Commit Graph

338 Commits

Author SHA1 Message Date
Wilmer Paulino
5c414bb1d0
multi: make OpenChannel take in openChanReq 2018-08-16 20:19:26 -07:00
Conner Fromknecht
121252934b
server: rearrange peer lifecyle helpers for readability 2018-08-13 21:55:32 -07:00
Conner Fromknecht
0ee0abc166
server: add async peer Start() + safer cleanup
This commit adds asynchronous starting of peers,
in order to avoid potential DOS vectors. Currently,
we block with the server's mutex while peers exchange
Init messages and perform other setup. Thus, a remote
peer that does not reply with an init message will
cause server to block for 15s per attempt.

We also modify the startup behavior to spawn
peerTerminationWatchers before starting the
peer itself, ensuring that a peer is properly
cleaned up if the initialization fails. Currently,
failing to start a peer does not execute the bulk
of the teardown logic, since it is not spawned
until after a successful Start occurs.
2018-08-13 21:52:37 -07:00
Conner Fromknecht
a6e7b35872
server: use blocking RemoveLink to shutdown links 2018-08-10 11:42:25 -07:00
Olaoluwa Osuntokun
61f5b3e3f1
Merge pull request #1709 from Empact/noisedial
Move noiseDial from config.go to server.go
2018-08-09 21:43:37 -07:00
Olaoluwa Osuntokun
d3b1b9aa98
Merge pull request #1668 from cfromknecht/interface-tickers
Ticker Package
2018-08-09 20:55:25 -07:00
Wilmer Paulino
9d2eeb6304
multi: update to latest fee estimation interface 2018-08-09 17:29:52 -07:00
Ben Woosley
896128efd0
Move noiseDial from config.go to server.go
noiseDial is only called from server.go, has nothing to do with configuration,
and moving it removes config.go's reliance on btcec and brontide.
2018-08-09 15:13:05 -04:00
Conner Fromknecht
d5d01dd575
server: configure switch w/ default log/fwd tickers 2018-08-09 02:48:07 -07:00
Olaoluwa Osuntokun
97f9759ee1
Merge pull request #1675 from cfromknecht/peer-backoff-backoff
server: peer backoff backoff
2018-08-08 20:03:28 -07:00
Wilmer Paulino
0de0a39291
server: prevent increasing epochErrors if conn was established
In this commit, we fix a small bug where we would increase epochErrors
by one even if connections were successfully established. Due to this,
we would stay stuck inside of the peer bootstrapper loop without
requerying for new peers.
2018-08-08 17:24:14 -07:00
Conner Fromknecht
a704c67791
server: compute backoff with connection duration relaxation 2018-08-07 14:50:11 -07:00
Conner Fromknecht
cf2c371042
multi: fix linting errors 2018-08-02 18:20:50 -07:00
Olaoluwa Osuntokun
33979b2636
funding+server: move initialization of funding manager into the server
In this commit, we move the initialization of the server into the
funding manager itself. We do this as it's no longer the case that _any_
RPC needs to access the funding manager. In the past, this was the
only reason that the funding manager was instantiated outside of the
server: to be able to respond to queries _before_ the server was
started.

