Commit Graph

396 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
b3b34d9de2
Revert "peer: clamp a link's max HTLC forwarding policy to current max HTLC pay size"
This reverts commit c943d850193a476be1bc37ed922d1954cf040948.
2019-12-06 15:11:56 -08:00
Conner Fromknecht
f3398c0c0e
Merge pull request #3789 from cfromknecht/coop-close-rpc-status
republish force and coop closes on startup
2019-12-05 10:35:53 -08:00
Olaoluwa Osuntokun
183797f102
Merge pull request #3655 from carlaKC/fundingmgr-optionupfrontshutdown
Add Option Upfront Shutdown
2019-12-04 21:05:24 -08:00
Olaoluwa Osuntokun
c943d85019
peer: clamp a link's max HTLC forwarding policy to current max HTLC pay size
In this commit, we start to clamp the max HTLC forwarding policy to the
current register max HTLC payment size. By doing this, we ensure that
any links that have a advertised max HTLC transit size above the max
payment size will reject any incoming or outgoing attempts for such
large payments.
2019-12-04 15:10:47 -08:00
Conner Fromknecht
d9cf0396b3
peer+chancloser: mark coop broadcasted 2019-12-04 14:25:28 -08:00
carla
f86d63144c
multi: Set and check upfront shutdown address on close
This commit sets our close addresss to the address
specified by option upfront shutdown, if specified,
and disconnects from peers that fail to provide
their upfront shutdown address for coopertaive closes
of channels that were opened with the option set.
2019-12-03 11:38:29 +02:00
Conner Fromknecht
16318c5a41
multi: merge local+global features from remote peer 2019-11-08 05:31:47 -08:00
Conner Fromknecht
6c86075354
peer+server: use feature manager to generate feature vectors 2019-11-08 05:29:29 -08:00
Wilmer Paulino
cf5dc90d04
peer+server: wait until peer is active to begin channel opening process
Without waiting, we would proceed to retrieve the remote peer's
supported features, which may have not been set due to not yet receiving
their Init message.
2019-10-01 17:42:43 -04:00
Olaoluwa Osuntokun
3f8526a0ca
peer+lnpeer: add new methods to expose local+global features for lnpeer interface 2019-09-25 18:26:01 -07:00
Olaoluwa Osuntokun
0c076bf82a
Merge pull request #3016 from halseth/republish-close-tx-on-startup
[contractcourt] Republish close tx on startup
2019-09-25 16:45:48 -07:00
Conner Fromknecht
a280a4987c
peer: resend channel reestablishes without starting chan streams
This prevents the DLP protocol from breaking as a result of the
refactor, since the closing or closed channels won't be included in the
peer's active map.
2019-09-25 12:18:21 -07:00
Conner Fromknecht
ced113452d
peer: only mark active channels as failed
Also adds similar sanity check for LinkUpdater msgs, so that we don't
process messages for inactive channels.
2019-09-25 12:01:23 -07:00
Conner Fromknecht
f33a1a61e6
peer: extract error handling logic 2019-09-25 12:01:11 -07:00
Conner Fromknecht
2df5a36048
peer+lnwire: add LinkUpdater iface and impl on relevant msgs
Removes longstanding TODO to simplify parsing of target chanid.
2019-09-25 12:00:59 -07:00
Johan T. Halseth
2a6ad6e634
channeldb+lnwallet: don't pass isRestoredChan to ChanSyncMsg
Since we have access to the internal state of the channel, we can
instead get it directly instead of passing it in as a parameter.
2019-09-25 14:04:44 +02:00
Johan T. Halseth
1974bfa4cf
peer: send channel reestablish message for borked channels
When loading active channels for a connected peer, we gather channel
sync messages for all borked channels, and send them to the peer. This
should help a peer realize that the state is irreconcible, as we have
already realized.
2019-09-25 14:04:42 +02:00
Johan T. Halseth
33fe09482b
lnwire+multi: define Error() for lnwire.Error
To make lnwire.Error actually satisfy the error interface, define the
Error method directly.
2019-09-20 10:55:21 +02:00
Conner Fromknecht
6dca07577d
multi: move active/inactive ntfns from switch to link
Since we will now wait to deliver the event after channel reestablish,
notifying when the link is added to the switch will no longer be
sufficient. Later, we will add receiving reestablish as an additional
requirement for EligibleToForward returning true.

The inactive ntfn is also moved, to ensure that we don't fire inactive
notifications if no corresponding active notification was sent.
2019-09-19 12:46:44 -07:00
Joost Jager
3d7de2ad39
multi: remove dead code 2019-09-10 17:21:59 +02:00
Wilmer Paulino
d8dd6b3245
htlcswitch: cap fee updates to max fee allocation
In this commit, we begin to enforce a maximum channel commitment fee for
channel initiators when attempting to update their commitment fee. Now,
if the new commitment fee happens to exceed their maximum, then a fee
update of the maximum fee allocation will be proposed instead if needed.

