private void btnListen_Click(object sender, EventArgs e)
{
// Parse the server's IP address out of the TextBox
IPAddress ipAddr = IPAddress.Parse(txtIp.Text);
// Create a new instance of the ChatServer object
ChatServer mainServer = new ChatServer(ipAddr);
// Hook the StatusChanged event handler to mainServer_StatusChanged
ChatServer.StatusChanged += new StatusChangedEventHandler(mainServer_StatusChanged);
// Start listening for connections
mainServer.StartListening();
// Show that we started to listen for connections
txtLog.AppendText("Chờ người vào phòng ...\r\n");
btnListen.Enabled = false;
}
// Occures when a new client is accepted
private void AcceptClient()
{
srReceiver = new System.IO.StreamReader(tcpClient.GetStream());
swSender = new System.IO.StreamWriter(tcpClient.GetStream());
// Read the account information from the client
currUser = srReceiver.ReadLine();
// We got a response from the client
if (currUser != "")
{
// Store the user name in the hash table
if (ChatServer.htUsers.Contains(currUser) == true)
{
// 0 means not connected
swSender.WriteLine("0|Tên này đã tồn tại!");
swSender.Flush();
CloseConnection();
return;
}
else if (currUser == "Administrator")
{
// 0 means not connected
swSender.WriteLine("0|This username is reserved.");
swSender.Flush();
CloseConnection();
return;
}
else
{
// 1 means connected successfully
swSender.WriteLine("1");
swSender.Flush();
// Add the user to the hash tables and start listening for messages from him
ChatServer.AddUser(tcpClient, currUser);
}
}
else
{
CloseConnection();
return;
}
try
{
// Keep waiting for a message from the user
while ((strResponse = srReceiver.ReadLine()) != "")
{
// If it's invalid, remove the user
if (strResponse == null)
{
ChatServer.RemoveUser(tcpClient);
}
else
{
// Otherwise send the message to all the other users
ChatServer.SendMessage(currUser, strResponse);
}
}
}
catch
{
// If anything went wrong with this user, disconnect him
ChatServer.RemoveUser(tcpClient);
}
}