Using websocket protocol to write a Mini Chat APP
brew install libwebsockets
make
./server_t
./client_t room_name will return the port_num you need to go
./client search Jan/11/2021 room_name (request chat records on that day). And this command will create a file search_Jan/11/2021.txt in current working directory.
./client search today room_name will give you current records named today.txt.

client_t and server_t implementation use BSD kqueue only support in MacOs and Linux should use epoll (not implemented).

Server side supports sqlite3 DataBase to store the chat record, if you want to check the record in one specific date, try the command above. Also note that server side is using LRU cache to save answer.

For open the client side, please visit http://localhost:port_num/?name= YOUR NAME. The owner will have the right to remove other users, once the owner logout session, the second order connection user will become the new owner.

server_t.txt record the port_num table_name (table_name = time + room_name). client_t.txt record the port_num room_name.

Current implementation deploys different ports for different room since this project is more intended about multi-processes, and alternative implementation will be new packet format with room name.