// 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\"This username already exists.");
swSender.Flush();
CloseConnection();
return;
}
else if (currUser == "Administrator")
{
// 0 means not connected
swSender.WriteLine("0\"This username is reserved.");
swSender.Flush();
CloseConnection();
return;
}
else if (currUser.IndexOf("\"") >= 0)
{
// 0 means not connected
swSender.WriteLine("0\"The character \" is not allowed.");
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
{
Thread.Sleep(2000);
String[] allUsers = new String[ChatServer.htConnections.Count];
ChatServer.htConnections.Values.CopyTo(allUsers, 0);
string addUserRequest = "\"2";
for (int i = 0; i < allUsers.Length; i++)
{
// Try sending a message to each
try
{
// If the message is blank or the connection is null, break out
if (tcpClient == null || allUsers[i] == currUser)
{
continue;
}
// Send the message to the current user in the loop
addUserRequest += "\"" + allUsers[i];
}
catch // If there was a problem, the user is not there anymore, remove him
{
ChatServer.RemoveUser(tcpClient);
}
}
swSender.WriteLine(addUserRequest);
swSender.Flush();
// Keep waiting for a message from the user
while (ChatServer.ServRunning && tcpClient.Connected)
{
if (tcpClient.Available > 0)
{
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
String[] tokens = strResponse.Split('\"');
switch (tokens[0])
{
case "":
switch (tokens[1])
{
case "1":
ChatServer.SendBroadcastMessage("\"1\"" + currUser + ": " + tokens[2]);
break;
case "3":
ChatServer.RemoveUser(tcpClient);
return;
}
break;
default:
switch (tokens[1])
{
case "1":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"1\"" + tokens[2]);
break;
case "4":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"4\"" + tokens[2] + "\"" + tokens[3] + "\"" + tokens[4] + "\"" + tokens[5] + "\"" + tokens[6]);
break;
case "5":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"5\"" + tokens[2] + "\"" + tokens[3] + "\"" + tokens[4]);
break;
case "7":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"7");
break;
case "o":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"o\"" + tokens[2] + "\"" + tokens[3] + "\"" + tokens[4] + "\"" + tokens[5]);
break;
case "O":
ChatServer.SendPrivateMessage(currUser, tokens[0], currUser + "\"O\"" + tokens[2] + "\"" + tokens[3] + "\"" + tokens[4]);
break;
}
break;
}
}
}
else
{
Thread.Sleep(50);
}
}
}
catch
{
// If anything went wrong with this user, disconnect him
}
ChatServer.RemoveUser(tcpClient);
try
{
tcpClient.Close();
}
catch { }
}