List <UserInstance> connectedUsers = new List <UserInstance>(); // TODO : later use DateBase instead
protected internal void ListenConnections()
{
server = new TcpListener(IPAddress.Any, 8080);
server.Start();
Console.WriteLine("Server is active. Waiting for connections...");
while (true)
{
var tcpClient = server.AcceptTcpClient();
var user = new UserInstance(tcpClient, this);
var userAuthorization = new UserAuthorization(user, user.toRegister);
if (UserConnectedToServer(user.userNickName))
{
AnswerToClient(user, false.ToString());
}
else
{
if (userAuthorization.successfullyVerified)
{
ConnectUser(user);
var clientThread = new Thread(new ThreadStart(user.BroadcastMessageToChat));
clientThread.Start();
}
AnswerToClient(user, userAuthorization.successfullyVerified.ToString());
}
}
}
void AnswerToClient(UserInstance userToWhomAnswer, string messageToAnswer)
{
try
{
byte[] writeBuffer = Encoding.Unicode.GetBytes(messageToAnswer);
userToWhomAnswer.dataTransferStream.Write(writeBuffer, 0, writeBuffer.Length);
}
catch (Exception) { Console.WriteLine("Could not answer to client."); }
}
protected internal void ConnectUser(UserInstance userToConnect)
{
connectedUsers.Add(userToConnect);
string messageAboutJoining = $"{DateTime.Now.ToShortTimeString()}" +
$" : {userToConnect.userNickName} connected to the server.";
// TODO : clause for server : user 'logged'/'registered' and then connected to the server
NotifyAllUsers(messageAboutJoining, userToConnect.userID);
NotifyServer(messageAboutJoining, ConsoleColor.Green);
}