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From "Przemek Bruski (JIRA)" <>
Subject [jira] Created: (AMQ-2771) Side effect from AMQ-2094, server listens on host name address, client connects to localhost with the same URI
Date Wed, 09 Jun 2010 13:12:51 GMT
Side effect from AMQ-2094, server listens on host name address, client connects to localhost
with the same URI

                 Key: AMQ-2771
             Project: ActiveMQ
          Issue Type: Wish
    Affects Versions: 5.3.2, 5.3.1, 5.3.0
            Reporter: Przemek Bruski contains the following code:

    protected String resolveHostName(String host) throws UnknownHostException {
        String localName = InetAddress.getLocalHost().getHostName();
        if (localName != null && isUseLocalHost()) {
            if (localName.equals(host)) {
                return "localhost";
        return host;
{code} contains the following code:

        InetAddress addr = InetAddress.getByName(host);

        try {

            this.serverSocket = serverSocketFactory.createServerSocket(bind.getPort(), backlog,

/etc/hosts looks like this:       localhost.localdomain   localhost
someip       myhostname.mydomain myhostname

Now, if I start server with uri: myhostname.mydomain, the server will listen on someip but
the client started on the same host with the same uri will try connect to localhost (and fail).

I know that useLocalHost can be used to avoid it, but silently connecting to localhost is
counterintuitive and does not sound like a valid default behaviour (according to documentation,
using localhost instead of the host name is a workaround, the workaround is now effectively
default behaviour and breaks valid setups that used to work with 5.2).

This worked fine on 5.2, since the server bound to all interfaces - but fixing this was obviously
the right thing to do.

1. Can the default behaviour be changed to one that would work on majority of systems?
2. Is the workaround really needed? Maybe it's the local network settings that should be corrected?
3. The debug messages are misleading and probably should be changed:

[ActiveMQ Task] [FailoverTransport:604] urlList connectionList:[tcp://hostname:54663?wireFormat.maxInactivityDuration=300000]
[ActiveMQ Task] [FailoverTransport:723] Attempting connect to: tcp://hostname:54663?wireFormat.maxInactivityDuration=300000
[ActiveMQ Task] [FailoverTransport:764] Connect fail to: tcp://hostname:54663?wireFormat.maxInactivityDuration=300000,
reason: Connection refused

In fact, it was the connection to localhost:54663 that was refused.

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