private async Task <Session> ConsoleSampleClient()
{
var application = new ApplicationInstance {
ApplicationType = ApplicationType.Client
};
#region Create an Application Configuration
Console.WriteLine(" 1 - Create an Application Configuration.");
ExitCode = ExitCode.ErrorCreateApplication;
// Load the Application Configuration and use the specified config section "Technosoftware.ModelDesignClient"
var config = await application.LoadConfigurationAsync("Technosoftware.ModelDesignClient");
// check the application certificate.
var haveAppCertificate = await application.CheckApplicationInstanceCertificateAsync(false, CertificateFactory.DefaultKeySize, CertificateFactory.DefaultLifeTime);
if (haveAppCertificate)
{
config.ApplicationUri = X509Utils.GetApplicationUriFromCertificate(config.SecurityConfiguration.ApplicationCertificate.Certificate);
if (config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
{
autoAccept_ = true;
}
config.CertificateValidator.CertificateValidation += OnCertificateValidation;
}
else
{
Console.WriteLine(" WARN: missing application certificate, using unsecured connection.");
}
#endregion
#region Discover endpoints
Console.WriteLine(" 2 - Discover endpoints of {0}.", endpointUrl_);
ExitCode = ExitCode.ErrorDiscoverEndpoints;
var selectedEndpoint = Discover.SelectEndpoint(endpointUrl_, haveAppCertificate, 15000);
Console.WriteLine(" Selected endpoint uses: {0}",
selectedEndpoint.SecurityPolicyUri.Substring(selectedEndpoint.SecurityPolicyUri.LastIndexOf('#') + 1));
#endregion
#region Create a session with OPC UA server
Console.WriteLine(" 3 - Create a session with OPC UA server.");
ExitCode = ExitCode.ErrorCreateSession;
// create the user identity
UserIdentity userIdentity;
if (String.IsNullOrEmpty(Username) && String.IsNullOrEmpty(Password))
{
userIdentity = new UserIdentity(new AnonymousIdentityToken());
}
else
{
userIdentity = new UserIdentity(Username, Password);
}
// create worker session
session_ = await CreateSessionAsync(config, selectedEndpoint, userIdentity).ConfigureAwait(false);
// register keep alive handler
session_.SessionKeepAliveEvent += OnSessionKeepAliveEvent;
#endregion
#region Browse the OPC UA Server
Console.WriteLine(" 4 - Browse address space.");
// Create the browser
var browser = new Browser(session_)
{
BrowseDirection = BrowseDirection.Forward,
ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences,
IncludeSubtypes = true,
NodeClassMask = 0,
ContinueUntilDone = false
};
// Browse from the RootFolder
var references = browser.Browse(Objects.ObjectsFolder);
GetElements(session_, browser, 0, references, Verbose);
#endregion
#region Read a single value
Console.WriteLine(" 5 - Read a single value.");
var simulatedDataValue = session_.ReadValue(machine1LevelNodeId_);
Console.WriteLine("Measurement Value:" + simulatedDataValue.Value);
#endregion
#region Create a subscription with publishing interval of 1 second
Console.WriteLine(" 6 - Create a subscription with publishing interval of 1 second.");
ExitCode = ExitCode.ErrorCreateSubscription;
subscription_ = new Subscription(session_.DefaultSubscription)
{
PublishingInterval = 1000
};
#endregion
#region Add all dynamic values and the server time to the subscription
Console.WriteLine(" 7 - Add the server time to the subscription.");
ExitCode = ExitCode.ErrorMonitoredItem;
var list = new List <MonitoredItem> {
new MonitoredItem(subscription_.DefaultItem)
{
DisplayName = "ServerStatusCurrentTime", StartNodeId = "i=" + Variables.Server_ServerStatus_CurrentTime
}
};
list.ForEach(i => i.MonitoredItemNotificationEvent += OnNotification);
subscription_.AddItems(list);
#endregion
#region Add the subscription to the session
Console.WriteLine(" 8 - Add the subscription to the session.");
ExitCode = ExitCode.ErrorAddSubscription;
session_.AddSubscription(subscription_);
subscription_.Create();
#endregion
#region Running...Press Ctrl-C to exit...
