public virtual bool OnDisconnect()
{
ConnectionLost?.Invoke();
CloseSocket();
return(true);
}
public void Receive(int bufferSize = 128)
{
if (Stream == null || !_socket.Connected)
{
return;
}
Task.Run( // Initiate the receiver thread
() => {
bool error = false;
do
{
if (!TryReceiveOnce(out Packet packet))
{
error = true;
ConnectionLost?.Invoke(this, null);
}
if (packet != null)
{
packet.ParseFailed += PacketParseFailed;
}
DataReceived?.Invoke(this, packet);
} while (_socket.Connected && !error);
}
);
}
public AccDataConnection(string host, int port, string password, TimeSpan?updateInterval)
{
_host = host;
_port = port;
_password = password;
_updateInterval = updateInterval.GetValueOrDefault(_defaultUpdateInterval);
_client = new UdpClient();
_cancellationTokenSource = new CancellationTokenSource();
_cancellationToken = _cancellationTokenSource.Token;
_noMessagesReceivedTimer = new Timer();
_noMessagesReceivedTimer.Elapsed += (_, __) => {
if (_registered && !_sendingPing)
{
SendPing();
_sendingPing = true;
return;
}
if (_registered)
{
ConnectionLost?.Invoke(null, new ConnectionLostEventArgs());
}
_registered = false;
Connected = false;
SendRegistrationRequest();
};
}
public ServiceClient(IClientLogic logic, IPAddress hostIP, int port, int interfaceId, long ticket)
{
this.logic = logic;
client = new DynamicClient(hostIP, port);
tree = new ProtocolTree();
root = new DummyHandler <DummyProtocol>();
auth = new LeafProtocolHandler <AuthenticationProtocol>();
tree.Register(root);
tree.Register(auth);
tree.Entry(root);
tree.ConnectToLeaf(root, auth);
tree.Connect(root, logic.ProtocolTree);
app = new ApplicationConnectionManager(client, tree, 3000, 6000);
auth.NewData += data =>
{
switch (data.statusCode)
{
case AuthenticationProtocol.StatusCode.Request:
Logger.Log("receiving auth request", "ServiceClient");
auth.Send(new AuthenticationProtocol
{
interfaceId = interfaceId,
ticket = ticket,
resumeToken = ResumeToken,
statusCode = AuthenticationProtocol.StatusCode.Ack
});
break;
case AuthenticationProtocol.StatusCode.Accept:
Logger.Log("auth accepted by the host", "ServiceClient");
ResumeToken = data.resumeToken;
ConnectionAccepted?.Invoke();
break;
case AuthenticationProtocol.StatusCode.Reject:
Logger.Log($"auth rejected by the host, {data.reason}", "ServiceClient", Logger.LogType.WARNING);
rejected = true;
client.CloseConnection();
app.Dispose();
ConnectionRejected?.Invoke();
break;
default:
Logger.Log("invalid auth msg from host", "ServiceClient", Logger.LogType.WARNING);
break;
}
};
app.ConnectionLost += () =>
{
if (!rejected)
{
ConnectionLost?.Invoke();
}
};
}
public void Run()
{
Task.Run(() =>
{
while (!cancellationToken.IsCancellationRequested)
{
double noResponseTime = (DateTime.UtcNow - lastHeartbeatTimeProvider()).TotalSeconds;
if (noResponseTime > ConnectionTimeoutInSeconds)
{
ConnectionLost?.Invoke();
break;
}
else if (noResponseTime > NeedRefreshTimeoutInSeconds)
{
if ((DateTime.UtcNow - lastRefreshRequestTime).TotalSeconds >= 1.0)
{
lastRefreshRequestTime = DateTime.UtcNow;
DataRefreshNeeded?.Invoke();
}
}
Thread.Sleep(checkDelay);
}
});
}
/// <summary>
/// Receives data from network stream and processes it.
/// </summary>
private void ReceiveData()
{
try
{
NetworkStream stream = connection.GetStream();
byte[] buffer = new byte[256];
for (int bytesRead; (bytesRead = stream.Read(buffer, 0, buffer.Length)) != 0;)
{
string data = Encoding.UTF8.GetString(buffer, 0, bytesRead);
DataProcessor.Process(data);
}
}
catch (IOException)
{
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
catch (ObjectDisposedException)
{
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
catch (InvalidOperationException)
{
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
}
/// <summary>
/// Начать обработку входящих сообщений клиента.
