public void Start(int port, int maxConnections, int maxMemory = -1)
{
Console.WriteLine("{0} - Starting ChatRoomServer on port {1} for {2} clients...", ChatTime.GetTimeFormat(), port, maxConnections);
userHandler = new UserHandler("users.db", maxConnections);
socket.Bind(new IPEndPoint(IPAddress.Any, port));
socket.Listen(5);
clientConnections = new ClientConnection[maxConnections];
Process process;
for (int i = 0; i < maxConnections; i++)
{
int tempI = i;
new Thread(new ParameterizedThreadStart(delegate { ClientHandler(tempI); })).Start();
if (i % 2000 == 0)
{
process = Process.GetCurrentProcess();
if (maxMemory != -1 && (process.PrivateMemorySize64 / 2000000) > maxMemory)
{
Console.WriteLine("Exceeded memory limit at {0} megabytes at client number {1}.", maxMemory, i + 1);
break;
}
}
}
Console.WriteLine("{0} - Done!", ChatTime.GetTimeFormat());
}
private void ClientHandler(int id)
{
while (true)
{
ClientConnection currentClient = clientConnections[id] = new ClientConnection(id, socket.Accept());
try
{
Console.WriteLine("{0} <{1}> - Received connection from {2}", ChatTime.GetTimeFormat(), currentClient.ID, currentClient.GetConnectionString());
byte[] receiveBuffer = new byte[1024 * 2];
int receiveSize = currentClient.Connection.Receive(receiveBuffer);
LoginExchange loginExchange = LoginExchange.Decode(receiveBuffer, receiveSize);
Console.WriteLine("{0} <{1}> - Login request from '{2}'.", ChatTime.GetTimeFormat(), currentClient.ID, loginExchange.Username);
LoginExchangeResponse loginExchangeResponse = userHandler.HandleLoginExchange(loginExchange, currentClient);
string loginResponseData = loginExchangeResponse.Encode();
byte[] loginResponse = Encoding.UTF8.GetBytes(loginResponseData);
currentClient.Connection.Send(loginResponse);
if (loginExchangeResponse.ExchangeType == LoginExchangeResponseCode.Successful)
{
User user = userHandler.GetUser(id);
Console.WriteLine("{0} <{1}> - User '{2}' logged in with token '{3}'.", ChatTime.GetTimeFormat(), currentClient.ID, user.Name, user.Token);
while (user != null)
{
receiveBuffer = new byte[1024 * 2];
receiveSize = currentClient.Connection.Receive(receiveBuffer);
if (receiveSize > 0)
{
ChatExchange chatExchange = ChatExchange.Decode(Encoding.UTF8.GetString(receiveBuffer, 0, receiveSize));
if (user.Verify(chatExchange))
{
switch (chatExchange.ExchangeType)
{
case ChatExchangeType.Message:
Console.WriteLine("{0} <{1}> - [{2}] {3}: {4}", ChatTime.GetTimeFormat(), currentClient.ID, user.CurrentChatRoom.Name, user.Name, chatExchange.Exchange);
MessageHandler(chatExchange, user);
break;
case ChatExchangeType.Command:
Console.WriteLine("{0} <{1}> - Command: {2}", ChatTime.GetTimeFormat(), currentClient.ID, chatExchange.Exchange);
CommandHandler(chatExchange, user);
break;
case ChatExchangeType.ChatRoomList:
Console.WriteLine("{0} <{1}> - Requested Chat Room List", ChatTime.GetTimeFormat(), currentClient.ID);
ChatRoomListHandler(chatExchange, user);
break;
case ChatExchangeType.JoinRoom:
Console.WriteLine("{0} <{1}> - Join Room: ID '{2}'", ChatTime.GetTimeFormat(), currentClient.ID, chatExchange.ExchangeTargetName);
JoinRoomHandler(chatExchange, user);
break;
case ChatExchangeType.LeaveRoom:
Console.WriteLine("{0} <{1}> - Leave Room", ChatTime.GetTimeFormat(), currentClient.ID);
LeaveRoomHandler(chatExchange, user);
break;
case ChatExchangeType.CreateRoom:
Console.WriteLine("{0} <{1}> - Create Room: '{2}'", ChatTime.GetTimeFormat(), currentClient.ID, chatExchange.ExchangeTargetName);
CreateChatRoomHandler(chatExchange, user);
break;
case ChatExchangeType.Error:
Console.WriteLine("{0} <{1}> - ChatExchange Error Occurred", ChatTime.GetTimeFormat(), currentClient.ID, chatExchange.ExchangeTargetName);
break;
}
}
}
else
{
break;
}
}
}
Console.WriteLine("{0} <{1}> - Ending connection.", ChatTime.GetTimeFormat(), currentClient.ID);
}
catch (SocketException)
{
Console.WriteLine("{0} <{1}> - Lost connection.", ChatTime.GetTimeFormat(), currentClient.ID);
}
finally
{
userHandler.Logout(id);
currentClient = null;
}
}
}
