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0aad222c2d
local_chan was mainly around so we could "soft" disable channels (and really disable them once we used the channel_update in an error message). Instead we introduce the idea of a "deferred_update": it's either deferred indefinitely (a peer goes offline, if we need to send it in an error we'll apply it immediatly), or simply delayed to avoid spamming everyone. The resulting rewrite is much clearer, IMHO. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
#ifndef LIGHTNING_GOSSIPD_GOSSIPD_H
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#define LIGHTNING_GOSSIPD_GOSSIPD_H
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#include "config.h"
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#include <ccan/timer/timer.h>
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#include <common/node_id.h>
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#include <wire/peer_wire.h>
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/* We talk to `hsmd` to sign our gossip messages with the node key */
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#define HSM_FD 3
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/* connectd asks us for help finding nodes, and gossip fds for new peers */
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#define CONNECTD_FD 4
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struct chan;
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struct channel_update_timestamps;
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struct broadcastable;
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struct lease_rates;
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struct seeker;
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/*~ The core daemon structure: */
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struct daemon {
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/* Who am I? Helps us find ourself in the routing map. */
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struct node_id id;
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/* Peers we are gossiping to: id is unique */
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struct list_head peers;
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/* Current blockheight: 0 means we're not up-to-date. */
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u32 current_blockheight;
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/* Connection to lightningd. */
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struct daemon_conn *master;
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/* Connection to connect daemon. */
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struct daemon_conn *connectd;
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/* Routing information */
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struct routing_state *rstate;
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/* Timers: we batch gossip, and also refresh announcements */
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struct timers timers;
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/* Alias (not NUL terminated) and favorite color for node_announcement */
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u8 alias[32];
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u8 rgb[3];
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/* What addresses we can actually announce. */
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struct wireaddr *announcable;
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/* Timer until we can send a new node_announcement */
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struct oneshot *node_announce_timer;
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/* Channels we have an announce for, but aren't deep enough. */
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struct short_channel_id *deferred_txouts;
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/* What, if any, gossip we're seeker from peers. */
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struct seeker *seeker;
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/* Features lightningd told us to set. */
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struct feature_set *our_features;
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/* The channel lease rates we're advertising */
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const struct lease_rates *rates;
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/* Any of our channel_updates we're deferring. */
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struct list_head deferred_updates;
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};
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struct range_query_reply {
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struct short_channel_id scid;
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struct channel_update_timestamps ts;
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};
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/* This represents each peer we're gossiping with */
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struct peer {
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/* daemon->peers */
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struct list_node list;
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/* parent pointer. */
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struct daemon *daemon;
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/* The ID of the peer (always unique) */
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struct node_id id;
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/* How much contribution have we made to gossip? */
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size_t gossip_counter;
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/* The two features gossip cares about (so far) */
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bool gossip_queries_feature, initial_routing_sync_feature;
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/* Are there outstanding responses for queries on short_channel_ids? */
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const struct short_channel_id *scid_queries;
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const bigsize_t *scid_query_flags;
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size_t scid_query_idx;
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/* Are there outstanding node_announcements from scid_queries? */
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struct node_id *scid_query_nodes;
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size_t scid_query_nodes_idx;
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/* Do we have an scid_query outstanding? What to call when it's done? */
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bool scid_query_outstanding;
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void (*scid_query_cb)(struct peer *peer, bool complete);
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/* What we're querying: [range_first_blocknum, range_end_blocknum) */
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u32 range_first_blocknum, range_end_blocknum;
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u32 range_blocks_outstanding;
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struct range_query_reply *range_replies;
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void (*query_channel_range_cb)(struct peer *peer,
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u32 first_blocknum, u32 number_of_blocks,
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const struct range_query_reply *replies);
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/* The daemon_conn used to queue messages to/from the peer. */
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struct daemon_conn *dc;
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};
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/* Search for a peer. */
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struct peer *find_peer(struct daemon *daemon, const struct node_id *id);
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/* This peer (may be NULL) gave is valid gossip. */
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void peer_supplied_good_gossip(struct peer *peer, size_t amount);
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/* Pick a random peer which passes check_peer */
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struct peer *random_peer(struct daemon *daemon,
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bool (*check_peer)(const struct peer *peer));
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/* Queue a gossip message for the peer: the subdaemon on the other end simply
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* forwards it to the peer. */
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void queue_peer_msg(struct peer *peer, const u8 *msg TAKES);
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/* Queue a gossip_store message for the peer: the subdaemon on the
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* other end simply forwards it to the peer. */
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void queue_peer_from_store(struct peer *peer,
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const struct broadcastable *bcast);
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#endif /* LIGHTNING_GOSSIPD_GOSSIPD_H */
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