Eclipse CVS extssh is broken under Windows 7 + Java 7

Question

I am using the 64-bit version of Windows 7. After installing Java 7 (part of the PS3 media server), when I previously used Java 6, my CVS Eclipse (Indigo Service Release 2, Build id: 20120216-1857) stopped working on the server, which on the VPN. I connect using the Cisco AnyConnect VPN Client version 2.5.2019. The error that I get whenever I try to connect to the repository is as follows:

Could not connect to :extssh: [e-mail] :/cvsroot/username/project: CVS communication error: org.eclipse.team.internal.ccvs.ssh2.CVSSSH2ServerConnection$SSH2IOException: Permission denied: connect Permission denied: connect 

I can get around it by making Eclipse work under the Java 6 JVM . This is not a firewall problem, because I turned off the Windows firewall, and Wireshark does not display traffic outside of the DNS lookup.

Both of my JREs (Java 6 and Java 7) are 32-bit versions; their paths respectively

 C:\Program Files (x86)\Java\jre6 C:\Program Files (x86)\Java\jre7 

Answer 1

I found an answer that is a very similar question, except that it includes SVN, not CVS. It seems that the “error” is that the Cisco AnyConnect VPN does not support IPv6 correctly, which is called with the new jre7.

So, adding the following to my eclipse.ini is a fix for my situation:

 openFile -vmargs -Djava.net.preferIPv4Stack=true