| public Open ( string sessionName, IUserIdentity identity ) : void | ||
| sessionName | string | The name to assign to the session. |
| identity | IUserIdentity | The user identity. |
| return | void | |
/// <summary>
/// Creates a new session.
/// </summary>
private Session CreateSession()
{
try
{
Cursor = Cursors.WaitCursor;
ServiceMessageContext messageContext = m_configuration.CreateMessageContext();
BindingFactory bindingFactory = BindingFactory.Create(m_configuration, messageContext);
ConfiguredEndpoint endpoint = this.EndpointsCTRL.SelectedEndpoint;
endpoint.UpdateFromServer(bindingFactory);
// Initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
m_configuration,
endpoint.Description,
endpoint.Configuration,
m_configuration.SecurityConfiguration.ApplicationCertificate.Find(true),
messageContext);
// Wrap the channel with the session object.
Session session = new Session(channel, m_configuration, endpoint, null);
// Create the session. This actually connects to the server.
session.Open(Guid.NewGuid().ToString(), null);
return session;
}
finally
{
Cursor = Cursors.Default;
}
}
/// <summary>
/// Recreates a session based on a specified template.
/// </summary>
/// <param name="template">The Session object to use as template</param>
/// <returns>The new session object.</returns>
public static Session Recreate(Session template)
{
// create the channel object used to connect to the server.
ITransportChannel channel = SessionChannel.Create(
template.m_configuration,
template.m_endpoint.Description,
template.m_endpoint.Configuration,
template.m_instanceCertificate,
template.m_configuration.CreateMessageContext());
// create the session object.
Session session = new Session(channel, template, true);
try
{
// open the session.
session.Open(
template.m_sessionName,
(uint)template.m_sessionTimeout,
template.m_identity,
template.m_preferredLocales);
// create the subscriptions.
foreach (Subscription subscription in session.Subscriptions)
{
subscription.Create();
}
}
catch (Exception e)
{
session.Dispose();
throw ServiceResultException.Create(StatusCodes.BadCommunicationError, e, "Could not recreate session. {0}", template.m_sessionName);
}
return session;
}
static void Main(string[] args)
{
VariableBrowsePaths = new List<string>();
VariableBrowsePaths.Add("/6:Data/6:Dynamic/6:Scalar/6:Int32Value");
// VariableBrowsePaths.Add("/7:MatrikonOpc Sim Server/7:Simulation Items/7:Bucket Brigade/7:Int1");
// VariableBrowsePaths.Add("/7:MatrikonOPC Sim Server/7:Simulation Items/7:Bucket Brigade/7:Int2");
try
{
// create the configuration.
ApplicationConfiguration configuration = Helpers.CreateClientConfiguration();
// create the endpoint description.
EndpointDescription endpointDescription = Helpers.CreateEndpointDescription();
// create the endpoint configuration (use the application configuration to provide default values).
EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(configuration);
// the default timeout for a requests sent using the channel.
endpointConfiguration.OperationTimeout = 600000;
// use the pure XML encoding on the wire.
endpointConfiguration.UseBinaryEncoding = true;
// create the endpoint.
ConfiguredEndpoint endpoint = new ConfiguredEndpoint(null, endpointDescription, endpointConfiguration);
// create the binding factory.
ServiceMessageContext messageContext = configuration.CreateMessageContext();
BindingFactory bindingFactory = BindingFactory.Create(configuration, messageContext);
// update endpoint description using the discovery endpoint.
if (endpoint.UpdateBeforeConnect)
{
endpoint.UpdateFromServer(bindingFactory);
Console.WriteLine("Updated endpoint description for url: {0}", endpointDescription.EndpointUrl);
endpointDescription = endpoint.Description;
endpointConfiguration = endpoint.Configuration;
}
X509Certificate2 clientCertificate = configuration.SecurityConfiguration.ApplicationCertificate.Find();
// set up a callback to handle certificate validation errors.
configuration.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);
// Initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
configuration,
endpointDescription,
endpointConfiguration,
clientCertificate,
messageContext);
// Wrap the channel with the session object.
