[jboss-jira] [JBoss JIRA] Commented: (JGRP-792) JGroups ignores mcast_addr attribute in XML when "jgroups.udp.mcast_addr" is set

Thu Jun 26 13:15:59 EDT 2008

    [ http://jira.jboss.com/jira/browse/JGRP-792?page=comments#action_12419093 ] 

Wojciech Meler commented on JGRP-792:
-------------------------------------

I''m confused. What is the reason for having such priority order where global system properties are more important than local component configuration even if such behavior can be specified in local configuration when needed?

> JGroups ignores mcast_addr attribute in XML when "jgroups.udp.mcast_addr" is set
> --------------------------------------------------------------------------------
>
>                 Key: JGRP-792
>                 URL: http://jira.jboss.com/jira/browse/JGRP-792
>             Project: JGroups
>          Issue Type: Bug
>    Affects Versions: 2.6.2
>         Environment: linux, JDK 1.6, JBoss 4.2.1.GA
>            Reporter: Jacek Gerbszt
>         Assigned To: Bela Ban
>
> JGroups seems to ignore mcast_addr attribute of <UDP/> element in XML configuration file used as a parameter in JChannel constructor,  when the system property "jgroups.udp.mcast_addr" is set.
> This behaviour has been observed on JBoss 4.2.1.GA started with an argument: -u 239.192.0.5. I'm trying to connect to group in the start() method of my MBean:
> public void start() throws ChannelException {
> 		channel = new JChannel("my-udp.xml");
> 		channel.connect("MyGroup");
> 		UDP udp = (UDP) channel.getProtocolStack().findProtocol(UDP.class);
> 		log.info(udp.getInfo());
> }
> Unfortunately log.info() shows that channel is connected to 239.192.0.5 instead of IP configured in my-udp.xml. 
> It is a big problem when you want to connect from jboss to two different groups with two different multicast addresses.

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