size_t RemoteFB__INET_Socket::Helper__Socket_Recv(size_t const cb,
                                                  void*  const pv)
{
 assert(cb>0);
 assert(pv!=nullptr);

 CHECK_WRITE_PTR(pv,cb);

 const int icb=structure::can_numeric_cast<int>(cb)
                 ?static_cast<int>(cb)
                 :structure::t_numeric_limits<int>::max_value();

 assert(icb>0);
 assert(size_t(icb)<=cb);

 const int n=m_spProvider->m_recv.point()
              (m_hSocket,
               reinterpret_cast<char*>(pv),
               icb,
               RemoteFB__INET_StaticCfg::c_FB_RECV_FLAGS);

 if(n==SOCKET_ERROR)
 {
  const int winsockErr=m_spProvider->m_WSAGetLastError.point()();

  //! \todo
  //!  Process interupt error?

  // ERROR - failed to read from INET port
  t_ibp_error exc(E_FAIL,
                  ibp_mce_winsock__failed_to_read_from_port_1,
                  IBP_CreateCustomErrorFor_CnFailed());

  exc<<winsockErr;

  exc.raise_me();
 }//if n==SOCKET_ERROR

 if(n==0) //<----------------------- ВОТ ЗДЕСЬ ПРИЕЗЖАЕТ НОЛЬ И ВЫКИДЫВАЕТСЯ ОШИБКА.
 {
  const int winsockErr=m_spProvider->m_WSAGetLastError.point()();

  // ERROR - [BUG CHECK] read from closed socket?

  t_ibp_error exc(E_FAIL,
                  ibp_mce_winsock__bug_check__read_from_closed_port_1,
                  IBP_CreateCustomErrorFor_CnFailed());

  exc<<winsockErr;

  exc.raise_me();
 }//if

 if(n<0)
 {
  // ERROR - unexpected result value from recv

  const int winsockErr=m_spProvider->m_WSAGetLastError.point()();

  t_ibp_error exc(E_FAIL,
                  ibp_mce_winsock__bug_check__unexpected_result_code_from_recv_operation_2,
                  IBP_CreateCustomErrorFor_CnFailed());

  exc<<n<<winsockErr;

  exc.raise_me();
 }//if n<0

 if(n>icb)
 {
  // ERROR - [BUG CHECK] read incorrect number of bytes

  t_ibp_error exc(E_FAIL,
                  ibp_mce_winsock__bug_check__recv_read_more_than_expected_2,
                  IBP_CreateCustomErrorFor_CnFailed());

  exc<<n<<icb;

  exc.raise_me();
 }//if

 return static_cast<size_t>(n);
}//Helper__Socket_Recv