public Form1(Server server)
{
InitializeComponent();
Login_Helper.InitializeDB();
this.server = server;
logwork.DoWork += Logwork_DoWork;
logwork.RunWorkerCompleted += Logwork_RunWorkerCompleted;
userWork.DoWork += UserWork_DoWork;
userWork.RunWorkerCompleted += UserWork_RunWorkerCompleted;
logwork.RunWorkerAsync();
userWork.RunWorkerAsync();
}
private void ReceiveCallback(IAsyncResult ar)
{
//better to initailize these outside the try catch to make them accessable throughout method
Socket socket = (Socket)ar.AsyncState;
ProcessCodes code;
string[] msg;
int received;
string text;
byte[] dataBuff;
//Everythings done in a try catch in case the client unexpectedly disconnects it doesnt crash the server
try
{
received = socket.EndReceive(ar);
Users user = userList.Find(i => i.IP == socket.RemoteEndPoint.ToString());
if (user.Name != null && user.Name != "")
{
log("Received msg from " + user.Name);
}
dataBuff = new byte[received];
Array.Copy(g_buffer, dataBuff, received);
text = Encoding.ASCII.GetString(dataBuff);
msg = text.Split(' ');
}
catch (SocketException)
{
Users user = userList.Find(i => i.IP == socket.RemoteEndPoint.ToString());
if (user.Name != null && user.Name != "")
{
log(user.Name + " Has Forcefully Disconnected!");
Login_Helper.UpdateUser(user.Name);
}
else
{
log("Random Client Has Forcefully Disconnected! " + socket.RemoteEndPoint.ToString());
}
var ItemToRemove = userList.Single(i => i.IP == socket.RemoteEndPoint.ToString());
socket.Close();
//clientSockets.Remove(socket);
userList.Remove(ItemToRemove);
return;
}
//incase the code given is not an actual code so we dont run into formatting problems and the server crashes
try
{
code = (ProcessCodes)UInt16.Parse(msg[0]);
}
catch (System.FormatException e)
{
var toRemove = userList.Single(i => i.IP == socket.RemoteEndPoint.ToString());
userList.Remove(toRemove);
log("Error connecting user, possibly malicaious " + socket.RemoteEndPoint);
return;
}
switch (code)//first item is always code
{
case ProcessCodes.Login:
{
ErrorCodes tempCode = Login_Helper.doLogin(msg[1], msg[2]);
byte[] data = Encoding.ASCII.GetBytes(Convert.ToString(tempCode));
if (tempCode == ErrorCodes.Success)
{
log(msg[1] + " Has Logged In!");
userList.Find(i => i.IP == socket.RemoteEndPoint.ToString()).Name = msg[1];
IPEndPoint ipAdd = socket.RemoteEndPoint as IPEndPoint;
Login_Helper.UpdateUser(ipAdd.ToString(), msg[1], 1);
}
socket.BeginSend(data, 0, data.Length, SocketFlags.None, new AsyncCallback(SendCallback), socket);
socket.BeginReceive(g_buffer, 0, g_buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), socket);
}
break;
case ProcessCodes.Version:
{
if (clientVersion.Equals(msg[1]))
{
log("Client versions matched, cleared for login");
byte[] data = Encoding.ASCII.GetBytes(Convert.ToString(ErrorCodes.Version_Success.ToString()));
socket.BeginSend(data, 0, data.Length, SocketFlags.None, new AsyncCallback(SendCallback), socket);
socket.BeginReceive(g_buffer, 0, g_buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), socket);
}
else
{
log("Client versions do match closing client");
byte[] data = Encoding.ASCII.GetBytes(Convert.ToString(ErrorCodes.Error.ToString()) + " " + clientVersion);
socket.BeginSend(data, 0, data.Length, SocketFlags.None, new AsyncCallback(SendCallback), socket);
socket.BeginReceive(g_buffer, 0, g_buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), socket);
}
}
break;
default: { ProcessError(ar); } break;
}
}
