// Server.cpp // Implementation of a simple chat server // Include necessary libraries #include #include #include #include #include #include #include // Define constants const int PORT = 8080; const int MAX_CONNECTIONS = 5; const int BUFFER_SIZE = 1024; int main() { // Create socket int server_socket = socket(AF_INET, SOCK_STREAM, 0); if (server_socket == -1) { std::cerr << "Error: Failed to create socket\n"; return 1; } // Bind socket to port sockaddr_in server_address; server_address.sin_family = AF_INET; server_address.sin_addr.s_addr = INADDR_ANY; server_address.sin_port = htons(PORT); if (bind(server_socket, (sockaddr*)&server_address, sizeof(server_address)) == -1) { std::cerr << "Error: Failed to bind socket to port\n"; close(server_socket); return 1; } // Listen for incoming connections if (listen(server_socket, MAX_CONNECTIONS) == -1) { std::cerr << "Error: Failed to listen for connections\n"; close(server_socket); return 1; } std::cout << "Server started, listening on port " << PORT << std::endl; // Accept incoming connections sockaddr_in client_address; socklen_t client_address_size = sizeof(client_address); int client_socket = accept(server_socket, (sockaddr*)&client_address, &client_address_size); if (client_socket == -1) { std::cerr << "Error: Failed to accept incoming connection\n"; close(server_socket); return 1; } // Handle communication with client char buffer[BUFFER_SIZE]; while (true) { memset(buffer, 0, BUFFER_SIZE); ssize_t bytes_received = recv(client_socket, buffer, BUFFER_SIZE, 0); if (bytes_received <= 0) { std::cerr << "Error: Connection closed by client\n"; break; } std::cout << "Received message from client: " << buffer << std::endl; // Echo message back to client send(client_socket, buffer, bytes_received, 0); } // Close sockets close(client_socket); close(server_socket); return 0; }

A Chat Server [ CPP ]