how to specify the IP address and send amessage to Processing

Hi, guys!

I’m using Arduino Yun and I want to send message to Processing
through wifi using by osc library made by CNMAT.

#include <OSCMessage.h>

/*
Make an OSC message and send it over serial
 */

#ifdef BOARD_HAS_USB_SERIAL
#include <SLIPEncodedUSBSerial.h>
SLIPEncodedUSBSerial SLIPSerial( thisBoardsSerialUSB );
#else
#include <SLIPEncodedSerial.h>
 SLIPEncodedSerial SLIPSerial(Serial1);
#endif


void setup() {
  //begin SLIPSerial just like Serial
  SLIPSerial.begin(9600);   // set this as high as you can reliably run on your platform
#if ARDUINO >= 100
  while(!Serial)
    ; //Leonardo "feature"
#endif
}


void loop(){
  //the message wants an OSC address as first argument
  OSCMessage msg("/analog/0");
  msg.add((int32_t)analogRead(0));

  SLIPSerial.beginPacket();  
    msg.send(SLIPSerial); // send the bytes to the SLIP stream
  SLIPSerial.endPacket(); // mark the end of the OSC Packet
  msg.empty(); // free space occupied by message

  delay(20);
}

I want to send a message to Processing using by this sample as a guide , but I do not know how to specify the IP address .How do you send a message by specifying the IP address of the Processing side ?

help me!