public (UInt16, RoomStruct) BytesToRoomStruct(ref byte[] data)
{
RoomStruct room = new RoomStruct();
UInt16 errorCode = Constants.ROOM_CREATE_SUCCESS;
if (data.Length + Constants.MESSAGE_BASE < PacketSizes.ROOM_CREATE_MIN)
{
return(Constants.ROOM_CREATE_FAILURE, room);
}
if (data.Length + Constants.MESSAGE_BASE > (PacketSizes.ROOM_CREATE_MAX))
{
return(Constants.ROOM_PASSWORD_BAD, room);
}
byte[] roomTypeBytes = new byte[2];
byte[] roomNameBytes = new byte[15];
byte[] roomPasswordBytes = new byte[15];
try
{
Array.Copy(data, roomTypeBytes, 2);
}
catch
{
return(Constants.ROOM_CREATE_FAILURE, room);
}
room.roomType = BitConverter.ToUInt16(roomTypeBytes, 0);
if (room.roomType == Constants.ROOM_TYPE_PRIVATE)
{
try
{
Array.Copy(data, 2, roomNameBytes, 0, 15);
}
catch
{
return(Constants.ROOM_NAME_BAD, room);
}
try
{
Array.Copy(data, 17, roomPasswordBytes, 0, data.Length - 17);
}
catch
{
return(Constants.ROOM_PASSWORD_BAD, room);
}
}
if (room.roomType == Constants.ROOM_TYPE_PRIVATE)
{
room.roomName = Encoding.ASCII.GetString(roomNameBytes);
room.roomPassword = Encoding.ASCII.GetString(roomPasswordBytes);
}
return(errorCode, room);
}
public (RoomStruct, UInt16) DecodeJoinPrivateRoom(ref byte[] data)
{
byte[] roomNameBytes = new byte[Constants.ROOM_NAME_LENGTH_MAX - 1];
byte[] roomPasswordBytes;
string password = "";
Array.Copy(data, roomNameBytes, 15);
string roomName = Encoding.ASCII.GetString(roomNameBytes);
if (data.Length >= Constants.ROOM_NAME_LENGTH_MAX - 1)
{
roomPasswordBytes = new byte[data.Length - (Constants.ROOM_NAME_LENGTH_MAX - 1)];
Array.Copy(data, Constants.ROOM_NAME_LENGTH_MAX - 1, roomPasswordBytes, 0, roomPasswordBytes.Length);
password = Encoding.ASCII.GetString(roomPasswordBytes);
}
Console.WriteLine(roomName);
RoomStruct room = new RoomStruct();
room.roomType = Constants.ROOM_TYPE_PRIVATE;
room.roomName = roomName;
room.roomPassword = password;
return(room, Constants.ROOM_PRIVATE_JOIN_SUCCESS);
}
public Room CreatePrivateRoom(Client client, ref RoomStruct room)
{
room.roomName = room.roomName.Trim('\0');
room.roomPassword = room.roomPassword.Trim('\0');
Room newRoom = new Room(client, room.roomType, client._clientId, room.roomName, room.roomPassword);
return(newRoom);
}
public UInt16 CheckRoomForErrors(ref RoomStruct room, Client c)
{
if (c._isInRoom)
{
return(Constants.USER_ALREADY_IN_ROOM);
}
if (CheckRoomType(room.roomType) != Constants.ROOM_TYPE_OK)
{
return(Constants.ROOM_TYPE_BAD);
}
if (room.roomType == Constants.ROOM_TYPE_PUBLIC)
{
return(Constants.ROOM_CREATE_SUCCESS);
}
UInt16 errorCode = CheckRoomName(room.roomName);
if (errorCode == Constants.ROOM_NAME_IN_USE)
{
return(Constants.ROOM_NAME_IN_USE);
}
else if (errorCode == Constants.ROOM_NAME_BAD)
{
return(Constants.ROOM_NAME_BAD);
}
else if (CheckRoomPassword(room.roomPassword) != Constants.ROOM_PASSWORD_OK)
{
return(Constants.ROOM_PASSWORD_BAD);
}
return(Constants.ROOM_CREATE_SUCCESS);
}
private static void RecieveCallback(IAsyncResult AR)
{
try
{
Socket socket = (Socket)AR.AsyncState;
int recieved = socket.EndReceive(AR);
if (recieved == 0)
{
RemoveClient(ref socket, Constants.LOGOUT_FORCED);
return;
}
else if (recieved > 512)
{
DisconnectUser(ref socket);
return;
}
counter++;
