nat.h

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/*
     This file is part of GNUnet.
     Copyright (C) 2011, 2016 GNUnet e.V.
 
     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.
 
     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Affero General Public License for more details.
 
     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
     SPDX-License-Identifier: AGPL3.0-or-later
 */
 
#ifndef NAT_H
#define NAT_H
#include "gnunet_util_lib.h"
 
 
GNUNET_NETWORK_STRUCT_BEGIN
 
struct GNUNET_NAT_TestMessage
{
  struct GNUNET_MessageHeader header;
 
  uint32_t dst_ipv4;
 
  uint16_t dport;
 
  uint16_t data;
 
  int32_t is_tcp;
};
 
 
enum GNUNET_NAT_RegisterFlags
{
  GNUNET_NAT_RF_NONE = 0,
 
  GNUNET_NAT_RF_ADDRESSES = 1,
 
  GNUNET_NAT_RF_REVERSAL = 2
};
 
 
struct GNUNET_NAT_RegisterMessage
{
  struct GNUNET_MessageHeader header;
 
  uint8_t flags;
 
  uint8_t proto;
 
  uint16_t str_len GNUNET_PACKED;
 
  uint16_t num_addrs GNUNET_PACKED;
 
  /* Followed by @e num_addrs addresses of type 'struct
     sockaddr' */
 
  /* Followed by @e str_len section name to use for options */
};
 
 
struct GNUNET_NAT_HandleStunMessage
{
  struct GNUNET_MessageHeader header;
 
  uint16_t sender_addr_size;
 
  uint16_t payload_size;
 
  /* followed by a `struct sockaddr` of @e sender_addr_size bytes */
 
  /* followed by payload with @e payload_size bytes */
};
 
 
struct GNUNET_NAT_RequestConnectionReversalMessage
{
  struct GNUNET_MessageHeader header;
 
  uint16_t local_addr_size;
 
  uint16_t remote_addr_size;
 
  /* followed by a `struct sockaddr` of @e local_addr_size bytes */
 
  /* followed by a `struct sockaddr` of @e remote_addr_size bytes */
};
 
 
struct GNUNET_NAT_ConnectionReversalRequestedMessage
{
  struct GNUNET_MessageHeader header;
 
  /* followed by a `struct sockaddr_in` */
};
 
 
struct GNUNET_NAT_AddressChangeNotificationMessage
{
  struct GNUNET_MessageHeader header;
 
  int32_t add_remove GNUNET_PACKED;
 
  uint32_t addr_class GNUNET_PACKED;
  /* followed by a `struct sockaddr` */
};
 
 
struct GNUNET_NAT_AddGlobalAddressMessage
{
  struct GNUNET_MessageHeader header;
 
  unsigned int address_length;
 
  /* Followed by the address to add */
};
 
 
GNUNET_NETWORK_STRUCT_END
 
#endif