/// <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 isnĀ“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); } }