Commit Graph

79 Commits

Author SHA1 Message Date
Johan T. Halseth
3f0a525331
discovery test: update gossiper test to account for timestamp deduping 2018-01-09 13:09:28 +01:00
Johan T. Halseth
ea95f37277
discovery: keep newest messages when deduping in gossiper
This commit makes the gossiper aware of the timestamps
of ChannelUpdates and NodeAnnouncements, such that it
only keeps the newest message when deduping. Earlier
it would always keep the last received message, which
in some cases could be outdated.
2018-01-09 13:09:25 +01:00
Johan T. Halseth
2ddd139084 discovery: check proof for nilness before creating chanAnn
This commit makes sure we are not attempting to create a
channel announcement with a nil ChannelAuthProof, as that
could cause a crash at startup whe the gossiper would
attempt to reprocess an edge coming from the fundingmanager.

It also makes sure we check the correct error returned from
processRejectedEdge.
2018-01-02 19:51:38 +01:00
Olaoluwa Osuntokun
6b0f984e31
discovery: update tests to reflect new broadcast related changes 2017-12-26 16:29:37 +01:00
Olaoluwa Osuntokun
38715ca768
discovery: refactor re-processing rejected announcements into new method 2017-12-26 16:28:23 +01:00
Olaoluwa Osuntokun
68dabe3594
discovery: update usage of d.cfg.Broadcast to reflect recent API change
When broadcasting a set of messages, we must now call broadcast for
each (msg, …senders) tuple, rather than just calling it once for the
entire batch.
2017-12-26 16:26:34 +01:00
Olaoluwa Osuntokun
f45502f890
discovery: update message processing to emit networkMsg rather than lnwire.Message
In this commit, we make an incremental step towards page of the new
feature of deDupedAnnoucnements to return the set of senders for each
message. All methods the process new channel announcements, will now
return an instance of networkMsg rather than lnwire.Message. This will
allow passing the returned announcement directly into
deDupedAnnoucnements.AddMsg().
2017-12-26 16:23:12 +01:00
Olaoluwa Osuntokun
f1b40e0b4d
discovery: modify deDupedAnnouncements to keep track of senders for each msg
In this commit, we modify the deDupedAnnouncements struct slightly. The
element of this struct will now keep track of the set of senders that
sent a particular message. Each time a message is added, we’ll replace
the new message with the old (as normal), but we’ll also add the new
sender to the set of known senders.

With this new feature, we’ll be able to avoid re-sending a message to
the peer that sent it to us in the first place.
2017-12-26 16:19:03 +01:00
Matt Drollette
d6172ca8b4 discovery: correctly format ipv6 addresses from dns seed 2017-12-22 20:12:35 +01:00
Johan T. Halseth
c3aa23f061 discovery test: update gossiper test for new database structure 2017-12-19 13:01:59 -06:00
Johan T. Halseth
e3ae204fcb discovery: make gossiper able to resend failed AnnounceSignatures
This commit makes the gossiper track the state of a local
AnnounceSignature message, such that it can retry sending
it to the remote peer if needed. It will also persist this
state in the WaitingProofStore, such that it can resume
from this state at startup.
2017-12-19 13:01:59 -06:00
Matt Drollette
adf0d98194 multi: fix several typos in godoc comments 2017-12-17 18:40:05 -08:00
Johan T. Halseth
b74a281b57 discovery test: test for remote ChannelUpdate for unknown channel
This commit adds a test that ensures that if we receive a
ChannelUpdate for a channel we don't know about, it will
be reprocessed after we receive a ChannelAnnouncement for
that channel.
2017-12-17 18:35:34 -08:00
Johan T. Halseth
db829cd0c5 discovery: reprocess premature ChannelUpdates
This commit makes the gossiper store received ChannelUpdates
that is not for any known channel in a map, such that they
can be reprocessed when the ChannelAnnouncement arrives.

