private void ConnectInternal()
{
try
{
//start keepAlive timer only on first connect
if (_reconnectTimer == null)
{
_reconnectTimer = new System.Timers.Timer(_settings.ReconnectInterval * 1000);
_reconnectTimer.Elapsed += ReconnectTimer_Elapsed;;
_reconnectTimer.Start();
}
if (_isInConnectInternal)
{
return;
}
_isInConnectInternal = true;
if (_socket != null)
{
try { _socket.Dispose(); } catch { }
_socket = null;
}
foreach (var serverAddress in _settings.ServerAddressList)
{
try
{
_socket = TcpSocketsUtils.Connect(serverAddress.Item1, serverAddress.Item2);
break;
}
catch
{
OnDebugLog?.Invoke(DebugLogType.ConnectFailed, $" host:{serverAddress.Item1} port:{serverAddress.Item2} ");
}
}
_connectEvent.Set();
if (_socket != null)
{
IsConnected = true;
OnConnect?.Invoke();
TcpSocketsUtils.Recv(
_socket,
OnRecv,
OnExcp,
OnRecvProgress,
_settings.ReceiveBufferSize == 0 ? TcpSocketsUtils.ms_DefualtReceiveBufferSize : _settings.ReceiveBufferSize,
true);
}
}
catch (Exception ex)
{
}
finally
{
_isInConnectInternal = false;
}
}
private void OnSend(int dataSentBytes, int grossSentBytes)
{
TotalDataBytesSent += dataSentBytes;
TotalGrossBytesSent += grossSentBytes;
OnDebugLog?.Invoke(DebugLogType.OnSend, $"dataSentBytes:{dataSentBytes}, grossSentBytes:{grossSentBytes}, TotalDataBytesSent:{TotalDataBytesSent}, TotalGrossBytesSent:{TotalGrossBytesSent}");
}
private void ReconnectTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
if (_isDisposed)
{
return;
}
var isRecvActive = (DateTime.UtcNow - _lastRecvProgressTime).TotalSeconds < 10 || (DateTime.UtcNow - _lastRecvTime).TotalSeconds < 10;
if (isRecvActive)
{
var recvInProgressBuf = ConnectorsUtils.SerializeRequestPacket(ConnectorsUtils.RequestTypeRecvInProgress, 0, 0, 0, 0);
TcpSocketsUtils.Send(_socket, recvInProgressBuf, OnSend, OnExcp);
}
if ((DateTime.UtcNow - _lastKeepAliveTime).TotalSeconds > _settings.KeepAliveDisconnectInterval)
{
if (isRecvActive == false)
{
if (_socket != null && IsConnected)
{
OnDebugLog?.Invoke(DebugLogType.OnKeepAlive, "Need to Disconnect");
IsConnected = false;
try { _socket.Dispose(); } catch { }
_socket = null;
OnDisconnect?.Invoke();
}
}
else
{
OnDebugLog?.Invoke(DebugLogType.OnKeepAlive, "Need to Disconnect, but RecvProgressTime/RecvTime is in less than 10 seconds");
}
}
if (_socket == null || _socket.Connected == false) //todo: check also keep alive status
{
DisconnectInternal();
if (_settings.AutoReconnect)
{
ConnectInternal();
}
}
}
private void KeepAliveTimer_Elapsed(object sender, ElapsedEventArgs e)
{
_keepAliveTimestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
foreach (var connector in _contextMap.Values)
{
bool needToDisconnect = true;
//check new context
if ((DateTime.UtcNow - connector._connectedTime).TotalSeconds < _settings.KeepAliveGraceInterval)
{
needToDisconnect = false;
}
//_lastReceivedLeepAliveTimestamp less than 30 seconds, and if ReceivedInProgress give x6 time
var keepAliveDisconnectInterval = _settings.KeepAliveDisconnectInterval;
if ((DateTime.UtcNow - connector._lastReceivedInProgressTime).TotalSeconds < 20)
{
keepAliveDisconnectInterval *= 6;
}
if ((_keepAliveTimestamp - connector._lastReceivedKeepAliveTimestamp) < keepAliveDisconnectInterval)
{
needToDisconnect = false;
}
if (needToDisconnect)
{
OnDebugLog?.Invoke(connector, DebugLogType.OnKeepAlive, "Need to Disconnect");
