Cannot run the JNI application in debug mode in eclipse

Question

Hi ,
I have created a C++/Java project in Eclipse on windows XP.
I can run the app. but I cannot debug it. I get the following error.
Failed to connect to remote VM. Connection refused.
java.net.ConnectException: Connection refused: connect
java.net.PlainSocketImpl.socketConnect(Native Method)
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
java.net.Socket.connect(Socket.java:452)
java.net.Socket.connect(Socket.java:402)
java.net.Socket.<init>(Socket.java:309)
java.net.Socket.<init>(Socket.java:124)
org.eclipse.jdi.internal.connect.SocketTransportImpl.attach(SocketTransportImpl.java:47)
org.eclipse.jdi.internal.connect.SocketAttachingConnectorImpl.attach(SocketAttachingConnectorImpl.java:103)
org.eclipse.jdt.internal.launching.SocketAttachConnector.connect(SocketAttachConnector.java:131)
org.eclipse.jdt.internal.launching.JavaRemoteApplicationLaunchConfigurationDelegate.launch(JavaRemoteApplicationLaunchConfigurationDelegate.java:75)
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:569)
org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:788)
org.eclipse.debug.internal.ui.DebugUIPlugin$6.run(DebugUIPlugin.java:955)
org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)
I compiled my C program with :
     options[0].optionString = "-Xdebug";
     options[1].optionString = "-Xnoagent";
     options[2].optionString = "-Djava.compiler=NONE";
     options[3].optionString = "-Djava.class.path=.";
     options[4].optionString = "-Xrunjdwp:transport=dt_socket,address=8888,server=y,suspend=y";
In the debug window in eclipse i have created a new config. under remote java application. I have set the connect tab = myproject.
Connection type = Standard(socket attach) and connection properties: host = localhost , port=8888.
Any help?

Answer 1

It looks like you are doing basically the same thing as we are doing, and it seems to work for us. Do you see a message from the JVM that says:
Listening for transport dt_socket at address: 8888
The one strange thing that we are seeing is if we throw an exception in Java and clear it in C++ (using ExceptionClear) the subsequent entry into the eclipse debug session behaves very strange.
Anyway, here is what we are doing:
J2SE 5.0
Eclipse Version: 3.1.0 Build id: I20050401-1645
jvmOptions[0].optionString = "-Djava.compiler=NONE";
jvmOptions[1].optionString = (char *)classPath.c_str();
jvmOptions[2].optionString = "-Xdebug";
jvmOptions[3].optionString = "-Xnoagent";
jvmOptions[4].optionString = "-Xrunjdwp:transport=dt_socket,address=8888,server=y,suspend=n";
jvmOptions[5].optionString = "-verbose:jni";
memset(&vm_args, 0, sizeof(vm_args));
vm_args.version = JNI_VERSION_1_4;
vm_args.nOptions = JNI_ARG_SIZE;
vm_args.options = jvmOptions;
vm_args.ignoreUnrecognized = JNI_TRUE;
The eclipse remote java application is the same as your:
Connection type = Standard(socket attach)
Connection properties: host = localhost , port=8888.