Searching the archives, I discovered this post by Peter Skeide with a problem using a VFS/FTP resolver.
http://old.nabble.com/vfs-resolver-hangs-when-using-FTP-p30286465.html http://grokbase.com/t/ant.apache.org/ivy-user/2010/11/vfs-resolver-hangs -when-using-ftp/235pcgkbgpqr2lgsh2lwalqzk7qm There is no response to it. I'm getting the same issue, and I suspect it's the same problem. One of our builds makes several publishes to our internal repo, and at random points, one of the publish attempts will hang. Examining the FTP logs, we see this: (004288) 10/31/2011 18:40:53 PM - ivyrepofull (10.40.222.47)> PORT 10,40,222,47,183,219 (004288) 10/31/2011 18:40:53 PM - ivyrepofull (10.40.222.47)> 200 Port command successful (004288) 10/31/2011 18:40:53 PM - ivyrepofull (10.40.222.47)> LIST org/module/trunk/latest (004288) 10/31/2011 18:40:53 PM - ivyrepofull (10.40.222.47)> 150 Opening data channel for directory list. (004288) 10/31/2011 18:40:53 PM - ivyrepofull (10.40.222.47)> 425 Can't open data connection. The 425 error seems to indicate a problem with the server (FileZilla server) being able to make a connection back to the client machine, and it's quite possible this is a firewall problem. Using passive mode might solve it, but I don't see anyway to do that in Ivy. Any suggestions? Ryan