This change also fixes a bug as atm, the funding manager will try to
register for notifications _before_ the ChainNotifier itself has fully
started.
2018-08-01 16:02:55 -07:00
Olaoluwa Osuntokun
e0baa49690
Merge pull request #1387 from wpaulino/send-disable-chan-update
multi: send a channel update with disabled flag set on channel close
2018-07-23 17:46:37 -07:00
Olaoluwa Osuntokun
bca926d6af
Merge pull request #1371 from wpaulino/prune-link-nodes
server: prune link nodes without any open channels
2018-07-21 18:55:38 -07:00
Wilmer Paulino
9cedef9245
fundingmanager: send messages to peers directly
In this commit, we modify the existing message sending functionality
within the fundingmanager. Due to each mesage send requiring to hold the
server's lock to retrieve the peer, we might run into a case where the
lock is held for a larger than usual amount of time and would therefore
block on sending the message within the fundingmanager. We remedy this
by taking a similar approach to some recent changes within the gossiper.
We now keep track of each peer within the internal fundingmanager
messages and send messages directly to them.
2018-07-19 12:34:11 -07:00
Wilmer Paulino
04c5eba194
server: modify NotifyWhenOnline to return the peer once connected 2018-07-19 12:32:32 -07:00
Wilmer Paulino
0aa1f39af8
channeldb+server: prune link nodes on startup
In this commit, we extend the server's functionality to prune link nodes
on startup. Since we currently only decide whether to prune a link node
from the database based on a channel close, it's possible that we have
link nodes lingering from before this functionality was added on.
2018-07-17 17:35:31 -07:00
Wilmer Paulino
38b52df51f
peer+server: remove persistent connections for peers with no open channels remaining 2018-07-17 17:35:30 -07:00
Olaoluwa Osuntokun
6f60f139f4 multi: switch over import paths from roasbeef/* to btcsuite/* 2018-07-13 17:05:39 -07:00
Wilmer Paulino
873cccc7a6
multi: send channel update with disabled active on force and coop chan closes 2018-07-11 17:07:03 -07:00
Olaoluwa Osuntokun
2c08a22ed3
server: launch new invoiceRegistry goroutines on start up 2018-07-06 12:22:00 -07:00
Conner Fromknecht
5be6993a56
server: log pubkey hex in connection callbacks 2018-07-03 17:09:10 -07:00
Olaoluwa Osuntokun
17399994e4
config+server: update usage of lncfg methods to pass in resolver
In this commit, we update all the lncfg methods used to properly pass in
a new resolver. This is required in order to ensure that we don't leak
our DNS queries if Tor mode is active.
2018-06-27 18:10:34 -07:00
Olaoluwa Osuntokun
c03f731643
server: properly use the set of normalized external ips 2018-06-27 16:43:38 -07:00
Oliver Gugger
c1b1dd96ef
lncfg: move configuration helper methods to new package 2018-06-14 08:19:09 +02:00
Oliver Gugger
460fa25871
config+lnd+server: add unix socket support 2018-06-14 08:19:09 +02:00
Wilmer Paulino
8198466972
multi: move block epochs dependency from links to switch
In this commit, we move the block height dependency from the links in
the switch to the switch itself. This is possible due to a recent change
on the links no longer depending on the block height to update their
commitment fees.

We'll now only have the switch be alerted of new blocks coming in and
links will retrieve the height from it atomically.
2018-06-13 17:41:21 -07:00
Wilmer Paulino
9593e3772e
server: improve initial peer bootstrapping
In this commit, we address an existing issue with regards to the inital
peer bootstrapping stage. At times, the bootstrappers can be unreliable
by providing addresses for peers that no longer exist/are currently
offline. This would lead to nodes quickly entering an exponential
backoff method used to maintain a minimum target of peers without first
achieving said target.

We address this by separating the peer bootstrapper into two stages: the
initial peer bootstrapping and maintaining a target set of nodes to
maintain an up-to-date view of the network. The initial peer
bootstrapping stage has been made aggressive in order to provide such
view of the network as quickly as possible. Once done, we continue on
with the existing exponential backoff method responsible for maintaining
a target set of nodes.
2018-06-13 08:59:36 -07:00
Wilmer Paulino
6a6b490b50
server: add support to automatically advertise external IPs using NAT
traversal

In this commit, we allow our node to automatically advertise its
connection's external IPs on the ports it is currently listening on in
order to accept inbound connections. This is only done when specifying
a NAT traversal technique when starting the daemon.

