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test_lightningd.py: fix obscure corner case in gossip.

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I actually hit this very hard to reproduce race: if we haven't process
the channeld message when block #6 comes in, we won't send the gossip
message.  We wait for logs, but don't generate new blocks, and timeout
on l1.daemon.wait_for_log('peer_out WIRE_ANNOUNCEMENT_SIGNATURES').

The solution, which also tests that we don't send announcement signatures
immediately, is to generate a single block, wait for CHANNELD_NORMAL,
then (in gossip tests), generate 5 more.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-06-06 09:17:10 +09:30
parent 605438f213
commit 87fc3439c4
3 changed files with 21 additions and 4 deletions
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9
lightningd/gossip/gossip.c
View File

@ -612,16 +612,19 @@ static struct io_plan *resolve_channel_req(struct io_conn *conn,
status_failed(WIRE_GOSSIPSTATUS_BAD_REQUEST,
"Unable to parse resolver request");
status_trace("Attempting to resolve channel %s",
type_to_string(trc, struct short_channel_id, &scid));
nc = get_connection_by_scid(daemon->rstate, &scid, 0);
if (!nc) {
status_trace("Failed to resolve channel %s",
type_to_string(trc, struct short_channel_id, &scid));
keys = NULL;
} else {
keys = tal_arr(msg, struct pubkey, 2);
keys[0] = nc->src->id;
keys[1] = nc->dst->id;
status_trace("Resolved channel %s %s<->%s",
type_to_string(trc, struct short_channel_id, &scid),
type_to_string(trc, struct pubkey, &keys[0]),
type_to_string(trc, struct pubkey, &keys[1]));
}
daemon_conn_send(&daemon->master,
take(towire_gossip_resolve_channel_reply(msg, keys)));

4
lightningd/peer_control.c
View File

@ -662,6 +662,10 @@ static enum watch_result funding_announce_cb(struct peer *peer,
return KEEP_WATCHING;
}
if (peer->state != CHANNELD_NORMAL || !peer->owner) {
log_debug(peer->ld->log,
"Funding tx announce ready, but peer state %s %s",
peer_state_name(peer->state),
peer->owner ? peer->owner->name : "unowned");
return KEEP_WATCHING;
}
subd_send_msg(peer->owner,

12
tests/test_lightningd.py
View File

@ -183,7 +183,7 @@ class LightningDTests(BaseLightningDTests):
# Technically, this is async to fundchannel.
l1.daemon.wait_for_log('sendrawtx exit 0')
l1.bitcoin.rpc.generate(6)
l1.bitcoin.rpc.generate(1)
l1.daemon.wait_for_log('-> CHANNELD_NORMAL')
l2.daemon.wait_for_log('-> CHANNELD_NORMAL')
@ -307,6 +307,10 @@ class LightningDTests(BaseLightningDTests):
self.fund_channel(l1,l2,10**5)
# Shouldn't send announce signatures until 6 deep.
assert not l1.daemon.is_in_log('peer_out WIRE_ANNOUNCEMENT_SIGNATURES')
l1.bitcoin.rpc.generate(5)
l1.daemon.wait_for_log('peer_out WIRE_ANNOUNCEMENT_SIGNATURES')
l1.daemon.wait_for_log('peer_in WIRE_ANNOUNCEMENT_SIGNATURES')
@ -366,6 +370,9 @@ class LightningDTests(BaseLightningDTests):
src.rpc.connect('localhost', dst.info['port'], dst.info['id'])
src.openchannel(dst, 20000)
# Allow announce messages.
l1.bitcoin.rpc.generate(5)
def settle_gossip(n):
"""Wait for gossip to settle at the node
"""
@ -407,6 +414,9 @@ class LightningDTests(BaseLightningDTests):
self.fund_channel(l1, l2, 10**6)
self.fund_channel(l2, l3, 10**6)
# Allow announce messages.
l1.bitcoin.rpc.generate(5)
# If they're at different block heights we can get spurious errors.
sync_blockheight(l1, l2, l3)