Commit Graph

187 Commits

Author SHA1 Message Date
Felix Lange 9b46986edc
all: use rlp.DecodeBytes instead of rlp.Decode where possible (#27994) 2023-08-24 11:47:42 +03:00
Péter Szilágyi be65b47645
all: update golang/x/ext and fix slice sorting fallout (#27909)
The Go authors updated golang/x/ext to change the function signature of the slices sort method. 
It's an entire shitshow now because x/ext is not tagged, so everyone's codebase just 
picked a new version that some other dep depends on, causing our code to fail building.

This PR updates the dep on our code too and does all the refactorings to follow upstream...
2023-08-12 00:04:12 +02:00
Felix Lange a426999fc9
p2p/discover: filter bootnodes by netrestrict (#27701)
This prevents an issue where the node would attempt to contact the bootstrap
nodes even if they weren't contained in the netrestrict list.
2023-07-12 12:01:38 +02:00
lightclient cbf2579691
p2p, p2p/discover: add dial metrics (#27621)
This PR adds metrics for p2p dialing, which gives us visibility into the quality of the dial 
candidates  returned by our discovery methods.
2023-07-06 16:20:31 +02:00
Exca-DK 5520cd97a1
p2p/discover: swap verification order in discv4 ping handler (#27532)
In all other UDPv4 methods, the deadline is checked first. It seems weird to me that ping is an exception. Deadline comparison is also less resource intensive.

Co-authored-by: Exca-DK <Exca-DK@users.noreply.github.com>
2023-06-22 10:06:14 +02:00
Dan Laine 289c6c3b15
p2p: use slices package for sorting (#27494)
Co-authored-by: Felix Lange <fjl@twurst.com>
2023-06-19 07:48:12 +02:00
Felix Lange ac86547b01
p2p/discover: add Table configuration and Nodes method (#27387)
* p2p/discover: remove ReadRandomNodes

Even though it's public, this method is not callable by code outside of
package p2p/discover because one can't get a valid instance of Table.

* p2p/discover: add Table.Nodes

* p2p/discover: make Table settings configurable

In unit tests and externally developed cmd/devp2p test runs, it can be
useful to tune the timer intervals used by Table.
2023-05-31 13:37:10 +02:00
ucwong ae7db289b8
p2p: initialize maps with known size (#27229) 2023-05-10 10:52:26 +02:00
Martin Holst Swende 7d1ebe51b7
p2p/discover: fix lint nit (#27206) 2023-05-02 04:36:11 -04:00
ucwong a865e28f28
p2p/discover : typo (#27193) 2023-04-28 21:34:08 +03:00
Felix Lange 47cdea5ac5
p2p/discover: concurrent TALKREQ handling (#27112)
This changes TALKREQ message processing to run the handler on separate goroutine,
instead of running on the main discv5 dispatcher goroutine. It's better this way because
it allows the handler to perform blocking actions.

I'm also adding a new method TalkRequestToID here. The method allows implementing
a request flow where one node A sends TALKREQ to another node B, and node B later
sends a TALKREQ back. With TalkRequestToID, node B does not need the ENR of A to
send its request.
2023-04-28 11:03:43 +02:00
Exca-DK f8f95346f9
p2p/discover: add traffic metrics (#27008)
Co-authored-by: Exca-DK <dev@DESKTOP-RI45P4J.localdomain>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
2023-04-25 12:12:34 +02:00
Martin Holst Swende eca3d39c31
p2p/discover: pass invalid discv5 packets to Unhandled channel (#26699)
This makes it possible to run another protocol alongside discv5, by reading 
unhandled packets from the channel.
2023-03-14 12:40:40 +01:00
Martin Holst Swende 4d3525610e
all: remove deprecated uses of math.rand (#26710)
This PR is a (superior) alternative to https://github.com/ethereum/go-ethereum/pull/26708, it handles deprecation, primarily two specific cases. 

