This repository contains the python implementation of chat-server for final task.

cd server
python3 server.py

Requires python >= 3.5.

Server parameters can be configured in config.py

docker-compose up --build -d

Server starts in docker (with default parameters in config.py)

All commands to server should be packed:

<packed command length> + <command> 
[+ <packed argument length> + <argument>]
[+ ... ]

Exmaples:

users -> b'\x05\x00\x00\x00users'
register Bob -> b'\x08\x00\x00\x00register\x03\x00\x00\x00Bob'

Python example

Messages shouldn't be greater then 60 characters!

Messages format looks similar to commands format:

<packed receiver username length> + <receiver username> + <packed message length> + <message>

Example:

'Hello, Bob!' for user 'Bob' -> b'\x03\x00\x00\x00Bob\x0b\x00\x00\x00Hello, Bob!'

Python example

After each command you would receive message.

• register <username> - Registration on server. U can't use name of another user. Username shouldn't be greater then 8 symbols
• users - Get list of online users.
• send <formated message> - Message sending for specific user.
• sendall <message> - Message sending for all online users.
• receive - receive all messages that was sended for you. After this command all messages would be removed from server. Mesages are received in specific order:

  1) N = <messages count>
  2) Message 1
     .................................................
N+1) Message N

• logout - Logout your user. After logouting your profile and your messages would be removed.