public static void Main(string[] args)
{
chatrooms = new List<Chatroom> ();
users = new List<User> ();
Console.WriteLine ("Please enter the port for the server: ");
string port = Console.ReadLine ();
TcpListener serverSocket = new TcpListener (IPAddress.Loopback, Convert.ToInt32 (port));
try {
serverSocket.Start ();
Console.WriteLine (String.Format ("[Server started on 127.0.0.1 {0}]", port));
} catch {
Console.WriteLine ("[Server failed to start]");
return;
}
int clientIds = 1;
// create a new client when a new connection comes in, and create user entry for that client connection
while (true)
{
TcpClient client = serverSocket.AcceptTcpClient ();
User user = new User (client, clientIds);
users.Add (user);
clientIds++;
Thread t = new Thread (new ParameterizedThreadStart (HandleClient));
t.Start (user);
}
}
/// <summary>
/// Add a message to the chatroom, and send it to all users
/// </summary>
/// <param name="s">S: the message to be added to the chatroom</param>
public void AddMessage(User u, string s)
{
StreamWriter w = new StreamWriter (u.Client.GetStream (), Encoding.ASCII);
// if the user is not actually in this chatroom, they can't add a message to it
if (!Users.Contains(u)) {
w.WriteLine (" warning: cannot send message, you must join a chatroom to send a message");
w.Flush ();
return;
}
String message = String.Format ("[{0}] <{1}> {2}", this.Name, u.Name, s);
Messages.Add(message);
Date = DateTime.Now;
foreach (User r in Users)
{
if (r.Id == u.Id)
{
continue;
}
w = new StreamWriter (r.Client.GetStream (), Encoding.ASCII);
w.WriteLine (message);
w.Flush ();
}
}
/// <summary>
/// Sends a message to the specified chatroom
/// </summary>
/// <param name="user">User.</param>
/// <param name="chatroom">Chatroom.</param>
/// <param name="message">Message.</param>
private static void SendMessage(User user, string chatroom, string message)
{
chatroom = chatroom.Substring (2);
try
{
Chatroom c = chatrooms.First (r => r.Name.CompareTo (chatroom) == 0) as Chatroom;
c.AddMessage(user, message);
}
catch
{
StreamWriter w = new StreamWriter (user.Client.GetStream (), Encoding.ASCII);
w.WriteLine (" error: cannot send message, the specified chatroom cannot be found");
w.Flush ();
}
}
/// <summary>
/// Remove the specified user from the specified chatroom
/// </summary>
/// <param name="user">User.</param>
/// <param name="chatroom">Chatroom.</param>
private static void LeaveChatroom(User user, string chatroom)
{
StreamWriter w = new StreamWriter (user.Client.GetStream (), Encoding.ASCII);
try
{
Chatroom c = chatrooms.First (r => r.Name.CompareTo (chatroom) == 0) as Chatroom;
c.LeaveChatroom(user);
}
catch
{
w.WriteLine (" error: cannot leave chatroom, the specified chatroom cannot be found");
w.Flush ();
}
}
/// <summary>
/// Add the specified user to the list of users currently in this chatroom
/// </summary>
/// <param name="u">U.</param>
public void JoinChatroom(User u)
{
StreamWriter w = new StreamWriter (u.Client.GetStream (), Encoding.ASCII);
// if the user is actually in this chatroom, don't re-add them
if (Users.Contains(u)) {
return;
}
Users.Add (u);
w.WriteLine (String.Format (" [{0}] joined", this.Name));
w.Flush ();
foreach (string s in Messages) {
w.WriteLine (s);
w.Flush ();
}
}
/// <summary>
/// Remove the specified user from the list of users
/// </summary>
/// <param name="u">U.</param>
public void LeaveChatroom(User u)
{
// if the user is not actually in this chatroom, we don't have to do anything
if (!Users.Contains(u)) {
return;
}
Users.Remove (u);
StreamWriter w = new StreamWriter (u.Client.GetStream (), Encoding.ASCII);
w.WriteLine (String.Format (" [{0}] left", this.Name));
w.Flush ();
}
