/// <summary>
/// Releases unmanaged and — optionally — managed resources.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (!disposing)
{
return;
}
if (!_isDisposed)
{
_isDisposed = true;
if (_pollingTimer != null)
{
_pollingTimer.Dispose();
_pollingTimer = null;
}
_pollingEnabled = false;
if (_keepSessionAliveTimer != null)
{
_keepSessionAliveTimer.Dispose();
_keepSessionAliveTimer = null;
}
try
{
foreach (var zyanProxy in AliveProxies)
{
zyanProxy.RemoveAllRemoteEventHandlers();
}
RemoteDispatcher.Logoff(_sessionID);
}
catch (RemotingException)
{ }
catch (SocketException)
{ }
catch (WebException)
{ }
catch (MessageException)
{ }
catch (Exception ex)
{
Trace.WriteLine("Unexpected exception of type {0} caught while disposing ZyanConnection: {1}", ex.GetType(), ex.Message);
}
finally
{
lock (_connections)
{
_connections.Remove(this);
}
}
if (_remotingChannel != null)
{
// unsubscribe from connection notifications
var connectionNotification = _remotingChannel as IConnectionNotification;
if (connectionNotification != null)
{
connectionNotification.ConnectionEstablished -= Channel_ConnectionEstablished;
}
// unregister remoting channel
var registeredChannel = ChannelServices.GetChannel(_remotingChannel.ChannelName);
if (registeredChannel != null && registeredChannel == _remotingChannel)
{
ChannelServices.UnregisterChannel(_remotingChannel);
}
// dispose remoting channel, if it's disposable
var disposableChannel = _remotingChannel as IDisposable;
if (disposableChannel != null)
{
disposableChannel.Dispose();
}
_remotingChannel = null;
}
_remoteDispatcher = null;
_serverUrl = string.Empty;
_sessionID = Guid.Empty;
_protocolSetup = null;
_serializationHandling = null;
_componentHostName = string.Empty;
if (_registeredComponents != null)
{
_registeredComponents.Clear();
_registeredComponents = null;
}
if (_callInterceptors != null)
{
_callInterceptors.Clear();
_callInterceptors = null;
}
if (_autoLoginCredentials != null)
{
_autoLoginCredentials = null;
}
GC.WaitForPendingFinalizers();
}
}
/// <summary>
/// Creates a new instance of the ZyanConnection class.
/// </summary>
/// <param name="serverUrl">URL of remote server (e.G. "tcp://server1:46123/myapp").</param>
/// <param name="protocolSetup">Protocol and communication settings.</param>
/// <param name="credentials">Login credentials.</param>
/// <param name="autoLoginOnExpiredSession">Specifies whether the proxy should relogin automatically when the session expired.</param>
/// <param name="keepSessionAlive">Specifies whether the session should be automaticly kept alive.</param>
public ZyanConnection(string serverUrl, IClientProtocolSetup protocolSetup, AuthCredentials credentials, bool autoLoginOnExpiredSession, bool keepSessionAlive)
{
if (string.IsNullOrEmpty(serverUrl))
{
throw new ArgumentException(LanguageResource.ArgumentException_ServerUrlMissing, "serverUrl");
}
if (protocolSetup == null)
{
// try to select the protocol automatically
protocolSetup = ClientProtocolSetup.GetClientProtocol(serverUrl);
if (protocolSetup == null)
{
throw new ArgumentNullException("protocolSetup");
}
}
if (!protocolSetup.IsUrlValid(serverUrl))
{
throw new ArgumentException(LanguageResource.ArgumentException_ServerUrlIsInvalid, "serverUrl");
}
_proxies = new List <WeakReference>();
_protocolSetup = protocolSetup;
_sessionID = Guid.NewGuid();
_serverUrl = serverUrl;
_autoLoginOnExpiredSession = autoLoginOnExpiredSession;
_keepSessionAlive = keepSessionAlive;
if (_autoLoginOnExpiredSession)
{
_autoLoginCredentials = credentials;
}
_serializationHandling = new SerializationHandlerRepository();
CallInterceptionEnabled = false;
_callInterceptors = new CallInterceptorCollection();
RegisterStandardSerializationHandlers();
string[] addressParts = _serverUrl.Split('/');
_componentHostName = addressParts[addressParts.Length - 1];
_remotingChannel = _protocolSetup.CreateChannel();
if (!ZyanSettings.DisableUrlRandomization)
{
_remotingChannel = ChannelWrapper.WrapChannel(_remotingChannel, _protocolSetup.ChannelName);
}
if (_remotingChannel != null)
