Getting `Can't assign requested address` java.net.SocketException using Ehcache multicast

Question

Getting java.net.SocketException when trying to start a multicast provider:

2013-09-11 11:45:44,204 [main] ERROR net.sf.ehcache.distribution.Mul         


        

Answer 1

In my case I had just began using a VPN to a network that required authentication. My app would start and could connect to its databases through the pipe fine but my configuration for distributed cache using the IP 230.0.0.1 in ehcach.xml was the cause. In production all was well, locally it would simply fail and rollback to a different strategy but via the VPN the multicast requests were met with an authentication challenge and this error was the result. I only required a short term fix so in these environments I disable the ehcache multicast configuration and things returned to normal.

This was the offending line in ehcache.xml which was simply commented out