/// </summary>
public void Process()
{
try
{
_stream = _client.GetStream();
var initialMessage = (Message)_formatter.Deserialize(_stream);
UserName = initialMessage.Text;
var eventArgs = new MessageEventArgs
{
Message = initialMessage
};
NewUser?.Invoke(this, eventArgs);
while (true)
{
var message = (Message)_formatter.Deserialize(_stream);
eventArgs = new MessageEventArgs
{
Message = message
};
NewMessage?.Invoke(this, eventArgs);
}
}
catch (Exception e)
{
var eventArgs = new ErrorEventArgs(e);
ConnectionLost?.Invoke(this, eventArgs);
}
finally
{
Dispose();
}
}
protected virtual void OnDisconnect(bool expected, bool forceEventFire = false)
{
bool wasConnected = State == ConnectionState.Connected;
_state = ConnectionState.Disconnected;
// else: ApplyReconnectBehavior will set it to Connecting
// if state wasn't already "Disconnected", fire event
if (wasConnected || forceEventFire || AlwaysFireConnectionFailed)
{
ConnectionLost?.Invoke(this, new ConnectionLostArgs(
expected ? ReconnectBehavior.Ignore : ReconnectBehavior, null));
}
if (!expected)
{
Cleanup(); // enforce a proper disconnect
ApplyReconnectBehavior();
}
else
{
// make sure pending reconnects are skipped
_abortReconnect = true;
}
}
private void SocketClosed()
{
log.Write(LogVerbosity.Info, "Socket closed");
Closed?.Invoke();
authenticated = false;
var shouldReconnect = false;
if (!reconnecting)
{
lock (registrationLock)
if (registrations.Any())
{
shouldReconnect = true;
}
}
if (!shouldReconnect)
{
return;
}
reconnecting = true;
ConnectionLost?.Invoke();
Task.Run(() => TryReconnect());
}
public virtual void EventDisconnect(object objResponse)
{
ConnectionLost?.Invoke();
ErrorMessage = new Exception(objResponse.ToString());
Debug.WriteLine("EventDisconnect == " + objResponse);
}
void INotificationHandler.HandleResponse(IQueryClient queryClient, string responseText)
{
CommandParameterGroupList parameterGroupList = CommandParameterGroupList.Parse(responseText);
int?reasonId = parameterGroupList.GetParameterValue <int?>("reasonid") ?? (int)ClientLeftReason.Disconnect;
switch ((ClientLeftReason)reasonId.Value)
{
case ClientLeftReason.Kicked:
Kicked?.Invoke(queryClient, new ClientKickEventArgs(parameterGroupList));
break;
case ClientLeftReason.Banned:
Banned?.Invoke(queryClient, new ClientBanEventArgs(parameterGroupList));
break;
case ClientLeftReason.ConnectionLost:
ConnectionLost?.Invoke(queryClient, new ClientConnectionLostEventArgs(parameterGroupList));
break;
case ClientLeftReason.Disconnect:
Disconnected?.Invoke(queryClient, new ClientDisconnectEventArgs(parameterGroupList));
break;
}
}
// Keep server connection alive by pinging
private async void KeepAlive()
{
while (true)
{
await Task.Delay(PingDelay).ConfigureAwait(false);
bool isAlive = Socket.Ping(); // Try to ping the server
if (isAlive)
{
continue; // Client responded, continue pinger
}
// ---- Socket is NOT alive: ---- //
ConnectionLost?.Invoke(EndPoint);
// Client does not respond, try reconnecting, or disconnect & exit
if (AutoReconnect)
{
await Reconnect().ConfigureAwait(false); // Wait for reconnect
}
else
{
Disconnect(); // Stop and exit
return;
}
}
}
public CommunicationManager()
{
/*if (Instance == null)
* Instance = this;
* else
* throw new Exception();*/
connection = new HubConnectionBuilder()
.WithUrl(SERVER_URL + "/gamehub")
.Build();
connection.Closed += async(error) =>
{
connected = false;
if (ConnectionLost != null)
{
ConnectionLost.Invoke();
}
Logger.Log("CONNECTION LOST");
await Task.Delay(new Random().Next(0, 5) * 1000);
await connection.StartAsync();
};
connection.Reconnected += async(connectionId) =>
{
connected = true;
Logger.Log("RECONNECTED");
};
}
/// <summary>
/// New socket connection
/// </summary>
/// <param name="client">The socket client</param>
/// <param name="socket">The socket</param>
public SocketConnection(SocketClient client, IWebsocket socket)
{
log = client.log;
socketClient = client;
pendingRequests = new List <PendingRequest>();
handlers = new List <SocketSubscription>();
Socket = socket;
Socket.Timeout = client.SocketNoDataTimeout;
Socket.OnMessage += ProcessMessage;
Socket.OnClose += () =>
{
if (lostTriggered)
{
return;
}
DisconnectTime = DateTime.UtcNow;
lostTriggered = true;
if (ShouldReconnect)
{
ConnectionLost?.Invoke();
}
};
Socket.OnClose += SocketOnClose;
Socket.OnOpen += () =>
{
PausedActivity = false;
Connected = true;
};
}
private void CloseAndRaise()
{
CloseConnection();
Log("invoking connection lost");
ConnectionLost?.Invoke();
Log("invoking connection lost, done");
}
internal void OnConnectionLost()
{
if (isDisposed)
{
return;
}
ConnectionLost?.Invoke();
}
protected virtual void OnConnectionLost()
{
// DEBUG: Log connection lost.
