/// <summary>
/// Reestablish connection to server.
/// </summary>
/// <remarks>
/// This method checks if the session is valid. If not, a new logon in perfomed automatically.
/// Handle the NewLogonNeeded event to provide credentials.
/// </remarks>
/// <returns>True, if reconnecting was successfull, otherwis false </returns>
internal bool InternalReconnect()
{
// When the session isn´t valid, the server process must have been restarted
if (!RemoteDispatcher.ExistSession(_sessionID))
{
Hashtable credentials = null;
bool performNewLogon = true;
// If cached auto login credentials are present
if (_autoLoginOnExpiredSession)
{
credentials = _autoLoginCredentials;
}
else
{
var newLogonNeededEventArgs = new NewLogonNeededEventArgs();
if (OnNewLogonNeeded(newLogonNeededEventArgs))
{
performNewLogon = !newLogonNeededEventArgs.Cancel;
credentials = newLogonNeededEventArgs.Credentials;
}
else
{
performNewLogon = false;
}
}
if (performNewLogon)
{
RemoteDispatcher.Logon(_sessionID, credentials);
ReconnectRemoteEventsAsync();
RemoteDispatcher.ReceiveClientHeartbeat(_sessionID);
return(true);
}
}
else
{
RemoteDispatcher.ReceiveClientHeartbeat(_sessionID);
return(true);
}
return(false);
}
/// <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");
}
}
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.Count == 0)
{
credentials = null;
}
try
{
RemoteDispatcher.Logon(_sessionID, credentials);
_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();
}
throw ex.PreserveStackTrace();
}
StartKeepSessionAliveTimer();
lock (_connections)
{
_connections.Add(this);
}
}
