Problem using sockets locally
Hey,
I'm writing a simple client/server app and I'm trying to test it on my local machine. Every time I try to connect to the server I get a ConnectException. I'm running Ubuntu Intrepid (which I suspect may have something to do with my problem).
This is how I'm setting up the server (just to add, this is threaded):
this.socket = new ServerSocket(TCP_SERVER_PORT);
socket.accept(); //blah, blah, blahAnd this is how I'm trying to connect:
this.socket = new Socket("127.0.0.1",TCP_SERVER_PORT);I have no idea why this fails! Any ideas?
Cheers,
Puff
ejp wrote:
I get a ConnectExceptionwith what message?I get:
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.<init>(Socket.java:366)
at java.net.Socket.<init>(Socket.java:180)
at client.TCPClient.<init>(TCPClient.java:30)
at client.TCPClient.main(TCPClient.java:74)
socket.accept(); //blah, blah, blahYou mean Socket client = socket.accept();That is what I mean, sorry (lazyness! :)).
And this is how I'm trying to connect:
this.socket = new Socket("127.0.0.1",TCP_SERVER_PORT);
That should certainly work on the host the server is running on. Could be your /etc/hosts file. It should map 'localhost' to 127.0.0.1, and your real hostname to your real IP address. This is a common, and rather shocking, problem with some Linux distributions.
127.0.0.1 localhost
127.0.1.1 peter-laptop
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
Also can you post the output of netstat -na after you have started the server.
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 1 1 192.168.1.70:57052 72.5.124.102:80 LAST_ACK
tcp 1 0 192.168.1.70:38987 66.102.9.100:80 CLOSE_WAIT
tcp 1 1 192.168.1.70:57047 72.5.124.102:80 LAST_ACK
tcp 1 1 192.168.1.70:57049 72.5.124.102:80 LAST_ACK
tcp 1 1 192.168.1.70:57051 72.5.124.102:80 LAST_ACK
tcp 1 1 192.168.1.70:57050 72.5.124.102:80 LAST_ACK
tcp 1 1 192.168.1.70:57048 72.5.124.102:80 LAST_ACK
tcp6 0 0 :::22 :::* LISTEN
udp 0 0 0.0.0.0:41091 0.0.0.0:*
udp 0 0 0.0.0.0:68 0.0.0.0:*
udp 0 0 0.0.0.0:5353 0.0.0.0:* I've cut out the bit after "Active UNIX domain sockets" because the message was too long, but I have it if it would help.
Does this shed any light on the problem?
Cheers,
Pete
Edited by: Puffy on Jan 9, 2009 10:48 AM
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Feb 10, 2012 11:30:24 AM oracle.security.jps.internal.keystore.file.FileKeyStoreManager saveKeyStore
WARNING: Failed to save farm keystore. Reason {0}
Feb 10, 2012 11:30:24 AM oracle.security.jps.internal.keystore.file.FileKeyStoreManager createKeyStore
WARNING: Failed to save farm keystore. Reason {0}
oracle.security.jps.service.keystore.KeyStoreServiceException: JPS-06513: Failed to save farm keystore. Reason
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreManager.createKeyStore(FileKeyStoreManager.java:309)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.doInit(FileKeyStoreServiceImpl.java:95)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.<init>(FileKeyStoreServiceImpl.java:73)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.<init>(FileKeyStoreServiceImpl.java:63)+
+ at oracle.security.jps.internal.keystore.KeyStoreProvider.getInstance(KeyStoreProvider.java:157)+
+ at oracle.security.jps.internal.keystore.KeyStoreProvider.getInstance(KeyStoreProvider.java:64)+
+ at oracle.security.jps.internal.core.runtime.ContextFactoryImpl.findServiceInstance(ContextFactoryImpl.java:139)+
+ at oracle.security.jps.internal.core.runtime.ContextFactoryImpl.getContext(ContextFactoryImpl.java:170)+
+ at oracle.security.jps.internal.core.runtime.ContextFactoryImpl.getContext(ContextFactoryImpl.java:191)+
+ at oracle.security.jps.internal.core.runtime.JpsContextFactoryImpl.getContext(JpsContextFactoryImpl.java:132)+
+ at oracle.security.jps.internal.core.runtime.JpsContextFactoryImpl.getContext(JpsContextFactoryImpl.java:127)+
+ at oracle.security.jps.internal.policystore.PolicyUtil$1.run(PolicyUtil.java:850)+
+ at oracle.security.jps.internal.policystore.PolicyUtil$1.run(PolicyUtil.java:844)+
+ at java.security.AccessController.doPrivileged(Native Method)+
+ at oracle.security.jps.internal.policystore.PolicyUtil.getDefaultPolicyStore(PolicyUtil.java:844)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:291)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:284)+
+ at oracle.security.jps.internal.policystore.JavaPolicyProvider.<init>(JavaPolicyProvider.java:270)+
+ at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)+
+ at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)+
+ at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)+
+ at java.lang.reflect.Constructor.newInstance(Constructor.java:513)+
+ at java.lang.Class.newInstance0(Class.java:355)+
+ at java.lang.Class.newInstance(Class.java:308)+
+ at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.loadOPSSPolicy(CommonSecurityServiceManagerDelegateImpl.java:1343)+
+ at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1022)+
+ at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:873)+
+ at weblogic.security.SecurityService.start(SecurityService.java:148)+
+ at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)+
+ at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)+
+ at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)+
+<Feb 10, 2012 11:30:24 AM CET> <Error> <Security> <BEA-090892> <The loading of OPSS java security policy provider failed due to exception, see the exception stack trace or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: oracle.security.jps.JpsException: [PolicyUtil] Exception while getting default policy Provider>+
