'Declaration
 
<ExtensionAttribute()>
<ElementsNotNullAttribute()>
<NotNullAttribute()>
Public Overloads Shared Function DiscoverNetworkServers( _
   ByVal client As IEasyUAClient, _
   ByVal serverCapabilityFilter As IEnumerable(Of String), _
   ByVal discoveryHost As String, _
   ByVal flat As Boolean _
) As UADiscoveryElementCollection

'Usage
 
Dim client As IEasyUAClient
Dim serverCapabilityFilter As IEnumerable(Of String)
Dim discoveryHost As String
Dim flat As Boolean
Dim value As UADiscoveryElementCollection
 
value = IEasyUAClientExtension.DiscoverNetworkServers(client, serverCapabilityFilter, discoveryHost, flat)

[Extension()]
[ElementsNotNull()]
[NotNull()]
public static UADiscoveryElementCollection DiscoverNetworkServers( 
   IEasyUAClient client,
   IEnumerable<string> serverCapabilityFilter,
   string discoveryHost,
   bool flat
)

[Extension()]
[ElementsNotNull()]
[NotNull()]
public:
static UADiscoveryElementCollection^ DiscoverNetworkServers( 
   IEasyUAClient^ client,
   IEnumerable<String^>^ serverCapabilityFilter,
   String^ discoveryHost,
   bool flat
) 

Parameters

client

The client object that will perform the operation.

serverCapabilityFilter

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

discoveryHost

The name of the machine that runs the discovery server that will be used for discovery task.

flat

Determines whether one element will be returned for each discovery URI.

Return Value

This method uses the so-called Local Discovery Server with Multicast Extensions (LDS-NE). You can influence how the discovery works using the properties in SharedParameters.

Invokes the FindServersOnNetwork service.

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

When the flat parameter is false, the discovery query returns one OpcLabs.EasyOpc.UA.Discovery.UADiscoveryElement for each application found, and its OpcLabs.EasyOpc.UA.Discovery.IUAReadOnlyApplicationElement.DiscoveryUriStrings property contains one or more application discovery URLs.

When the flat parameter is true, the discovery query returns one OpcLabs.EasyOpc.UA.Discovery.UADiscoveryElement for each discovery URL of each application found. In this case, the OpcLabs.EasyOpc.UA.Discovery.IUAReadOnlyApplicationElement.DiscoveryUriStrings property of each returned application element contains precisely one string, and you can therefore use the OpcLabs.EasyOpc.UA.Discovery.IUAReadOnlyApplicationElement.DiscoveryUriString property instead to obtain the discovery URL.

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