(PWŚS) UDP - Serwer

#include <stdio.h>
#include "stdafx.h"
#include <locale.h>
#include <WinSock2.h>
#include <conio.h>

#pragma comment(lib, "Ws2_32.lib")

void CheckErrorByCode(int code)
{

    char Buff[1024];
    FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, code, NULL, Buff, sizeof(Buff), NULL);
    printf(" %s", Buff);

}

int main(int argc, char** argv) {
    setlocale(LC_ALL, "Polish");


    WSADATA wsa;
    SOCKADDR_IN addr;
    addr.sin_family = AF_INET;
    addr.sin_port = htons(19390);
    addr.sin_addr.s_addr = inet_addr("127.0.0.1");


    char BuffToSend2[] = "Editable";
    char BuffToShow2[2048];
    char Host[512];

    int result = WSAStartup(MAKEWORD(2, 0), &wsa);

    if (result != 1)
    {
        printf("WSAStartup initialization: ");
        CheckErrorByCode(result);
    }
    else
    {
        printf("WSAStartup initialization error! Error code: %d", result);
        CheckErrorByCode(result);
    }

    result = gethostname(Host, sizeof(Host));

    if (result == 1)
    {
        printf("Get hostname function error! Error code: %d", result);
        CheckErrorByCode(result);
    }



    SOCKET Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    bind(Socket, (SOCKADDR*)&addr, sizeof(addr));


    for (int i = 0; i < 2048; i++)
    {
        BuffToShow2[i] = NULL;
    }

    int AddrSize = sizeof(addr);
    recvfrom(Socket, BuffToShow2, sizeof(BuffToShow2), 0, (SOCKADDR*)&addr, &AddrSize);

    int len = strlen(BuffToShow2);

    strncat(BuffToSend2,BuffToShow2,strlen(BuffToShow2));

    sendto(Socket, BuffToSend2, strlen(BuffToSend2), 0, (SOCKADDR*)&addr, sizeof(addr));

    closesocket(Socket);
    _getch();
    return 0;
}