Ruslan Danilin [http://community.jboss.org/people/rdanilin] created the discussion "javax.naming.CommunicationException: Could not obtain connection to any of these urls: 127.0.0.1:7099" To view the discussion, visit: http://community.jboss.org/message/622765#622765 -------------------------------------------------------------- Hello, I'm trying to run standalone java application that subscribes to JMS topic on *JBoss AS 7.0.1* but get an error. The same app works fine on JBoss AS 6.1. I'm running JBoss with full profile  (./standalone.sh --server-config=standalone-preview.xml) Connection properties looks like this: INITIAL_CONTEXT_FACTORY=org.jnp.interfaces.NamingContextFactory URL_PKG_PREFIXES=org.jboss.naming:org.jnp.interfaces PROVIDER_URL=jnp://127.0.0.1:1099 When I'm starting my app I get this exception: Exception in thread "main" javax.naming.CommunicationException: *Could not obtain connection to any of these urls: 127.0.0.1:7099* and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]           at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1690)           at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1761)           at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:695)           at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:688)           at javax.naming.InitialContext.lookup(InitialContext.java:409)           at net.delmax.JMSClient.example(JMSClient.java:26)           at net.delmax.JMSClient.main(JMSClient.java:114) Caused by: java.net.SocketTimeoutException: Receive timed out           at java.net.PlainDatagramSocketImpl.receive0(Native Method)           at java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:135)           at java.net.DatagramSocket.receive(DatagramSocket.java:729)           at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1659)           ... 6 more [Root exception is javax.naming.CommunicationException: Failed to connect to server /127.0.0.1:7099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server /127.0.0.1:7099 [Root exception is java.net.ConnectException: Connection refused]]]           at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1780)           at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:695)           at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:688)           at javax.naming.InitialContext.lookup(InitialContext.java:409)           at net.delmax.JMSClient.example(JMSClient.java:26)           at net.delmax.JMSClient.main(JMSClient.java:114) Caused by: javax.naming.CommunicationException: Failed to connect to server /127.0.0.1:7099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server /127.0.0.1:7099 [Root exception is java.net.ConnectException: Connection refused]]           at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:337)           at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1746)           ... 5 more Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server /127.0.0.1:7099 [Root exception is java.net.ConnectException: Connection refused]           at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:307)           ... 6 more Caused by: java.net.ConnectException: Connection refused           at java.net.PlainSocketImpl.socketConnect(Native Method)           at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)           at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)           at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)           at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)           at java.net.Socket.connect(Socket.java:546)           at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:97)           at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:82)           at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:303)           ... 6 more why this happens and how can I fix it? -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/622765#622765] Start a new discussion in JNDI and Naming at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]