// This call will fail if the server does not trust the client certificate.
Session session = new Session(channel, configuration, endpoint, null);
session.ReturnDiagnostics = DiagnosticsMasks.All;
// register keep alive callback.
// session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive);
// passing null for the user identity will create an anonymous session.
UserIdentity identity = null; // new UserIdentity("iamuser", "password");
// create the session. This actually connects to the server.
session.Open("My Session Name", identity);
//Read some history values:
string str = "";
do
{
Console.WriteLine("Select action from the menu:\n");
Console.WriteLine("\t 0 - Browse");
Console.WriteLine("\t 1 - Update");
Console.WriteLine("\t 2 - ReadRaw");
Console.WriteLine("\t 3 - ReadProcessed");
Console.WriteLine("\t 4 - ReadAtTime");
Console.WriteLine("\t 5 - ReadAttributes");
Console.WriteLine("\t 6 - DeleteAtTime");
Console.WriteLine("\t 7 - DeleteRaw");
Console.WriteLine("\n\tQ - exit\n\n");
str = Console.ReadLine();
Console.WriteLine("\n");
try
{
if (str == "0")
{
Browse(session);
}
else if (str == "1")
HistoryUpdate(session);
else if (str == "2")
HistoryReadRaw(session);
else if (str == "3")
HistoryReadProcessed(session);
else if (str == "4")
HistoryReadAtTime(session);
else if (str == "5")
HistoryReadAttributes(session);
else if (str == "6")
HistoryDeleteAtTime(session);
else if (str == "7")
HistoryDeleteRaw(session);
}
catch (Exception e)
{
Console.WriteLine("Exception occured: " + e.Message);
}
} while (str != "Q" && str != "q");
// Display some friendly info to the console and then wait for the ENTER key to be pressed.
Console.WriteLine( "Connected to {0}.\nPress ENTER to disconnect to end.", DefaultServerUrl);
Console.ReadLine();
// Close and Dispose of our session, effectively disconnecting us from the UA Server.
session.Close();
session.Dispose();
}
catch (Exception e)
{
Console.WriteLine( "Unexpected exception: {0}.\nPress ENTER to disconnect to end.", e.Message);
Console.ReadLine();
Console.WriteLine();
Console.WriteLine("========================================================================================");
Console.WriteLine();
}
}
/// <summary>
/// Connects to the UA server identfied by the CLSID.
/// </summary>
/// <param name="clsid">The CLSID.</param>
/// <returns>The UA server.</returns>
private Session Connect(Guid clsid)
{
// load the endpoint information.
ConfiguredEndpoint endpoint = m_endpoint = LoadConfiguredEndpoint(clsid);
if (endpoint == null)
{
throw new ServiceResultException(StatusCodes.BadConfigurationError);
}
// update security information.
if (endpoint.UpdateBeforeConnect)
{
endpoint.UpdateFromServer(BindingFactory.Default);
// check if halted while waiting for a response.
if (!m_running)
{
throw new ServiceResultException(StatusCodes.BadServerHalted);
}
}
// look up the client certificate.
X509Certificate2 clientCertificate = m_configuration.SecurityConfiguration.ApplicationCertificate.Find(true);
// create a message context to use with the channel.
ServiceMessageContext messageContext = m_configuration.CreateMessageContext();
// create the channel.
ITransportChannel channel = SessionChannel.Create(
m_configuration,
endpoint.Description,
endpoint.Configuration,
clientCertificate,
messageContext);
// create the session.
Session session = new Session(channel, m_configuration, endpoint, clientCertificate);
// create a session name that is useful for debugging.
string sessionName = Utils.Format("COM Client ({0})", System.Net.Dns.GetHostName());
// open the session.
Opc.Ua.UserIdentity identity = null;
if (endpoint.UserIdentity != null)
{
// need to decode password.
