javaspaces policy file

[Tyler Verco]

hello,
I am using javaspaces for the first time, I wrote a simple client-server application where the server sends a task to the client and the client runs it.
my problem is with the policy file at the client, i do not want to give it all permissions

  grant {
    permission java.security.AllPermission;
};  

i want to make a strict policy for the code downloaded from the server and give all permissions to the original code running at the client.
i tried :

  grant codebase "file:${java.class.path}${/}-" {
    permission java.security.AllPermission;
};

grant [server codebase url] {
    [permissions for the downloaded code]
};   

i also tried

  grant codebase "file:${java.class.path}${/}-" {
    permission java.security.AllPermission;
};
grant codebase "file:${sun.boot.class.path}${/}-" {
    permission java.security.AllPermission;
};
grant [server codebase url] {
    [permissions for the downloaded code]
};   

it does not work, it denies access to SocketPermission when the client tries to connect to the space
java.security.AccessControlException: access denied (java.net.SocketPermission 192.168.0.2:4160 connect,resolve)

i searched a lot and tried a lot of things but all gives the same output, i don't know what i am doing wrong.

I will be very thankful if any one could help me.

thanks in advance,