gistfile1.txt

#include <iostream>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>

int main() {
    int server_fd = socket(AF_INET, SOCK_STREAM, 0);

    sockaddr_in address{};
    address.sin_family = AF_INET;
    address.sin_port = htons(8080);
    address.sin_addr.s_addr = INADDR_ANY;

    bind(server_fd, (sockaddr*)&address, sizeof(address));
    listen(server_fd, 1);

    std::cout << "Waiting for client...\n";

    socklen_t addrlen = sizeof(address);
    int client_socket = accept(server_fd, (sockaddr*)&address, &addrlen);

    int number;

    while (true) {
        int bytes = recv(client_socket, &number, sizeof(number), 0);
        if (bytes <= 0) break;

        std::cout << "Received: " << number << std::endl;

        int response = number + 1;
        send(client_socket, &response, sizeof(response), 0);
    }

    close(client_socket);
    close(server_fd);
}



#include <iostream>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

int main() {
    int sock = socket(AF_INET, SOCK_STREAM, 0);

    sockaddr_in server{};
    server.sin_family = AF_INET;
    server.sin_port = htons(8080);
    inet_pton(AF_INET, "127.0.0.1", &server.sin_addr);

    connect(sock, (sockaddr*)&server, sizeof(server));

    while (true) {
        int number;
        std::cout << "Enter number: ";
        std::cin >> number;

        send(sock, &number, sizeof(number), 0);

        int response;
        recv(sock, &response, sizeof(response), 0);

        std::cout << "Server response: " << response << std::endl;
    }

    close(sock);
}

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