+<Feb 10, 2012 11:30:24 AM CET> <Critical> <WebLogicServer> <BEA-000386> <Server subsystem failed. Reason: weblogic.security.SecurityInitializationException: The loading of OPSS java security policy provider failed due to exception, see the exception stack trace or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: oracle.security.jps.JpsException: [PolicyUtil] Exception while getting default policy Provider+
+weblogic.security.SecurityInitializationException: The loading of OPSS java security policy provider failed due to exception, see the exception stack trace or the server log file for root cause. If still see no obvious cause, enable the debug flag -Djava.security.debug=jpspolicy to get more information. Error message: oracle.security.jps.JpsException: [PolicyUtil] Exception while getting default policy Provider+
+ at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.loadOPSSPolicy(CommonSecurityServiceManagerDelegateImpl.java:1402)+
+ at weblogic.security.service.CommonSecurityServiceManagerDelegateImpl.initialize(CommonSecurityServiceManagerDelegateImpl.java:1022)+
+ at weblogic.security.service.SecurityServiceManager.initialize(SecurityServiceManager.java:873)+
+ at weblogic.security.SecurityService.start(SecurityService.java:148)+
+ at weblogic.t3.srvr.SubsystemRequest.run(SubsystemRequest.java:64)+
+ Truncated. see log file for complete stacktrace+
+Caused By: oracle.security.jps.JpsRuntimeException: oracle.security.jps.JpsException: [PolicyUtil] Exception while getting default policy Provider+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:293)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:284)+
+ at oracle.security.jps.internal.policystore.JavaPolicyProvider.<init>(JavaPolicyProvider.java:270)+
+ at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)+
+ at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)+
+ Truncated. see log file for complete stacktrace+
+Caused By: oracle.security.jps.JpsException: [PolicyUtil] Exception while getting default policy Provider+
+ at oracle.security.jps.internal.policystore.PolicyUtil.getDefaultPolicyStore(PolicyUtil.java:899)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:291)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:284)+
+ at oracle.security.jps.internal.policystore.JavaPolicyProvider.<init>(JavaPolicyProvider.java:270)+
+ at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)+
+ Truncated. see log file for complete stacktrace+
+Caused By: java.security.PrivilegedActionException: oracle.security.jps.JpsException: [PolicyUtil] Unable to obtain default JPS Context!+
+ at java.security.AccessController.doPrivileged(Native Method)+
+ at oracle.security.jps.internal.policystore.PolicyUtil.getDefaultPolicyStore(PolicyUtil.java:844)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:291)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:284)+
+ at oracle.security.jps.internal.policystore.JavaPolicyProvider.<init>(JavaPolicyProvider.java:270)+
+ Truncated. see log file for complete stacktrace+
+Caused By: oracle.security.jps.JpsException: [PolicyUtil] Unable to obtain default JPS Context!+
+ at oracle.security.jps.internal.policystore.PolicyUtil$1.run(PolicyUtil.java:860)+
+ at oracle.security.jps.internal.policystore.PolicyUtil$1.run(PolicyUtil.java:844)+
+ at java.security.AccessController.doPrivileged(Native Method)+
+ at oracle.security.jps.internal.policystore.PolicyUtil.getDefaultPolicyStore(PolicyUtil.java:844)+
+ at oracle.security.jps.internal.policystore.PolicyDelegationController.<init>(PolicyDelegationController.java:291)+
+ Truncated. see log file for complete stacktrace+
Caused By: oracle.security.jps.service.keystore.KeyStoreServiceException: JPS-06513: Failed to save farm keystore. Reason
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreManager.createKeyStore(FileKeyStoreManager.java:309)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.doInit(FileKeyStoreServiceImpl.java:95)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.<init>(FileKeyStoreServiceImpl.java:73)+
+ at oracle.security.jps.internal.keystore.file.FileKeyStoreServiceImpl.<init>(FileKeyStoreServiceImpl.java:63)+
+ at oracle.security.jps.internal.keystore.KeyStoreProvider.getInstance(KeyStoreProvider.java:157)+
+ Truncated. see log file for complete stacktrace+
+>+
+<Feb 10, 2012 11:30:24 AM CET> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FAILED.>+
+<Feb 10, 2012 11:30:24 AM CET> <Error> <WebLogicServer> <BEA-000383> <A critical service failed. The server will shut itself down.>+
+<Feb 10, 2012 11:30:24 AM CET> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to FORCE_SHUTTING_DOWN.>+
Process exited.
*/LOG*
After that, I tried setting permissions for the cwallet.sso file to ugo+rwx, but this leads to the same problems as mentioned above.
My second try was to setup an external WLS 12c, but it seems to be not yet possible to connect to a WLS 12c from within jDeveloper.
Do you have any ideas ?
Thank you in advance for your help.
Regards,
RobinAfter debugging the WLS Initialisation with jdb, I recognized that there was some trouble with dependent libraries.
In the end, I solved my problem by using another OS (Ubuntu 11.10) for development. There, the WLS works out of the box, even with 64-Bit libraries.
Thank you for your help.
Regards,
Robin -
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