Mobile-Desktop socket connection

Question

I have a client program running on a mobile and a server program running on my desktop, I am trying to establish a socket connection between them and send "hello" message from the mobile to the desktop, here are the codes
Client:
try{
SocketConnection sc = (SocketConnection)
Connector.open("socket://xxx.xxx.xxx.xxx:4444");
myDisplay.setCurrent(form);
OutputStream os = null;
try{
os = sc.openOutputStream();
byte[] data = "Hello/".getBytes();
os.write(data);
os.flush();
} finally{
sc.close();
os.close();
} catch (IOException x){
x.printStackTrace();
}Server:
public void Server()
ServerSocket serverSocket=null;
Socket clientSocket = null;
try {
serverSocket = new ServerSocket(4444);
clientSocket = serverSocket.accept();
} catch (IOException e) {
System.out.println("Could not listen on port: 4444");
System.exit(-1);
System.out.println("Connection Established");
try
char[] input=new char[1000];
int i=0;
char delimiter='/';
InputStream in=clientSocket.getInputStream();
while ((input=(char)in.read()) != delimiter){
System.out.println(input[i]);
i++;
in.close();
clientSocket.close();
serverSocket.close();
}catch(IOException e)
e.printStackTrace();
}I run the server then I run the client, "Connection Established" message appeares indicating that the desktop successfully accepted the connection request from the mobile, however, the "Hello" message doesn't appear afterwards, nothing appeares after the "Connection Established" message actually, So what has gone wrong?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

You will find that using Sockets with MIDP is going to be hard work for you. (different phones different behavior, and many network providers do all sorts of funny firewalling).
Are you able to use HTTP instead? E.g. XML over http.