UserNameIdentityToken userNameToken = endpoint.UserIdentity as UserNameIdentityToken;
if (userNameToken != null)
{
UserNameIdentityToken copy = new UserNameIdentityToken();
copy.PolicyId = userNameToken.PolicyId;
copy.DecryptedPassword = new UTF8Encoding().GetString(userNameToken.Password);
copy.UserName = userNameToken.UserName;
copy.EncryptionAlgorithm = userNameToken.EncryptionAlgorithm;
identity = new Opc.Ua.UserIdentity(copy);
}
// create the identity object.
else
{
identity = new Opc.Ua.UserIdentity(endpoint.UserIdentity);
}
}
session.Open(sessionName, identity);
// return the new session.
return session;
}
/// <summary>
/// Creates a new communication session with a server by invoking the CreateSession service
/// </summary>
/// <param name="configuration">The configuration for the client application.</param>
/// <param name="endpoint">The endpoint for the server.</param>
/// <param name="updateBeforeConnect">If set to <c>true</c> the discovery endpoint is used to update the endpoint description before connecting.</param>
/// <param name="checkDomain">If set to <c>true</c> then the domain in the certificate must match the endpoint used.</param>
/// <param name="sessionName">The name to assign to the session.</param>
/// <param name="sessionTimeout">The timeout period for the session.</param>
/// <param name="identity">The user identity to associate with the session.</param>
/// <param name="preferredLocales">The preferred locales.</param>
/// <returns>The new session object.</returns>
public static Session Create(
ApplicationConfiguration configuration,
ConfiguredEndpoint endpoint,
bool updateBeforeConnect,
bool checkDomain,
string sessionName,
uint sessionTimeout,
IUserIdentity identity,
IList<string> preferredLocales)
{
endpoint.UpdateBeforeConnect = updateBeforeConnect;
EndpointDescription endpointDescription = endpoint.Description;
// create the endpoint configuration (use the application configuration to provide default values).
EndpointConfiguration endpointConfiguration = endpoint.Configuration;
if (endpointConfiguration == null)
{
endpoint.Configuration = endpointConfiguration = EndpointConfiguration.Create(configuration);
}
// create message context.
ServiceMessageContext messageContext = configuration.CreateMessageContext();
// update endpoint description using the discovery endpoint.
if (endpoint.UpdateBeforeConnect)
{
BindingFactory bindingFactory = BindingFactory.Create(configuration, messageContext);
endpoint.UpdateFromServer(bindingFactory);
endpointDescription = endpoint.Description;
endpointConfiguration = endpoint.Configuration;
}
// checks the domains in the certificate.
if (checkDomain && endpoint.Description.ServerCertificate != null && endpoint.Description.ServerCertificate.Length > 0)
{
CheckCertificateDomain(endpoint);
}
X509Certificate2 clientCertificate = null;
//X509Certificate2Collection clientCertificateChain = null;
if (endpointDescription.SecurityPolicyUri != SecurityPolicies.None)
{
if (configuration.SecurityConfiguration.ApplicationCertificate == null)
{
throw ServiceResultException.Create( StatusCodes.BadConfigurationError, "ApplicationCertificate must be specified." );
}
clientCertificate = configuration.SecurityConfiguration.ApplicationCertificate.Find( true );
if( clientCertificate == null )
{
throw ServiceResultException.Create( StatusCodes.BadConfigurationError, "ApplicationCertificate cannot be found." );
}
//load certificate chain
//clientCertificateChain = new X509Certificate2Collection(clientCertificate);
//List<CertificateIdentifier> issuers = new List<CertificateIdentifier>();
//configuration.CertificateValidator.GetIssuers(clientCertificate, issuers);
//for (int i = 0; i < issuers.Count; i++)
//{
// clientCertificateChain.Add(issuers[i].Certificate);
//}
}
// initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
configuration,
endpointDescription,
endpointConfiguration,
//clientCertificateChain,
clientCertificate,
messageContext);
// create the session object.
