getting remote ip from ServerWebSocket

gistfile1.java

public static
InetSocketAddress getRemoteAddress (final ServerWebSocket ws) 
		throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException 
{    	
    InetSocketAddress addr = null;
    final WebSocketImplBase requestWS = (WebSocketImplBase)ws;

    Field f = WebSocketImplBase.class.getDeclaredField("conn"); //NoSuchFieldException
    f.setAccessible(true);
    ConnectionBase connectionBase = (ConnectionBase) f.get(requestWS); //IllegalAccessException

    f = ConnectionBase.class.getDeclaredField("channel"); //NoSuchFieldException
    f.setAccessible(true);
    NioSocketChannel channel = (NioSocketChannel) f.get(connectionBase); //IllegalAccessException

    if (channel != null) {
    	addr = channel.remoteAddress();
    }
    return addr;
}