try { connector.Socket.Close(); } catch { }
connector.OnExcp(null);
continue;
}
//send new keep alive
var keepaliveBuf = ConnectorsUtils.SerializeRequestPacket(ConnectorsUtils.RequestTypeKeepAlive, 0, 0, _keepAliveTimestamp, 0);
TcpSocketsUtils.Send(connector.Socket, keepaliveBuf, connector.OnSend, connector.OnExcp);
}
}
internal void TriggerOnDebugLog(ServerConnectorContext serverConnectorContext, DebugLogType logType, string info)
{
OnDebugLog?.Invoke(serverConnectorContext, logType, info);
}
public void SetDebugMode(bool debug)
{
DEBUG_ENABLED = debug;
onDebugLog += _Controller.DebugLog;
}
private void OnRecv(byte[] buf, int grossRecvBytes)
{
try
{
TotalDataBytesReceived += buf.Length;
TotalGrossBytesReceived += grossRecvBytes;
OnDebugLog?.Invoke(DebugLogType.Info, $"OnRecv - start, dataRecvBytes:{buf.Length}, grossRecvBytes:{grossRecvBytes}, TotalDataBytesReceived:{TotalDataBytesReceived}, TotalGrossBytesReceived:{TotalGrossBytesReceived}");
_lastRecvTime = DateTime.UtcNow;
// module, command
if (buf[0] == 0) //request response packet
{
object reqPacket = null;
int requestId = 0;
byte module = 0, command = 0, requestType = 0;
try
{
requestType = buf[1];
OnDebugLog?.Invoke(DebugLogType.Info, $"OnRecv - requestType = {requestType}");
if (requestType != ConnectorsUtils.RequestTypeRequestMultiResponses)
{
reqPacket = ConnectorsUtils.DeserializeRequestPacket(buf, _settings.PacketsMap, out requestId, out module, out command);
}
}
catch (Exception ex) { OnDebugLog?.Invoke(DebugLogType.OnRecvException, ex.ToString()); }
if (requestType == ConnectorsUtils.RequestTypeKeepAlive) //keep alive
{
_lastKeepAliveTime = DateTime.UtcNow;
TcpSocketsUtils.Send(_socket, buf, OnSend, OnExcp);
OnDebugLog?.Invoke(DebugLogType.OnKeepAlive, reqPacket.ToString());
return;
}
if (requestType == ConnectorsUtils.RequestTypeRequestResponse)
{
if (requestId % 2 == 1)
{
if (module == 0 && command == 1)
{
_reqResHandler.HandleExceptionResponse(
requestId,
new Exception("Exception in Server, check inner exception", new Exception((reqPacket ?? "").ToString())));
}
else
{
_reqResHandler.HandleResponse(requestId, reqPacket);
}
}
else
{
if (module == 0 && command == 1)
{
_reqResAsyncHandler.HandleExceptionResponse(
requestId,
new Exception("Exception in Server, check inner exception", new Exception((reqPacket ?? "").ToString())));
}
else
{
_reqResAsyncHandler.HandleResponse(requestId, reqPacket);
}
}
}
if (requestType == ConnectorsUtils.RequestTypeRequestMultiResponses)
{
reqPacket = ConnectorsUtils.DeserializeMultiResponsePacket(
buf, _settings.PacketsMap, out requestId,
out bool isLast, out int nReceived, out int nTotal,
out module, out command);
if (module == 0 && command == 1)
{
_reqMultiResHandler.HandleExceptionResponse(requestId, new Exception((reqPacket ?? "").ToString()));
}
else
{
OnDebugLog?.Invoke(DebugLogType.Info, $"OnRecv - ConnectorsUtils.RequestTypeRequestMultiResponses");
_reqMultiResHandler.HandleResponse(requestId, reqPacket, isLast, nReceived, nTotal);
}
}
}
else //packet
{
object packet = ConnectorsUtils.DeserializePacket(buf, _settings.PacketsMap, out byte module, out byte command);
_packetsQueue.Add(new Tuple <int, int, object>(module, command, packet));
}
}
catch (Exception ex)
{
OnDebugLog?.Invoke(DebugLogType.OnRecvException, ex.ToString());
}
}
private void OnDebugLog(OnDebugLog obj)
{
text.text += obj.message + "\n";
}
