send files through socket

[bbq]

Well I tried in a lot of ways to do that, but not always works.

If you have any idea about that and you have the secure and efective way to send files through socket I'll appreciate that.
This the code that I am using, it works well for the small files, but for the big ones don't work

Client

Code:

synchronized (Writing) {           
        try{
            FileInputStream f=new FileInputStream(up);
            byte bytesFile[]=new byte[f.available()];
            f.read(bytesFile);
            f.close();
            Writing.writeUTF(up.getName());
            Writing.flush();
            Writing.write(bytesFile);
            Writing.flush();

Server

Code:

 

      File dir=new File(Command.substring(5));
                    File n=new File(dir,reading.readUTF());                  
                    FileOutputStream nn=new FileOutputStream(n);
                    do{
                      byte bytesFile[]=new byte[reading.available()];            
                        nn.write(bytesFile);
                        nn.flush();                       
                    }while(reading.available()!=0);
                    nn.close();

Any suggestions?

[Heather]

The sockets can be slows, depends on your connection.
The best is that you send an integer indicating how many bytes are you going to send. In other side, reads the integer, and then the number of bytes that indicates.

Another choice is that the sender closes the connection, in this way the receiver reading until the connection close.

good luck