`rand.Seed` is typically used in two ways
- `rand.Seed(time.Now().UnixNano())` -- we seed it, just to be sure to get some random, and not always get the same thing on every run. This is not needed, with global seeding, so those are just removed. 
- `rand.Seed(1)` this is typically done to ensure we have a stable test. If we rely on this, we need to fix up the tests to use a deterministic prng-source. A few occurrences like this has been replaced with a proper custom source. 

`rand.Read` has been replaced by `crypto/rand`.`Read` in this PR.
2023-02-16 14:36:58 -05:00
Felix Lange a251bca67c
p2p/discover: add more packet information in logs (#26307)
* p2p/discover: add more packet information in logs

This adds more fields to discv5 packet logs. These can be useful when
debugging multi-packet interactions.

The FINDNODE message also gets an additional field, OpID for debugging
purposes. This field is not encoded onto the wire.

I'm also removing topic system related message types in this change.
These will come back in the future, where support for them will be
guarded by a config flag.

* p2p/discover/v5wire: rename 'Total' to 'RespCount'

The new name captures the meaning of this field better.
2023-01-03 12:36:38 +01:00
zhiqiangxu a9dfac0332
p2p/discover: improve nodesByDistance.push code (#26019)
This improves readability of function 'push'.

sort.Search(N, ...) will at most return N when no match, so ix should be compared
with N. The previous version would compare ix with N+1 in case an additional item
was appended. No bug resulted from this comparison, but it's not easy to understand
why.

Co-authored-by: Felix Lange <fjl@twurst.com>
2022-12-07 23:31:47 +01:00
RichΛrd c1aa1db69e
p2p/discover: add config option for discv5 protocol ID (#26041)
This option is occasionally useful for advanced uses of the discv5 protocol.

Co-authored-by: Felix Lange <fjl@twurst.com>
2022-11-30 22:03:34 +01:00
Felix Lange 9afc6816d2
common/lru: add generic LRU implementation (#26162)
It seems there is no fully typed library implementation of an LRU cache.
So I wrote one. Method names are the same as github.com/hashicorp/golang-lru,
and the new type can be used as a drop-in replacement.

Two reasons to do this:

- It's much easier to understand what a cache is for when the types are right there.
- Performance: the new implementation is slightly faster and performs zero memory
   allocations in Add when the cache is at capacity. Overall, memory usage of the cache
   is much reduced because keys are values are no longer wrapped in interface.
2022-11-14 15:41:56 +01:00
Felix Lange 9027ee0b45
p2p/discover: improve discv5 NODES response packing (#26033)
Instead of using a limit of three nodes per message, we can pack more nodes
into each message based on ENR size. In my testing, this halves the number
of sent NODES messages, because ENR size is usually < 300 bytes.

This also adds RLP helper functions that compute the encoded size of
[]byte and string.

Co-authored-by: Martin Holst Swende <martin@swende.se>
2022-11-07 19:19:02 +01:00
Justin Traglia 621b423ac1
p2p/discover: fix handling of distance 256 in lookupDistances (#26087)
Noticed that lookupDistances for FINDNODE requests didn't consider 256 a valid
distance. This is actually part of the example in the comment above the
function, surprised that wasn't tested before.
2022-11-02 14:50:07 +01:00
Martin Holst Swende ee301c750b
all: fix docstrings 2022-10-04 09:18:02 +02:00
Boqin@MetaSecureLabs e6d4aedb8c
p2p: add channel buffers to avoid goroutine leaks in tests (#24929) 2022-09-23 10:51:12 +02:00
Seungbae Yu 0c1888a367
p2p/discover/v5wire: reject packets smaller than 63 bytes (#25740) 2022-09-12 15:02:03 +02:00
Felix Lange b628d72766
build: upgrade to go 1.19 (#25726)
This changes the CI / release builds to use the latest Go version. It also
upgrades golangci-lint to a newer version compatible with Go 1.19.

In Go 1.19, godoc has gained official support for links and lists. The
syntax for code blocks in doc comments has changed and now requires a
leading tab character. gofmt adapts comments to the new syntax
automatically, so there are a lot of comment re-formatting changes in this
PR. We need to apply the new format in order to pass the CI lint stage with
Go 1.19.

With the linter upgrade, I have decided to disable 'gosec' - it produces
too many false-positive warnings. The 'deadcode' and 'varcheck' linters
have also been removed because golangci-lint warns about them being
unmaintained. 'unused' provides similar coverage and we already have it
enabled, so we don't lose much with this change.
2022-09-10 13:25:40 +02:00
Abirdcfly c394c308e6
all: remove duplicate word in comments (#25618)
Signed-off-by: Abirdcfly <fp544037857@gmail.com>

Signed-off-by: Abirdcfly <fp544037857@gmail.com>
2022-08-29 11:16:34 +03:00
Justin Traglia 2c5648d891
all: fix some typos (#25551)
* Fix some typos

* Fix some mistakes

* Revert 4byte.json

* Fix an incorrect fix

* Change files to fails
2022-08-19 09:00:21 +03:00
Ha ĐANG a9ef135e2d
p2p/discover: apply netrestrict in discv5 response handler (#25304) 2022-07-15 18:37:51 +02:00
Seungbae.yu b3fc9574ec
p2p/discover: fix typos in comments (#25272) 2022-07-10 10:15:54 +02:00
Håvard Anda Estensen 138f0d7494
p2p: use errors.Is for error comparison (#24882)
Co-authored-by: Felix Lange <fjl@twurst.com>
2022-06-07 17:27:21 +02:00
Martin Holst Swende 403624a4a1
p2p/discover: fix panicky test (#25038) 2022-06-07 12:15:22 +02:00
Felix Lange 9244d5cd61
all: update license headers and AUTHORS from git history (#24947) 2022-05-24 20:39:40 +02:00
Håvard Anda Estensen 07508ac0e9
all: replace uses of ioutil with io and os (#24869) 2022-05-16 11:59:35 +02:00
Taeik Lim 85064ed09b
all: fix 'the the' in comments (#24036) 2021-12-02 15:42:09 +01:00
Ikko Ashimine fb7da82dde
p2p: fix typo in v4wire.go
Neigbors -> Neighbors
2021-11-10 22:18:12 +09:00
Guillaume Ballet 0183256e7f
all: fix warning flagging the use of DeepEqual on error (#23624)
* core: fix warning flagging the use of DeepEqual on error

* apply the same change everywhere possible

* revert change that was committed by mistake

* fix build error

* Update config.go

* revert changes to ConfigCompatError

* review feedback

Co-authored-by: Felix Lange <fjl@twurst.com>
2021-10-19 17:06:47 +02:00
Péter Szilágyi 6ef3a16869
p2p/enode: use unix timestamp as base ENR sequence number (#19903)
This PR ensures that wiping all data associated with a node (apart from its nodekey)
will not generate already used sequence number for the ENRs, since all remote nodes
would reject them until they out-number the previously published largest one.

The big complication with this scheme is that every local update to the ENR can
potentially bump the sequence number by one. In order to ensure that local updates
do not outrun the clock, the sequence number is a millisecond-precision timestamp,
and updates are throttled to occur at most once per millisecond.

