Function nw_GetThisIP

networking/networking.cpp:860–892

returns the ip address of this computer

// returns the ip address of this computer
uint32_t nw_GetThisIP() {
  SOCKADDR_IN local_address;
  int address_size = sizeof(SOCKADDR);

  if (Net_fixed_ip != INADDR_NONE) {
    return Net_fixed_ip;
  }
  // Init local address to zero
  local_address.sin_addr.s_addr = INADDR_ANY;
  if (Dialup_connection) {
#ifdef WIN32
    local_address.sin_addr.s_addr = psnet_ras_status();
#else
    local_address.sin_addr.s_addr = INADDR_ANY;
#endif
  }
  if ((!Dialup_connection) || (!local_address.sin_addr.s_addr)) {
    // Removed the fancy way, it worked worse than the easy way (some adsl/cable people had problems.
    /*
    // Get the local host name
    ret = gethostname(local, 255 );
    if (ret != SOCKET_ERROR )
    {
            // Resolve host name for local address
            hostent = gethostbyname((LPSTR)local);
            if ( hostent )
                    local_address.sin_addr.s_addr = *((u_long FAR *)(hostent->h_addr));
    }
    */
    local_address.sin_addr.s_addr = INADDR_ANY;
  }
  return local_address.sin_addr.s_addr;
}

// Calculates a unique uint16_t checksum for a stream of data
uint16_t nw_CalculateChecksum(void *vptr, int len) {