core-lightning/gossipd/seeker.h

#ifndef LIGHTNING_GOSSIPD_SEEKER_H
#define LIGHTNING_GOSSIPD_SEEKER_H
#include "config.h"

struct daemon;
struct peer;
struct short_channel_id;

struct seeker *new_seeker(struct daemon *daemon);

void query_unknown_channel(struct daemon *daemon,
			   struct peer *peer,
			   const struct short_channel_id *id);

void query_unknown_node(struct seeker *seeker, struct peer *peer);

void seeker_setup_peer_gossip(struct seeker *seeker, struct peer *peer);

bool remove_unknown_scid(struct seeker *seeker,
			 const struct short_channel_id *scid,
			 bool found);
bool add_unknown_scid(struct seeker *seeker,
		      const struct short_channel_id *scid,
		      struct peer *peer);

#endif /* LIGHTNING_GOSSIPD_SEEKER_H */
gossipd: move gossip seeking routines into new file seeker.c Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:15:24 +02:00			`#ifndef LIGHTNING_GOSSIPD_SEEKER_H`
			`#define LIGHTNING_GOSSIPD_SEEKER_H`
			`#include "config.h"`

			`struct daemon;`
			`struct peer;`
			`struct short_channel_id;`

gossipd: start streaming gossip from last gossip timestamp minus 10 minutes. We assume that the time for gossip propagation is < 10 minutes, so by going back that far from last gossip we won't miss anything, Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:30:24 +02:00			`struct seeker new_seeker(struct daemon daemon);`
gossipd: move gossip seeking routines into new file seeker.c Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:15:24 +02:00
			`void query_unknown_channel(struct daemon *daemon,`
			`struct peer *peer,`
			`const struct short_channel_id *id);`

seeker: start doing a channel probe if we see unknown node_announcement msgs. It usually means we're missing something, but there's no way to ask what. Simply start a broad scid probe. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:32:24 +02:00			`void query_unknown_node(struct seeker seeker, struct peer peer);`

seeker: take over gossip control. The seeker starts by asking a peer (the first peer!) for all gossip since a minute before the modified time of the gossip store. This algorithm is enhanced in successive patches. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:16:24 +02:00			`void seeker_setup_peer_gossip(struct seeker seeker, struct peer peer);`

gossipd: move gossip seeking routines into new file seeker.c Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:15:24 +02:00			`bool remove_unknown_scid(struct seeker *seeker,`
seeker: use hash table for unknown short_channel_ids. Instead of a linear array which is fairly inefficient if it turns out we know nothing at all. We remove the gossip_missing() call by changing the api to remove_unknown_scid() to include a flag as to whether the scid turned out to be real or not. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:18:24 +02:00			`const struct short_channel_id *scid,`
			`bool found);`
gossipd: move gossip seeking routines into new file seeker.c Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:15:24 +02:00			`bool add_unknown_scid(struct seeker *seeker,`
seeker: try asking peer which gave us unknown data first. This should give more reliable results, though it risks us getting suckered into always consulting the same peer. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:31:24 +02:00			`const struct short_channel_id *scid,`
			`struct peer *peer);`
gossipd: restore dev-suppress-gossip functionality. Don't start new peers, and don't check on existing peers. This should get rid of most gossip. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:34:24 +02:00
gossipd: move gossip seeking routines into new file seeker.c Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2019-10-08 03:15:24 +02:00			`#endif /* LIGHTNING_GOSSIPD_SEEKER_H */`