Session session = new Session(channel, configuration, endpoint, null);
// create the session.
try
{
session.Open( sessionName, sessionTimeout, identity, preferredLocales, checkDomain );
}
catch
{
session.Dispose();
throw;
}
return session;
}
/// <summary>
/// Creates a new session.
/// </summary>
private Session CreateSession(Guid clsid)
{
// lookup the cached configuration information.
ConfiguredEndpoint endpoint = null;
bool previouslyConnected = true;
if (!m_verifiedEndpoints.TryGetValue(clsid, out endpoint))
{
endpoint = LoadConfiguredEndpoint(clsid);
if (endpoint != null)
{
Utils.Trace("Loaded endpoint with URL: {0}", endpoint.EndpointUrl);
previouslyConnected = false;
}
}
if (endpoint == null)
{
endpoint = m_endpointCache.Create(DefaultServerUrl);
}
// Initialize the client configuration.
// Fetch the current configuration information by connecting to the server's discovery endpoint.
// This method assumes that the discovery endpoint can be constructed by appending "/discovery" to the URL.
if (endpoint.UpdateBeforeConnect && !previouslyConnected)
{
endpoint.UpdateFromServer(BindingFactory.Default);
Utils.Trace("Updated endpoint from server: {0}", endpoint.EndpointUrl);
}
// Need to specify that the server is trusted by the client application.
if (!previouslyConnected)
{
m_configuration.SecurityConfiguration.AddTrustedPeer(endpoint.Description.ServerCertificate);
}
// Set the session keep alive to 600 seconds.
m_configuration.ClientConfiguration.DefaultSessionTimeout = 600000;
ServiceMessageContext messageContext = m_configuration.CreateMessageContext();
// Initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
m_configuration,
endpoint.Description,
endpoint.Configuration,
m_configuration.SecurityConfiguration.ApplicationCertificate.Find(true),
messageContext);
// Wrap the channel with the session object.
Session session = new Session(channel, m_configuration, endpoint, null);
session.ReturnDiagnostics = DiagnosticsMasks.SymbolicId;
// The user login credentials must be provided when opening a session.
IUserIdentity identity = null;
if (endpoint.UserIdentity != null)
{
identity = new Opc.Ua.UserIdentity(endpoint.UserIdentity);
}
// Create the session. This actually connects to the server.
session.Open("COM Client Session", identity);
// need to fetch the references in order use the node cache.
session.FetchTypeTree(ReferenceTypeIds.References);
// save the updated information.
if (!previouslyConnected)
{
try
{
SaveConfiguredEndpoint(clsid, endpoint);
}
catch (Exception e)
{
Utils.Trace(e, "Could not save SaveConfiguredEndpoint in registry.");
}
m_verifiedEndpoints.Add(clsid, endpoint);
}
return session;
}
/// <summary>
/// Connects to the UA server identfied by the CLSID.
/// </summary>
/// <param name="clsid">The CLSID.</param>
/// <returns>The UA server.</returns>
private async Task<Session> Connect(Guid clsid)
{
// load the endpoint information.
ConfiguredEndpoint endpoint = m_endpoint = LoadConfiguredEndpoint(clsid);
if (endpoint == null)
{
throw new ServiceResultException(StatusCodes.BadConfigurationError);
}
// update security information.
if (endpoint.UpdateBeforeConnect)
{
endpoint.UpdateFromServer();
// check if halted while waiting for a response.
if (!m_running)
{
throw new ServiceResultException(StatusCodes.BadServerHalted);
}
}
// look up the client certificate.
X509Certificate2 clientCertificate = await m_configuration.SecurityConfiguration.ApplicationCertificate.Find(true);
// create a message context to use with the channel.
ServiceMessageContext messageContext = m_configuration.CreateMessageContext();
// create the channel.
ITransportChannel channel = SessionChannel.Create(
m_configuration,
endpoint.Description,
endpoint.Configuration,
clientCertificate,
messageContext);
// create the session.