A default of up to 50% of the channel initiator's balance is enforced
for the maximum channel commitment fee. It can be modified through the
`--max-channel-fee-allocation` CLI flag.
2019-09-03 16:49:59 -07:00
Joost Jager
4dd054ae90
multi: remove debug invoices
Debug invoices are rarely used nowadays, but keep asking for maintenance
every time refactoring in primarily the invoice registry occurs. We have
passed the cost/benefit tipping point, so therefore the debug invoice
concept is removed in this commit.

Previously the debughtlc flag also controlled whether hodl masks were
active. It is safe to remove that additional condition because the hodl
masks are still guarded by the dev build tag.
2019-08-14 21:33:03 +02:00
Wilmer Paulino
87ff463abd
htlcswitch+lnd: make max cltv expiry configurable 2019-07-26 18:05:58 -07:00
Conner Fromknecht
9eda94a40e
peer: don't reply if peer's request initial_graph_sync
We stopped requesting this from other nodes as it is very expensive as
the graph continues to grow. In this commit we will also stop
responding, as nodes are recommended to begin using the `gossip_queries`
and upcoming `extended_gossip_queries` to reconcile missing graph data.
2019-07-15 14:09:42 -07:00
Conner Fromknecht
efcdefee39
peer: pass watchtower client's to active links 2019-06-13 19:54:19 -07:00
Joost Jager
064e8492de
cnct+htlcswitch+invoices: move invoice parameter check out of link
This commit is the final step in making the link unaware of invoices. It
now purely offers the htlc to the invoice registry and follows
instructions from the invoice registry about how and when to respond to
the htlc.

The change also fixes a bug where upon restart, hodl htlcs were
subjected to the invoice minimum cltv delta requirement again. If the
block height has increased in the mean while, the htlc would be canceled
back.

Furthermore the invoice registry interaction is aligned between link and
contract resolvers.
2019-05-15 14:42:12 +02:00
Joost Jager
d55a8b7b29
channel+cnct: remove preimage from channel and resolution
Now that the success resolver preimage field is always populated by the
incoming contest resolver, preimage lookups earlier in the
process (channel and channel arbitrator) can mostly be removed.
2019-05-15 14:41:49 +02:00
Johan T. Halseth
c4415f0400
Merge pull request #3044 from cfromknecht/spelling-fixes
multi: fix spelling mistakes
2019-05-07 08:50:36 +02:00
Conner Fromknecht
a11a8693ae
peer: break sendMessage on server quit
This commit modifies sendMessage to break on the server's quit channel,
which allows synchronous callers of SendMessage or SendLazyMessage to
receive an error during server shutdown which can be independent of a
particular peer's shutdown.

As of https://github.com/lightningnetwork/lnd/pull/2916, all replies
made by gossip syncers were modified to be synchronous. In certain
cases, This would prevent the syncers from shutting down promptly, as
they would try to offload a batch a of messages that could not be
aborted. Now, an error will be propagated back to the caller, allowing
them to detect the error condition, and reevaluate their own quit
signals, releasing any waitgrouped goroutines and permitting a quick
shutdown.
2019-05-06 14:56:52 -07:00
Conner Fromknecht
17b2140cb5
multi: fix spelling mistakes 2019-05-04 15:35:37 -07:00
Conner Fromknecht
ca358e9673
lnpeer+peer: use importable lnpeer.ErrPeerExiting
As a prepatory step to making gossip replies synchronous, we will move
the ErrPeerExiting error into the lnpeer package so that it can be
imported by the discovery package. With synchronous sends, this error
can now be detected and handled by goroutines in the syncer, and cause
them to exit instead of continue to sending backlogs.
2019-04-26 20:04:49 -07:00
Olaoluwa Osuntokun
42b081bb37
Merge pull request #2924 from cfromknecht/write-and-flush
peer: resume partial writes due to timeouts
2019-04-26 18:25:37 -07:00
Johan T. Halseth
b53899c43c
lnd: rename package main->lnd 2019-04-23 20:57:33 +02:00
Conner Fromknecht
e013577a4f
peer: remove write backoff
This commit removes the write backoff, since subsequent retries no
longer need to access the write pool. Subsequent flushes will resume
writing any partial writes that occurred before the timeout until the
message is received or the idle write timer is triggered.

In the future, we can add callbacks that execute on write events
timeouts. This can be useful for mobile clients that might roam, as the
timeout could indicate the connection is dead even if the OS has not
reported it closed. The callback can be used then, for example, to
initiate another outbound connection to test whether or not the issue is
related to the connection.
2019-04-22 16:05:41 -07:00
Conner Fromknecht
bfbf3015ad
peer: replace Write with split WriteMessage then Flush methods
This commit modifies the way the link writes messages to the wire, by
first buffering ciphertexts to the connection using WriteMessage, and
then calling Flush separately. Currently, the call to Write tries to do
both, which can result in a blocking operation for up to the duration of
the write timeout. Splitting these operations permits less blocking in
the write pool, since now we only need to use a write worker to
serialize and encrypt the plaintext.

