linux - What is java.net.NoRouteToHostException: Cannot assign requested address? -

I am running Openfire in an Amazon EC2, and after 28,000 connections, my stress test Reset and I see this error.

What is this?

I think your machine is out of available ports.

You can be sure that with the count of sockets in TIME_WAIT:

  netstat -a  

if it is confirmed You may consider adjusting the TCP configuration, eg as stated in: