check all bind_address against NetworkInterface.getByInetAddress() to see if it exists on the machine ----------------------------------------------------------------------------------------------------- Key: JGRP-739 URL: http://jira.jboss.com/jira/browse/JGRP-739 Project: JGroups Issue Type: Feature Request Reporter: Michael Newcomb Assigned To: Bela Ban Priority: Minor Could you add a check in Util.getBindAddress() that checks the bind_addr against NetworkInterface.getByInetAddress() and throws some sort of exception if no NetworkInterface is returned? I set my bind_addr via a database parameter and if the user mistakenly assigns the wrong bind address, it doesn't show up until UDP.createEphemeralDatagramSocket() when the localPort goes over 65535 because each attempt to create a DatagramSocket with the inet address that is not a local address throws a SocketException (actually a BindException) which is caught but ignored. When localPort finally goes over 65535 it throws an IllegalArgumentException. So, a check in Util.getBindAddress() to see if the bind_addr is even available on the machine would lead to a failure in the configuration stage (setProperties). As a side question, doesn't creating a DatagramSocket with port=0 guarantee an ephemeral port? Is it necessary to 'scan' for one? Perhaps a failure from the initial attempt with port=0 would wait a few ms and then try again with port=0? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira