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cjdns/dht/DHTMessage.h

64 lines
1.8 KiB
C

/* vim: set expandtab ts=4 sw=4: */
/*
* You may redistribute this program and/or modify it under the terms of
* the GNU General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef DHTMessage_H
#define DHTMessage_H
#ifdef SUBNODE
#error "this file should not be included in subnode"
#endif
#include "benc/Dict.h"
#include "wire/Message.h"
/**
* Maximum number of bytes in a message.
* Ethernet MTU is 1500 so it's hard to imagine much more.
*/
#define DHTMessage_MAX_SIZE 1536
/**
* This struct represents a DHT message which will be passed to the
* modules. The only part of the message which will be available to
* all modules is Message.peer. Incoming modules will have Message.bytes
* and Message.length when they come from the network module.
*/
struct DHTMessage;
struct DHTMessage
{
struct Address* address;
Message_t* binMessage;
/** The message as a bencoded dictionary. */
Dict* asDict;
struct EncodingScheme* encodingScheme;
int encIndex;
int pleaseRespond;
/**
* If this message is an outgoing reply, replyTo is the original query.
* For incoming replies or any queries, it is NULL.
*/
struct DHTMessage* replyTo;
/** A memory allocator which will be freed after this message is sent. */
struct Allocator* allocator;
};
#endif