Session session = new Session(channel, m_configuration, endpoint, clientCertificate);
// create a session name that is useful for debugging.
string sessionName = Utils.Format("COM Client (Host={0}, CLSID={1})", System.Net.Dns.GetHostName(), clsid);
// open the session.
session.Open(sessionName, null);
// return the new session.
return session;
}
/// <summary>
/// Creates a session.
/// </summary>
private Session CreateSession(
ApplicationConfiguration configuration,
BindingFactory bindingFactory,
ConfiguredEndpoint endpoint,
IUserIdentity identity)
{
Report("Creating new Session with URL = {0}", endpoint.EndpointUrl);
// Initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
configuration,
endpoint.Description,
endpoint.Configuration,
configuration.SecurityConfiguration.ApplicationCertificate.Find(true),
configuration.CreateMessageContext());
// Wrap the channel with the session object.
Session session = new Session(channel, configuration, endpoint, null);
session.ReturnDiagnostics = DiagnosticsMasks.All;
// register keep alive callback.
session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive);
// create the user identity.
if (identity == null)
{
if (endpoint.Description.UserIdentityTokens.Count > 0)
{
identity = CreateUserIdentity(endpoint.Description.UserIdentityTokens[0]);
}
}
// Create the session. This actually connects to the server.
session.Open(Guid.NewGuid().ToString(), identity);
Report("Successfully created new Session.");
// return the session.
return session;
}
/// <summary>
/// Creates a new communication session with a server by invoking the CreateSession service
/// </summary>
/// <param name="configuration">The configuration for the client application.</param>
/// <param name="endpoint">The endpoint for the server.</param>
/// <param name="updateBeforeConnect">If set to <c>true</c> the discovery endpoint is used to update the endpoint description before connecting.</param>
/// <param name="checkDomain">If set to <c>true</c> then the domain in the certificate must match the endpoint used.</param>
/// <param name="sessionName">The name to assign to the session.</param>
/// <param name="sessionTimeout">The timeout period for the session.</param>
/// <param name="identity">The user identity to associate with the session.</param>
/// <param name="preferredLocales">The preferred locales.</param>
/// <returns>The new session object.</returns>
public static async Task<Session> Create(
ApplicationConfiguration configuration,
ConfiguredEndpoint endpoint,
bool updateBeforeConnect,
bool checkDomain,
string sessionName,
uint sessionTimeout,
IUserIdentity identity,
IList<string> preferredLocales)
{
endpoint.UpdateBeforeConnect = updateBeforeConnect;
EndpointDescription endpointDescription = endpoint.Description;
// create the endpoint configuration (use the application configuration to provide default values).
EndpointConfiguration endpointConfiguration = endpoint.Configuration;
if (endpointConfiguration == null)
{
endpoint.Configuration = endpointConfiguration = EndpointConfiguration.Create(configuration);
}
// create message context.
ServiceMessageContext messageContext = configuration.CreateMessageContext();
// update endpoint description using the discovery endpoint.
if (endpoint.UpdateBeforeConnect)
{
BindingFactory bindingFactory = BindingFactory.Create(configuration, messageContext);
endpoint.UpdateFromServer(bindingFactory);
endpointDescription = endpoint.Description;
endpointConfiguration = endpoint.Configuration;
}
// checks the domains in the certificate.
if (checkDomain && endpoint.Description.ServerCertificate != null && endpoint.Description.ServerCertificate.Length > 0)
{
bool domainFound = false;
X509Certificate2 serverCertificate = new X509Certificate2(endpoint.Description.ServerCertificate);
// check the certificate domains.
