21-Jun-2011 18:29:01 org.apache.xmlrpc.server.XmlRpcErrorLogger log
SEVERE: Failed to invoke method registerSubscriber in class org.ros.internal.node.xmlrpc.MasterImpl: null
org.apache.xmlrpc.common.XmlRpcInvocationException: Failed to invoke method registerSubscriber in class org.ros.internal.node.xmlrpc.MasterImpl: null
at org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.invoke(ReflectiveXmlRpcHandler.java:129)
at org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.execute(ReflectiveXmlRpcHandler.java:106)
at org.apache.xmlrpc.server.XmlRpcServerWorker.execute(XmlRpcServerWorker.java:46)
at org.apache.xmlrpc.server.XmlRpcServer.execute(XmlRpcServer.java:86)
at org.apache.xmlrpc.server.XmlRpcStreamServer.execute(XmlRpcStreamServer.java:200)
at org.apache.xmlrpc.webserver.Connection.run(Connection.java:208)
at org.apache.xmlrpc.util.ThreadPool$Poolable$1.run(ThreadPool.java:68)
Caused by: java.lang.IllegalStateException
at com.google.common.base.Preconditions.checkState(Preconditions.java:129)
at org.ros.internal.node.server.MasterServer.addSlave(MasterServer.java:80)
at org.ros.internal.node.server.MasterServer.registerSubscriber(MasterServer.java:110)
at org.ros.internal.node.xmlrpc.MasterImpl.registerSubscriber(MasterImpl.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.xmlrpc.server.ReflectiveXmlRpcHandler.invoke(ReflectiveXmlRpcHandler.java:115)
node = new Node("Camera1", configuration);
publisher = node.createPublisher("Camera1",
org.ros.message.sensor_msgs.Image.class);
....................
node = new Node("Camera1", configuration);
System.out.println("ScreenView.main() Starting");
// final Log log = node.getLog();
node.createSubscriber("Camera1", new MessageListener<org.ros.message.sensor_msgs.Image>() {
public void onNewMessage(org.ros.message.sensor_msgs.Image message) {
System.out
.println("Subscriber \"" + message + "\"");
}
}, org.ros.message.sensor_msgs.Image.class);
Reason behind this exception is Nodes with same name.
If I change this name and create different nodes in publisher and subscribers code then its fine.
Anyone has any idea why is that or we are not supposed to create node with same name?