SimpleChatroom

Network course Client-Server based chat application project.

I used from Java and JavaFX to implement it and used some extra libraries :

JavaFX Material Design Library : JFoenix

Logging Library : log4j

Minimum required java is: java 8

You can :

• Send a text message (Public or Private)

• Send a file (Public or Private)

• See online users (Realtime)

Running

ClientRunner.java in Client package is the Client Main function.

ServerRunner.java in Server package is the Server Main function.

By default, (For message passing) the server listens on port 15000 with 100 client capacity

Server's file downloader socket listens on 15001

Client's file downloader socket listens on 15002

You can also change the server default port and its capacity using command-line arguments :

java ServerRunner [PORT_NUMBER] [CAPACITY]

Server file downloader and client file downloader sockets ports will change based on this new value:

SERVER FILE DOWNLOADER PORT = PORT_NUMBER + 1

CLIENT FILE DOWNLOADER PORT = PORT_NUMBER + 2

To communicate between a client and server to each other I used some message with specific format (protocol), you can see this list below (And some additional response codes):

MESSAGES

• Client to Server Messages :

  • Public Message :

    Public message, length=<CharCount>
    <Message>

  • Private Message :

    Private message, length=<CharCount> to <User1>,<User2>
    <Message>

  • Private File Sending Message :

    PFile message, name<FileName>, length<Byte>, <User1>, <User2>

  • Public File Sending Message :

    File message, name<FileName>, length<Byte>

  • Download Request Message :

    Download, FileName, <PrivateMessageSender>

  • HandShake Message :

    Hello<User>

  • Logout Request :

    Bye.

  • Requesting Online Users :

    Please send the list of attendees.

• Server to Client Messages:

  • Public Message :

        Public message, length=<CharCount> from <User3>
        <Message>

  • Private Message :

       Private message, length=<CharCount> from <User3> to <User1>,<User2>
       <Message>

  • Private File Sending Message :

        PFile message, from<User3>, name<FileName>, length<Byte>, <User1>, <User2>

  • Public File Sending Message :

       File message, from<User3>, name<FileName>, length<Byte>

  • User logout :

        Server, 301, User left the chat room.

  • Welcome :

        Server, 201, Hi User, welcome to the chat room.

  • User Join Public Message :

        User join the chat room.

List of Status Messages

• SENDING_PRIVATE_MESSAGE_WAS_SUCCESSFUL = 200
• HANDSHAKE_ACCEPTED = 201
• LIST_PASSED = 202
• READY_TO_GET_FILE = 203
• LOG_OUT = 301
• USER_LOGOUT = 302
• HANDSHAKE_REJECTED = 400
• FILE_UPLOADING_REJECTED = 401
• FILE_DOWNLOADING_REJECTED = 402
• SENDING_PRIVATE_MESSAGE_WAS_NOT_SUCCESSFUL = 403
• FILE_REMOVED = 404
• SERVER_ERROR = 500

Demo

Main Page Window

Failed to log in

TODO

• Fix Multiuser private file sending bug

• Adding more accurate username validation in both server and client-side

• Adding progress bar for downloading and uploading process

• Changing file size format message to a readable one (KB, MB or GB)

• Using Gradle for building the project (Handling dependencies)

• Making jar file for both client and server application