org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No

Question

All,

I am attempting to follow a simple Java/Corba tutorial.

However, when attempting to start the Server.java program I always run into the following error:

WARNING: "IOP00410201: (COMM_FAILURE) Connection failure: socketType: IIOP_CLEAR_TEXT; hostname: localhost; port: 900" org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 201 completed: No . . . Caused by: java.net.ConnectException: Connection refused: connect

I realize this has been posted before. However, I am completely new to CORBA and am at a loss as to how to correct the error.

Here is the snippet, in Server.java, that is throwing the error:

org.omg.CORBA.Object objRef = orb.resolve_initial_references("NameService");

I can start the ORBD by using this command: orbd -ORBInitialPort 1050 -ORBInitialHost localhost

I can also start tnameserver by using this command: start tnameserv -ORBInitialPort 1051

However, that is as far as I understand about how to correct.

Any help appreciated.

Thanks

orbd -ORBInitialPort 1050 -ORBInitialHost localhost -- starts without exception

start tnameserv -ORBInitialPort 1051 -- starts without exception

java Server ORBInitialPort 1050 -ORBInitialHost localhost -- throws connection refused exception...

Answer 1

I figured out the solution!

I had to specifically start all three objects, orbd, server and client indicating to only use IPV4:

orbd -J-verbose -J-Djava.net.preferIPv4Stack=true -J-Djava.net.preferIPv6Addresses=false -ORBInitialPort 1050 -ORBInitialHost localhost

java -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv6Addresses=false Server

java -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv6Addresses=false Client -ORBInitialPort 1050 -ORBInitialHost localhost