public async Task CreateSessionAsync(OpcUaClientConfiguration config)
{
SysLog.Info("Creating the Opcua client session.");
try
{
var endpoint = config.Endpoint;
if (endpoint != null)
{
var appConfig = await config.LoadOpcUaConfiguration();
appConfig.SecurityConfiguration.AutoAcceptUntrustedCertificates = true;
appConfig.CertificateValidator.CertificateValidation += (validator, e) => e.Accept = true;
if (endpoint.Description.SecurityPolicyUri != SecurityPolicies.None)
{
await appConfig.SecurityConfiguration.ApplicationCertificate?.Find(true);
}
var identity = GetUserIdentity(endpoint);
_session = await Session.Create(appConfig, endpoint, true, false, Constants.DefaultSessionName, Constants.DefaultSessionTimeoutMs, identity, null);
SysLog.Info("OpcUa client session successfully created");
}
else
{
SysLog.Warn("Failed to get OPC server url from connector source config.");
}
}
catch (Exception ex)
{
throw new Exception("Failed to load application configuration.", ex);
}
}
public OpcUaClient(AppSettings appSettings, Action <MonitoredItem, MonitoredItemNotificationEventArgs> callback)
{
_appSettings = appSettings;
_callback = callback;
_currentListMonitoredItemsSubscribed = new List <MonitoredItem>();
_config = new OpcUaClientConfiguration(appSettings.OpcUaServerUrl);
_checkConnectionTimer = new Timer
{
Interval = TimeSpan.FromMilliseconds(this._appSettings.ConnectionCheckIntervalMs).TotalMilliseconds
};
CreateOpcuaSessionAsync().GetAwaiter().GetResult();
CreateSubscription();
}