Co-authored-by: Felix Lange <fjl@twurst.com>
2021-09-07 12:36:48 +02:00
baptiste-b-pegasys 860184d542
p2p: remove term "whitelist" (#23295)
Co-authored-by: Felix Lange <fjl@twurst.com>
2021-07-29 17:50:18 +02:00
Felix Lange 3e6f46caec
p2p/discover/v4wire: use optional RLP field for EIP-868 seq (#22842)
This changes the definitions of Ping and Pong, adding an optional field
for the sequence number. This field was previously encoded/decoded using
the "tail" struct tag, but using "optional" is much nicer.
2021-05-18 11:48:41 +02:00
Nishant Das 34f3c9539b
p2p/discover: improve discv5 handling of IPv4-in-IPv6 addresses (#22703)
When receiving PING from an IPv4 address over IPv6, the implementation sent
back a IPv4-in-IPv6 address. This change makes it reflect the IPv4 address.
2021-04-23 18:18:10 +02:00
Felföldi Zsolt d96870428f
les: UDP pre-negotiation of available server capacity (#22183)
This PR implements the first one of the "lespay" UDP queries which
is already useful in itself: the capacity query. The server pool is making
use of this query by doing a cheap UDP query to determine whether it is
worth starting the more expensive TCP connection process.
2021-03-01 10:24:20 +01:00
Nishant Das 429e7141f2
p2p/discover: fix deadlock in discv5 message dispatch (#21858)
This fixes a deadlock that could occur when a response packet arrived
after a call had already received enough responses and was about to
signal completion to the dispatch loop.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-11-25 22:16:36 +01:00
Felix Lange 524aaf5ec6
p2p/discover: implement v5.1 wire protocol (#21647)
This change implements the Discovery v5.1 wire protocol and
also adds an interactive test suite for this protocol.
2020-10-14 12:28:17 +02:00
Felix Lange 5e86e4ed29
p2p/discover: remove use of shared hash instance for key derivation (#21673)
For some reason, using the shared hash causes a cryptographic incompatibility
when using Go 1.15. I noticed this during the development of Discovery v5.1
when I added test vector verification.

The go library commit that broke this is golang/go@97240d5, but the
way we used HKDF is slightly dodgy anyway and it's not a regression.
2020-10-08 11:19:54 +02:00
Guillaume Ballet 4e2641319b
p2p/discover: fix typo in comments (#21554) 2020-09-11 20:35:38 +02:00
timcooijmans 7b5107b73f
p2p/discover: avoid dropping unverified nodes when table is almost empty (#21396)
This change improves discovery behavior in small networks. Very small
networks would often fail to bootstrap because all member nodes were
dropping table content due to findnode failure. The check is now changed
to avoid dropping nodes on findnode failure when their bucket is almost
empty. It also relaxes the liveness check requirement for FINDNODE/v4
response nodes, returning unverified nodes as results when there aren't
any verified nodes yet.

The "findnode failed" log now reports whether the node was dropped
instead of the number of results. The value of the "results" was
always zero by definition.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-08-24 14:42:39 +02:00
Felix Lange 6ef4495a8f
p2p/discover: require table nodes to have an IP (#21330)
This fixes a corner case in discv5. The issue cannot happen in discv4
because it performs IP checks on all incoming node information.
2020-07-13 22:25:45 +02:00
Felix Lange 723bd8c17f
p2p/discover: move discv4 encoding to new 'v4wire' package (#21147)
This moves all v4 protocol definitions to a new package, p2p/discover/v4wire.
The new package will be used for low-level protocol tests.
2020-06-02 13:20:19 +02:00
Felix Lange 6f54ae24cd
p2p: add 0 port check in dialer (#21008)
* p2p: add low port check in dialer

We already have a check like this for UDP ports, add a similar one in
the dialer. This prevents dials to port zero and it's also an extra
layer of protection against spamming HTTP servers.

* p2p/discover: use errLowPort in v4 code

* p2p: change port check

* p2p: add comment

* p2p/simulations/adapters: ensure assigned port is in all node records
2020-05-11 18:11:17 +03:00
Nishant Das 7a63faf734
p2p/discover: add helper methods to UDPv5 (#20918)
This adds two new methods to UDPv5, AllNodes and LocalNode.

AllNodes returns all the nodes stored in the local table; this is
useful for the purposes of metrics collection and also debugging any
potential issues with other discovery v5 implementations.

LocalNode returns the local node object. The reason for exposing this
is so that users can modify and set/delete new key-value entries in
the local record.
2020-04-16 15:58:37 +02:00
Felix Lange b7394d7942
p2p/discover: add initial discovery v5 implementation (#20750)
This adds an implementation of the current discovery v5 spec.

There is full integration with cmd/devp2p and enode.Iterator in this
version. In theory we could enable the new protocol as a replacement of
discovery v4 at any time. In practice, there will likely be a few more
changes to the spec and implementation before this can happen.
2020-04-08 09:57:23 +02:00