We also include a handy method that watches for dynamic IP changes in
the background. If a new IP is detected, we'll craft a new node
announcement using the new IP and broadcast it to the network.
2018-06-12 18:36:30 -07:00
Wilmer Paulino
2ad9823945
server: include optional updates when generating a new node announcement 2018-06-12 18:36:29 -07:00
John Griffith
ba0db4ce91
Added some additional comments 2018-06-12 18:32:47 -07:00
John Griffith
1c3df21d18
Added NatPmp option 2018-06-12 18:32:46 -07:00
John Griffith
0d0078baac
Continue with server startup, even if UPNP has failed 2018-06-12 18:32:45 -07:00
John Griffith
b59077109c
Added Upnp support behind a configuration option, moved the logic to the server code 2018-06-12 18:32:44 -07:00
Olaoluwa Osuntokun
15da55effb
server: finish correction of inbound/outbound within the server
In this commit, we finish the fix for the inbound/outbound peer bool in
the server. The prior commit forgot to also flip the inbound/output maps
in Inbound/Outbound peer connected. As a result, the checks were
incorrect and could cause lnd to refuse to accept any more inbound
connections in the case of a concurrent connection attempt.
2018-06-10 23:02:22 -07:00
Olaoluwa Osuntokun
8885c3de8d
server: defer cancelling the outbound connection until the tie-breaker 2018-06-10 23:02:22 -07:00
Olaoluwa Osuntokun
c975753f1e
server: remove pending conn request if we recv a outbound conn after a scheduled callback
In this commit, we ensure that if we're already ignoring a connection,
then we also ignore the pending persistent connection request.
Otherwise, we'll move to accept the replaced connection, but then
continue to attempt connection requests.
2018-06-10 23:02:15 -07:00
Olaoluwa Osuntokun
dcf841c33b server: look up latest addr for node in peerTerminationWatcher
In this commit, we modify the look up for inbound peers to ensure that
we connect to the "freshest" address until we need to execute the
peerTerminationWatcher. We do this as it's possible for a channel to be
created by the remote peer during our session. If we don't query for the
node's address at the latest point, then we'll miss this new node
announcement for the node.
2018-06-10 23:02:10 -07:00
Conner Fromknecht
a670537f4c
server: expose FindPeer for lnpeer.Peer to gossiper 2018-06-08 13:47:57 -07:00
Olaoluwa Osuntokun
849ee5e0dc
Merge pull request #1008 from wpaulino/peer-connection-logic
server: fix inbound/outbound peer connection logic
2018-06-06 18:07:18 -07:00
Wilmer Paulino
09253eacc3
server: use correct inbound value for peerConnected calls
In this commit, we address the meaning of the inbound parameter to
peerConnected. An inbound connection is defined as a connection
initiated by the peer, rather than ourselves.

We also update the inbound value for the peerConnected calls within
OutboundPeerConnected and InboundPeerConnected to reflect the definition
above.
2018-06-06 16:30:40 -07:00
Johan T. Halseth
ac1ab6f516
server: hold mutex shorter during broadcast
We remove the internale broadcastMessage method, and instead handle the
mutex handling within BroadcastMessage. This lets us hold the mutex only
when neccessary.
2018-06-06 12:20:25 +02:00
Johan T. Halseth
b8512c3568
server: don't hold mutex while sending to peer
This commit removes the sendToPeer method from the server, and instead
moves the necessary logic into SendToPeer. This let's us make the mutex
acquisition more fine-grained, only holding it while reading from the
peer map. Earlier it was required to be held during the whole call to
sendToPeer, as the method would access the map internally.
2018-06-06 12:20:06 +02:00
Olaoluwa Osuntokun
d98d4523e1
Merge pull request #1159 from wpaulino/onion-service-support
multi: add onion services support
2018-06-04 21:46:51 -07:00
Wilmer Paulino
2e0484be19
multi: ensure addresses are no longer assumed to be TCP addresses only
In this commit, we go through the codebase looking for TCP address
assumptions and modifying them to include the recently introduced onion
addresses. This enables us to fully support onion addresses within the
daemon.
2018-06-04 20:41:49 -07:00
Wilmer Paulino
08f80b6cf3
server: use advertised address when reestablishing inbound connections
In this commit, we update the way we reestablish inbound connections if
we lose connectivity to a node we have an open channel with. Rather than
fetching the node's advertised port, we'll fetch one of their advertised
addresses instead. This ensure that if the remote node is running behind
a proxy, we do not see the proxy's address.
2018-06-04 20:41:48 -07:00
Wilmer Paulino
1012f876e1
server: add automatic creation of v2 onion services
In this commit, we allow the daemon to use the recently introduced Tor
Controller implementation. This will automatically create a v2 onion
service at startup in order to listen for inbound connections over Tor.

Co-Authored-By: Eugene <crypt-iq@users.noreply.github.com>
2018-06-04 20:41:45 -07:00
Wilmer Paulino
3bb1733fa2
discovery+server: use network-specific functions for fallback SRV lookup
In this commit, we fix a bug where a fallback SRV lookup would leak
information if `lnd` was set to route connections over Tor. We solve
this by using the network-specific functions rather than the standard
ones found in the `net` package.
2018-06-04 20:41:43 -07:00
Wilmer Paulino
3669a40c52
server: add support to advertise onion addresses
In this commit, we allow `lnd` to properly parse onion addresses in
order to advertise them to the network when set through the
`--externalip` flag.

Co-Authored-By: Eugene <crypt-iq@users.noreply.github.com>
2018-06-04 20:41:41 -07:00
maurycy
3be08e69cf multi: 64bit aligment of atomic vars on arm/x86-32 2018-06-04 20:02:34 -07:00
Olaoluwa Osuntokun
d2bcb708f3
server: demote 'sending message' log to trace 2018-06-04 19:50:44 -07:00
Johan T. Halseth
08d9edd059
server: increase updateChan buffer to 2 2018-06-01 08:55:06 +02:00
Olaoluwa Osuntokun
d7b21859d5
server: upon disconnect, prune peer query state from gossiper 2018-05-31 16:30:57 -07:00
Olaoluwa Osuntokun
199bbe2fd4
server: if remote peer knows of gossip queries, skip initial table dump 2018-05-31 16:30:57 -07:00
Olaoluwa Osuntokun
f70f1f318d
server: set the dataloss protect and gossip queries feature bits 2018-05-31 16:30:57 -07:00
Olaoluwa Osuntokun
486f87576c
server: instantiate the chanSeries struct in the gossiper's config 2018-05-31 16:30:56 -07:00
Wilmer Paulino
4a200d28eb
lnd: add interrupt handler to handle shutdown requests while syncing
chain backend
2018-05-23 11:26:07 -04:00
Olaoluwa Osuntokun
f494433cbf
routing+server: add new QueryBandwidth method to reduce outbound failures
In this commit, we introduce a new method to the channel router's config
struct: QueryBandwidth. This method allows the channel router to query
for the up-to-date available bandwidth of a particular link. In the case
that this link emanates from/to us, then we can query the switch to see
if the link is active (if not bandwidth is zero), and return the current
best estimate for the available bandwidth of the link. If the link,
isn't one of ours, then we can thread through the total maximal
capacity of the link.

In order to implement this, the missionControl struct will now query the
switch upon creation to obtain a fresh bandwidth snapshot. We take care
to do this in a distinct db transaction in order to now introduced a
circular waiting condition between the mutexes in bolt, and the channel
state machine.

The aim of this change is to reduce the number of unnecessary failures
during HTLC payment routing as we'll now skip any links that are
inactive, or just don't have enough bandwidth for the payment. Nodes
that have several hundred channels (all of which in various states of
activity and available bandwidth) should see a nice gain from this w.r.t
payment latency.
2018-05-14 16:23:54 -07:00
Olaoluwa Osuntokun
b73eef12b3
Merge pull request #945 from jimpo/decayedlog
Move DecayedLog from lightning-onion to htlcswitch.
2018-05-10 20:06:53 -07:00
Olaoluwa Osuntokun
f0050e7ffb
Merge pull request #1201 from lightningnetwork/peer-async-disconnect
server: Peer Async Disconnect w/ Scheduled peerConnected
2018-05-10 17:05:16 -07:00
Olaoluwa Osuntokun
b271ed5ffb
Merge pull request #1199 from cfromknecht/queue-msg-err-chans
peer/server: Remove Broadcast err chans
2018-05-10 16:55:57 -07:00
Conner Fromknecht
8c04dd0030
server: add peer connection callback scheduling
This commit adds a simple scheduling mechanism for
resolving potential deadlocks when dropping a stale
connection (via pubkey inspection).

Ideally, we'd like to wait to activate a new peer until
the previous one has exited entirely. However, the current
logic attempts to disconnect (and wait) until the peer
has been cleaned up fully, which can result in
deadlocks with other portions of the codebase, since
other blocking methods may also need acquire the mutex
before the peer can exit.

