private static void test2() { string strUri = "opc.tcp://DiscoveryServer:4841"; EasyUAClient.LogEntry += EasyUAClient_LogEntry; // Instantiate the client object EasyUAClient easyUAClient = new EasyUAClient() { Isolated = true, IsolatedParameters = { Session = { CertificateAcceptancePolicy = { AcceptAnyCertificate = true, AllowUserAcceptCertificate = false }, EndpointSelectionPolicy = { AllowedMessageSecurityModes = UAMessageSecurityModes.SecurityNone, //<-- As suggested OK! }, UserIdentity = { UserNameToken = { UserName = "xxx", Password = "yyy" } }, SelectBestEndpoint = true, //HoldPeriod = 60000 }, }, }; UAEndpointDescriptor uaEndpointDescriptor = new UAEndpointDescriptor(strUri) { UserName = "xxx", Password = "yyy" }; // Obtain data nodes under "Objects" node try { //UANodeElementCollection nodeElementCollection = easyUAClient.BrowseDataNodes(uaEndpointDescriptor); //<-- Also this throws timeout exception string res = easyUAClient.ReadValue(uaEndpointDescriptor, new UANodeDescriptor( "ns=2;s=TESTFolder/IMO2222222/MasterData/ApparelId/Name")).ToString(); // <--- timeout exception m_logHistory += string.Format("result='{0}'", res); Console.WriteLine(res); } catch (Exception ex) { Console.WriteLine(ex.Message)); } }

/// <summary> /// Specifies what security should be applied to messages exchanges during a Session. /// </summary> [Description("Specifies what security should be applied to messages exchanges during a Session.")] [Flags] public enum UAMessageSecurityModes { /// <summary> /// No security mode is specified. /// </summary> [Description("No security mode is specified.")] None = 0, /// <summary> /// No security is applied. /// </summary> [Description("No security is applied.")] SecurityNone = 1, /// <summary> /// All messages are signed but not encrypted. /// </summary> [Description("All messages are signed but not encrypted.")] SecuritySign = 2, /// <summary> /// All messages are signed and encrypted. /// </summary> [Description("All messages are signed and encrypted.")] SecuritySignAndEncrypt = 4, /// <summary> /// Any mode that is secure. /// </summary> [Description("Any mode that is secure.")] Secure = SecuritySign | SecuritySignAndEncrypt, /// <summary> /// All possible security modes, including no security. /// </summary> [Description("All possible security modes, including no security.")] All = SecurityNone | SecuritySign | SecuritySignAndEncrypt, }

string strUri = "opc.tcp://DiscoveryServer:4841"; // Instantiate the client object EasyUAClient easyUAClient = new EasyUAClient() { Isolated = true, IsolatedParameters = { //Discovery = { CheckApplicationDescription = true, DiscoveryTimeout = 10000 }, //Host = { ParallelDiscovery = true, DiscoveryUriTemplateStrings = new string[] { strUri }, ParallelDiscovery = false }, Session = { //CertificateAcceptancePolicy = { AcceptAnyCertificate = false, AllowUserAcceptCertificate = true }, EndpointSelectionPolicy = { AllowedMessageSecurityModes = UAMessageSecurityModes.None, //AllowZeroSecurityLevel = true, //MessageSecurityPreference = OpcLabs.BaseLib.Sign.None }, UserIdentity = { UserNameToken = { UserName = "xxx", Password = "yyy" } }, //AllowEndpointDomainPrompt = false, //CheckEndpointDomain = false, //DiagnosticsMasks = UADiagnosticsMasks.All, //SelectBestEndpoint = true, //UpdateEndpointBeforeConnect = true } }, //InstanceParameters = //{ // DiscoveryHost = strUri, // Mode = EasyUAClientMode.Default //} }; UAEndpointDescriptor uaEndpointDescriptor = new UAEndpointDescriptor(strUri); UANodeElementCollection nodeElementCollection = easyUAClient.BrowseDataNodes(uaEndpointDescriptor);

// This example shows how to subscribe to changes of multiple monitored items and display the value of the monitored item with // each change. using OpcLabs.EasyOpc.UA; using System; namespace UADocExamples { namespace _EasyUAClient { class SubscribeMultipleMonitoredItems { public static void Overload1() { // Instantiate the client object and hook events var easyUAClient = new EasyUAClient(); easyUAClient.MonitoredItemChanged += easyUAClient_MonitoredItemChanged; Console.WriteLine("Subscribing..."); easyUAClient.SubscribeMultipleMonitoredItems(new[] { new EasyUAMonitoredItemArguments(null, "http://localhost:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10845", 1000), new EasyUAMonitoredItemArguments(null, "http://localhost:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10853", 1000), new EasyUAMonitoredItemArguments(null, "http://localhost:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10855", 1000) }); Console.WriteLine("Processing monitored item changed events for 10 seconds..."); System.Threading.Thread.Sleep(10 * 1000); Console.WriteLine("Unsubscribing..."); easyUAClient.UnsubscribeAllMonitoredItems(); Console.WriteLine("Waiting for 5 seconds..."); System.Threading.Thread.Sleep(5 * 1000); } static void easyUAClient_MonitoredItemChanged(object sender, EasyUAMonitoredItemChangedEventArgs e) { // Display value // Remark: Production code would check e.Exception before accessing e.AttributeData. Console.WriteLine("{0}: {1}", e.Arguments.NodeDescriptor, e.AttributeData.Value); } } } }

var client = new EasyUAClient { Isolated = true, IsolatedParameters = { Session = { UserIdentity = { UserNameToken = { UserName = "usr", Password = "pwd" }}} } };

// Instantiate the client object var easyUAClient = new EasyUAClient(); // Obtain nodes under "Server" node string strUri = "opc.tcp://subDomain.domain.it:9999"; UAEndpointDescriptor endPointDescription = new UAEndpointDescriptor(strUri) { UserName = "myUser", Password = "xxx" }; UANodeElementCollection nodeElementCollection = easyUAClient.BrowseNodes( endPointDescription, UAObjectIds.Server, new UABrowseParameters(UANodeClass.All, new[] { UAReferenceTypeIds.References })); // Display results

easyUAClient.BrowseNodes(...

var client = new EasyUAClient { Isolated = true, IsolatedParameters = { Session = { UserIdentity = { X509CertificateToken = { FileName = "...", Password = "..." } } } } };

easyUAClient.SubscribeMonitoredItem( "http://localhost:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10853", 1000);

// Shows how to obtain references of all kinds to nodes of all classes, from the "Server" node in the address space. using System; using System.Diagnostics; using OpcLabs.EasyOpc.UA; namespace UADocExamples { namespace _EasyUAClient { class BrowseNodes { public static void Main() { // Instantiate the client object var easyUAClient = new EasyUAClient(); // Obtain nodes under "Server" node UANodeElementCollection nodeElementCollection = easyUAClient.BrowseNodes( "http://localhost:51211/UA/SampleServer", // or "opc.tcp://localhost:51210/UA/SampleServer" UAObjectIds.Server, new UABrowseParameters(UANodeClass.All, new [] { UAReferenceTypeIds.References } )); // Display results foreach (UANodeElement nodeElement in nodeElementCollection) { Debug.Assert(nodeElement != null); Console.WriteLine(); Console.WriteLine("nodeElement.NodeId: {0}", nodeElement.NodeId); Console.WriteLine("nodeElement.DisplayName: {0}", nodeElement.DisplayName); } } } } }