After the write pool is released, the peer then attempts to flush the
message using the appropriate write timeout. If a timeout error occurs,
the peer will continue to flush the message w/o serializing or
encrypting the message again, until the message is fully written to the
wire or the write idle timer disconnects the peer.
2019-04-22 16:05:26 -07:00
Conner Fromknecht
f8345d38fb
peer: only set ping time once
As a preliminary step to integrating the separated WriteMessage and
Flush calls in the peer, we'll modify the peer to only set a timestamp
on Ping messages once. This makes sense for two reasons, 1) if the
message has already been partially written, we have already committed to
a ping time, and 2) a ciphertext containing the first ping time will
already be buffered in the connection, and we will only be attempting to
Flush on timeout errors.
2019-04-22 16:05:10 -07:00
Joost Jager
ab4da0f53d
cnct: define separate broadcast delta for outgoing htlcs
This commits exposes the various parameters around going to chain and
accepting htlcs in a clear way.

In addition to this, it reverts those parameters to what they were
before the merge of commit d1076271456bdab1625ea6b52b93ca3e1bd9aed9.
2019-04-05 11:36:07 +02:00
Wilmer Paulino
70be812747
discovery+server: use new gossiper's SyncManager subsystem 2019-04-03 15:44:43 -07:00
Wilmer Paulino
80b84eef9c
config+peer: replace NoChanUpdates flag with NumGraphSyncPeers
In this commit, we replace the NoChanUpdates flag with a flag that
allows us to specify the number of peers we want to actively receive new
graph updates from. This will be required when integrating the new
gossiper SyncManager subsystem with the rest of lnd.
2019-04-03 15:43:51 -07:00
Olaoluwa Osuntokun
893cff60c4
Merge pull request #2839 from joostjager/htlc-expiry-check
link: increase expiry grace delta for exit hop and forwarded htlcs
2019-04-01 18:15:56 -07:00
Olaoluwa Osuntokun
73eb37b3a9
peer: don't attempt to load any channels that have a non-default state, other then recovered
In this commit, we modify the filter we use to determine if we should
add a new channel to the switch to reflect the new channel restoration
state. For all other non-default states, we want to avoid loading in a
channel, but for the restoration state, we need to load the link in
order to ensure we initiate the data loss protection protocol once we
connect to the remote peer.
2019-03-28 17:53:24 -07:00
Conner Fromknecht
7358535725
peer+server: log pubkey@addr 2019-03-26 16:41:13 -07:00
Conner Fromknecht
93e56f9ee8
peer: add symmetric write idle timeout
In this commit, we add a 5 minute idle timer to
the write handler. After catching the write
timeouts, it's been observed that some connections
have trouble reading a message for several hours.
This typically points to a deeper issue w/ the peer
or, e.g. the remote peer switched networks. This now
mirrors the idle timeout used in the read handler,
such that we will disconnect a peer if we are unable
to send or receive a message from the peer after 5
minutes.

We also modify the readHandler to drain its
idleTimer's channel in the even that the timer had
already fired, but we successfully sent the message.
2019-03-26 16:40:41 -07:00
Conner Fromknecht
b78e5f6742
peer: reduce write timeout to 5 seconds
This commit reduces the peer's write timeout to 5s.
Now that the peer catches write timeouts and doesn't
disconnect, this will ensure we spend less time blocking
in the write pool in case others also need to access the
workers concurrently. Slower peers will now only block
for 5s, after every reattempt w/ exponential backoff.
2019-03-26 16:40:24 -07:00
Conner Fromknecht
99150b41d6
peer: retry writes with delay on timeout errors
This commit modifies the writeHandler to catch timeout
errors, and retry writes to the socket after a small
backoff, which increases exponentially from 5s to 1m.
With the growing channel graph size, some lower-powered
devices can be slow to pull messages off the wire during
validation. The current behavior will cause us to
disconnect the peer, and resend all of the messages that
the remote peer is slow to validate. Catching the timeout
helps in preventing such expensive reconnection cycles,
especially as the network continues to grow.

This is also a preliminary step to reducing the
write timeout constant. This will allow concurrent usage
of the write pools w/out devoting excessive amounts of
time blocking the pool for slow peers.
2019-03-26 16:40:07 -07:00
Joost Jager
cd535b9401
link: increase expiry grace delta
This commit increase the expiry grace delta to a value above the
broadcast delta. This prevents htlcs from being accepted that would
immediately trigger a channel force close.

A correct delta is generated in server.go where there is access to
the broadcast delta and passed via the peer to the links.

Co-authored-by: Jim Posen <jim.posen@gmail.com>
2019-03-26 18:42:00 +01:00
Conner Fromknecht
2e5bc783f7
peer: preallocate errchans opt 2019-03-05 17:08:35 -08:00
Conner Fromknecht
f39edd8000
peer: add SendMessageLazy 2019-03-05 17:08:22 -08:00
Conner Fromknecht
660bbaf646
peer: add message reordering based on priority 2019-03-05 17:08:05 -08:00
Conner Fromknecht
6f1ccf14e9
Revert "peer: reduce write timeout to 10s"
This reverts commit db2c104111c3c12e1651120fe5a51ce03dad8c58.
2019-03-04 13:55:09 -08:00