Console.WriteLine(" 9 - Running...Press Ctrl-C to exit...");
ExitCode = ExitCode.ErrorRunning;
#endregion
return(session_);
}
private async Task <Session> ConsoleSampleClient()
{
var application = new ApplicationInstance {
ApplicationType = ApplicationType.Client
};
#region Create an Application Configuration
Console.WriteLine(" 1 - Create an Application Configuration.");
ExitCode = ExitCode.ErrorCreateApplication;
// Load the Application Configuration and use the specified config section "Technosoftware.SimpleClient"
var config = await application.LoadConfigurationAsync("Technosoftware.SimpleClient");
// check the application certificate.
var haveAppCertificate = await application.CheckApplicationInstanceCertificateAsync(false, CertificateFactory.DefaultKeySize, CertificateFactory.DefaultLifeTime);
reverseConnectManager_ = null;
if (ReverseConnectUri != null)
{
// start the reverse connection manager
reverseConnectManager_ = new ReverseConnectManager();
reverseConnectManager_.AddEndpoint(ReverseConnectUri);
reverseConnectManager_.StartService(config);
}
if (haveAppCertificate)
{
config.ApplicationUri = X509Utils.GetApplicationUriFromCertificate(config.SecurityConfiguration.ApplicationCertificate.Certificate);
if (config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
{
autoAccept_ = true;
}
config.CertificateValidator.CertificateValidation += OnCertificateValidation;
}
else
{
Console.WriteLine(" WARN: missing application certificate, using unsecured connection.");
}
#endregion
#region Discover endpoints
Console.WriteLine(" 2 - Discover endpoints of {0}.", endpointUrl_);
ExitCode = ExitCode.ErrorDiscoverEndpoints;
EndpointDescription selectedEndpoint;
if (reverseConnectManager_ == null)
{
selectedEndpoint = Discover.SelectEndpoint(endpointUrl_, haveAppCertificate && !SecurityNone, 15000);
}
else
{
Console.WriteLine(" Waiting for reverse connection.");
var connection = await reverseConnectManager_.WaitForConnection(
new Uri(endpointUrl_), null, new CancellationTokenSource(60000).Token);
if (connection == null)
{
throw new ServiceResultException(StatusCodes.BadTimeout, "Waiting for a reverse connection timed out.");
}
selectedEndpoint = Discover.SelectEndpoint(config, connection, haveAppCertificate && !SecurityNone, 15000);
}
Console.WriteLine(" Selected endpoint uses: {0}",
selectedEndpoint.SecurityPolicyUri.Substring(selectedEndpoint.SecurityPolicyUri.LastIndexOf('#') + 1));
#endregion
#region Create a session with OPC UA server
Console.WriteLine(" 3 - Create a session with OPC UA server.");
ExitCode = ExitCode.ErrorCreateSession;
// create the user identity
UserIdentity userIdentity;
if (String.IsNullOrEmpty(Username) && String.IsNullOrEmpty(Password))
{
userIdentity = new UserIdentity(new AnonymousIdentityToken());
}
else
{
userIdentity = new UserIdentity(Username, Password);
}
// create worker session
if (reverseConnectManager_ == null)
{
session_ = await CreateSessionAsync(config, selectedEndpoint, userIdentity).ConfigureAwait(false);
}
else
{
Console.WriteLine(" Waiting for reverse connection.");
// Define the cancellation token.
var source = new CancellationTokenSource(60000);
var token = source.Token;
try
{
var connection = await reverseConnectManager_.WaitForConnection(
new Uri(endpointUrl_), null, token);
if (connection == null)
{
throw new ServiceResultException(StatusCodes.BadTimeout,
"Waiting for a reverse connection timed out.");
}
session_ = await CreateSessionAsync(config, connection, selectedEndpoint, userIdentity)
.ConfigureAwait(false);
}
finally
{
source.Dispose();
}
}
// register keep alive handler
session_.SessionKeepAliveEvent += OnSessionKeepAliveEvent;
#endregion
#region Browse the OPC UA Server
Console.WriteLine(" 4 - Browse address space.");
// Create the browser
var browser = new Browser(session_)
{
BrowseDirection = BrowseDirection.Forward,
ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences,
IncludeSubtypes = true,
NodeClassMask = 0,
ContinueUntilDone = false
};
// Browse from the RootFolder
var references = browser.Browse(Objects.ObjectsFolder);
GetElements(session_, browser, 0, references, Verbose);
#endregion
#region Read a single value
Console.WriteLine(" 5 - Read a single value.");
var simulatedDataValue = session_.ReadValue(simulatedDataNodeId_);
Console.WriteLine("Node Value:" + simulatedDataValue.Value);
#endregion
#region Read multiple values
Console.WriteLine(" 6 - Read multiple values.");
// The input parameters of the ReadValues() method
var variableIds = new List <NodeId>();
var expectedTypes = new List <Type>();
// Add a node to the list
variableIds.Add(simulatedDataNodeId_);
// Add an expected type to the list (null means we get the original type from the server)
expectedTypes.Add(null);
// Add another node to the list
variableIds.Add(staticDataNodeId1_);
// Add an expected type to the list (null means we get the original type from the server)
expectedTypes.Add(null);
// Add another node to the list
variableIds.Add(staticDataNodeId2_);
// Add an expected type to the list (null means we get the original type from the server)
expectedTypes.Add(null);
session_.ReadValues(variableIds, expectedTypes, out var values, out var errors);
// write the result to the console.
