Problems sending bufferedimages through a socket

Question

Hi everyone,
I've got a server program that takes a screen capture as a bufferedimage, and sends it through a socket to be saved by the client program. The programs work fine, however, whenever I'm transferring the image with the code at the bottom of this post, I notice that the collision LED on my network hub flashes and I can't figure out why (Obviously there's a collision, but I don't know what causes it or how to stop it from happening). I've googled a bit for collisions and bufferedimages, but have come up with El Zilcho. I've also gone through the IO tutorial and the Socket and BufferedImage API's, but havent learned anything to solve my problem.
Also, As it is now, if I want multiple images, I need to disconnect and reconnect repeatedly. I tried sending multiple bufferedimages throught the socket, but get the following exception:
java.lang.illegalargumentexception:  im == null!Does anyone know of a way where I can send multiple bufferedimages through the socket without reconnecting every single time? Thanks
Server code:
Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension screenSize = toolkit.getScreenSize();
Rectangle screenRect = new Rectangle(screenSize);
Robot robot = new Robot();
BufferedImage image = robot.createScreenCapture(screenRect));
ImageIO.write(image, "jpeg", fromClient.getOutputStream());
fromclient.shutdownOutput();
fromclient.close();Client code:
BufferedImage receivedImage = ImageIO.read(toServer.getInputStream)
toServer.close();Any help would be greatly appreciated. TIA
Jay

Answer 1

Have you tried.
ImageIO.write(image1, "jpeg", fromClient.getOutputStream());
ImageIO.write(image2, "jpeg", fromClient.getOutputStream());
ImageIO.write(image3, "jpeg", fromClient.getOutputStream());
ImageIO.write(image4, "jpeg", fromClient.getOutputStream());
ImageIO.write(image5, "jpeg", fromClient.getOutputStream());
ImageIO.write(image6, "jpeg", fromClient.getOutputStream());
ImageIO.write(image7, "jpeg", fromClient.getOutputStream());