Requetes serveur cs 1.6

En fait, j'essaye d'envoyer des requêtes sur mon serveur cs mais je n'obtiens aucun retour.
Voilà le code si quelqu'un peu m'aider svp

#include <windows.h>
#include <winsock2.h> // -lwsock32

int main()
{
  SOCKET Socket;
  SOCKADDR_IN Sin;
  WSADATA WSAData;
 
  char Buffer_Send[1024];
  char Buffer_Recv[1024];
 
  if (WSAStartup(MAKEWORD(2, 2), &WSAData) != 0) {
    MessageBox(0, "WSAStartup()", "Error", MB_ICONEXCLAMATION);
    return 0;
    }
  printf("~ WSAStartup...\n");
 
  if ((Socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
    MessageBox(0, "socket()", "Error", MB_ICONEXCLAMATION);
    return 0;
    }
  printf("~ socket...\n");
 
  ZeroMemory(&Sin, sizeof(SOCKADDR_IN));
  Sin.sin_addr.s_addr = inet_addr("77.111.196.33");
  Sin.sin_family = AF_INET;
  Sin.sin_port = htons(27015);
 
  if (connect(Socket, (SOCKADDR *)&Sin, sizeof(Sin)) != 0) {
    MessageBox(0, "connect()", "Error", MB_ICONEXCLAMATION);
    return 0;
    }
  printf("~ connect...\n");
 
  wsprintf(Buffer_Send, "%c%c%c%cplayers\0", 255, 255, 255, 255);
  if (sendto(Socket, Buffer_Send, strlen(Buffer_Send), 0, (SOCKADDR *)&Sin, sizeof(Sin)) == SOCKET_ERROR) {
    MessageBox(0, "sendto()", "Error", MB_ICONEXCLAMATION);
    return 0;
    }
  printf("~ send... %s\n", Buffer_Send);
 
  int Recv_Size;
  int Sin_Size = sizeof(Sin);
  if ((Recv_Size = recvfrom(Socket, Buffer_Recv, sizeof(Buffer_Recv), 0, (SOCKADDR *)&Sin, &Sin_Size)) == SOCKET_ERROR) {
    MessageBox(0, "recvfrom()", "Error", MB_ICONEXCLAMATION);
    return 0;
    }
  printf("~ recv... %s\n", Buffer_Recv);
 
  closesocket(Socket);
  WSACleanup();
  system("pause");
  return 0;
}