Server - implement nick collision detection

* Client: setNick checks for collisions.
* Command table: Nick Command is now replaying. 
* Connection: remove up on disconnect.

3 files changed, 16 insertions, 7 deletions

diff --git a/src/Server/Client.java b/src/Server/Client.java
index f7d015b..4ab36dd 100644
--- a/src/Server/Client.java
+++ b/src/Server/Client.java
@@ -28,10 +28,15 @@ public class Client
 	{
 		return this.nick;
 	}
-	/** changing the nick name */
-	public void setNick(String newNick)
+	/** set nick name if it does not exist. */
+	public boolean setNick(String newNick)
 	{
+		if (!ChatServer.server.addNick(newNick))
+		{
+			return false;
+		}
 		this.nick = newNick;
+		return true;
 	}
 	/** returning the host name */
 	public String getHostname()
diff --git a/src/Server/CommandsTable.java b/src/Server/CommandsTable.java
index d1d093c..e52eb7a 100644
--- a/src/Server/CommandsTable.java
+++ b/src/Server/CommandsTable.java
@@ -106,8 +106,13 @@ class CommandNick extends Command
 	public void run(Client client, String args)
 	{
 		String nick = args;
-		client.setNick(nick);
-		// FIXME: print reply
+		if (!client.setNick(nick))
+		{
+			this.println(client, "433 * " +  nick + " :Nick alredy in use.");
+		}
+		
+		
+		
 	}
 }
 
@@ -122,7 +127,7 @@ class CommandJoin extends Command
 		// but right now everybody is on a single channel
 		this.printUser(client, "JOIN " + ":" + args);
 		this.println(client, "332 " + client.getNick() + " " + args + " :Welcome to the single channel");
-		//this.println(client, "333 " + client.getNick()) + args + "someone!somewhere";
+		//
 	}
 }
 
@@ -133,7 +138,6 @@ class CommandUser extends Command
 	{
 		String[] argsArray = args.split("[ \t]+");
 		client.setUsername(argsArray[0]);
-		//client.setNick(args);
 		this.println(client, "001 " + client.getNick() + " :Welcome to Dor's ircd");
 	}
 }
diff --git a/src/Server/Connection.java b/src/Server/Connection.java
index 1102523..bcc3ac7 100644
--- a/src/Server/Connection.java
+++ b/src/Server/Connection.java
@@ -59,7 +59,7 @@ public class Connection extends Thread
 	{
 	
 		ChatServer.server.connectionRemove(this);
-	
+		ChatServer.server.removeNick(client.getNick());
 		try
 		{
 			if (!soc.isClosed())