实现OPC UA服务器功能，OPC UA服务器支持匿名访问、用户认证和客户证书认证

<?xml version="1.0" encoding="utf-8"?> <Settings> <NodeClass Name="factory_1" Description="分厂1"> <NodeClass Name="line1" Description="1线"> <Element Name="Temp" Description="温度" DataType="Double" Writable="1" Array="0" /> <Element Name="WindSpeed" Description="" DataType="Double" Writable="1" Array="0" /> </NodeClass> <NodeClass Name="line2" Description="2线"> <Element Name="Temp" Description="温度" DataType="Double" Writable="1" Array="0" /> <Element Name="WindSpeed" Description="" DataType="Double" Writable="1" Array="0" /> </NodeClass> </NodeClass> </Settings>