public void OnReading()
{
if (receiver.Connected)
{
var stream = receiver.GetStream();
try
{
Utils.ReadBytes(stream, delegate(byte[] message)
{
OnMessage?.Invoke(this, message);
OnReading();
stream.Flush();
});
}
catch (Exception e)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, "Close connection, because - " + e.Message);
Close();
}
}
else
{
Close();
}
}
private void OnClientAccepted(IAsyncResult ar)
{
try
{
var connected = listener.EndAcceptTcpClient(ar);
var client = new ClientManager(connected, this);
client.OnMessage += OnMessage;
lock (connectedClients)
{
connectedClients.Add(client);
client.OnReading();
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Added new client");
}
}
catch (Exception e)
{
if (e.GetType() == typeof(SocketException) && ((SocketException)e).ErrorCode == 10004)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, e.Message);
}
else
{
throw;
}
}
}
private Server()
{
if (Instance != null)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, "Instance Already Created");
return;
}
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Server Started");
DbCon = DbConnection.Instance();
serverThread = new Thread(FactoryTcpListener)
{
Priority = ThreadPriority.AboveNormal
};
broadcastThread = new Thread(delegate()
{
foreach (var seconds in BroadCastAboutServer())
{
Thread.Sleep(seconds * 1000);
}
});
serverThread.Start();
broadcastThread.Start();
}
private void InitClientsThreads()
{
writingThread = new Thread(delegate()
{
while (true)
{
try
{
lock (connectedClients)
{
foreach (var client in connectedClients)
{
client.OnSending();
}
}
}
catch (Exception e)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, e.Message);
Thread.Sleep(100);
}
Thread.Sleep(50);
}
});
writingThread.Start();
}
private void OnSaveRequest(ClientManager clientManager, Message message)
{
var texts = Encoding.Unicode.GetString(message.Value).Split(';');
try
{
DbConnection.Instance().SaveRequest(texts[0], texts[1], DateTime.Now, clientManager.User);
}
catch (Exception e)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, "Couldn't save changes\n" + e.Message);
clientManager.SendMessage(MessageFactory(MessageType.SaveUnsuccessful, null));
return;
}
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Saved new request");
clientManager.SendMessage(MessageFactory(MessageType.SaveSuccessful, null));
}
public void Destroy()
{
lock (connectedClients)
{
connectedClients.ForEach(delegate(ClientManager client) {
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Client disconnected");
listener.BeginAcceptTcpClient(OnClientAccepted, null);
client.Close();
});
connectedClients.Clear();
}
listener.Stop();
serverThread.Abort();
writingThread?.Abort();
broadcastThread.Abort();
Instance = null;
}
private void FactoryTcpListener()
{
try
{
listener = new TcpListener(IPAddress.Any, ServerNormalPort);
listener.Start(MaxConnection);
for (var i = 0; i < MaxConnection; i++)
{
listener.BeginAcceptTcpClient(OnClientAccepted, null);
}
InitClientsThreads();
}
catch (Exception e)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, e.Message);
}
}
private void OnLoginRequest(ClientManager clientManager, Message message)
{
var data = Encoding.ASCII.GetString(message.Value).Split(';');
var login = data[0];
var password = data[1];
byte[] requests;
requests = DbConnection.Instance().GetRequests(login, password);
if (requests != null)
{
clientManager.User = login;
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Logged in " + login);
clientManager.SendMessage(MessageFactory(MessageType.LoginSuccessful, requests));
}
else
{
clientManager.SendMessage(MessageFactory(MessageType.LoginUnsuccessful, null));
}
}
public void OnSending()
{
if (!receiver.Connected || Queue.Count <= 0)
{
return;
}
try
{
var stream = receiver.GetStream();
var bytes = Utils.GenerateBytes(Queue.Dequeue());
stream.Write(bytes, 0, bytes.Length);
stream.Flush();
}
catch (SocketException e)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, "Client was disconnected - " + e.Message);
Close();
}
}
private void ServerOnMessage(ClientManager clientManager, byte[] data)
{
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Message, "Received a request");
var message = Message.ToMessage(data);
switch (message.Type)
{
case MessageType.LoginRequest:
OnLoginRequest(clientManager, message);
break;
case MessageType.SignUpRequest:
OnSignUpRequest(clientManager, message);
break;
case MessageType.SaveRequest:
OnSaveRequest(clientManager, message);
break;
default:
ConsoleMessenger.Log(ConsoleMessenger.Prefix.Error, "No implementation for case " + message.Type);
break;
}
}
private DbConnection()
{
Database.EnsureCreated();
var evolve = new Evolve.Evolve(new SqlConnection(CONNECTION_STRING), msg => ConsoleMessenger.Log(ConsoleMessenger.Prefix.System, msg))
{
Locations = new[] { $"{DIR}{Path.DirectorySeparatorChar}db{Path.DirectorySeparatorChar}migrations{Path.DirectorySeparatorChar}" },
IsEraseDisabled = true,
};
evolve.Migrate();
}
