Error communicating ros android client with a c++ service [closed]

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Hello everyone,

I'm trying to communicate a ros android client with a c++ service running on PC. But when the service client is being created there are some issues.

02-25 10:49:33.618: E/AndroidRuntime(331): FATAL EXCEPTION: pool-1-thread-4
02-25 10:49:33.618: E/AndroidRuntime(331): org.ros.exception.RosRuntimeException: Connection exception: rocha-Inspiron-5423/92.242.140.20:58975
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.transport.tcp.TcpClient.connect(TcpClient.java:109)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.transport.tcp.TcpClientManager.connect(TcpClientManager.java:69)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.service.DefaultServiceClient.connect(DefaultServiceClient.java:135)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.service.ServiceFactory.newClient(ServiceFactory.java:144)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.DefaultNode.newServiceClient(DefaultNode.java:365)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.DefaultNode.newServiceClient(DefaultNode.java:372)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.android.android_tutorial_pubsub.EnviaDadosClient.onStart(EnviaDadosClient.java:30)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.DefaultNode$5.run(DefaultNode.java:506)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.internal.node.DefaultNode$5.run(DefaultNode.java:503)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.concurrent.EventDispatcher.loop(EventDispatcher.java:43)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.ros.concurrent.CancellableLoop.run(CancellableLoop.java:56)
02-25 10:49:33.618: E/AndroidRuntime(331):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
02-25 10:49:33.618: E/AndroidRuntime(331):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
02-25 10:49:33.618: E/AndroidRuntime(331):  at java.lang.Thread.run(Thread.java:1019)
02-25 10:49:33.618: E/AndroidRuntime(331): Caused by: java.net.ConnectException: connection timed out
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processConnectTimeout(NioClientSocketPipelineSink.java:391)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:289)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
02-25 10:49:33.618: E/AndroidRuntime(331):  at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
02-25 10:49:33.618: E/AndroidRuntime(331):  ... 3 more
02-25 10:49:33.628: E/nnectionTrackingHandler(331): Channel exception: java.net.ConnectException: connection timed out

I already tryied to delete the /etc/hostname archive, but when i did this even the registration with /rosout failed.

Someone has any idea how to solve this problem?