When existing connections are replaced, they now
schedule a callback that is executed inside the
peerTerminationWatcher. Since the peer now waits for
the clean exit of the prior peer, this callback is
now executed with a clean slate, adds the peer to
the server's maps, and initiates peer's Start() method.
2018-05-08 16:37:14 -07:00
Conner Fromknecht
d20adc8e0e
server: use nil errChan for broadcasts
This skips creating errChans when sending messages to
peer during broadcast. This should be a minor memory
optimization, as well as not requiring channel sends
on those which will never be read.
2018-05-08 16:35:49 -07:00
Olaoluwa Osuntokun
72f48b6abe
htlcswitch+server: ensure we always send an update w/ a TempChannelFailure
In this commit, we ensure that any time we send a TempChannelFailure
that's destined for a multi-hop source sender, then we'll always package
the latest channel update along with it.
2018-05-08 13:00:28 -04:00
Jim Posen
56e65339e0 multi: Complete upgrade to new sphinx package interface. 2018-05-02 00:22:25 -07:00
Johan T. Halseth
e9eab3f79f
server: reliably hand off breach from the ChainArbitrator to the breachArb
This commit make the server populate the ChainArbitrator's
ContractBreach method, by a method that will reliably handoff the breach
event ot the breachArbiter. The server will now forward the breach event
to the breachArbiter, and only let the closure return a non-nil error
when the breachArbiter ACKs this event.
2018-05-02 08:43:32 +02:00
Sean Erle Johnson
938d367232 server: change PeerNotFound to PeerNotConnected 2018-04-18 12:34:57 -07:00
Dimitris Tsapakidis
4009f7f874 multi: fix typos in comments 2018-04-17 19:03:27 -07:00
Olaoluwa Osuntokun
9d29c4f43d
server: only swap out the port for inbound connections
Note that the check is actually reversed to the quirk atm in the server
logic, where inbound and outbound are reversed.

Fixes #1063.
2018-04-09 19:55:01 -07:00
Olaoluwa Osuntokun
de0a2ee49b
server: don't directly mutate net.TCPAddr for inbound connections to set peer port
In this commit, we fix a minor logging bug introduced in a prior commit.
Before we would directly modify the *net.TCPAddr that was a part of the
brontide connection. This achieved our goal, but would print weird log
messages as we mutated the port in the already established connection.

In this commit, we fix that by ensuring we create a copy iff it's a
net.TCPAddr, then modify that and replace the instance in the
lnwire.NetAddress.

Fixes #991.
2018-04-02 16:14:33 -07:00
Olaoluwa Osuntokun
9b729654f6
server: remove all pending conn reqs within DisconnectPeer 2018-03-31 16:26:19 -07:00
Olaoluwa Osuntokun
6be6b48e09
Merge pull request #840 from halseth/openchannel-csv-delay
Add CSV delay flag to openchannel
2018-03-31 16:05:08 -07:00
Conner Fromknecht
2490b9b6e3
server: cleanup persistent connection retries
This commits changes the behavior of our connection
reestablishment, and resolves some minor issues that
could lead to uncancelled requests or an infinite
connection loop.

 - Will not attempt to Remove connection requests with
   an ID of 0. This can happen for reconnect attempts
   that get scheduled, but have not started at the
   time the server cancels the connection requests.

 - Adds a per-peer cancellation channel, that is
   closed upon a successful inbound or outbound
   connection. The goroutine spwaned to handle the
   reconnect by the peerTerminationWatch now
   selects on this channel, and skips reconnecting
   if it is closed before the backoff matures.

 - Properly computes the backoff when no entry in
   persistentPeersBackoff is found. Previously, a
   value of 0 would be returned, cause all subsequent
   backoff attempts to use a backoff of 0.

 - Cancels a peers retries and remove connections
   immediately after receiving an inbound connection,
   to mimic the structure of OutboundPeerConnected.

 - Cancels all persistent connection requests after
   calling DisconnectPeers.

