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POReceiving byte array over a socket
 

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    <p>i have a program which accepts connection from a phone that sends a byte array, i am able to test the connection when it is made , however how do i know that i am actually receiving something? how can i "see" if any thing is being sent over the socket. Because from my code below i am not able to have the resulting file "saved.jpg" created. Does this mean that it did not receive anything?</p> <pre><code>public class wpsServer { //vars private int svrPort = 3334; private ServerSocket serverSocket; private Image image = null; public wpsServer() { try { serverSocket = new ServerSocket(svrPort); System.out.println("Server started on "+svrPort); } catch (IOException e) { System.out.println("Could not listen on port: "+svrPort); System.exit(-1); } } public void listenForClient() { Socket clientSocket = null; try { clientSocket = serverSocket.accept(); if(clientSocket.isConnected()) System.out.println("Connected"); byte[] pic = getPicture(clientSocket.getInputStream()); InputStream in = new ByteArrayInputStream(pic); BufferedImage image = ImageIO.read(in); File outputfile = new File("saved.jpg"); ImageIO.write(image, "jpg", outputfile); } catch (IOException e) { System.out.println("Accept failed: "+svrPort); System.exit(-1); } } public byte[] getPicture(InputStream in) { try { ByteArrayOutputStream out = new ByteArrayOutputStream(); byte[] data = new byte[1024]; int length = 0; while ((length = in.read(data))!=-1) { out.write(data,0,length); } return out.toByteArray(); } catch(IOException ioe) { //handle it } return null; } } </code></pre>
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