IList<string> domains = Utils.GetDomainsFromCertficate(serverCertificate);
if (domains != null)
{
string hostname = endpoint.EndpointUrl.DnsSafeHost;
if (hostname == "localhost" || hostname == "127.0.0.1")
{
hostname = Utils.GetHostName();
}
for (int ii = 0; ii < domains.Count; ii++)
{
if (String.Compare(hostname, domains[ii], StringComparison.CurrentCultureIgnoreCase) == 0)
{
domainFound = true;
break;
}
}
}
if (!domainFound)
{
throw new ServiceResultException(StatusCodes.BadCertificateHostNameInvalid);
}
}
X509Certificate2 clientCertificate = null;
if (endpointDescription.SecurityPolicyUri != SecurityPolicies.None)
{
if (configuration.SecurityConfiguration.ApplicationCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate must be specified.");
}
clientCertificate = await configuration.SecurityConfiguration.ApplicationCertificate.Find(true);
if (clientCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate cannot be found.");
}
}
// initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
configuration,
endpointDescription,
endpointConfiguration,
//clientCertificateChain,
clientCertificate,
messageContext);
// create the session object.
Session session = new Session(channel, configuration, endpoint, null);
// create the session.
try
{
session.Open(sessionName, sessionTimeout, identity, preferredLocales);
}
catch
{
session.Dispose();
throw;
}
return session;
}
/// <summary>
/// Creates a new communication session with a server by invoking the CreateSession service
/// </summary>
/// <param name="configuration">The configuration for the client application.</param>
/// <param name="endpoint">The endpoint for the server.</param>
/// <param name="updateBeforeConnect">If set to <c>true</c> the discovery endpoint is used to update the endpoint description before connecting.</param>
/// <param name="checkDomain">If set to <c>true</c> then the domain in the certificate must match the endpoint used.</param>
/// <param name="sessionName">The name to assign to the session.</param>
/// <param name="sessionTimeout">The timeout period for the session.</param>
/// <param name="identity">The user identity to associate with the session.</param>
/// <param name="preferredLocales">The preferred locales.</param>
/// <returns>The new session object.</returns>
public static async Task<Session> Create(
ApplicationConfiguration configuration,
ConfiguredEndpoint endpoint,
bool updateBeforeConnect,
bool checkDomain,
string sessionName,
uint sessionTimeout,
IUserIdentity identity,
IList<string> preferredLocales)
{
endpoint.UpdateBeforeConnect = updateBeforeConnect;
EndpointDescription endpointDescription = endpoint.Description;
// create the endpoint configuration (use the application configuration to provide default values).
EndpointConfiguration endpointConfiguration = endpoint.Configuration;
if (endpointConfiguration == null)
{
endpoint.Configuration = endpointConfiguration = EndpointConfiguration.Create(configuration);
}
// create message context.
ServiceMessageContext messageContext = configuration.CreateMessageContext();
// update endpoint description using the discovery endpoint.
if (endpoint.UpdateBeforeConnect)
{
endpoint.UpdateFromServer();
endpointDescription = endpoint.Description;
endpointConfiguration = endpoint.Configuration;
}
// checks the domains in the certificate.
if (checkDomain && endpoint.Description.ServerCertificate != null && endpoint.Description.ServerCertificate.Length > 0)
{
CheckCertificateDomain(endpoint);
}
X509Certificate2 clientCertificate = null;
if (endpointDescription.SecurityPolicyUri != SecurityPolicies.None)
{
if (configuration.SecurityConfiguration.ApplicationCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate must be specified.");
}
clientCertificate = await configuration.SecurityConfiguration.ApplicationCertificate.Find(true);
if (clientCertificate == null)
{
throw ServiceResultException.Create(StatusCodes.BadConfigurationError, "ApplicationCertificate cannot be found.");
}
}
// initialize the channel which will be created with the server.
ITransportChannel channel = SessionChannel.Create(
configuration,
endpointDescription,
endpointConfiguration,
clientCertificate,
messageContext);
// create the session object.
Session session = new Session(channel, configuration, endpoint, null);
// create the session.
try
{
session.Open(sessionName, sessionTimeout, identity, preferredLocales, checkDomain);
}
catch (Exception e)
{
session.Dispose();
throw e;
}
return session;
}
