example file send

File myFile = new File(thisIsRootDirString);
while(!done){
   if(myFile.isDirectory()){
      listFiles = myFile.list();
     //I guess take the name of the directory, add it to another string and iterate through the list of files
     //and at the end send the directory to reconstruct the directory structure on the client side
   }else{
       //send the file?
   }
}