{
var registeredChannel = ChannelServices.GetChannel(_remotingChannel.ChannelName);
if (registeredChannel == null)
{
ChannelServices.RegisterChannel(_remotingChannel, false);
}
else
{
_remotingChannel = registeredChannel;
}
}
else
{
throw new ApplicationException(LanguageResource.ApplicationException_NoChannelCreated);
}
var connectionNotification = _remotingChannel as IConnectionNotification;
if (connectionNotification != null)
{
connectionNotification.ConnectionEstablished += Channel_ConnectionEstablished;
}
string channelName = _remotingChannel.ChannelName;
if (credentials == null)
{
credentials = new AuthCredentials();
}
try
{
credentials.Authenticate(_sessionID, RemoteDispatcher);
_registeredComponents = new List <ComponentInfo>(RemoteDispatcher.GetRegisteredComponents());
_sessionAgeLimit = RemoteDispatcher.SessionAgeLimit;
}
catch (Exception ex)
{
// unregister remoting channel
var registeredChannel = ChannelServices.GetChannel(channelName);
if (registeredChannel != null)
{
ChannelServices.UnregisterChannel(registeredChannel);
}
// dispose channel if it's disposable
var disposableChannel = registeredChannel as IDisposable;
if (disposableChannel != null)
{
disposableChannel.Dispose();
}
_remotingChannel = null;
_remoteDispatcher = null;
throw ex.PreserveStackTrace();
}
var reconnectEvents = new Action(ReconnectRemoteEventsCore);
var debounceInterval = ZyanSettings.ReconnectRemoteEventsDebounceInterval.TotalMilliseconds;
ReconnectRemoteEvents = reconnectEvents.Debounce((int)debounceInterval);
StartKeepSessionAliveTimer();
lock (_connections)
{
_connections.Add(this);
}
}
/// <summary>
/// Release managed resources.
/// </summary>
public void Dispose()
{
if (!_isDisposed)
{
_isDisposed = true;
if (_pollingTimer != null)
{
_pollingTimer.Dispose();
_pollingTimer = null;
}
_pollingEnabled = false;
if (_keepSessionAliveTimer != null)
{
_keepSessionAliveTimer.Dispose();
_keepSessionAliveTimer = null;
}
try
{
if (_proxies != null)
{
foreach (var proxyReference in _proxies)
{
if (proxyReference.IsAlive)
{
var proxy = proxyReference.Target as ZyanProxy;
proxy.RemoveAllRemoteEventHandlers();
}
}
}
//RemoteDispatcher.Logoff(_sessionID);
_transportAdapter.SendRequest(new RequestMessage()
{
RequestType = RequestType.SystemOperation,
MethodName = "Logoff",
Address = _serverUrl,
ParameterValues = new object[] { _sessionID }
});
}
//TODO: Get rid of .NET Remoting dependency.
//catch (RemotingException)
//{ }
catch (SocketException)
{ }
catch (WebException)
{ }
catch (MessageException)
{ }
catch (Exception ex)
{
Trace.WriteLine("Unexpected exception of type {0} caught while disposing ZyanConnection: {1}", ex.GetType(), ex.Message);
}
finally
{
_connections.Remove(this);
}
if (_transportAdapter != null)
{
// unregister remoting channel
var registeredChannel = ClientTransportAdapterManager.Instance.GetTransportAdapter(_transportAdapter.UniqueName);
if (registeredChannel != null && registeredChannel == _transportAdapter)
{
ClientTransportAdapterManager.Instance.Unregister(_transportAdapter);
}
// dispose remoting channel, if it's disposable
var disposableChannel = _transportAdapter as IDisposable;
if (disposableChannel != null)
{
disposableChannel.Dispose();
}
_transportAdapter = null;
}
_serverUrl = string.Empty;
_sessionID = Guid.Empty;
_protocolSetup = null;
_serializationHandling = null;
_componentHostName = string.Empty;
if (_registeredComponents != null)
{
_registeredComponents.Clear();
_registeredComponents = null;
}
if (_callInterceptors != null)
{
_callInterceptors.Clear();
_callInterceptors = null;
}
if (_autoLoginCredentials != null)
{
_autoLoginCredentials.Clear();
_autoLoginCredentials = null;
}
GC.WaitForPendingFinalizers();
}
}
/// <summary>
/// Creates CallInterceptorHelper instance
/// </summary>
/// <param name="interceptors">Collection of call interceptors to add to</param>
public CallInterceptorHelper(CallInterceptorCollection interceptors)
{
Interceptors = interceptors;
}
/// <summary>
/// Creates a new instance of the ZyanConnection class.