Log.Debug($"Connection to ('{_address}:{_port}') was lost.");
ConnectionState = ClientConnectionState.Disconnected;
ConnectionLost?.Invoke(this, new EventArgs());
}
private void Handler_HasCome(object sender, Message msg)
{
_toServiceMessenger = Utils.GetAnswerMessenger(msg);
switch ((ServiceOperation)msg.What)
{
case ServiceOperation.GetClientSettings:
_callbacks.Dequeue(ServiceOperation.GetClientSettings, Utils.GetData <ConnectionCredentials>(msg));
break;
case ServiceOperation.GetIsConnected:
_callbacks.Dequeue(ServiceOperation.GetIsConnected, Utils.GetData <ManagerConnectionState>(msg));
break;
case ServiceOperation.GetScenarios:
_callbacks.Dequeue(ServiceOperation.GetScenarios, Utils.GetData <ScenarioInfo[]>(msg));
break;
case ServiceOperation.GetNotifications:
_callbacks.Dequeue(ServiceOperation.GetNotifications, Utils.GetData <LazuriteNotification[]>(msg));
break;
case ServiceOperation.ConnectionLost:
ConnectionLost?.Invoke();
break;
case ServiceOperation.ConnectionRestored:
ConnectionRestored?.Invoke();
break;
case ServiceOperation.CredentialsInvalid:
LoginOrPasswordInvalid?.Invoke();
break;
case ServiceOperation.CredentialsLoaded:
CredentialsLoaded?.Invoke();
break;
case ServiceOperation.NeedClientSettings:
NeedClientSettings?.Invoke();
break;
case ServiceOperation.NeedRefresh:
NeedRefresh?.Invoke();
break;
case ServiceOperation.ScenariosChanged:
ScenariosChanged?.Invoke(Utils.GetData <ScenarioInfo[]>(msg));
break;
case ServiceOperation.SecretCodeInvalid:
SecretCodeInvalid?.Invoke();
break;
case ServiceOperation.ConnectionError:
ConnectionError?.Invoke();
break;
}
}
private bool HandleExceptions(Action action)
{
var cancellationToken = _operationCancellationTokenSource.Token;
bool success = false;
try
{
if (_credentials != null && (_serviceClient?.IsClosedOrFaulted ?? false))
{
_serviceClient = ClientsManager.Create(_credentials.Value);
}
if (ConnectionState == ManagerConnectionState.Disconnected)
{
ConnectionState = ManagerConnectionState.Connecting;
}
action();
success = true;
if (ConnectionState != ManagerConnectionState.Connected)
{
ConnectionState = ManagerConnectionState.Connected;
ConnectionRestored?.Invoke();
}
}
catch (System.Exception e)
{
if (!cancellationToken.IsCancellationRequested)
{
if (SystemUtils.IsFaultExceptionHasCode(e, ServiceFaultCodes.AccessDenied))
{
LoginOrPasswordInvalid?.Invoke();
}
//if data is wrong or secretKey.Length is wrong
else if (
SystemUtils.IsFaultExceptionHasCode(e, ServiceFaultCodes.DecryptionError) ||
e is SerializationException ||
e is DecryptException ||
e.Message == "Key length not 128/192/256 bits.")