UInt16 message_number = Messages.BAD_PACKET, packet_length = UInt16.MaxValue;
int clientId = socket.GetHashCode();
//Packet handling recieving/sending
byte[] dataBuff = new byte[recieved];
Array.Copy(_buffer, dataBuff, recieved);
//Breaking down buffer into segments
byte[] message_number_bytes = new byte[2];
byte[] packet_length_bytes = new byte[2];
byte[] data = new byte[Constants.SEND_BUFFER_SIZE];
try
{
data = new byte[recieved - Constants.MESSAGE_BASE];
if (recieved >= Constants.MESSAGE_BASE)
{
Array.Copy(dataBuff, message_number_bytes, 2);
Array.Copy(dataBuff, 2, packet_length_bytes, 0, 2);
Array.Copy(dataBuff, 4, data, 0, dataBuff.Length - 4);
//Turn bytes to usuable data
(message_number, packet_length) = serverHelper.BytesToMessageLength(message_number_bytes, packet_length_bytes);
}
//Print to console recieved data
serverHelper.PrintRecievedData(clientId, message_number, packet_length, ref data, ref dataBuff);
}
catch
{
Console.WriteLine(clientId + " sent bad packet!");
}
UInt16 message_number_send = UInt16.MaxValue;
UInt16 lengthToSend = 0;
byte[] dataToSendTemp = new byte[512];
#region MESSAGE HANDLING
switch (message_number)
{
case Messages.SET_NAME_REQUEST:
{
string temp_name = Encoding.ASCII.GetString(data);
UInt16 response = _connectedClients[clientId].SetName(ref temp_name);
//Generating send data
{
message_number_send = Messages.SET_NAME_RESPONSE;
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, response);
}
break;
}
case Messages.LOGOUT:
{
RemoveClient(ref socket, Constants.LOGOUT_NORMAL);
break;
}
case Messages.USER_ID_REQUEST:
{
message_number_send = Messages.USER_ID_RESPONSE;
(lengthToSend, dataToSendTemp) = packetHelper.IntToBytes(message_number_send, clientId);
break;
}
#region ROOM_MESSAGES
case Messages.ROOM_CREATE_REQUEST:
{
if (data.Length <= Constants.MESSAGE_BASE + Constants.ROOM_NAME_LENGTH_MAX + Constants.ROOM_PASSWORD_LENGTH_MAX + 1)
{
(UInt16 errorCode, RoomStruct room) = packetHelper.BytesToRoomStruct(ref data);
message_number_send = Messages.ROOM_CREATE_RESPONSE;
if (_connectedClients[clientId]._isInRoom || _connectedClients[clientId]._findingRoom)
{
errorCode = Constants.ROOM_CREATE_FAILURE;
}
else
{
if (errorCode == Constants.ROOM_CREATE_FAILURE || errorCode == Constants.ROOM_NAME_BAD || errorCode == Constants.ROOM_PASSWORD_BAD)
{
Console.WriteLine("Room creation failed!");
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, errorCode);
}
//Proceed
else if (errorCode == Constants.ROOM_CREATE_SUCCESS)
{
//reusing errorCode
errorCode = roomHelper.CheckRoomForErrors(ref room, _connectedClients[clientId]);
//if everything went good
if (errorCode == Constants.ROOM_CREATE_SUCCESS)
{
message_number_send = Messages.ROOM_CREATE_RESPONSE;
//Dont forget to check if user is already in a room, or owns one
Console.WriteLine("------------------------------------------------------------");
Console.WriteLine(clientId + " has created a room id: " + clientId);
Console.WriteLine("Room Type: " + room.roomType + "\nRoom Name: " + room.roomName + "\nRoom Password: "******"------------------------------------------------------------");
Room newRoom;
if (room.roomType == Constants.ROOM_TYPE_PUBLIC)
{
newRoom = roomHelper.CreatePublicRoom(_connectedClients[clientId]);
