Kirstein Julien & Merel Ludovic

Hello, to use our application, it is necessary to:

1. Run the application with "server" as argument in a command prompt.
2. Run the application with "client" as argument in another command prompt.

In the client part, u can use two commands to communicate with the server:

1. /clients : the server will give you all users logged in with their ip adress.
2. /exit : you will be disconnected from the server.

In the same part, u can use commands for communicate with another client:

1. /join [ip] : Allows you to connect you to another client with its ip address.
2. /send [message] : Sends a message to the person.
3. /quit : Cuts the connection

Communication protocol server-client/client-server: The communication is a TCP.

1. Data frame server-client: The server sends the data frame "server message" on the port 5001 of the client.
2. Client-server: The client sends a message on the port 5000 of the server.

Communication protocol client-client: The communication is UDP. When a client sends a message, the data frame is :

• The number of characters in the user, plus
• the user, plus
• The numbers of characters in the message, plus
• The message