{
SecretCodeInvalid?.Invoke();
}
else if (ConnectionState != ManagerConnectionState.Connected)
{
ConnectionLost?.Invoke();
}
else
{
ConnectionError?.Invoke();
}
ConnectionState = ManagerConnectionState.Disconnected;
success = false;
}
}
if (cancellationToken.IsCancellationRequested)
{
return(false);
}
return(success);
}
private void OnDeviceConnectionLost(object sender, DeviceErrorEventArgs e)
{
if (_device.Equals(e.Device))
{
Debug.WriteLine("Device connection lost!");
_characteristics.Clear();
ConnectionLost.Invoke(this, null);
}
}
public DynamicEndpoint(dynamic client)
{
this.client = client;
ITransportationLayer transport = client;
transport.ConnectionEstablished += () => ConnectionEstablished?.Invoke();
transport.ConnectionLost += () => ConnectionLost?.Invoke();
transport.ProviderDataReady += data => ProviderDataReady?.Invoke(data);
}
public async Task Send(T message)
{
if (message.Equals(default(T)))
{
throw new ArgumentNullException(nameof(message));
}
bool alive = Socket.Ping();
if (!alive)
{
throw new TransferException($"The Socket to {EndPoint} is not responding!");
}
try
{
// build byte[] out of message (serialize with ZeroFormatter)
var bytes = ZeroFormatterSerializer.Serialize(message);
var segment = new ArraySegment <byte>(bytes);
int size = bytes.Length;
await LeadingByteProcessor.SendLeading(Socket, size)
.ConfigureAwait(false); // Send receiver the byte count
//TODO: Decide whether to catch errors in buffer-loop and continue once fixed or cancel whole send?
int written = 0;
while (written < size)
{
int send = size - written; // current buffer size
if (send > SendBufferSize)
{
send = SendBufferSize; // max size
}
var slice = segment.SliceEx(written, send); // buffered portion of array
written = await Socket.SendAsync(slice, SocketFlags.None).ConfigureAwait(false);
}
if (written < 1)
{
throw new TransferException($"{written} bytes were sent! " +
"Null bytes could mean a connection shutdown.");
}
} catch (SocketException)
{
ConnectionLost?.Invoke(EndPoint);
// On any error - cancel whole buffered writing
if (AutoReconnect)
{
await Reconnect().ConfigureAwait(false); // Try reconnecting and re-send everything once reconnected
}
else
{
throw; // Throw if we're not trying to reconnect
}
}
}
private void SocketClosed()
{
log.Write(LogVerbosity.Debug, "Socket closed");
if (!reconnecting && registrations.Any())
{
reconnecting = true;
ConnectionLost?.Invoke();
Task.Run(() => TryReconnect());
}
}
public void Close(bool invokeConnectionLostEvent)
{
if (_socket.Connected && invokeConnectionLostEvent)
{
ConnectionLost?.Invoke(this, null);
}
_socket.Close();
Stream?.Close();
}
private void onConnectionLost()
{
if (!isConnected())
{
Debug.Assert(false);
return;
}
startConnectionCheckingTimer();
Trace.TraceInformation("[GitLabInstance] Connection lost ({0})", HostName);
ConnectionLost?.Invoke();
}
private void OnConnectionLost()
{
// In order to play nicely with WinForms controls, we do a check here to
// see if it is necessary to synchronize this event with the UI thread.
// if (!(ConnectionLost?.Target is Control)) return;
// var target = (Control) ConnectionLost.Target;
//
// if (target != null)
// target.Invoke(ConnectionLost, this, EventArgs.Empty);
// else
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
private void OnDisconnected(object sender, DisconnectedEventArgs e)
{
var removed = _peripherals.Remove(e.Connection, out var peripheral);
if (!removed || e.Reason == 0x0216) // We didn't hold the connection or disconnected by central.
{
return;
}
var eventArgs = new PeripheralEventArgs(peripheral);
ConnectionLost?.Invoke(this, eventArgs);
}
private void ExceptionFreeAction(Action action, [CallerMemberName] string actionName = null)
{
try
{
action();
LastActionToServer = DateTime.Now;
}
catch (Exception ex)
{
Log.Default.WriteLine(LogLevels.Error, "Exception:{0} {1}", actionName, ex);
ConnectionLost?.Invoke();
_factory?.Abort();
}
}
/// <summary>
/// Send a set command to the connected switch
/// </summary>
/// <param name="pinNumber">The pin to set</param>
/// <param name="state">The state to set the pin to, either high or low</param>
public void SetPinState(byte pinNumber, byte state)
{
if (stream == null)
{
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
try {
var data = new[] { CmdSet, pinNumber, state };
stream?.Write(data, 0, 3);
} catch (Exception e) {
ConnectionLost?.Invoke(this, EventArgs.Empty);
}
}
private ApplicationConnectionManager(ITransportationLayer transportationLayer,
ProtocolTree protocolTree, FTConnectionController ft) : this(transportationLayer)
{
this.ft = ft;
tree.Register(ft);
tree.Entry(ft);
tree.Connect(ft, protocolTree);
ft.ConnectionLost += () =>
{
CloseConnectionAndCleanUp();
ConnectionLost?.Invoke();
};
}