_connectedClients[clientId].EnteredRoom(ref newRoom);
try
{
_publicRooms.Add(clientId, newRoom);
}
catch
{
}
}
else
{
newRoom = roomHelper.CreatePrivateRoom(_connectedClients[clientId], ref room);
_connectedClients[clientId].EnteredRoom(ref newRoom);
_privateRooms.Add(room.roomName, newRoom);
}
}
}
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, errorCode);
}
}
else
{
Console.WriteLine("Invalid packet for room creation!");
}
break;
}
//gotta kick people off too
case Messages.ROOM_ABANDON_REQUEST:
{
Console.WriteLine("------------------------------------------------------------");
Console.WriteLine(clientId + " attempting to abandon room ID: " + clientId);
Console.WriteLine("------------------------------------------------------------");
message_number_send = Messages.ROOM_ABANDON_RESPONSE;
int recieved_id = BitConverter.ToInt32(data, 0);
int p2id = 0;
if (_connectedClients[clientId]._currentRoom.refClients[1] != null)
{
p2id = _connectedClients[clientId]._currentRoom.refClients[1]._clientId;
}
UInt16 errorCode = roomHelper.AbandonRoom(_connectedClients[clientId], ref recieved_id);
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, errorCode);
if (errorCode == Constants.ROOM_ABANDONED_SUCCESS)
{
//telling player 2 that room has closed
if (p2id != 0)
{
try
{
SendDataRoomAbandoned(_connectedClients[p2id]._socket, p2id);
}
catch
{
}
}
Console.WriteLine("------------------------------------------------------------");
Console.WriteLine(clientId + " succesffully abandoned room ID: " + clientId);
Console.WriteLine("------------------------------------------------------------");
}
break;
}
case Messages.ROOM_JOIN_PUBLIC_ROOM_REQUEST:
{
message_number_send = Messages.ROOM_JOIN_PUBLIC_ROOM_RESPONSE;
if (_connectedClients[clientId]._isInRoom)
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_JOIN_FAILURE);
}
else
{
Console.WriteLine("People in queue: " + _clientQueue.Count);
Console.WriteLine(clientId + " added to queue. PUBLIC_ROOM");
_connectedClients[clientId]._findingRoom = true;
_clientQueue.Add(clientId);
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_JOIN_SUCCESS);
}
}
break;
case Messages.ROOM_JOIN_PRIVATE_ROOM_REQUEST:
{
message_number_send = Messages.ROOM_JOIN_PRIVATE_ROOM_RESPONSE;
UInt16 errorCode;
if (_connectedClients[clientId]._isInRoom)
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_PRIVATE_JOIN_FAILURE);
}
else
{
RoomStruct room = new RoomStruct();
//decode
{
errorCode = Constants.ROOM_PRIVATE_JOIN_SUCCESS;
(room, errorCode) = packetHelper.DecodeJoinPrivateRoom(ref data);
room.roomName = room.roomName.Trim('\0');
room.roomPassword = room.roomPassword.Trim('\0');
if (!_privateRooms.ContainsKey(room.roomName))
{
errorCode = Constants.ROOM_NAME_BAD;
}
else
{
if (_privateRooms[room.roomName]._roomPassword != room.roomPassword)
{
errorCode = Constants.ROOM_PASSWORD_BAD;
}
else if (!_privateRooms[room.roomName]._isEmpty)
{
errorCode = Constants.ROOM_FULL;
}
}
}
//send more data
if (errorCode == Constants.ROOM_PRIVATE_JOIN_SUCCESS)
{
//generate nice big msg
(lengthToSend, dataToSendTemp) = SendDataJoinedPrivateRoom(_privateRooms[room.roomName], _connectedClients[clientId]);
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, errorCode);
