ChatServer: dict of nicks.

* add \ remove nicks.

1 files changed, 24 insertions, 14 deletions

diff --git a/src/Server/ChatServer.java b/src/Server/ChatServer.java
index 4705730..363a747 100644
--- a/src/Server/ChatServer.java
+++ b/src/Server/ChatServer.java
@@ -1,6 +1,7 @@
 package Server;
 import java.net.*;
 import java.io.*;
+import java.util.Hashtable;
 import java.util.LinkedList;
 import java.util.Iterator;
 
@@ -8,6 +9,7 @@ public class ChatServer
 {
 	private ServerSocket service;
 	private LinkedList<Connection> connections;
+	private Hashtable <String, Boolean> nicks; 
 	
 	public static final int portNum = 6667;
 	public static ChatServer server;
@@ -25,7 +27,29 @@ public class ChatServer
 	ChatServer() throws IOException {
 		this.service = new ServerSocket(portNum);
 		this.connections = new LinkedList<Connection>();
+		this.nicks = new Hashtable <String, Boolean>();
 	}
+	
+	/** check if nick already used. if not add it.
+	 * @param nick */
+	public boolean addNick (String nick)
+	{
+		if (this.nicks.get(nick) != null)
+		{
+			return false;
+		}
+		
+		this.nicks.put(nick, true); // this value (true) has no meaning.
+		return true;
+	}
+	
+	/** remove nick which is no longer in use.
+	 * @param nick  */
+	public void removeNick (String nick)
+	{
+		this.nicks.remove(nick);
+	}
+	
 	/** Listening to port and opening a socket */
 	public static void main(String[] args) throws IOException
 	{
@@ -55,17 +79,3 @@ public class ChatServer
 
 	}
 }
-
-/** Tasks
- *
- * * Allow listening on a different port (from command-line?)
- * * Have a test server running on cohens.org.il
- * * Send requests to all clients (use list)
- *   - When a client disconnects - remove it from connections list.
- *   - temporary: When we get a PRIVMSG, iterate over connections and write message and every client
- *   - When we get a PRIVMSG, iterate over connections and write the message to each client
- * * Don't allow two clients with the same nick
- * * When passing a message (PRIVMSG) - include the sender's nick.
- * * Keep channels up: PING occasionally
- * * Graphical interface for server
- */