A number of improvements to log messages around socket errors:

1. When autoConnectRetry is true, change retry message from severe to warning and text to:

   _logger.log(Level.WARNING, "Exception connecting to " +
               serverAddress().getHost() + ": " + e +
               ".  Total wait time so far is " + waitSoFar + 
               " ms.  Will retry after sleeping for " + sleepTime + " ms.");

2. Change "can't say something" error message to:

"Write operation to server " + port.host() + " failed ..."

3. Change "can't call something" error message to:

"Read operation to server " + port.host() + " failed ..."