public String toString() {
    	StringBuffer sb = new StringBuffer();
    	sb.append("hash [" + this.hashCode() + "]\n");
    	sb.append("socket.isClosed [" + socket.isClosed() + "]\n");
    	sb.append("socket.isConnected [" + socket.isConnected() + "]\n");
    	//sb.append("Listener [" + listener.toString() + "]");
    	sb.append("senderThread [" + senderThread.toString() + "]\n");
    	sb.append("sendThread [" + sendThread.toString() + "]\n");
    	return sb.toString();
    }