// This example shows different ways of constructing the EasyUAServer object. // 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-OPCStudio-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.Engine; using OpcLabs.EasyOpc.UA.NodeSpace; namespace UAServerDocExamples._EasyUAServer { class _Construction { public static void Main1() { // The toolkit provides a ready-made shared instance of the server object which you can use without even having // to construct it. Not recommended for use in library code, because it is a shared instance, and its usage may // therefore conflict with other code using the same instance. var server0 = EasyUAServer.SharedInstance; // The simplest way to construct the server object is to use the default constructor. The server will run on its // default endpoint URL "opc.tcp://localhost:48040/". var server1 = new EasyUAServer(); // The server object can be constructed with a specific single endpoint URL string passed as an argument to the // constructor. var server2 = new EasyUAServer("opc.tcp://localhost:38444"); // The server object can also be constructed with multiple endpoint URL strings passed as an array to the // constructor. var server3 = new EasyUAServer(new [] { "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446" }); // If the language supports variable number of arguments (such as C# or VB.NET), the multiple endpoint URL // strings can be passed to it as separate arguments, instead of having to create an array of them. var server4 = new EasyUAServer( "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446"); // The server object can be constructed with specific message security modes. var server5 = new EasyUAServer(UAMessageSecurityModes.Secure); // The message security modes can be combined with the endpoint URL string. var server6 = new EasyUAServer(UAMessageSecurityModes.Secure, "opc.tcp://localhost:38444"); // The message security modes can also be combined with multiple endpoint URL strings in an array. var server7 = new EasyUAServer(UAMessageSecurityModes.Secure, new[] { "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446" }); // If the language supports variable number of arguments (such as C# or VB.NET), the message security modes can // be combined with multiple endpoint URL strings passed to it as separate arguments, instead of having to create // an array of them. var server8 = new EasyUAServer( UAMessageSecurityModes.Secure, "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446"); // The endpoint can be specified using the Uri object. var server9 = new EasyUAServer(new Uri("opc.tcp://localhost:38444")); // The server object can also be constructed with multiple Uri objects for server endpoints, passed as an array // to the constructor. var server10 = new EasyUAServer(new[] { new Uri("opc.tcp://localhost:38444"), new Uri("opc.tcp://localhost:38445"), new Uri("opc.tcp://localhost:38446") }); // If the language supports variable number of arguments (such as C# or VB.NET), the multiple endpoint Uri // objects can be passed to it as separate arguments, instead of having to create an array of them. var server11 = new EasyUAServer( new Uri("opc.tcp://localhost:38444"), new Uri("opc.tcp://localhost:38445"), new Uri("opc.tcp://localhost:38446") ); // The message security modes can be combined with the endpoint Uri object. var server12 = new EasyUAServer(UAMessageSecurityModes.Secure, new Uri("opc.tcp://localhost:38444")); // The message security modes can also be combined with multiple endpoint Uri objects in an array. var server13 = new EasyUAServer(UAMessageSecurityModes.Secure, new[] { new Uri("opc.tcp://localhost:38444"), new Uri("opc.tcp://localhost:38445"), new Uri("opc.tcp://localhost:38446") }); // If the language supports variable number of arguments (such as C# or VB.NET), the message security modes can // be combined with multiple endpoint Uri objects passed to it as separate arguments, instead of having to create // an array of them. var server14 = new EasyUAServer( UAMessageSecurityModes.Secure, new Uri("opc.tcp://localhost:38444"), new Uri("opc.tcp://localhost:38445"), new Uri("opc.tcp://localhost:38446") ); // The message security modes and the endpoint URL string can be set after the server object is constructed. var server15 = new EasyUAServer(); server15.MessageSecurityModes = UAMessageSecurityModes.Secure; server15.EndpointUrlString = "opc.tcp://localhost:38444"; // If the language supports property initializers (such as C# or VB.NET), the above code can be written more // concisely. var server16 = new EasyUAServer { MessageSecurityModes = UAMessageSecurityModes.Secure, EndpointUrlString = "opc.tcp://localhost:38444" }; // If the language supports collection initializers (such as C# or VB.NET), the server object can be constructed // with the contents of the Objects folder, such as the data variables, in a single statement. var server17 = new EasyUAServer { new UADataVariable("Constant1").ConstantValue(42), new UADataVariable("Constant2").ConstantValue("abc") }; } } }
