// This example shows how to obtain notifications about the changes in the state of the endpoints that server exposes.
// You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
// OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.
using System;
using OpcLabs.EasyOpc.UA;
using OpcLabs.EasyOpc.UA.NodeSpace;
using OpcLabs.EasyOpc.UA.OperationModel;
namespace UAServerDocExamples._EasyUAServer
{
class EndpointStateChanged
{
public static void Main1()
{
// Instantiate the server object.
// By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
var server = new EasyUAServer();
// Define a data variable providing random integers.
var random = new Random();
server.Add(new UADataVariable("MyDataVariable").ReadValueFunction(() => random.Next()));
// Hook events.
server.EndpointStateChanged += ServerOnEndpointStateChanged;
// Start the server.
Console.WriteLine("The server is starting...");
server.Start();
Console.WriteLine("The server is started.");
Console.WriteLine();
// Let the user decide when to stop.
Console.WriteLine("Press Enter to stop the server...");
Console.ReadLine();
// Stop the server.
Console.WriteLine("The server is stopping...");
server.Stop();
Console.WriteLine("The server is stopped.");
}
// Event handler for the EndpointStateChanged event. It simply prints out the event.
private static void ServerOnEndpointStateChanged(object sender, EasyUAServerEndpointStateChangedEventArgs e)
{
Console.WriteLine(e);
// Following are some useful properties in the event notification:
// e.EndpointUrlString
// e.ConnectionState
// e.Exception
// e.Succeeded
}
}
}
# This example shows how to obtain notifications about the changes in the state of the endpoints that server exposes.
# You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server.
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
# OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-CSharp .
# Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
# a commercial license in order to use Online Forums, and we reply to every post.
#requires -Version 5.1
using namespace OpcLabs.EasyOpc.UA
using namespace OpcLabs.EasyOpc.UA.NodeSpace
using namespace OpcLabs.PowerShellManagement
# The path below assumes that the current directory is [ProductDir]/Examples-NET/PowerShell/Windows .
Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.ServerOpcUAComponents.dll"
Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.PowerShellManagement.dll"
# Event handler for the EndpointStateChanged event. It simply prints out the event.
[EasyUAServerEndpointStateChangedEventHandler]$ServerOnEndpointStateChanged = {
param($sender, $e)
Write-Host "$($e)"
# Following are some useful properties in the event notification:
# e.EndpointUrlString
# e.ConnectionState
# e.Exception
# e.Succeeded
}
# Instantiate the server object.
# By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
$server = New-Object EasyUAServer
# Define a data variable providing random integers.
$random = New-Object System.Random
$server.Add(([UADataVariableExtension]::ReadValueFunction((New-Object UADataVariable("MyDataVariable")), [RunspacedDelegateFactory]::NewRunspacedDelegate([System.Func[int]] { $random.Next() }) )))
# Hook events.
$server.add_EndpointStateChanged([RunspacedDelegateFactory]::NewRunspacedDelegate($ServerOnEndpointStateChanged))
# Start the server.
Write-Host "The server is starting..."
$server.Start()
Write-Host "The server is started."
Write-Host
# Let the user decide when to stop.
Write-Host "Press Enter to stop the server..."
Read-Host
# Stop the server.
Write-Host "The server is stopping..."
$server.Stop()
Write-Host "The server is stopped."
' This example shows how to obtain notifications about the changes in the state of the endpoints that server exposes.
' You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server.
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-VBNET .
' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
' a commercial license in order to use Online Forums, and we reply to every post.
Imports System
Imports OpcLabs.EasyOpc.UA
Imports OpcLabs.EasyOpc.UA.NodeSpace
Imports OpcLabs.EasyOpc.UA.OperationModel
Namespace Global.UAServerDocExamples._EasyUAServer
Partial Friend Class EndpointStateChanged
Shared Sub Main1()
' Instantiate the server object.
' By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
Dim server = New EasyUAServer()
' Define a data variable providing random integers.
Dim random = New Random()
server.Add(New UADataVariable("MyDataVariable").ReadValueFunction(Function() random.Next()))
' Hook events.
AddHandler server.EndpointStateChanged, AddressOf ServerOnEndpointStateChanged
' Start the server.
Console.WriteLine("The server is starting...")
server.Start()
Console.WriteLine("The server is started.")
Console.WriteLine()
' Let the user decide when to stop.
Console.WriteLine("Press Enter to stop the server...")
Console.ReadLine()
' Stop the server.
Console.WriteLine("The server is stopping...")
server.Stop()
Console.WriteLine("The server is stopped.")
End Sub
' Event handler for the EndpointStateChanged event. It simply prints out the event.
Private Shared Sub ServerOnEndpointStateChanged(ByVal sender As Object, ByVal e As EasyUAServerEndpointStateChangedEventArgs)
Console.WriteLine(e)
' Following are some useful properties in the event notification:
' e.EndpointUrlString
' e.ConnectionState
' e.Exception
' e.Succeeded
End Sub
End Class
End Namespace
