// https://stackoverflow.com/questions/19415646/should-i-avoid-async-void-event-handlers
private async void _OnClientConnectionStateChangedCallback(bool clientConnectionState)
{
// lock current execution context
await _semaphore.WaitAsync();
// due to the peculiarities of the work of the old and new client
// where the old one, in case of an unauthorized state, generates two events of changing the state of the connection at once
// the first is positive, and the second, negative
// while a negative one is generated after receiving the first request (which is a request to obtain data about an authorized user)
// the new client, in an unauthorized state, generates only one event, negative
// so the code is structured to be compatible with these two situations
// to solve this problem, the concept of an internal state was introduced (there are three of them at once)
// no decisions about the state of the connection will be made until the incoming state is different from the previous one
if (_internalConnectionState == null || _internalConnectionState.Value != clientConnectionState)
{
var isAuthorized = false;
// so, if we have connected to the host, this does not mean that the connection is active (for example, the user has not yet logged into the ZClient)
// therefore, before we say in the affirmative that the connection has been established, we will try to get an authorized user
if (clientConnectionState)
{
var userRequest = ZRequestFactory.CreateUserInfoRequest();
var response = await ZRouter.GetResponseAsync(userRequest);
if (response.StatusCode == ZResponseStatusCode.Ok)
{
_currentUserInfo = _ParseUserInfo(response.ResponsePackets);
_pingTimer.Start();
isAuthorized = true;
}
else
{
_logger.Warning($"Request failed {userRequest}");
}
// set current connection state
_internalConnectionState = isAuthorized;
}
else
{
// reset internal connection state
_internalConnectionState = null;
_currentUserInfo = null;
_pingTimer.Stop();
}
// ReSharper disable once InvertIf
if (_raiseOnConnectionChangedEvent)
{
_RaiseOnConnectionChangedEvent(IsConnected, _currentUserInfo);
_raiseOnConnectionChangedEvent = true;
}
}
_semaphore.Release();
}
public async Task <ZRunResult> RunAsync()
{
// send request to run the game
var request = ZRequestFactory.CreateRunGameRequest(_targetGame.RunnableName, _runArgs);
var response = await ZRouter.GetResponseAsync(request);
if (response.StatusCode != ZResponseStatusCode.Ok)
{
return(ZRunResult.Error);
}
// parse run results
var runResult = _parser.Parse(response.ResponsePackets.Single());
// ReSharper disable once InvertIf
if (runResult == ZRunResult.Success)
{
// prepare instance state to track game state
// begin track
_pipe = new _GamePipe(_logger, _pipeName);
_pipe.PipeEvent += _PipeEventHandler;
_processTracker.ProcessDetected += _ProcessTrackerOnProcessDetected;
_processTracker.ProcessLost += _ProcessTrackerOnProcessLost;
// begin track process tracker
_processTracker.StartTrack();
}
return(runResult);
}
public async void Inject(ZGame game, IEnumerable <string> dllPaths)
{
foreach (var dllPath in dllPaths)
{
var request = ZRequestFactory.CreateDllInjectRequest(game, dllPath);
var response = await ZRouter.GetResponseAsync(request);
}
}
private async void _OnStreamRejectedCallback()
{
_isStreamRejected = true;
// close stream
var request = ZRequestFactory.CreateServerListCloseStreamRequest(_gameContext);
await ZRouter.CloseStreamAsync(request);
}
public void Connect()
{
// already connected ?
if (IsConnected)
{
return;
}
ZRouter.Start();
}
public void StartReceiving()
{
if (__disposed)
{
throw new InvalidOperationException("Object disposed.");
}
var openStreamRequest = ZRequestFactory.CreateServerListOpenStreamRequest(_gameContext);
var response = ZRouter.OpenStreamAsync(openStreamRequest, _packetsReceivedHandler, _OnStreamRejectedCallback).Result;
}
private async void _OnPingTimerElapsedCallback(object sender, ElapsedEventArgs e)
{
// we are playing Ping-Pong with ZClient
var pingRequest = ZRequestFactory.CreatePingRequest();
var pongResponse = await ZRouter.GetResponseAsync(pingRequest);
// check and set current connection state
if (pongResponse.StatusCode != ZResponseStatusCode.Ok)
{
// burning bridges, completely :)
Disconnect(true);
}
}
public void Disconnect(bool raiseEvent = true)
{
// already disconnected ?
if (!IsConnected)
{
return;
}
// prepare to disconnect
_raiseOnConnectionChangedEvent = raiseEvent;
// disconnect
ZRouter.Stop();
}
private bool?_internalConnectionState = null; // where [null] - initial state, [true/false] - concrete state
public ZConnection()
{
_userInfoParser = ZParsersFactory.CreateUserInfoParser();
_logger = ZLogger.Instance;
_pingTimer = new Timer(PING_INTERVAL)
{
Enabled = false, AutoReset = true
};
_pingTimer.Elapsed += _OnPingTimerElapsedCallback;
// track client connection state
ZRouter.Initialize();
ZRouter.ConnectionChanged += _OnClientConnectionStateChangedCallback;
}
public void Dispose()
{
if (__disposed)
{
return;
}
if (!_isStreamRejected)
{
var request = ZRequestFactory.CreateServerListCloseStreamRequest(_gameContext);
var response = ZRouter.CloseStreamAsync(request).Result;
}
_parser.Close();
__disposed = true;
}
public async Task <ZInstalledGames> GetInstalledGamesAsync()
{
ZInstalledGames installedGames = null;
var request = ZRequestFactory.CreateInstalledGamesRequest();
var response = await ZRouter.GetResponseAsync(request);
if (response.StatusCode != ZResponseStatusCode.Ok)
{
_logger.Warning($"Request fail {request}");
}
else
{
var responsePacket = response.ResponsePackets.Single();
installedGames = _installedGamesParser.Parse(responsePacket);
}
return(installedGames);
}
public async Task <ZStatsBase> GetStatsAsync(ZGame game)
{
ZStatsBase stats = null;
var request = ZRequestFactory.CreateStatsRequest(game);
var response = await ZRouter.GetResponseAsync(request);
if (response.StatusCode != ZResponseStatusCode.Ok)
{
_logger.Error($"Request fail {request}");
}
else
{
switch (game)
{
case ZGame.BF3: stats = _parser.ParseBF3Stats(response.ResponsePackets); break;
case ZGame.BF4: stats = _parser.ParseBF4Stats(response.ResponsePackets); break;
}
}
return(stats);
}