' This example shows different ways of constructing the EasyUAServer object. ' 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 and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-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 Opc.Ua Imports OpcLabs.EasyOpc.UA Imports OpcLabs.EasyOpc.UA.Engine Imports OpcLabs.EasyOpc.UA.NodeSpace Namespace _EasyUAServer Partial Friend Class _Construction Shared Sub Main1() ' The toolkit provides a ready-made shared instance of the server object which you can use without even having ' to construct it. Not recommended for use in library code, because it is a shared instance, and its usage may ' therefore conflict with other code using the same instance. Dim server0 = EasyUAServer.SharedInstance ' The simplest way to construct the server object is to use the default constructor. The server will run on its ' default endpoint URL "opc.tcp://localhost:48040/". Dim server1 = New EasyUAServer() ' The simplest way to construct the server object is to use the default constructor. The server will run on its ' constructor. Dim server2 = New EasyUAServer("opc.tcp://localhost:38444") ' The server object can also be constructed with multiple endpoint URL strings passed as an array to the ' constructor. Dim server3 = New EasyUAServer( { "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446" }) ' If the language supports variable number of arguments (such as C# or VB.NET), the multiple endpoint URL ' strings can be passed to it as separate arguments, instead of having to create an array of them. Dim server4 = New EasyUAServer( "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446") ' The server object can be constructed with specific message security modes. Dim server5 = New EasyUAServer(UAMessageSecurityModes.Secure) ' The message security modes can be combined with the endpoint URL string. Dim server6 = New EasyUAServer(UAMessageSecurityModes.Secure, "opc.tcp://localhost:38444") ' The message security modes can also be combined with multiple endpoint URL strings in an array. Dim server7 = New EasyUAServer(UAMessageSecurityModes.Secure, { "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446" }) ' If the language supports variable number of arguments (such as C# or VB.NET), the message security modes can ' be combined with multiple endpoint URL strings passed to it as separate arguments, instead of having to create ' an array of them. Dim server8 = New EasyUAServer( UAMessageSecurityModes.Secure, "opc.tcp://localhost:38444", "opc.tcp://localhost:38445", "opc.tcp://localhost:38446") ' The endpoint can be specified using the Uri object. Dim server9 = New EasyUAServer(New Uri("opc.tcp://localhost:38444")) ' The server object can also be constructed with multiple Uri objects for server endpoints, passed as an array ' to the constructor. Dim server10 = New EasyUAServer( { New Uri("opc.tcp://localhost:38444"), New Uri("opc.tcp://localhost:38445"), New Uri("opc.tcp://localhost:38446") }) ' If the language supports variable number of arguments (such as C# or VB.NET), the multiple endpoint Uri ' objects can be passed to it as separate arguments, instead of having to create an array of them. Dim server11 = New EasyUAServer( New Uri("opc.tcp://localhost:38444"), New Uri("opc.tcp://localhost:38445"), New Uri("opc.tcp://localhost:38446") ) ' The message security modes can be combined with the endpoint Uri object. Dim server12 = New EasyUAServer(UAMessageSecurityModes.Secure, New Uri("opc.tcp://localhost:38444")) ' The message security modes can also be combined with multiple endpoint Uri objects in an array. Dim server13 = New EasyUAServer(UAMessageSecurityModes.Secure, { New Uri("opc.tcp://localhost:38444"), New Uri("opc.tcp://localhost:38445"), New Uri("opc.tcp://localhost:38446") }) ' If the language supports variable number of arguments (such as C# or VB.NET), the message security modes can ' be combined with multiple endpoint Uri objects passed to it as separate arguments, instead of having to create ' an array of them. Dim server14 = New EasyUAServer( UAMessageSecurityModes.Secure, New Uri("opc.tcp://localhost:38444"), New Uri("opc.tcp://localhost:38445"), New Uri("opc.tcp://localhost:38446") ) ' The message security modes and the endpoint URL string can be set after the server object is constructed. Dim server15 = New EasyUAServer() server15.MessageSecurityModes = UAMessageSecurityModes.Secure server15.EndpointUrlString = "opc.tcp://localhost:38444" ' If the language supports property initializers (such as C# or VB.NET), the above code can be written more ' concisely. Dim server16 = New EasyUAServer With { .MessageSecurityModes = UAMessageSecurityModes.Secure, .EndpointUrlString = "opc.tcp://localhost:38444" } ' If the language supports collection initializers (such as C# or VB.NET), the server object can be constructed ' with the contents of the Objects folder, such as the data variables, in a single statement. Dim server17 = New EasyUAServer From { New UADataVariable("Constant1").ConstantValue(42), New UADataVariable("Constant2").ConstantValue("abc") } End Sub End Class End Namespace
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