/// <summary>
/// Returns list of GDS servers known to the LDS.
/// </summary>
/// <param name="lds">The LDS to use.</param>
/// <returns>
/// TRUE if successful; FALSE otherwise.
/// </returns>
public List <string> GetDefaultGdsUrls(LocalDiscoveryServerClient lds)
{
List <string> gdsUrls = new List <string>();
try
{
DateTime lastResetTime;
if (lds == null)
{
lds = new LocalDiscoveryServerClient(Configuration);
}
var servers = lds.FindServersOnNetwork(0, 1000, out lastResetTime);
foreach (var server in servers)
{
if (server.ServerCapabilities != null && server.ServerCapabilities.Contains(ServerCapability.GlobalDiscoveryServer))
{
gdsUrls.Add(server.DiscoveryUrl);
}
}
}
catch (Exception exception)
{
Utils.LogError(exception, "Unexpected error connecting to LDS");
}
return(gdsUrls);
}
public MainForm(ApplicationInstance application)
{
InitializeComponent();
Icon = ClientUtils.GetAppIcon();
m_application = application;
// get the configuration.
m_configuration = m_application.ApplicationConfiguration.ParseExtension <GlobalDiscoveryClientConfiguration>();
// use suitable defaults if no configuration exists.
if (m_configuration == null)
{
m_configuration = new GlobalDiscoveryClientConfiguration()
{
GlobalDiscoveryServerUrl = "opc.tcp://localhost:58810/GlobalDiscoveryServer",
ExternalEditor = "notepad.exe"
};
}
m_filters = new QueryServersFilter();
m_identity = new UserIdentity();
m_gds = new GlobalDiscoveryServerClient(m_application, m_configuration.GlobalDiscoveryServerUrl);
m_gds.KeepAlive += GdsServer_KeepAlive;
m_gds.ServerStatusChanged += GdsServer_StatusNotification;
m_lds = new LocalDiscoveryServerClient(m_application.ApplicationConfiguration);
m_server = new ServerPushConfigurationClient(m_application);
m_server.AdminCredentialsRequired += Server_AdminCredentialsRequired;
m_server.KeepAlive += Server_KeepAlive;
m_server.ServerStatusChanged += Server_StatusNotification;
m_server.ConnectionStatusChanged += Server_ConnectionStatusChanged;
RegistrationPanel.Initialize(m_gds, m_server, null, m_configuration);
m_application.ApplicationConfiguration.CertificateValidator.CertificateValidation += CertificateValidator_CertificateValidation;
UpdateStatus(true, DateTime.MinValue, "---");
UpdateGdsStatus(true, DateTime.MinValue, "---");
UpdateMainFormHeader();
ShowPanel(Panel.None);
SelectServerButton.Enabled = false;
ServerStatusButton.Enabled = false;
CertificateButton.Enabled = false;
HttpsCertificateButton.Visible = false;
TrustListButton.Enabled = false;
HttpsTrustListButton.Visible = false;
}
/// <summary>
/// Returns list of servers known to the LDS, excluding GDS servers.
/// </summary>
/// <param name="lds">The LDS to use.</param>
/// <returns>
/// TRUE if successful; FALSE otherwise.
/// </returns>
public List <string> GetDefaultServerUrls(LocalDiscoveryServerClient lds)
{
List <string> serverUrls = new List <string>();
try
{
DateTime lastResetTime;
if (lds == null)
{
lds = new LocalDiscoveryServerClient(this.Application.ApplicationConfiguration);
}
var servers = lds.FindServersOnNetwork(0, 1000, out lastResetTime);
foreach (var server in servers)
{
if (server.ServerCapabilities != null)
{
// ignore GDS and LDS servers
if (server.ServerCapabilities.Contains(ServerCapability.GlobalDiscoveryServer) ||
server.ServerCapabilities.Contains(ServerCapability.LocalDiscoveryServer))
{
continue;
}
}
serverUrls.Add(server.DiscoveryUrl);
}
}
catch (Exception exception)
{
Utils.Trace(exception, "Unexpected error connecting to LDS");
}
return(serverUrls);
}