for (var i = 0; i < values.Count; i++)
{
Console.WriteLine("Status of Read of Node {0} is: {1}", variableIds[i].ToString(), errors[i]);
}
for (var i = 0; i < values.Count; i++)
{
Console.WriteLine("Value of Read of Node {0} is: Value: {1}", variableIds[i].ToString(), values[i]);
}
#endregion
#region Read multiple values asynchronous
Console.WriteLine(" 7 - Read multiple values asynchronous.");
// start reading the value (setting a 10 second timeout).
session_.BeginReadValues(
variableIds,
0,
TimestampsToReturn.Both,
OnReadComplete,
new UserData {
Session = session_, NodeIds = variableIds
});
#endregion
#region Write a value
Console.WriteLine(" 8 - Write a value.");
short writeInt = 1234;
Console.WriteLine("Write Value: " + writeInt);
session_.WriteValue(staticDataNodeId1_, new DataValue(writeInt));
// read it again to check the new value
Console.WriteLine("Node Value (should be {0}): {1}", session_.ReadValue(staticDataNodeId1_).Value, writeInt);
#endregion
#region Write multiple values at once
Console.WriteLine(" 9 - Write multiple values at once.");
writeInt = 5678;
var writeDouble = 1234.1234;
var nodeIds = new List <NodeId>();
var dataValues = new List <DataValue>();
nodeIds.Add(staticDataNodeId1_);
nodeIds.Add(staticDataNodeId2_);
dataValues.Add(new DataValue(writeInt));
dataValues.Add(new DataValue(writeDouble));
Console.WriteLine("Write Values: {0} and {1}", writeInt, writeDouble);
var statusCodes = session_.WriteValues(nodeIds, dataValues);
Console.WriteLine("Returned status codes:");
foreach (var statusCode in statusCodes)
{
Console.WriteLine("Status: {0}", statusCode.ToString());
}
// read it again to check the new value
Console.WriteLine("Node Value (should be {0}): {1}", session_.ReadValue(staticDataNodeId1_).Value, writeInt);
Console.WriteLine("Node Value (should be {0}): {1}", session_.ReadValue(staticDataNodeId2_).Value, writeDouble);
#endregion
#region Write multiple values asynchronous
Console.WriteLine("10 - Write multiple values asynchronous.");
// start writing the values.
session_.BeginWriteValues(
nodeIds,
dataValues,
OnWriteComplete,
new UserData {
Session = session_, NodeIds = nodeIds
});
#endregion
#region Call a Method
Console.WriteLine("11 - Call a Method.");
INode node = session_.ReadNode(callHelloMethodNodeId_);
if (node is MethodNode)
{
var methodId = callHelloMethodNodeId_;
var objectId = methodsNodeId_;
var inputArguments = new VariantCollection {
new Variant("from Technosoftware")
};
var request = new CallMethodRequest {
ObjectId = objectId, MethodId = methodId, InputArguments = inputArguments
};
var requests = new CallMethodRequestCollection {
request
};
var responseHeader = session_.Call(
null,
requests,
out var results,
out var diagnosticInfos);
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(new ServiceResult(results[0].StatusCode, 0, diagnosticInfos,
responseHeader.StringTable));
}
Console.WriteLine("{0}", results[0].OutputArguments[0]);
}
#endregion
#region Create a subscription with publishing interval of 1 second
Console.WriteLine("12 - Create a subscription with publishing interval of 1 second.");
ExitCode = ExitCode.ErrorCreateSubscription;
subscription_ = new Subscription(session_.DefaultSubscription)
{
PublishingInterval = 1000
};
#endregion
#region Add all dynamic values and the server time to the subscription
Console.WriteLine("13 - Add all dynamic values and the server time to the subscription.");
ExitCode = ExitCode.ErrorMonitoredItem;
var list = new List <MonitoredItem> {
new MonitoredItem(subscription_.DefaultItem)
{
DisplayName = "ServerStatusCurrentTime", StartNodeId = "i=" + Variables.Server_ServerStatus_CurrentTime
}
};
list.ForEach(i => i.MonitoredItemNotificationEvent += OnNotification);
var newItem = new MonitoredItem(subscription_.DefaultItem)
{
DisplayName = "Simulated Data Value",
StartNodeId = new NodeId(simulatedDataNodeId_)
};
newItem.MonitoredItemNotificationEvent += OnMonitoredItemNotificationEvent;
list.Add(newItem);
subscription_.AddItems(list);
#endregion
#region Add the subscription to the session
Console.WriteLine("14 - Add the subscription to the session.");
ExitCode = ExitCode.ErrorAddSubscription;
session_.AddSubscription(subscription_);
subscription_.Create();
#endregion
#region Running...Press Ctrl-C to exit...
Console.WriteLine("15 - Running...Press Ctrl-C to exit...");
ExitCode = ExitCode.ErrorRunning;
#endregion
return(session_);
}