A DESCRIPTION OF THE PROBLEM :
As the title says, Socket::connect is not specified to throw UnknownHostException when called with an unresolved address.

This is a problem when the Socket was created with a SOCKS proxy (V5 SOCKS supports the passing of an unresolved address (e.g. an Tor .onion address) to the SOCKS server for resolution).


REGRESSION : Last worked in version 17

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a Socket with a SOCKS proxy and address to connect to an unresolved address

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
It works as before
ACTUAL -
An UnknownHost exception is thrown

---------- BEGIN SOURCE ----------
Proxy proxy = new Proxy( Proxy.Type.SOCKS, new InetSocketAddress( "127.0.0.1", 1234 ));

InetSocketAddress address = InetSocketAddress.createUnresolved( "www.google.com", 443 );

Socket socket = new Socket( proxy );

socket.connect( address );
---------- END SOURCE ----------

FREQUENCY : always