This is done to handle the case where we receive a ChannelUpdate
from our channel counterparty before we have been able to process
our own local ChannelAnnouncement.
2017-12-17 18:35:34 -08:00
Johan T. Halseth
10b838e9b4 gossiper: private channel cleanup + comments
This commit adds some comments and does some cleanup
of the logic that makes sure non-public channels
(channels with no AuthProof) are not broadcasted
to the network.
2017-12-17 18:35:34 -08:00
nsa
dab7f31e44 gossiper: Only send channel updates for edges with AuthProof. 2017-12-17 18:35:34 -08:00
Olaoluwa Osuntokun
37c54153fa
discovery: properly set node's color when syncing graph state
This commit fixes an existing bug wherein we would blank out a node’s
color instead of properly setting the field when syncing graph state
with another node This would cause the node to reject the node
announcement and we would generate an we would invalidate the signature
of the node announcement. We fix this simply by properly setting the
node announcement.
2017-12-02 18:33:21 -08:00
Olaoluwa Osuntokun
ee7c3ff01c
discovery: properly set node's color field when adding NodeAnnouncement to router
In this commit, we fix an existing bug when processing new node
announcement. Before this commit, we wouldn’t also copy over the color
field of a node’s announcement. As a result, when went to synchronize
our graph state with that of a connecting peer, we would generate an
invalid node announcement. We fix this by properly setting the color
field of a node.
2017-12-02 18:28:41 -08:00
Olaoluwa Osuntokun
3802cb90df
discovery: publicly export announcement validation related functions 2017-12-01 19:31:54 -08:00
Olaoluwa Osuntokun
12a0488bc6
discovery: use lnwire.ChanUpdateFlag masks when examinig ChannelUpdate msgs
In this commit, we now properly examine the Flag field within the
ChannelUpdate message as a bitfield. Before this commit we would
manually check the flags for zero or one. This was incorrect as a their
bit has now been defined. To properly dispatch the messages, we’ll now
treat it properly as a bitmask.
2017-11-30 22:37:21 -08:00
Olaoluwa Osuntokun
3e3de26ac9
discovery: set proper flag within createChanAnnouncement
In this commit, we fix an existing bug within the
createChanAnnouncement function. Before we would set the flag to be 0,
or 1 depending on which edge it was. This was incorrect as since then
additional flags have been defined. We now properly set the entire
flag, rather than taking a shortcut. With this, we’ll properly
advertise all ChannelUpdate announcements.
2017-11-30 22:33:00 -08:00
Olaoluwa Osuntokun
c0b8c29382
discovery: continue in loop after processing announcement signatures 2017-11-29 18:35:19 -08:00
Olaoluwa Osuntokun
4ab16b5c91
discovery: process AnnouncementSignatures msgs serially 2017-11-29 17:53:21 -08:00
Olaoluwa Osuntokun
3067d05ae8
discovery: validate incoming announcements in parallel 2017-11-29 16:45:14 -08:00
Olaoluwa Osuntokun
2dcd2b8a6d
discovery: add a mutex in order to make deDupedAnnouncements thread-safe 2017-11-29 16:21:16 -08:00
Olaoluwa Osuntokun
2861f6e5f4
discovery: add additional comments to TestDeDuplicatedAnnouncements 2017-11-15 18:25:33 -08:00
Laura Cressman
918ef2808f gossiper_test: add tests for deDupedAnnouncements struct
Add tests for new deDupedAnnouncements struct in gossiper_test.
Test the various functionalities of the struct - that empty
struct contains no announcements, that announcements of each type
can be added and properly de-duplicated, that the batch of
announcements is delivered correctly, and that after reset the
struct again contains no announcements.
2017-11-15 16:50:19 -08:00
Laura Cressman
ed6ad22e85 config+server+networktest: make trickleDelay configurable
Add option to set trickleDelay for AuthenticatedGossiper in
command line, with default value of 300 milliseconds. Pass this
value to newServer, which uses it when creating a new instance of
AuthenticatedGossiper. Also set this value to 300 milliseconds when
creating nodes in integration tests.
2017-11-15 16:50:19 -08:00
Laura Cressman
39d38da732 discovery: create deDupedAnnouncements struct in gosspier.go
For Part 1 of Issue #275. Create isolated private struct in
networkHandler goroutine that will de-duplicate
announcements added to the batch. The struct contains maps
for each of channel announcements, channel updates, and
node announcements to keep track of unique announcements.

The struct has a Reset method to reset stored announcements, an
AddMsg(lnwire.Message) method to add a new message to the current
batch, and a Batch method to return the set of de-duplicated
announcements.

Also fix a few minor typos.
2017-11-15 16:50:19 -08:00
Olaoluwa Osuntokun
8c181b6f4e
discovery: return an error if ChannelUpdate has unknown flags
In this commit, we fix an existing bug that could result in a panic if
we received a ChannelUpdate message with an unknown set of flags. If
the flag wasn’t set to zero or one, then the pubKey parameter would be
still nil when we attempted to validate it, causing an error to occur.

We remedy this by instead returning an error if the flags are unknown.
In a future commit, we will properly handle the set of flags that
indicates the channel should be disabled.
2017-11-11 14:59:16 -08:00
Olaoluwa Osuntokun
65cf83489a
discovery: fix linter warning 2017-10-30 19:04:00 -07:00
Olaoluwa Osuntokun
5b226a9d37
discovery: add TCP fallback for DNSSeedBootstrapper
In this commit, we add a TCP fallback option for the
DNSSeedBootstrapper. We’ve received many reports of users unable to
bootstrap properly to the network due to the size of the SRV records we
currently return. It has been observed that many revolvers will simply
truncate and ignore the response due to the (current size).