}
}
}
break;
case Messages.ROOM_CANCEL_FINDING_REQUEST:
{
message_number_send = Messages.ROOM_CANCEL_FINDING_RESPONSE;
if (_connectedClients[clientId]._findingRoom)
{
Console.WriteLine(clientId + " removed from queue.");
_clientQueue.Remove(clientId);
_connectedClients[clientId].ClearStatus();
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_CANCEL_FINDING_SUCCESS);
}
else
{
_connectedClients[clientId].ClearStatus();
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_CANCEL_FINDING_FAILURE);
}
}
break;
case Messages.ROOM_LEAVE_REQUEST:
{
message_number_send = Messages.ROOM_LEAVE_RESPONSE;
{
if (_connectedClients[clientId]._isInRoom)
{
Console.WriteLine(clientId + " has left the room id: " + _connectedClients[clientId]._currentRoom._roomId);
int p1id = _connectedClients[clientId]._currentRoom._roomAdmin._clientId;
_connectedClients[clientId]._currentRoom.RemovePlayer2();
_connectedClients[clientId].ClearStatus();
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_LEAVE_SUCCESS);
//Tell other player of room that player has left.
SendDataPlayerLeftRoom(p1id);
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_LEAVE_FAILURE);
}
}
break;
}
case Messages.ROOM_CHANGE_MAP_REQUEST:
{
UInt16 request = BitConverter.ToUInt16(data, 0);
message_number_send = Messages.ROOM_CHANGE_MAP_RESPONSE;
//checking if user is admin of a room
if (_connectedClients[clientId]._currentRoom._roomAdmin._clientId == clientId)
{
if (request <= MapManager._NumberOfMaps - 1)
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_MAP_CHANGE_SUCCESS);
_connectedClients[clientId]._currentRoom.game.SetMap(request);
SendMapChangedData(_connectedClients[clientId]._currentRoom);
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_MAP_CHANGE_FAILURE);
}
}
break;
}
case Messages.ROOM_CHANGE_DIFFICULTY_REQUEST:
{
UInt16 request = BitConverter.ToUInt16(data, 0);
message_number_send = Messages.ROOM_CHANGE_DIFFICULTY_RESPONSE;
//check if user requesting change is admin
try
{
if (_connectedClients[clientId]._currentRoom._roomAdmin._clientId == clientId)
{
if (request <= Constants.ROOM_DIFFICULTY_HARD)
{
_connectedClients[clientId]._currentRoom.game.SetDifficulty(request);
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_DIFFICULTY_CHANGE_SUCCESS);
}
else
{
_connectedClients[clientId]._currentRoom.game.SetDifficulty(Constants.ROOM_DIFFICULTY_EASY);
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(message_number_send, Constants.ROOM_DIFFICULTY_CHANGE_FAILURE);
}
SendDifficultyChangedData(_connectedClients[clientId]._currentRoom);
}
}
catch
{
Console.WriteLine("Welp, nice checking...");
}
break;
}
//Used in private rooms
case Messages.ROOM_GAME_START_REQUEST:
{
if (_connectedClients[clientId]._currentRoom._roomAdmin._clientId == clientId)
{
if (!_connectedClients[clientId]._currentRoom._isEmpty)
{
_connectedClients[clientId]._currentRoom.StartGame();
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(Messages.ROOM_GAME_START_RESPONSE, Constants.ROOM_GAME_STARTED_FAILURE);
}
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(Messages.ROOM_GAME_START_RESPONSE, Constants.ROOM_GAME_STARTED_FAILURE);
}
break;
}
case Messages.GAME_PLAYER_DIRECTION_CHANGE_REQUEST:
{
