/// <summary>
/// Initializes a new instance of the class.
/// </summary>
public FrmSecurityOptions(OpcConnectionOptions connectionOptions)
: this()
{
this.connectionOptions = connectionOptions;
FillComboBoxes();
}
/// <summary>
/// Connects to the OPC server asynchronously.
/// </summary>
public async Task <bool> ConnectAsync(OpcConnectionOptions connectionOptions, int operationTimeout = -1)
{
ApplicationInstance application = new ApplicationInstance
{
ApplicationName = string.Format("DrvOpcUa_{0} Driver", deviceNumStr),
ApplicationType = ApplicationType.Client,
ConfigSectionName = "Scada.Comm.Drivers.DrvOpcUa"
};
// load the application configuration
// TODO: use stream instead of file after updating OPCFoundation.NetStandard.Opc.Ua
WriteConfigFile(out string configFileName);
ApplicationConfiguration config = await application.LoadApplicationConfiguration(configFileName, false);
// check the application certificate
bool haveAppCertificate = await application.CheckApplicationInstanceCertificate(false, 0);
if (!haveAppCertificate)
{
throw new ScadaException(Locale.IsRussian ?
"Сертификат экземпляра приложения недействителен!" :
"Application instance certificate invalid!");
}
if (haveAppCertificate)
{
config.ApplicationUri = X509Utils.GetApplicationUriFromCertificate(
config.SecurityConfiguration.ApplicationCertificate.Certificate);
if (config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
{
AutoAccept = true;
}
config.CertificateValidator.CertificateValidation += CertificateValidator_CertificateValidation;
}
else
{
log.WriteLine(Locale.IsRussian ?
"Предупреждение: отсутствует сертификат приложения, используется незащищенное соединение." :
"Warning: missing application certificate, using unsecure connection.");
}
// create session
EndpointDescription selectedEndpoint = operationTimeout > 0
? CoreClientUtils.SelectEndpoint(connectionOptions.ServerUrl, haveAppCertificate, operationTimeout)
: CoreClientUtils.SelectEndpoint(connectionOptions.ServerUrl, haveAppCertificate);
selectedEndpoint.SecurityMode = connectionOptions.SecurityMode;
selectedEndpoint.SecurityPolicyUri = connectionOptions.GetSecurityPolicy();
EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(config);
ConfiguredEndpoint endpoint = new ConfiguredEndpoint(null, selectedEndpoint, endpointConfiguration);
UserIdentity userIdentity = connectionOptions.AuthenticationMode == AuthenticationMode.Username ?
new UserIdentity(connectionOptions.Username, connectionOptions.Password) :
new UserIdentity(new AnonymousIdentityToken());
OpcSession = await Session.Create(config, endpoint, false,
"Rapid SCADA DrvOpcUa_" + deviceNumStr,
(uint)config.ClientConfiguration.DefaultSessionTimeout, userIdentity, null);
log.WriteLine(Locale.IsRussian ?
"OPC сессия успешно создана: {0}" :
"OPC session created successfully: {0}", connectionOptions.ServerUrl);
return(true);
}