Hi,  I'm having some trouble with this code I've written to send OSC messages to Supercollider and across a switch to two other machines.

1.  I can't seem to bind addresses or values to OSC messages at all.  You will notice in the routeData method i have place printlns to give me info on the contents of the message.  Those statements which return information from the message come back null and the statement which is supposed to return the value of the first argument in the message throws a nullPointer Exception.

2.  Im establishing connections across machines using OSCP5 TCP, however as soon as i connect from a client terminal which calls the routeData method i get an ArrayIndexOutOfBounds Exception at the server terminal.

Hope someone out there can help!
Thanks.

Code:

// Luke George
// 3rd Year Music Informatics Bsc
// January - March 2007

//Import necessary packages
import oscP5.*;
import netP5.*;

public class DataRouter extends Thread{

 //Create OSC supercollider client
 OscP5 scClient;

 //Create tcp server
 OscP5 server;

 //Create client A
 OscP5 clientA;

 //Create client B
 OscP5 clientB;

 //Create float arrays for data from remote locations
 float[] remoteData1, remoteData2;

 //Reference Strings for client addresses
 String clientAAddr, clientBAddr;

 //NetAddress object defining loopback for supercollider
 NetAddress loopBack;

 //Create bundle used to package data for remote locations
 OscBundle msgBundle;

 //Constructor
 public DataRouter(){

   //Call to superclass constructor
   super("DataRouter");

   // Local OSC traffic to SC goes via UDP
   scClient = new OscP5(this, 6969);

   //loopback address for Supercollider
   loopBack = new NetAddress("127.0.0.1", 57120);

   //Network OSC traffic travels by TCP
   server  = new OscP5(this, 5000, OscP5.TCP);

   //Initialise msgBundle
   msgBundle = new OscBundle();

   //Initialise data array and fill with 0s
   remoteData1 =  new float[3];    
   for(int i = 0; i < remoteData1.length; i = i + 1){
     remoteData1[i] = 0;
   }

   //Initialise data array and fill with 0s
   remoteData2 =  new float[3];
   for(int i = 0; i < remoteData1.length; i = i + 1){
     remoteData2[i] = 0;
   }

   //Start the Thread
   this.start();  

 }

 //boot sets up the client connections to the other machines.
 //This method is user triggered since servers must be running
 //on remote machines for connections to be established
 void boot(String clientAAddr, String clientBAddr){

   this.clientAAddr = clientAAddr;
   this.clientBAddr = clientBAddr;

   println();
   println("Booting...");

   //Attempt to create client connection A
   println();
   println("Contacting clientA: "+clientAAddr);
   clientA = new OscP5(this, clientAAddr, 5000, OscP5.TCP);
   delay(1000);

   //Attempt to create client connection B
   println();
   println("Contacting clientB: "+clientBAddr);
   clientB = new OscP5(this, clientBAddr, 5000, OscP5.TCP);
   delay(1000);
 }

 //Method used to route data locally (supercollider) and also to
 //remote locations.  Data arriving is immediately despatched via
 //OSC to supercollider locally.  Every third call, i.e. when
 //values for all 3 sensors are present a bundle is sent via OSC to
 //remote locations
 void routeData(float[] data){

   for(int i = 0; i < data.length; i = i + 1){
     String addr = "/sens"+i;
     println("Address: "+addr);
     float value = (0.5*data[i]) + (0.25*remoteData1[i]) + (0.25*remoteData2[i]);
     println("Value: "+value);
       OscMessage message = (addr);
     message.add(value);
     println("Address: "+message.address());
     println("Value: "+message.get(1).floatValue());  <<<< BOMBS OUT HERE
     scClient.send(message, loopBack);
     msgBundle.add(message);
   }

   clientA.send(msgBundle);
   clientB.send(msgBundle);
   msgBundle.clear();

 }

 //OSC event listener
 void oscEvent(OscBundle msgBundle){
   System.out.println("Received OSC Bundle");
 }

 void shutDown(){
   scClient.stop();
   delay(100);
   server.stop();
   delay(100);
   clientA.stop();
   delay(100);
   clientB.stop();
   delay(100);
   println("Services stopped");
 }
}

Code:

println("Value: "+message.get(1).floatValue());  <<<< BOMBS OUT HERE 
 

just replace the 1 in .get(1) with a 0
to get the first item you would need to go to position 0 in the array from which you are requesting the value.
the error is funny though.

best,
andi

actually the message and the array with the arguments is finally assembled when you send the message. so before that osc arguments are just pushed into a byte array. my only advice can be
Code:

println("Value: "+value); // <<<< NO BOMBING HERE 
 

and trust the lib

best,
andi

most of this is a fair distance beyond my comprehension as a Processing/Java programmer, but i may have some information that can help you..

if you are building your project in Processing, nullPointerExceptions are a little janky. i got one when i tried to read a BufferedInputStream into an awt.Image object. the problem was nonexistant after i compiled my code into a native java program rather than one compiled from within the PDE.

if you are already compiling and writing your program from within java, then this post probably does nothing to help you.. and i apologize.

i just know that i had a nullPointerException error occurring where it made no sense to do so.. and migrating the project to native Java (importing processing.core.* and adding my Processing code as an extending class) fixed it.

hope this helps. if not, sorry.

i will try to track down the code example that was given to me that produced the error.

the error no longer existed when i migrated to eclipse.