 - Allow additional connection attempts to peers, even if
   there already exists a pending connection attempt.
2018-03-31 00:51:12 -07:00
Olaoluwa Osuntokun
4480052cd6
server: ensure a default backoff is always used 2018-03-30 19:11:12 -07:00
Olaoluwa Osuntokun
d34c37f3dd
server: when constructing peer addr's attempt to locate proper port, fallback to default port
In this commit, we fix an existing bug within the codebase: if a peer
connected to us inbound, then we'd attempt to use the assigned port when
re-establishing a connection to them. We fix this issue in this commit
by adding a new method to look up any advertisements for the peer, and
use the specified port that matches our connection attempt. If we can't
find a proper advertisement, then we'll simply use the default peer
port.
2018-03-30 15:59:11 -07:00
Olaoluwa Osuntokun
b2e1d6988c
server: don't immediately add bootstrap peer to set of persistent connections 2018-03-30 15:16:18 -07:00
Olaoluwa Osuntokun
90636b49b2 server: properly format peer pubkey in NotifyWhenOnline logging msg
Fixes #978.
2018-03-30 13:15:49 -07:00
Johan T. Halseth
6f98803967
server: add remoteCsvDelay to openChanReq 2018-03-22 14:53:59 +01:00
Olaoluwa Osuntokun
9ec80e2083
server: properly segment the nursery store according to active net 2018-03-14 18:27:28 -07:00
Conner Fromknecht
a9904b328f
servrer: pass ExtractErrorEncrypter 2018-03-13 16:33:29 -07:00
Olaoluwa Osuntokun
800eea931f
build+multi: switch from bolt to bbolt
In this commit, we switch from boltbd/bolt to coreos/bbolt as the
former is no longer being actively maintained.
2018-03-10 19:01:13 -08:00
Olaoluwa Osuntokun
2a6876bde2
server: ensure the replay database is stored under the graph+network namespace
In this commit we modify the storage location of the sphinx replay
database to be under the precise network, and not only the graph sub
directory. Before this commit, due to the usage of filepath.Dir(), the
db would lie under /graph/, rather than say, /graph/simnet.
2018-03-10 13:02:29 -08:00
Conner Fromknecht
c976a550cb
server: initialize switch with circuit db 2018-03-09 21:18:15 -08:00
Conner Fromknecht
a4d8b30367
server: initialize server with persistent sphinx router 2018-03-08 21:12:05 -05:00
Olaoluwa Osuntokun
a540003bb9
server: set the FwdingLog attribute in the switch's config 2018-03-06 13:56:12 -05:00
Johan T. Halseth
3dc9e3c7d4
server: express fee rates using fee rate types 2018-02-26 22:42:26 +01:00
MeshCollider
2c2ed3c6a9 multi: Unify use of NodeKey in log messages 2018-02-19 17:48:39 -08:00
MeshCollider
4c42079436 multi: ensure NodeKey is set in rpc/cli 2018-02-19 17:48:39 -08:00
MeshCollider
915c4201b9 multi: remove internal peer_id usage 2018-02-19 17:48:39 -08:00
Conner Fromknecht
a03e95410b
server: adds truncated exponential backoff + rand for retry
This commit adds an backoff policy to the peer termination
watcher to avoid getting stuck in tight connection loops
with failing peers. The maximum backoff is now set to 128s,
and each backoff is randomized so that two instances using
the same algorithm have some hope of desynchronizing.
2018-02-08 18:15:20 -08:00
Olaoluwa Osuntokun
22951cb364
lnd: account for new lnwire.Sig API and channeldb API changes 2018-02-06 20:14:33 -08:00
Daniel McNally
8543497dcc multi: fixing it's/its typos in comments 2018-02-06 19:13:07 -08:00
practicalswift
a93736d21e multi: comprehensive typo fixes across all packages 2018-02-06 19:11:11 -08:00
MeshCollider
4b1cc98808 multi: apply roasbeef diff to support incoming socks.ProxiedAddr 2018-02-05 17:37:46 -08:00
MeshCollider
4affab7bd7 multi: Addressing Tor support review comments 2018-02-05 17:37:46 -08:00
nsa
698df2ac16 torsvc: added new type that multiplexes torsvc and net packages
This commit adds the `lnnet` package which contains an
implementation of the newly created LightningNet interface which
multiplexes the Dial and DNS-related functions to use net
by default and torsvc if a flag is specified. This modularization
makes for cleaner code.
2018-02-05 17:37:46 -08:00
nsa
8c482f2be7 multi: Added a NetInterface to clean up config.go
This commit adds a new interface named NetInterface and two
implementations of it: RegularNet & TorProxyNet. These two structs
are used in config.go in an attempt to clean up the code and
abstract away the dialer and DNS functions.
2018-02-05 17:37:46 -08:00
nsa
e132ad8433 torsvc: Added new module to house Tor functions
This commit adds a new module named 'torsvc' which houses all Tor
functionality in an attempt to isolate it and make it reusable in
other projecs. Some additional tweaks were made to config.go and
to the bootstrapper.
2018-02-05 17:37:46 -08:00