// Learning Processing
  // Daniel Shiffman
  // http://www.learningprocessing.com
  
  // Example 19-7: Client for multi-user whiteboard
  
  // Import the net libraries
  import processing.net.*;
  // Declare a client
  Client client;
  
  void setup() {
    size(200,200);
    // Create the Client
    client = new Client(this, "127.0.0.1" , 5204);
    background(255);
    smooth();
  }
  
  void draw() {
  
    // If there is information available to read from the Server
    if (client.available() > 0) {
      // Read message as a String, all messages end with an asterisk
      String in = client.readStringUntil('*');
  
      // Print message received
      println( "Receiving:" + in);
  
      // The client reads messages from the Server and parses them with splitTokens() according to our protocol.    
      int[] vals = int(splitTokens(in, ",*" )); 
  
      // Render an ellipse based on those values
      fill(0,100);
      noStroke();
      ellipse(vals[0],vals[1],16,16);
    }
  }
  
  // Send data whenever the user drags the mouse
  void mouseDragged() {
    // Put the String together with our protocol: mouseX comma mouseY asterisk
    String out = mouseX + "," + mouseY + "*" ;
    // A message is sent whenever the mouse is dragged. Note that a client will receive its own messages! Nothing is drawn here!  
    client.write(out); 
    // Print a message indicating we have sent data
    println( "Sending:" + out);
  }