message_number_send = Messages.GAME_PLAYER_DIRECTION_CHANGE_RESPONSE;
byte direction = data[0];
if (_connectedClients[clientId]._isInRoom && _connectedClients[clientId]._currentRoom.game._gameInProgress)
{
byte currentDir = 0;
bool player = false;
if (_connectedClients[clientId]._currentRoom.refClients[0]._clientId == clientId)
{
currentDir = _connectedClients[clientId]._currentRoom.game.P1Direction;
}
else
{
currentDir = _connectedClients[clientId]._currentRoom.game.P2Direction;
player = true;
}
if (Game.CheckValidDirection(currentDir, direction))
{
//player 1
if (!player)
{
_connectedClients[clientId]._currentRoom.game.P1Direction = direction;
}
else
{
_connectedClients[clientId]._currentRoom.game.P2Direction = direction;
}
(lengthToSend, dataToSendTemp) = packetHelper.ByteToBytes(message_number_send, direction);
}
}
break;
}
#endregion
#region ADMIN_STUFF
case Messages.ADMIN_LOGIN_REQUEST:
{
string password = Encoding.ASCII.GetString(data);
if (password == Constants.ADMIN_LOGIN_PASSWORD)
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(Messages.ADMIN_LOGIN_RESPONSE, Constants.ADMIN_LOGIN_SUCCESS);
_connectedClients[clientId]._isAdmin = true;
}
else
{
(lengthToSend, dataToSendTemp) = packetHelper.UInt16ToBytes(Messages.ADMIN_LOGIN_RESPONSE, Constants.ADMIN_LOGIN_FAILURE);
}
break;
}
case Messages.ADMIN_DUMP_USERS_TO_FILE:
{
if (!_connectedClients[clientId]._isAdmin)
{
break;
}
Console.WriteLine("[ADMIN]Dump users to file.");
using (StreamWriter file = new StreamWriter("connected_clients.txt"))
foreach (var entry in _connectedClients)
{
file.WriteLine("[ ClientId: {0} User Name: {1} IP: {2} ]", entry.Key, entry.Value._userName, entry.Value._socket.RemoteEndPoint);
}
break;
}
case Messages.ADMIN_DUMP_GAMES_TO_FILE:
{
if (!_connectedClients[clientId]._isAdmin)
{
break;
}
Console.WriteLine("[ADMIN]Dump games to file.");
Console.WriteLine("Public game count: " + _publicRooms.Count);
Console.WriteLine("Private game count: " + _privateRooms.Count);
using (StreamWriter file = new StreamWriter("public_games.txt"))
foreach (var entry in _publicRooms)
{
file.WriteLine("[ GameID: {0}\n Game Name: {1}]", entry.Key, entry.Value._roomName);
}
using (StreamWriter file = new StreamWriter("private_games.txt"))
foreach (var entry in _privateRooms)
{
file.WriteLine("[ GameID: {0}\n Game Name: {1}]", entry.Key, entry.Value._roomName);
}
break;
}
#endregion
case Messages.BAD_PACKET:
{
lengthToSend = packetHelper.FillHeaderBlankData(Messages.BAD_PACKET, ref dataToSendTemp);
break;
}
default:
lengthToSend = packetHelper.FillHeaderBlankData(Messages.BAD_PACKET, ref dataToSendTemp);
break;
}
#endregion
#region DATA_SEND
byte[] dataToSend = new byte[lengthToSend];
Array.Copy(dataToSendTemp, dataToSend, lengthToSend);
if (lengthToSend > 0)
{
serverHelper.PrintSendingData(clientId, message_number_send, lengthToSend, ref dataToSend);
try
{
socket.BeginSend(dataToSend, 0, dataToSend.Length, SocketFlags.None, new AsyncCallback(SendCallback), socket);
}
catch
{
}
}
#endregion
socket.BeginReceive(_buffer, 0, _buffer.Length, SocketFlags.None, new AsyncCallback(RecieveCallback), socket);
}
catch (SocketException ex)
{
Console.WriteLine(ex.Message);
}
catch (ObjectDisposedException ex)
{
Console.WriteLine(ex.Message);
}
}