/// </summary>
/// <param name="serverUrl">URL of remote server (e.G. "tcp://server1:46123/myapp").</param>
/// <param name="protocolSetup">Protocol and communication settings.</param>
/// <param name="credentials">Login credentials.</param>
/// <param name="autoLoginOnExpiredSession">Specifies whether the proxy should relogin automatically when the session expired.</param>
/// <param name="keepSessionAlive">Specifies whether the session should be automaticly kept alive.</param>
public ZyanConnection(string serverUrl, IClientProtocolSetup protocolSetup, Hashtable credentials, bool autoLoginOnExpiredSession, bool keepSessionAlive)
{
if (string.IsNullOrEmpty(serverUrl))
{
throw new ArgumentException(LanguageResource.ArgumentException_ServerUrlMissing, "serverUrl");
}
if (protocolSetup == null)
{
// try to select the protocol automatically
protocolSetup = ClientProtocolSetup.GetClientProtocol(serverUrl);
if (protocolSetup == null)
{
throw new ArgumentNullException("protocolSetup");
}
}
_proxies = new List <WeakReference>();
_protocolSetup = protocolSetup;
_sessionID = Guid.NewGuid();
_serverUrl = serverUrl;
_autoLoginOnExpiredSession = autoLoginOnExpiredSession;
_keepSessionAlive = keepSessionAlive;
if (_autoLoginOnExpiredSession)
{
_autoLoginCredentials = credentials;
}
_serializationHandling = new SerializationHandlerRepository();
CallInterceptionEnabled = false;
_callInterceptors = new CallInterceptorCollection();
RegisterStandardSerializationHandlers();
string[] addressParts = _serverUrl.Split('/');
_componentHostName = addressParts[addressParts.Length - 1];
_transportAdapter = _protocolSetup.CreateTransportAdapter();
//TODO: Implement URL randomization without .NET Remoting dependency
//if (AllowUrlRandomization)
//{
// _transportChannel = ChannelWrapper.WrapChannel(_transportChannel);
//}
if (_transportAdapter != null)
{
var registeredChannel = ClientTransportAdapterManager.Instance.GetTransportAdapter(_transportAdapter.UniqueName);
if (registeredChannel == null)
{
ClientTransportAdapterManager.Instance.Register(_transportAdapter);
}
}
else
{
throw new ApplicationException(LanguageResource.ApplicationException_NoChannelCreated);
}
string channelName = _transportAdapter.UniqueName;
if (credentials != null && credentials.Count == 0)
{
credentials = null;
}
//try
//{
//TODO: Generate logon request message and send it through transport channel
//RemoteDispatcher.Logon(_sessionID, credentials);
_sessionAgeLimit = SendLogonMessage(_sessionID, credentials);
//TODO: Request registered components through transport channel
//_registeredComponents = new List<ComponentInfo>(RemoteDispatcher.GetRegisteredComponents());
_registeredComponents = SendGetRegisteredComponentsMessage();
//TODO: Extract session age limit from logon response message.
//_sessionAgeLimit = RemoteDispatcher.SessionAgeLimit;
//}
//catch (Exception ex)
//{
// // unregister remoting channel
// var registeredChannel = ClientTransportAdapterManager.Instance.GetTransportAdapter(channelName);
// if (registeredChannel != null)
// ClientTransportAdapterManager.Instance.Unregister(registeredChannel);
// // dispose channel if it's disposable
// var disposableChannel = registeredChannel as IDisposable;
// if (disposableChannel != null)
// disposableChannel.Dispose();
// throw ex.PreserveStackTrace();
//}
StartKeepSessionAliveTimer();
_connections.Add(this);
}