core-lightning/wire/peer_wire.h
Christian Decker 28cc92cd15 gossip: Use bit 3 (mask 0x08) to signal initial routing sync
After quite some back and forth we seem to finally agree on the bit
3 (mask 0x08) to signal optional initial_routing_sync.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
2017-08-09 10:01:33 +09:30

48 lines
1.7 KiB
C

#ifndef LIGHTNING_WIRE_PEER_WIRE_H
#define LIGHTNING_WIRE_PEER_WIRE_H
#include "config.h"
#include <stdbool.h>
#include <wire/gen_peer_wire.h>
/* BOLT #1:
*
* A node MUST ignore a received message of unknown type, if that type is odd.
*
* A node MUST fail the channels if it receives a message of unknown type, if
* that type is even.
*/
/* Return true if it's an unknown message. cursor is a tal ptr. */
bool is_unknown_msg(const u8 *cursor);
/* Return true if it's an unknown ODD message. cursor is a tal ptr. */
bool is_unknown_msg_discardable(const u8 *cursor);
/* Return true if it's a gossip message. */
bool is_gossip_msg(const u8 *cursor);
/* BOLT #2:
*
* Only the least-significant bit of `channel_flags` is currently
* defined: `announce_channel`. This indicates whether the initiator
* of the funding flow wishes to advertise this channel publicly to
* the network as detailed within [BOLT #7]
*/
#define CHANNEL_FLAGS_ANNOUNCE_CHANNEL 1
/* BOLT #7:
*
* Upon establishing a connection, the two endpoints negotiate whether
* to perform an initial sync by setting the `initial_routing_sync`
* flags in the `init` message. The endpoint SHOULD set the
* `initial_routing_sync` flag if it requires a full copy of the other
* endpoint's routing state. Upon receiving an init message with the
* `initial_routing_sync` flag set the node sends `channel_announcement`s,
* `channel_update`s and `node_announcement`s for all known channels and
* nodes as if they were just received.
*/
#define LOCALFEATURES_INITIAL_ROUTING_SYNC 0x08
/* Compare two short_channel_ids and return true if they are the equal */
bool short_channel_id_eq(const struct short_channel_id *a,
const struct short_channel_id *b);
#endif /* LIGHTNING_WIRE_PEER_WIRE_H */