mercy_smile

int main() {
    const char* endl = "\r\n";
    WSADATA wsa;

    std::string domin;
    int status;
    std::string write_data;

    struct addrinfo hints = { 0 }, * res, * p;
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;

    SetConsoleCP(GetACP());
    SetConsoleOutputCP(GetACP());

    if (status = WSAStartup(MAKEWORD(2, 2), &wsa) != 0) {
        std::cout << "Error: of WSAStatus: " << gai_strerror(status) << std::endl;
        return status;
    }

    std::cout << "Enter domin: " << std::endl;
    std::getline(std::cin, domin);

    if (status = getaddrinfo(domin.c_str(), "80", &hints, &res) != 0) {
        std::cout << ("Error: of getaddrinfo", gai_strerror(status));
        return status;
    };

    {
        std::ostringstream ws;

        ws << "GET / HTTP/1.1" << endl;
        ws << "Host: " << domin << endl;
        ws << "Accept: text/html, text/*" << endl;
        ws << "Connection: close" << endl;
        ws << endl;

        write_data = ws.str();
    }

    std::cout << write_data;

    char ipstr[1024];
    int s = INVALID_SOCKET;

    char bufrecv[2048];

    for (p = res; p != NULL; p = p->ai_next) {
        const char* ipver;
        void* addr;
        if (p->ai_family == AF_INET) {
            struct sockaddr_in* ipv4 = (struct sockaddr_in*)p->ai_addr;
            addr = &(ipv4->sin_addr);
            ipver = "IPv4: ";
        }
        else {
            struct sockaddr_in6* ipv6 = (struct sockaddr_in6*)p->ai_addr;
            addr = &(ipv6->sin6_addr);
            ipver = "IPv6: ";
        }

        inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
        std::cout << "addres: " << ipver << ipstr << std::endl;

        if (s != INVALID_SOCKET) {
            shutdown(s, SD_BOTH);
            closesocket(s);
        }

        if (((s = socket(p->ai_family, p->ai_socktype, p->ai_protocol))) == INVALID_SOCKET) {
            std::cout << "error of socket: " << WSAGetLastError() << std::endl;
            continue;
        }

        if ((connect(s, p->ai_addr, p->ai_addrlen)) == SOCKET_ERROR) {
            std::cout << "Error of connect: " << WSAGetLastError() << std::endl;
            continue;
        }

        bool success = true;
        int writed = 0;
        for (size_t i = 0, data_len = write_data.length(); i < data_len; i += writed) {
            writed = send(s, write_data.c_str() + i, (int)min(data_len - i, INT_MAX), 0);
            if (writed == SOCKET_ERROR) {
                std::cout << "Error of send: " << WSAGetLastError() << std::endl;
                success = false;
                break;
            }
        }
        if (success) {
            int readed;

            while ((readed = recv(s, bufrecv, sizeof(bufrecv), 0)) != SOCKET_ERROR && readed != 0) {
                std::cout << std::string(bufrecv, readed);
            }
            if (readed == SOCKET_ERROR) {
                std::cout << " recv " << WSAGetLastError() << std::endl;
            }
            break;
        }
    }

    if (s != INVALID_SOCKET)
    {
        shutdown(s, SD_BOTH);
        closesocket(s);
    }

    freeaddrinfo(res);
    WSACleanup();
    system("pause");
    return 0;
}

#pragma comment (lib,"Ws2_32.lib")
#include <winsock2.h>
#include <WS2tcpip.h>
#include <Windows.h>
#include <iostream>
#include <string>

int main() {
    WSADATA wsa;
    std::string domain;
    int status;
    struct addrinfo hints = { 0 }, * res, * p;
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;

    // ошибки выводятся в ANSI кодировке, а консоль по умолчанию в OEM
    SetConsoleCP(GetACP());
    SetConsoleOutputCP(GetACP());

    // На Windows необходима инициализация сетевой библиотеки
    if (status = WSAStartup(MAKEWORD(2, 2), &wsa) != 0) {
        std::cout << "Error: of getaddrinfo: " << get_error_message(status) << std::endl;
        // принято возвращать причину ошибки, а не только сам факт
        return status;
    }
    std::cout << ("Enter domain: ");
    // даже доменные имена могут иметь длину 256 символов
    // пользователь же может вообще ввести сколько ему угодно
    std::getline(std::cin, domain);

    if (status = getaddrinfo(domain.c_str(), "80", &hints, &res) != 0) {
        std::cout << "Error: of getaddrinfo: " << get_error_message(status) << std::endl;
        return status;
    };

    char ipstr[INET6_ADDRSTRLEN];

    for (p = res; p != NULL; p = p->ai_next) {
        /*const char* ipver;*/
        void* addr;
        if (p->ai_family == AF_INET) {
            struct sockaddr_in* ipv4 = (struct sockaddr_in*)p->ai_addr;
            addr = &(ipv4->sin_addr);
            /*ipver = "IPv4:";*/
        }
        else {
            struct sockaddr_in6* ipv6 = (struct sockaddr_in6*)p->ai_addr;
            addr = &(ipv6->sin6_addr);
            /*ipver = "IPv6:";*/
        }
        inet_ntop(p->ai_family, addr, ipstr, sizeof(ipstr));
        std::cout << "addres: " << ipstr << std::endl;
    };
    freeaddrinfo(res);
    system("pause");
    // деструктор сетевой библиотеки
    WSACleanup();
    return 0;
}

#include <filesystem>
int main()
{
	std::string file_path = "CP.mp4";
	std::string path = "xxx/CP.mp4";

	std::filesystem::copy_file(file_path, path);
	return 0;
}