Networks Messaging Program

A simple chat messaging program using UNIX TCP sockets across a local network with several features.

Usage

1. Compile the respective programs. For e.g., using gcc:
   gcc deliver.c -lpthread -o deliver and gcc server.c -lpthread -o server
   Ensure to compile using threads
2. Get the current local IP . For e.g., using curl:
   curl ifconfig.me
3. Run the compiled deliver and server programs on the same network
   Use the following syntax to run the programs: deliver and server <port number>
4. Login through deliver
   You can use these logins provided in server.c

User	Password
Yash	000
James	123
jim	456
bob	789

5. Use the login command with the following syntax:
   /login <User> <Password> <local IP/server address> <port>
   The server does not need any login and should be already running (see step 3)
6. Multiple users may connect to the same server (repeat steps 3 for deliver)

Features

• Server registers new users to a database and assigns a unique ID
• Server maintains a database of IDs and passwords for login
• When a client logs in, a bind is created between the client and the server until the client disconnects
• Client to client communication is passed through the server
• Server manages input and distribution of chat messages
• Special commands and room creation
• Server tracks created rooms and allocation of users in each room
• Invite users to rooms with an invite
• Change the colour of your name
• Console colours for ease of differentiating unique types of messages
• Multiple receive threads initiated as needed

List of valid commands: 
 /help 
 /createsession <roomname> 
 /joinsession <roomname> 
 /leavesession <roomname> 
 /leaveallsessions 
 /quit 
 /logout 
 /list 
 /colour <red, green, yellow, blue, purple, cyan, white> 
 /time 
 /invite <name> <roomname>

Images

An example of a text conference between 2 clients