catch(IOException e) {}
}catch(IOException e) {
System.err.println(e);
}

Answer 1

Hi!!
The problem is at this line:
System.out.println("Copies "+fileIn.read(buffer)+" bytes");
Just comment out this line of code and see the difference. This line of code causes another "read" statement to be executed, but you are writing only the data read from the first read statement which causes approximately half the file to be send to the server.