To resolve (no pun intended) we now attempt to detect this failure mode
and will fallback to a manual TCP resolution in the case that our SRV
query over UDP fails. We do this by querying the special record at the
"soa." sub-domain of supporting DNS servers. The retuned IP address
will be the IP address of the authoritative DNS server. Once we have
this IP address, we'll connect manually over TCP to request the SRV
record. This is necessary as the records we return are currently too
large for a class of resolvers, causing them to be filtered out.
2017-10-30 19:00:27 -07:00
Conner Fromknecht
3b2e4caa93 discovery/gossiper: isolate sync with node from query
This commit refactors the SynchronizeNode logic such that
  it can be called without interacting with the gossiper's
  main execution loop. This method does not require access
  to any of the gossiper's internal state, making the change
  fairly straightforward. The primary motivation behind
  this change is to minimize the possibility of introducing
  deadlock scenarios between the gossiper and server.
2017-10-27 15:48:37 -07:00
Jim Posen
9fd77a6e40 multi: Update lnd to use new feature vector API. 2017-10-17 22:47:20 -07:00
Olaoluwa Osuntokun
03f9479eb4
discovery: only interpret remote announcements as pre-mature
This commit fixes a slight bug in the announcement processing logic
within the AuthenticatedGossiper. Before this commit, it was possible
for us to ignore one of our now announcements due to it being
pre-mature, rendering (atm) the channel unusable by the ChannelRouter
itself. To fix this, we know only check for a pre mature announcement
iff the message is coming from a remote node.
2017-10-17 19:44:13 -07:00
Olaoluwa Osuntokun
490e0d0f46
discovery: broadcast OG chan ann in retransmitStaleChannels 2017-10-04 20:46:12 -07:00
Olaoluwa Osuntokun
0d28bb14cb
discovery: also return latest ChannelAnnouncement from updateChannel
This commit adds an additional return value to the updateChannel
method. We also now return the original ChannelAnnouncement, this can
be useful as it let’s the caller ensure that the channel announcement
will be broadcast along side the new channel update.
2017-10-04 20:46:10 -07:00
Olaoluwa Osuntokun
4be2e95a78
discovery: fix boltdb deadlock bug in ann retrans, retrans at start
This commit does two things. First we fix a deadlock bug within boltdb
that could arise when the channel router attempted to open a
transaction, while the retransmission loop was attempting to send a
message to the channel router (circular wait). Second, we’ve refactored
out the retransmission into its own function. This allows us to kick
off retransmission as soon as the AuthenticatedGossiper is created.
2017-10-04 20:46:10 -07:00
Olaoluwa Osuntokun
e81689057a
discovery+routing: remove DeleteEdge from ChannelGraphSource interface
This commit removes the recently added DeleteEdge method from the
ChannelGraphSource interface as it’s no longer needed.
2017-10-04 20:46:08 -07:00
Olaoluwa Osuntokun
81cd954cfc
discovery: don't prune *our* channels during retransmission tick
This commit modifies the recently modified logic for self-channel
retransmission to exclude pruning *our* channels which haven’t been
updated since the broadcastInterval. Instead, we only re-broadcast
channels of ours that haven’t been updated in 24 hours.
2017-10-04 20:46:08 -07:00
Brandon
cce75bbb14 discovery: add retransmit delay to gosipper_test 2017-10-04 20:42:27 -07:00
Brandon
e1ea0aafe8 discovery: adding DeleteEdge to gossiper_test 2017-10-04 20:42:17 -07:00
Brandon
3907ae65c2 routing+discovery: implement 2-week network view pruning 2017-10-04 20:40:21 -07:00
Olaoluwa Osuntokun
c529597ff9
discovery: add more detail to error logging in processNetworkAnnouncement 2017-09-12 17:12:22 +02:00
Olaoluwa Osuntokun
fe0a7b6a09
multi: fix linter errors 2017-09-03 17:05:11 -07:00
Olaoluwa Osuntokun
f823a860c8
discovery: add new interface NetworkPeerBootstrapper w/ 2 impls
This commit adds a new interface the to discovery package:
NetworkPeerBootstrapper. The NetworkPeerBootstrapper interface is meant
to be used to bootstrap a new peer joining the network to the set of
existing active peers within the network. Callers are encouraged to
utilize several boostrappers in series as redundant sources of
information. The MultiSourceBootstrap function will takes a set of
boostrappers, and compose their outputs into a single unified set of
addresses.

Two concrete implementations of the NetworkPeerBootstrapper interface
have been added as a part of this commit: the ChannelGraphBootstrapper
and the DNSSeedBootstrapper. The former will utilize the authenticated
node advertisements within the calling nodes view to boostrap new
connections. The latter will use a set of BOLT-0010 compliant DNS seeds
to query. This DNS seeding more will likely be used by nodes initial
joining the network, as they may not yet have the channel graph as they
haven’t connected to any peers.
2017-09-03 16:51:17 -07:00
Olaoluwa Osuntokun
0b4ff2aabb
discovery: ignore any incoming channel ann's for an unknown chain
This commit fixes an existing bug in the announcement processing of the
authenticated gossiper. We will now only examine an incoming
announcement for validity if it targets the chain that we’re currently
active on.
2017-09-03 16:41:09 -07:00
Olaoluwa Osuntokun
1e513875e5
discovery: rename service.go to gossiper.go 2017-09-03 16:21:10 -07:00
Olaoluwa Osuntokun
f1501ebc95
discovery: rename validation.go to ann_validation.go 2017-09-03 16:18:28 -07:00
Olaoluwa Osuntokun
d0b192c636
discovery: print proper error message when sigs fail to validate 2017-08-23 11:34:47 -07:00