private void startChat()
{
//create our StreamReader object to read the current stream
reader = new System.IO.StreamReader(client.GetStream());
//create our StreamWriter objec to write to the current stream
writer = new System.IO.StreamWriter(client.GetStream());
writer.WriteLine("Welcome to PCChat!");
//retrieve the users nickname they provided
nickName = GetNick();
//check is the nickname is already in session
//prompt the user until they provide a nickname not in use
while (ChatServer.nickName.Contains(nickName))
{
//since the nickname is in use we display that message,
//then prompt them again for a nickname
writer.WriteLine("ERROR - Nickname already exists! Please try a new one");
nickName = GetNick();
}
//add their nickname to the chat server
ChatServer.nickName.Add(nickName, client);
ChatServer.nickNameByConnect.Add(client, nickName);
//send a system message letting the other user
//know that a new user has joined the chat
ChatServer.SendSystemMessage("** " + nickName + " ** Has joined the room");
writer.WriteLine("Now Talking.....\r\n-------------------------------");
//ensure the buffer is empty
writer.Flush();
//create a new thread for this user
Thread chatThread = new Thread(new ThreadStart(runChat));
//start the thread
chatThread.Start();
}
public static void SendMsgToAll(string nick, string msg)
{
//create a StreamWriter Object
StreamWriter writer;
ArrayList ToRemove = new ArrayList(0);
//create a new TCPClient Array
Chat.Sockets.TcpClient[] tcpClient = new Chat.Sockets.TcpClient[ChatServer.nickName.Count];
//copy the users nickname to the CHatServer values
ChatServer.nickName.Values.CopyTo(tcpClient, 0);
//loop through and write any messages to the window
for (int cnt = 0; cnt < tcpClient.Length; cnt++)
{
try
{
//check if the message is empty, of the particular
//index of out array is null, if it is then continue
if (msg.Trim() == "" || tcpClient[cnt] == null)
{
continue;
}
//Use the GetStream method to get the current memory
//stream for this index of our TCPClient array
writer = new StreamWriter(tcpClient[cnt].GetStream());
//white our message to the window
writer.WriteLine(nick + ": " + msg);
//make sure all bytes are written
writer.Flush();
//dispose of the writer object until needed again
writer = null;
}
//here we catch an exception that happens
//when the user leaves the chatroow
catch (Exception e44)
{
e44 = e44;
string str = (string)ChatServer.nickNameByConnect[tcpClient[cnt]];
//send the message that the user has left
ChatServer.SendSystemMessage("** " + str + " ** Has Left The Room.");
//remove the nickname from the list
ChatServer.nickName.Remove(str);
//remove that index of the array, thus freeing it up
//for another user
ChatServer.nickNameByConnect.Remove(tcpClient[cnt]);
}
}
}
