public override async Task StartAsync(CancellationToken cancellationToken)
{
_logger.LogInformation($"Worker started at: {DateTime.Now}");
StringCollection baseAddress = new StringCollection
{
DiscoveryEndpointUrl
};
StringCollection serverCapabilities = new StringCollection {
"DA"
};
StringCollection discoveryUrls = new StringCollection
{
"opc.tcp://opc.ua.global.discovery.server:58810/UADiscovery"
};
//Initialise
_applicationInstanceManager = new ApplicationInstanceManager(ApplicationName, ApplicationUri,
baseAddress,
serverCapabilities,
DiscoveryEndpointUrl,
DiscoveryEndpointApplicationUri,
discoveryUrls,
null,
_applicationType,
true);
try
{
_mainServer = new MainServer(_applicationInstanceManager);
_mainServer.Start(_applicationInstanceManager.ApplicationInstance.ApplicationConfiguration);
bool connected = _applicationInstanceManager.ConnectToGlobalDiscoveryServer("opc.tcp://opc.ua.global.discovery.server:58810/UADiscovery", "appadmin", "demo");
if (connected)
{
_applicationInstanceManager.RegisterApplication();
_applicationInstanceManager.RequestNewCertificatePullMode();
}
}
catch (Exception ex)
{
_logger.LogInformation("Exception: ", ex.StackTrace);
}
await base.StartAsync(cancellationToken);
}
private void Connect(bool connectToServer = false)
{
try
{
connectButton.Enabled = false;
disconnectButton.Enabled = true;
objectTreeView.Nodes.Clear();
objectTreeView.Enabled = false;
if (!connectToServer)
{
_applicationInstanceManager = new ApplicationInstanceManager(ApplicationName, ApplicationUri,
null, null, null, null, _globalDiscoveryServerUrls, _globalDiscoveryServerWellKnownUrls,
_applicationType, true);
}
if (globalDiscoveryServerUseCheckBox.Checked && !connectToServer)
{
globalDiscoveryServerConnectionStatusPanel.BackColor = Color.Red;
string gdsUserName = globalDiscoveryServerUseSecurityCheckBox.Checked
? globalDiscoveryServerUserNameTextBox.Text
: null;
string gdsUserPassword = globalDiscoveryServerUseSecurityCheckBox.Checked
? globalDiscoveryServerPasswordTextBox.Text
: null;
bool connectedToGDS =
_applicationInstanceManager.ConnectToGlobalDiscoveryServer(
globalDiscoveryServerDiscoveryURLTextBox.Text, gdsUserName, gdsUserPassword);
if (!connectedToGDS)
{
Disconnect();
return;
}
if (registerApplicationCheckBox.Checked)
{
_applicationInstanceManager.RegisterApplication();
}
if (requestNewCertificateCheckBox.Checked)
{
_applicationInstanceManager.RequestNewCertificatePullMode();
}
List <ServerOnNetwork> serversOnNetwork = _applicationInstanceManager.QueryServers();
discoveredServersListView.Items.Clear();
if (serversOnNetwork == null || !serversOnNetwork.Any())
{
Disconnect();
return;
}
ListViewItem[] discoveredServersListViewItems =
(from x in serversOnNetwork select new ListViewItem(x.DiscoveryUrl)).ToArray();
discoveredServersListView.Items.AddRange(discoveredServersListViewItems);
globalDiscoveryServerConnectionStatusPanel.BackColor = Color.Green;
}
if (!connectToServer && globalDiscoveryServerUseCheckBox.Checked)
{
return;
}
connectionStatusPanel.BackColor = Color.Red;
string userName = useSecurityCheckBox.Checked ? serverUserNameTextBox.Text : null;
string userPassword = useSecurityCheckBox.Checked ? serverPasswordTextBox.Text : null;
bool connectedToServer =
_applicationInstanceManager.ConnectToServer(serverDiscoveryURLTextBox.Text, userName, userPassword);
_applicationInstanceManager.GetRootExtendedDataDescriptions();
if (!connectedToServer)
{
return;
}
List <TreeNode> browsedObjects = new List <TreeNode>();
if (_applicationInstanceManager.FlatExtendedDataDescriptionDictionary.ContainsKey(ObjectIds.ObjectsFolder.Identifier.ToString()))
{
ExtendedDataDescription objectReference = _applicationInstanceManager.FlatExtendedDataDescriptionDictionary[ObjectIds.ObjectsFolder.Identifier.ToString()];
browsedObjects.Add(new TreeNode()
{
Text = objectReference.DataDescription.AttributeData.BrowseName.Name,
Tag = objectReference.DataDescription.AttributeData
});
}
if (_applicationInstanceManager.FlatExtendedDataDescriptionDictionary.ContainsKey(ObjectIds.TypesFolder.Identifier.ToString()))
{
ExtendedDataDescription typesReference = _applicationInstanceManager.FlatExtendedDataDescriptionDictionary[ObjectIds.TypesFolder.Identifier.ToString()];
browsedObjects.Add(new TreeNode()
{
Text = typesReference.DataDescription.AttributeData.BrowseName.Name,
Tag = typesReference.DataDescription.AttributeData
});
}
if (_applicationInstanceManager.FlatExtendedDataDescriptionDictionary.ContainsKey(ObjectIds.ViewsFolder.Identifier.ToString()))
{
ExtendedDataDescription viewReference = _applicationInstanceManager.FlatExtendedDataDescriptionDictionary[ObjectIds.ViewsFolder.Identifier.ToString()];
browsedObjects.Add(new TreeNode()
{
Text = viewReference.DataDescription.AttributeData.BrowseName.Name,
Tag = viewReference.DataDescription.AttributeData
});
}
objectTreeView.Enabled = true;
objectTreeView.Nodes.AddRange(browsedObjects.ToArray());
connectionStatusPanel.BackColor = Color.Green;
}
catch (Exception exception)
{
Console.WriteLine(exception);
Disconnect();
}
}
