/// <returns>if client is ok it returns the client else returns null</returns>
public Client addClient(TcpClient ClientSocket)
{
try
{
byte[] buffer = new byte[128];
int rcvBytes = 0;
NetworkStream stream = ClientSocket.GetStream();
rcvBytes = stream.Read(buffer, 0, 128); //reading the first data from client
//64 byte for session
//20 byte for username
//one byte for seprator
if (rcvBytes > 85)
{
Client.Kill(ClientSocket); return(null);
}
Array.Resize(ref buffer, rcvBytes);
string firstConnectionData;
if (Messages.decode(buffer, out firstConnectionData))
{
string[] temp = firstConnectionData.Split(";".ToCharArray(), 2);
if (temp.Length != 2 || temp[0].Length != 32 || temp[1].Length > 20)
{
Client.Kill(ClientSocket); return(null);
}
//temp[0] is session
//temp[1] is username
//now we should check session of user
string session = DB.getUserSession(temp[1]);
if (session == temp[0])
{
Client newClient = null;
Client FindedClient = clients.Find(delegate(Client c) { return(c.Username == temp[1]); });
if (FindedClient == null)
{
//client with this username (temp[1]) not exist
newClient = new Client(ClientSocket, temp[1], temp[0]);
//now add new client to storage
clients.Add(newClient);
newClient.Start();
return(newClient);
}
else //client exist
{
//client exist with this username temp[1]
//now we should kill the last client
//but after it we should store his last tables that he sitted on
object rsvTables = FindedClient.reservedTables;
object sittedTables = FindedClient.sittedTables;
FindedClient.Kill();
clients.Remove(FindedClient);
//renew the Finded Client
newClient = new Client(ClientSocket, temp[1], temp[0]);
newClient.reservedTables = (List <string>)rsvTables; // set last rsv tables data here
newClient.sittedTables = (List <string>)sittedTables; //set last tables data here
clients.Add(newClient);
newClient.Start();
return(newClient);
}
}
}
//else
Client.Kill(ClientSocket);
}
catch (System.IO.IOException e)
{
ClientSocket.Close();
}
catch (System.ObjectDisposedException e)
{
Client.Kill(ClientSocket);
}
return(null);
}