Build/Compile $ make

Run server $ sudo java Server // (under bin/)

Run client $ java Client // (under bin/)

Functions Implemented

1. Username validity check

   • No space allowed in username
   • Already-taken username cannot be taken again by another client

2. Private messaging in a channel

   • so called $ /tell [username] command

3. Ignore/Unignore user message

   • so called $ /ignore [username] & $ /unignore [username] commands

4. Listing currently online users

   • Listing all users in the room (so called $ /listall command)
   • List all users in a specific channel (so called $ /list [channelname] command

5. Logout

   • so called $ /quit command
   • Abnormal disconnect is also tolerated

6. Multi-channel Support (so called $ /join [channelname] command)

   • Users can create channel if it does not exist
   • Users can join channel if it does exist
   • If a channel does not have user, it will be destroyed

7. Server side debug messages

   • A user join the chatroom system : [user] login from [IP] @ [time]
   • A user leave the chatroom system : [user] logout @ [time]
   • A channel is created : channel [channel] is created by [user] @ [time]
   • A channel is destroyed : channel [channel] is destroyed by [user] @ [time]