Connection Refused to 127.0.0.1 on Windows

[Mike Cantrell]

Hello,

I'm attempting to configure the RMI Multicast distributed cache and
everything works fine as long as the JVMs are on the same physical
server. When I deploy my app with identical configurations to seperate
machines, I get the following error for every cache that tries
bootstrapping:

2009-07-16 13:39:55,605 DEBUG
distribution.MulticastKeepaliveHeartbeatReceiver We are already
processing these rmiUrls. Another heartbeat came before we finished:
//172.16.1.140:40001/dailyCache|//172.16.1.140:40001/microCache|//172.16.1.140:40001/hourlyCache|//172.16.1.140:40001/weeklyCache|//172.16.1.140:40001/monthlyCache|//172.16.1.140:40001/eternalCache
2009-07-16 13:39:55,621 DEBUG distribution.RMIBootstrapCacheLoader
cache peers: [RMICachePeer_Stub[UnicastRef2 [liveRef:
[endpoint:[127.0.0.1:3336,net.sf.ehcache.distribution.ConfigurableRMIClientSocketFactory@1d4c0](remote),objID:[-dc96a19:12284d6c285:-7fec,
7155764359885223201]]]]]
2009-07-16 13:39:55,621 DEBUG distribution.RMIBootstrapCacheLoader
Bootstrapping weeklyCache from RMICachePeer_Stub[UnicastRef2 [liveRef:
[endpoint:[127.0.0.1:3336,net.sf.ehcache.distribution.ConfigurableRMIClientSocketFactory@1d4c0](remote),objID:[-dc96a19:12284d6c285:-7fec,
7155764359885223201]]]]
2009-07-16 13:39:56,558 WARN  distribution.RMIBootstrapCacheLoader
Error asynchronously performing bootstrap. The cause was: Error
bootstrapping from remote peer. Message was: Connection refused to
host: 127.0.0.1; nested exception is:
       java.net.ConnectException: Connection refused: connect
net.sf.ehcache.distribution.RemoteCacheException: Error bootstrapping
from remote peer. Message was: Connection refused to host: 127.0.0.1;
nested exception is:
       java.net.ConnectException: Connection refused: connect
       at net.sf.ehcache.distribution.RMIBootstrapCacheLoader.doLoad(RMIBootstrapCacheLoader.java:175)
       at net.sf.ehcache.distribution.RMIBootstrapCacheLoader$BootstrapThread.run(RMIBootstrapCacheLoader.java:106)
Caused by: java.rmi.ConnectException: Connection refused to host:
127.0.0.1; nested exception is:
       java.net.ConnectException: Connection refused: connect
       at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
       at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
       at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
       at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:110)
       at net.sf.ehcache.distribution.RMICachePeer_Stub.getKeys(Unknown Source)
       at net.sf.ehcache.distribution.RMIBootstrapCacheLoader.doLoad(RMIBootstrapCacheLoader.java:145)
       ... 1 more
Caused by: java.net.ConnectException: Connection refused: connect
       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 sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
       at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
       at net.sf.ehcache.distribution.ConfigurableRMIClientSocketFactory.createSocket(ConfigurableRMIClientSocketFactory.java:72)
       at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
       ... 6 more

My configuration is pretty standard:

   <cacheManagerPeerProviderFactory
           class="net.sf.ehcache.distribution.RMICacheManagerPeerProviderFactory"
           properties="hostName=, peerDiscovery=automatic,
multicastGroupAddress=230.0.0.1,multicastGroupPort=4447,
timeToLive=32"/>

   <cacheManagerPeerListenerFactory
class="net.sf.ehcache.distribution.RMICacheManagerPeerListenerFactory"
                                    properties="hostName=, port=40001"/>

   <cache name="weeklyCache"
          maxElementsInMemory="10000"
          eternal="false"
          timeToLiveSeconds="604800"
          overflowToDisk="true"
          diskPersistent="true"
          diskExpiryThreadIntervalSeconds="120"
          memoryStoreEvictionPolicy="LRU">
       <cacheEventListenerFactory
class="net.sf.ehcache.distribution.RMICacheReplicatorFactory"/>
       <bootstrapCacheLoaderFactory
class="net.sf.ehcache.distribution.RMIBootstrapCacheLoaderFactory"/>
   </cache>

I've tried both 1.5.0 and 1.6.0 and both behave the same. I've seen
the entry on the FAQ regarding linux returning the loopback adapter
for InetAddress.getLocalHost() but I've verified that it's returning
the correct, public address. The servers are running on windows 2003
server on vmware and there is only 1 network adapter configured on
each server.

I'm a bit stumped... any help or ideas would be greatly appreciated!

Summary:

windows 2003 server on vmware
1 network adapter each
tomcat 6.0.20
sun jvm 1.6.0_14

[Mike Cantrell]

For what it's worth, the problem only occurred on vmware and windows. I switched the implementation to JGroups Multicast UDP and it works.