aljaz/lightning
1
0
Fork 0
mirror of https://github.com/aljazceru/lightning.git synced 2026-01-04 14:54:26 +01:00
Code Issues Packages Projects Releases Wiki Activity

connectd: don't ask DNS seeds for addresses on every reconnect.

Browse Source 
We were stressing the servers if node cannot be found.  Only do lookup
on manual connect commands.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Protocol: lightningd: Only use DNS server address lookup on manual `connect` commands, not normal reconnection attempts.
This commit is contained in:
Rusty Russell
2022-12-20 06:42:39 +10:30
parent 5a4c8402a7
commit 22eac96750
3 changed files with 21 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
lightningd/connect_control.c
View File

@@ -76,7 +76,8 @@ static void try_connect(const tal_t *ctx,
struct lightningd *ld,
const struct node_id *id,
u32 seconds_delay,
const struct wireaddr_internal *addrhint);
const struct wireaddr_internal *addrhint,
bool dns_fallback);
struct id_and_addr {
struct node_id id;
@@ -226,7 +227,7 @@ static struct command_result *json_connect(struct command *cmd,
&peer->addr);
}
try_connect(cmd, cmd->ld, &id_addr.id, 0, addr);
try_connect(cmd, cmd->ld, &id_addr.id, 0, addr, true);
/* Leave this here for peer_connected, connect_failed or peer_disconnect_done. */
new_connect(cmd->ld, &id_addr.id, cmd);
@@ -248,6 +249,7 @@ struct delayed_reconnect {
struct lightningd *ld;
struct node_id id;
struct wireaddr_internal *addrhint;
bool dns_fallback;
};
static void gossipd_got_addrs(struct subd *subd,
@@ -265,7 +267,8 @@ static void gossipd_got_addrs(struct subd *subd,
connectmsg = towire_connectd_connect_to_peer(NULL,
&d->id,
addrs,
d->addrhint);
d->addrhint,
d->dns_fallback);
subd_send_msg(d->ld->connectd, take(connectmsg));
tal_free(d);
}
@@ -282,7 +285,8 @@ static void try_connect(const tal_t *ctx,
struct lightningd *ld,
const struct node_id *id,
u32 seconds_delay,
const struct wireaddr_internal *addrhint)
const struct wireaddr_internal *addrhint,
bool dns_fallback)
{
struct delayed_reconnect *d;
struct peer *peer;
@@ -291,6 +295,7 @@ static void try_connect(const tal_t *ctx,
d->ld = ld;
d->id = *id;
d->addrhint = tal_dup_or_null(d, struct wireaddr_internal, addrhint);
d->dns_fallback = dns_fallback;
if (!seconds_delay) {
do_connect(d);
@@ -347,11 +352,14 @@ void try_reconnect(const tal_t *ctx,
} else
peer->reconnect_delay = INITIAL_WAIT_SECONDS;
/* We only do DNS fallback lookups for manual connections, to
* avoid stressing DNS servers for private nodes (sorry!) */
try_connect(ctx,
peer->ld,
&peer->id,
peer->reconnect_delay,
addrhint);
addrhint,
false);
}
/* We were trying to connect, but they disconnected. */