public boolean isResponse()
        {
        	if (opcode == PING_RESPONSE.toByte() ||
            	opcode == STORE_RESPONSE.toByte() ||
            	opcode == FIND_NODE_RESPONSE.toByte() ||
           		opcode == FIND_VALUE_RESPONSE.toByte()
           		)
            return true;
           	else
           		return false;
        }