ChatOnBaseSocket

The principle of operation:

1. Initialize WSA - WSAStartup()
2. Create a socket - socket()
3. Bind the socket - bind()
4. Listen on the socket - listen()
5. Accept a connection - accept()/connect()
6. Send and receive data - recv(), recvfrom/send(), sendto()
7. Disconnect - closesocket()

From abstraction to realization:

Preparing

Before you develop Windows Sockets programs within Visual Studio, you must include the ws2_32.lib library within your Project.

Create a new C++ Console Project and follow the steps belows:

• Select the Project menu
• Select the Properties (by default Alt+F7)
• In opened window in left menu select Linker
• In submenu select Input
• In main view select Additional Dependencies and Edit...
• In opened subwindow in input print ws2_32.lib and click OK
• Click Apply and then OK
• Done!

Tasks

Main

• Connect Client with Server

• Add args for cli (Command line)

• Client can send message with size more than bufferSize

• Client can send more than one message

• Server can respond on Client's message

• Server can accept and listen more than one Client

• Server can receive message from one Client and MAYBE send this message to others Clients

Additional

• Change splitting: vector -> char* (for optimize)
• Add maximum count of Clients
• Every Client must have unique username
• Add command /exit to leave chat
• Add command /private [username] to send private message
• Add formatted output (BETA)

Example

Server

IP ADDRESS: 127.0.0.1
PORT: 55555

The Winsock dll found!
The status: Running
socket() is OK!
bind() is OK!
Start listening on port: 55555
Accepted connection 1/10
Accepted connection 2/10
[2023-11-08 22:10:19] user2: hi, user1
[2023-11-08 22:10:32] user1: hello, user2
[2023-11-08 22:10:50] user1: how are u?
Client has terminated the connection
Client's socket was closed 1/10
Client has terminated the connection
Client's socket was closed 0/10

Client1

IP ADDRESS: 127.0.0.1
PORT: 55555

The Winsock dll found!
The status: Running
socket() is OK!
Client connect() is OK!
Enter your username (5-20 symbols): user1
[2023-11-08 22:10:19] user2: hi, user1
[2023-11-08 22:10:32] user1: hello, user2
[2023-11-08 22:10:50] user1: how are u?

...

user1 (YOU) > /exit
Client closed the connection.

Client1

IP ADDRESS: 127.0.0.1
PORT: 55555

The Winsock dll found!
The status: Running
socket() is OK!
Client connect() is OK!
Enter your username (5-20 symbols): user2
[2023-11-08 22:10:19] user2: hi, user1
[2023-11-08 22:10:32] user1: hello, user2
[2023-11-08 22:10:50] user1: how are u?

...

user1 (YOU) > /exit
Client closed the connection.

Interesting links for updates

• Formatting output