Example of using OSC multicast with Processing / oscP5

oscP5_multicast.pde

/**
 * oscP5multicast by andreas schlegel
 * example shows how to send osc via a multicast socket.
 * what is a multicast? http://en.wikipedia.org/wiki/Multicast
 * ip multicast ranges and uses:
 * 224.0.0.0 - 224.0.0.255 Reserved for special Òwell-knownÓ multicast addresses.
 * 224.0.1.0 - 238.255.255.255 Globally-scoped (Internet-wide) multicast addresses.
 * 239.0.0.0 - 239.255.255.255 Administratively-scoped (local) multicast addresses.
 * oscP5 website at http://www.sojamo.de/oscP5
 *
 * updated by mangtronix
 * - explicitly set IPv4
 * - send mouse X and Y
 */

import oscP5.*;
import netP5.*;

OscP5 oscP5;

void setup() {
  size(400,400);
  frameRate(25);
  /* create a new instance of oscP5 using a multicast socket. */
  System.setProperty("java.net.preferIPv4Stack", "true");
  oscP5 = new OscP5(this, "239.0.0.1", 8888, OscP5.UDP | OscP5.MULTICAST);
  
}


void draw() {
  background(0);
}


void mousePressed() {
  /* create a new OscMessage with an address pattern, in this case /test. */
  OscMessage myOscMessage = new OscMessage("/test");
  
  /* add a value (an integer) to the OscMessage */
  myOscMessage.add(100);
  
  /* send the OscMessage to the multicast group. 
   * the multicast group netAddress is the default netAddress, therefore
   * you dont need to specify a NetAddress to send the osc message.
   */
  oscP5.send(myOscMessage);
}


/* incoming osc message are forwarded to the oscEvent method. */
void oscEvent(OscMessage theOscMessage) {
  /* print the address pattern and the typetag of the received OscMessage */
  print("### received an osc message.");
  print(" addrpattern: "+theOscMessage.addrPattern());
  println(" typetag: "+theOscMessage.typetag());
  theOscMessage.print();
}