Sending Datagram Crashes Without Exception

I have developed a simple UDP connection protocol in C++ that I am currently using fine on windows machines. I want to proceed to develop a java client class for use in android applications.

Everything seems to be simple enough (except for eclipse constantly bugging out) but I appear to have hit a brick wall. Here is the code that I run when a button is pressed (all I want at this stage is to get a packet through):

Code:
DatagramPacket sendPacket = new DatagramPacket("HELLO!".getBytes(), 6, servAddr, server_port);
Log.d("UdpTest", "blah");
try {
Log.d("UdpTest", "blah2");
servSock.send(sendPacket);

[Code] ....

I am trying to catch the exception, so I am not sure how it is uncaught. This is practically my first attempt at Java so I could be mistaken in that the uncaught exception is not my problem and is just mentioned because of however Android is deciding to fail on the send() method.

The only permission my app should require is android.permission.INTERNET is it not? Oddly, if I remove the permission the app crashes in exactly the same way which would suggest to me that it needs some other permission, the permissions are not applying correctly or that the problem has nothing to do with permissions (it is failing before it gets far enough to care).

So far, I think it could be a strange ICS problem, but that wouldn't make sense because I haven't seen any other app that is likely to use UDP simply stop responding on my phone (edit: I have actually, see my next post). The other alternative is that my Java is just horribly wrong (i hope so).

Here is my code:

Code:
public class UdpTestActivity extends Activity {
String text;
int server_port = 25505;
byte[] message = new byte[3000];
DatagramSocket servSock;

[Code] ....