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From Eric-AWL <eric.vinc...@atosorigin.com>
Subject Re: [jira] Commented: (AMQ-2771) Side effect from AMQ-2094, server listens on host name address, client connects to localhost with the same URI
Date Fri, 30 Jul 2010 15:28:50 GMT

Hi Gary

Ok I found the option in the networkConnection documentation, but, in 5.3.2

      <networkConnector name="TestDeCharge-DEFAULT-OUT"
                       
uri="multicast://default?group=TestDeCharge-DEFAULT&useLocalHost=false"
                        networkTTL="1"
                        conduitSubscriptions="false"
                        dynamicOnly="true"
                        duplex="false"/>

I get

2010/07/30;17:05:16:513;ERR;CInstance;Serveur(td0sib01s.priv.atos.fr);NA;NA;BUSACT-0000;(Exception)
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line
34 in XML document from class path resource [activemq.xml] is invalid;
nested exception is org.xml.sax.SAXParseException: The reference to entity
"useLocalHost" must end with the ';' delimiter.

if I swap group and useLocalHost :

<networkConnector name="TestDeCharge-DEFAULT-OUT"
                       
uri="multicast://default?useLocalHost=false&group=TestDeCharge-DEFAULT"
                        networkTTL="1"
                        conduitSubscriptions="false"
                        dynamicOnly="true"
                        duplex="false"/>


2010/07/30;17:15:09:279;ERR;CInstance;Serveur(td0sib01s.priv.atos.fr);NA;NA;BUSACT-0000;(Exception)
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line
34 in XML document from class path resource [activemq.xml] is invalid;
nested exception is org.xml.sax.SAXParseException: The reference to entity
"group" must end with the ';' delimiter.


If I use "&*amp;" as I found some answers for old forums questions

      <networkConnector name="TestDeCharge-DEFAULT-OUT"
                       
uri="multicast://default?group=TestDeCharge-DEFAULT&*amp;useLocalHost=false"
                        networkTTL="1"
                        conduitSubscriptions="false"
                        dynamicOnly="true"
                        duplex="false"/>

I get

2010/07/30;17:18:45:037;ERR;CInstance;Serveur(td0sib01s.priv.atos.fr);NA;NA;BUSACT-0000;(Exception)
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line
34 in XML document from class path resource [activemq.xml] is invalid;
nested exception is org.xml.sax.SAXParseException: The entity name must
immediately follow the '&' in the entity reference.

It seems to be a kind of AMQ-2598 error that referenced AMQ-1099

Sorry for all these small problems.

Eric-AWL


Gary Tully wrote:
> 
> append the transport options to the uri:
> 
> multicast://default?group=TestDeCharge-DEFAULT&useLocalHost=false
> 
> the discovery transport will pull off the parameters it knows about
> (eg group) and leave the rest for the discovered transport.
> 
> On 30 July 2010 15:25, Eric-AWL <eric.vincent@atosorigin.com> wrote:
>>
>> Euuuuh, I don't know if I understand what you explain me :
>>
>>      <networkConnector name="TestDeCharge-DEFAULT-OUT"
>>                      
>>  uri="multicast://default?group=TestDeCharge-DEFAULT"
>>                        networkTTL="1"
>>                        conduitSubscriptions="false"
>>                        dynamicOnly="true"
>>                        duplex="false"/>
>>
>> =>
>>       <networkConnector name="TestDeCharge-DEFAULT-OUT"
>>                      
>>  uri="multicast://default?group=TestDeCharge-DEFAULT"
>>                        networkTTL="1"
>>                        conduitSubscriptions="false"
>>                        dynamicOnly="true"
>>                        duplex="false"
>>                        useLocalHost="false"/>
>>
>> I don't see this new option of networkConnector in the documentation web
>> site.
>>
>> ???
>>
>>
>> JIRA jira@apache.org wrote:
>>>
>>>
>>>     [
>>> https://issues.apache.org/activemq/browse/AMQ-2771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=61003#action_61003
>>> ]
>>>
>>> Gary Tully commented on AMQ-2771:
>>> ---------------------------------
>>>
>>> it does look like the useLocalHost option should default to false as it
>>> is
>>> an override option that results in a hard coded answer.
>>>
>>> Eric, for the multicast case, apply the parameters to the multicast url
>>> used by the networkconnector, that fact that it is no longer propagated
>>> in
>>> the discovery multicast frame requires the option to be explicitly set
>>> by
>>> the user of that information.
>>>
>>>> Side effect from AMQ-2094, server listens on host name address, client
>>>> connects to localhost with the same URI
>>>> --------------------------------------------------------------------------------------------------------------
>>>>
>>>>                 Key: AMQ-2771
>>>>                 URL: https://issues.apache.org/activemq/browse/AMQ-2771
>>>>             Project: ActiveMQ
>>>>          Issue Type: Wish
>>>>    Affects Versions: 5.3.0, 5.3.1, 5.3.2
>>>>            Reporter: Przemek Bruski
>>>>             Fix For: 5.4.1
>>>>
>>>>         Attachments: BrokerServiceResolveHostTest.java
>>>>
>>>>
>>>> TcpTransport.java contains the following code:
>>>> {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}
>>>> TcpTransportServer.java contains the following code:
>>>> {code}
>>>>         InetAddress addr = InetAddress.getByName(host);
>>>>         try {
>>>>             this.serverSocket =
>>>> serverSocketFactory.createServerSocket(bind.getPort(), backlog, addr);
>>>> {code}
>>>> /etc/hosts looks like this:
>>>> {code}
>>>> 127.0.0.1       localhost.localdomain   localhost
>>>> someip       myhostname.mydomain myhostname
>>>> {code}
>>>> 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.
>>>> Questions:
>>>> 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:
>>>> java.net.ConnectException: Connection refused
>>>> In fact, it was the connection to localhost:54663 that was refused.
>>>
>>> --
>>> This message is automatically generated by JIRA.
>>> -
>>> You can reply to this email to add a comment to the issue online.
>>>
>>>
>>>
>>
>> --
>> View this message in context:
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>> Sent from the ActiveMQ - Dev mailing list archive at Nabble.com.
>>
>>
> 
> 
> 
> -- 
> http://blog.garytully.com
> 
> Open Source Integration
> http://fusesource.com
> 
> 

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