Intrinsic component configuration examples

Ensure data integrity in COM

In order to instruct the components to use RPC_C_AUTHN_LEVEL_PKT_INTEGRITY for the COM authentication level (CVE-2021-26414), you can use the following appsettings.json file (in QuickOPC 2022.1 and later):

{
  "OpcLabs.BaseLib.Runtime.InteropServices.ComManagement": {
    "Configuration": {
      "SecurityParameters": {
        "EnsureDataIntegrity": true
      }
    }
  }
}

Set the default URL of the OPC UA Global Discovery Server (GDS)

In order to set the default URL of the OPC UA Global Discovery Server (GDS) used by QuickOPC global discovery operations, you can use the following appsettings.json file:

{
  "OpcLabs.EasyOpc.UA.EasyUAClient": {
    "InstanceParameters": {
      "GdsEndpointDescriptor": {
        "UrlString": "opc.tcp://opcua.demo-this.com:58810/GlobalDiscoveryServer"
      }
    }
  } 
}

Use NET API implementation of OPC Data Access client

{
  "OpcLabs.EasyOpc.DataAccess.EasyDAClient": {
    "InstanceParameters": {
      "EnableNativeClient": false,
      "EnableNetApiClient": true
    }
  } 
}

File:Appsettings-using-net-api-implementation-of-opc-data-access-client.zip

If your project involves user interface, it needs to be configured too:

{
  "OpcLabs.EasyOpc.DataAccess.EasyDAClient": {
    "InstanceParameters": {
      "EnableNativeClient": false,
      "EnableNetApiClient": true
    }
  },

  "OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DADialog": {
    "ClientSelector": {
      "InstanceParameters": {
        "EnableNativeClient": false,
        "EnableNetApiClient": true
      }
    }
  }
}

File:Appsettings-using-net-api-implementation-of-opc-data-access-client-2.zip

Use NET API implementation for all OPC Classic operations

{
  "OpcLabs.EasyOpc.AlarmsAndEvents.EasyAEClient": {
    "InstanceParameters": {
      "EnableNativeClient": false,
      "EnableNetApiClient": true
    }
  },

  "OpcLabs.EasyOpc.AlarmsAndEvents.Forms.Browsing.AEDialog": {
    "ClientSelector": {
      "InstanceParameters": {
        "EnableNativeClient": false,
        "EnableNetApiClient": true
      }
    }
  },

  "OpcLabs.EasyOpc.DataAccess.EasyDAClient": {
    "InstanceParameters": {
      "EnableNativeClient": false,
      "EnableNetApiClient": true
    }
  },

  "OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DADialog": {
    "ClientSelector": {
      "InstanceParameters": {
        "EnableNativeClient": false,
        "EnableNetApiClient": true
      }
    }
  },

  "OpcLabs.EasyOpc.DataAccess.Forms.Browsing.OpcBrowseControl": {
    "ClientSelector": {
      "InstanceParameters": {
        "EnableNativeClient": false,
        "EnableNetApiClient": true
      }
    }
  },

  "OpcLabs.EasyOpc.DataAccess.Forms.Browsing.OpcBrowseDialog": {
    "ClientSelector": {
      "InstanceParameters": {
        "EnableNativeClient": false,
        "EnableNetApiClient": true
      }
    }
  }
}

File:Appsettings-using-net-api-implementation-for-all-opc-classic.zip