[PWŚS] PACKET_INITIALIZE

#pragma comment(lib,"Ws2_32.lib");
#include <windows.h>
#include <string>
#include <iostream>

using namespace std;

struct PACKET_INITIALIZE
{
    PACKET_INITIALIZE(unsigned int code, int reserved1, int reserved2) :
        Code(code),
        Reserved1(reserved1),
        Reserved2(reserved2) {}
        unsigned int Code;
        int Reserved1;
        int Reserved2;
};

struct PACKET_TEXTFRAGMENT
{
    PACKET_TEXTFRAGMENT(unsigned int code, unsigned int textlen, signed int charoffset) :
        Code(code),
        TextLen(textlen),
        CharOffset(charoffset) {}
        unsigned int Code;
        unsigned int TextLen;
        signed int CharOffset;
};

int main()
{
    WSADATA info;
    if (WSAStartup(MAKEWORD(2, 0), &info) != 0)
    {
        cout << "WinSock Error\n";
    }

    SOCKET gniazdo = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    sockaddr_in serwer;
    serwer.sin_family = AF_INET;
    serwer.sin_addr.s_addr = inet_addr("192.168.0.46");
    serwer.sin_port = htons(5000);

    connect(gniazdo, (sockaddr*)&serwer, sizeof(serwer));

    //-------- cala zabawa zaczyna sie tutaj
    PACKET_INITIALIZE start(0x12345678, 0, 0);
    PACKET_TEXTFRAGMENT msg(0x23456789, 0, 0);
    string buf;
    char odebrana[100];
    int liczba;
    int odebrane;

    send(gniazdo, (char*)&start, sizeof(start), 0);
    recv(gniazdo, (char*)&start, sizeof(start), 0);

    if (start.Code == 1)
    {
        do
        {
            cout << "Podaj tekst do szyfrowania/deszyfrowania : ";
            getline(cin, buf);
            if (buf == "") break;
            do
            {
                cout << "Wprowadz przesuniecie <-20,20> : ";
                cin >> liczba;                  getchar();
            } while ((liczba<-20) || (liczba>20));

            msg.Code = 0x23456789;
            msg.TextLen = buf.length();
            msg.CharOffset = liczba;

            send(gniazdo, (char*)&msg, sizeof(msg), 0);
            send(gniazdo, buf.c_str(), buf.length(), 0);

            recv(gniazdo, (char*)&msg, sizeof(msg), 0);
            if (msg.Code == 1)
            {
                odebrane = recv(gniazdo, odebrana, buf.length(), 0);
                odebrana[odebrane] = 0;
                cout << "Otrzymana odpowiedz: " << odebrane << endl;
            }
            else cout << "Brak odpowiedzi" << endl;
            cout << "--------------------------------------------------------------";
        } while (true);
    }
    else cout << "Serwer nie wyrazil zgody na polaczenie!\n";

    //-------- tutaj sie konczy, reszta to klasyk
    shutdown(gniazdo, 2);   closesocket(gniazdo);
    WSACleanup();

    return 0;
}