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Message:

I cannot connect to the loopkup service!

Posted by Daniele on October 10, 2001 at 10:00 AM

Hi,
I have a problem connecting to the lookup service both with unicast discovery (TCP) and multicast discovery (UDP). In both cases the program (client or service provider) interrupts throwing an exception.
I work with a Notebook which has Windows2000 sp2 installed on it. I am not connected to a net and so, I have installed the Microsoft's "Network Adapter Loopback" to make the lookup service work.
I use jdk1.3.1_01 and jini1.1.

For making the lookup service run, I launch form the prompt the following commands:

1) start HTTP server
java -jar d:\jini1.1\lib\tools.jar -dir d:\ls\http -trees
-verbose
(all in one line)

The reggie-dl.jar file is stored in the d:\ls\http directory.

2) start RMI daemon
rmid -J-Dsun.rmi.activation.execPolicy=none -dir d:\ls\rmid_log

3) start Reggie
java -jar d:\jini1.1\lib\reggie.jar http://127.0.0.1:8080/reggie-dl.jar d:\ls\policy.all d:\ls\reggie_log public
(all in one line)

The d:\ls\policy.all file is the following:

grant {
permission java.security.AllPermission "", "";
};

Once the lookup service has started, I try to connect to it but I cannot. If I try a unicast discovery (TCP)with a program through the instruction

LookupLocator lookup = new LookupLocator("jini://127.0.0.1");

this stops throwing the following exception
java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:4160 connect,resolve)

If I try a multicast discovery (UDP) through the instruction

LookupDiscovery discover = new LookupDiscovery(LookupDiscovery.ALL_GROUPS);

I get the following error message instead
java.security.AccessControlException: access denied (net.jini.discovery.DiscoveryPermission *)

What is my problem? How can I solve it?

Thanks in advance.