C++ Http Post Request - Versione stampabile

Codice:
#include <iostream>

#include <WinSock2.h>

#include <string>



#pragma comment(lib, "ws2_32.lib")



std::string integer_to_string(int n)

{

    static char buffer[32+1];

    _itoa_s(n,buffer,32,10);

    return std::string(buffer);

}



std::string GetHostByUrl(char *url)

{

    struct hostent *Hostent = gethostbyname(url);

    char Host[20];

    sprintf (Host, "%d.%d.%d.%d",

            (unsigned __int8)Hostent->h_addr_list[0][0],

            (unsigned __int8)Hostent->h_addr_list[0][1],

            (unsigned __int8)Hostent->h_addr_list[0][2],

            (unsigned __int8)Hostent->h_addr_list[0][3]);

    return Host;

}



SOCKADDR_IN post_addr(char *url)

{

    SOCKADDR_IN post_addr;

    post_addr.sin_family = AF_INET;

    post_addr.sin_port = htons(80);

    post_addr.sin_addr.s_addr = inet_addr(GetHostByUrl(url).c_str());

    return post_addr;

}



void _SendHttpPostRequest(SOCKET sock, std::string str) { send(sock, str.c_str(), str.size(), 0); }



void SendHttpPostRequest(SOCKET sock, std::string url, std::string page, std::string data)

{

    _SendHttpPostRequest(sock, "POST " + page + " HTTP/1.1\r\n");

    _SendHttpPostRequest(sock, "Host: " + url + "\r\n");

    _SendHttpPostRequest(sock, "User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0.1\r\n");

    _SendHttpPostRequest(sock, "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");

    _SendHttpPostRequest(sock, "Accept-Language: ru-ru,ru;q=0.8,en-us;q=0.5,en;q=0.3\r\n");

    _SendHttpPostRequest(sock, "Accept-Encoding: gzip, deflate\r\n");

    _SendHttpPostRequest(sock, "Connection: keep-alive\r\n");

    _SendHttpPostRequest(sock, "Referer: http://" + url + "/\r\n");

    _SendHttpPostRequest(sock, "X-MailRuSputnik: generic\r\n");

    _SendHttpPostRequest(sock, "Content-Type: application/x-www-form-urlencoded\r\n");

    _SendHttpPostRequest(sock, "Content-Length: " + integer_to_string(data.size()) + "\r\n");

    _SendHttpPostRequest(sock, "\r\n");

    _SendHttpPostRequest(sock, data);

}



int main()

{

    WSADATA wsa;

    if(WSAStartup(MAKEWORD(2, 1), &wsa))

    {

        std::cout << "WSAStartup() error" << std::endl;

        getchar();

        return 1;

    }



    SOCKET sock = socket(AF_INET, SOCK_STREAM, 0);

    SOCKADDR_IN Post_addr = post_addr("www.extremedoor.org");



    if(connect(sock, (SOCKADDR*)&Post_addr, sizeof(Post_addr)) == SOCKET_ERROR)

    {

        closesocket(sock);

        std::cout << "connect() error" << std::endl;

        getchar();

        return INVALID_SOCKET;

    }



    SendHttpPostRequest(sock, "extremedoor.org", "/post_example.php", "key=123");



    char response[4096 + 1];

    recv(sock, response, 4096, 0);

    response[strlen(response) - 1] = 0;

    std::cout << response << std::endl;



    getchar();

    return 0;

}