DiscoverNetworkServers(IEnumerable<String>) Method

Discovers available OPC-UA servers on the network and returns information about them, using the default discovery host, and specifying the capabilities that the servers must have.

Syntax

[ElementsNotNull()]
[NotNull()]
public UADiscoveryElementCollection DiscoverNetworkServers( 
   IEnumerable<string> serverCapabilityFilter
)

[ElementsNotNull()]
[NotNull()]
public:
UADiscoveryElementCollection^ DiscoverNetworkServers( 
   IEnumerable<String^>^ serverCapabilityFilter
)

'Declaration
 
<ElementsNotNullAttribute()>
<NotNullAttribute()>
Public Overloads Function DiscoverNetworkServers( _
   ByVal serverCapabilityFilter As IEnumerable(Of String) _
) As UADiscoveryElementCollection

'Usage
 
Dim instance As EasyUAClientCore
Dim serverCapabilityFilter As IEnumerable(Of String)
Dim value As UADiscoveryElementCollection
 
value = instance.DiscoverNetworkServers(serverCapabilityFilter)

Parameters

serverCapabilityFilter: List of Server capability filters. Only records with all the specified server capabilities are returned.

Return Value

Returns a collection of application elements (usually servers, OpcLabs.EasyOpc.UA.Discovery.UADiscoveryElement).

Remarks

This method uses the so-called Local Discovery Server (LDS). You can influence how the discovery works using the properties in SharedParameters. The name of the machine that runs the discovery is determined by OpcLabs.EasyOpc.UA.Engine.EasyUAInstanceParameters.DiscoveryHost in InstanceParameters, and defaults to "localhost".

Invokes the FindServersOnNetwork service.

See also in Knowledge Base: Technical note-OPC UA Discovery in QuickOPC.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

EasyUAClientCore Class
EasyUAClientCore Members
Overload List
DiscoveryTimeout Property

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