Commit Graph

636 Commits

Author SHA1 Message Date
Felix Lange
b8040a430e
cmd/utils: use eth DNS tree for snap discovery (#22808)
This removes auto-configuration of the snap.*.ethdisco.net DNS discovery tree.
Since measurements have shown that > 75% of nodes in all.*.ethdisco.net support
snap, we have decided to retire the dedicated index for snap and just use the eth
tree instead.

The dial iterators of eth and snap now use the same DNS tree in the default configuration,
so both iterators should use the same DNS discovery client instance. This ensures that
the record cache and rate limit are shared. Records will not be requested multiple times.

While testing the change, I noticed that duplicate DNS requests do happen even
when the client instance is shared. This is because the two iterators request the tree
root, link tree root, and first levels of the tree in lockstep. To avoid this problem, the
change also adds a singleflight.Group instance in the client. When one iterator
attempts to resolve an entry which is already being resolved, the singleflight object
waits for the existing resolve call to finish and returns the entry to both places.
2021-05-04 11:29:32 +02:00
Péter Szilágyi
ff3535e8e0
p2p/tracker: only reschedule wake if previous didn't run 2021-04-27 21:47:59 +03:00
Martin Holst Swende
45fca44c24
p2p/tracker: properly clean up fulfilled requests 2021-04-27 18:09:34 +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
Péter Szilágyi
1fb9a6dd32
eth/protocols, prp/tracker: add support for req/rep rtt tracking (#22608)
* eth/protocols, prp/tracker: add support for req/rep rtt tracking

* p2p/tracker: sanity cap the number of pending requests

* pap/tracker: linter <3

* p2p/tracker: disable entire tracker if no metrics are enabled
2021-04-22 11:42:46 +03:00
Felföldi Zsolt
2d89fe0883
les: move client pool to les/vflux/server (#22495)
* les: move client pool to les/vflux/server

* les/vflux/server: un-expose NodeBalance, remove unused fn, fix bugs

* tests/fuzzers/vflux: add ClientPool fuzzer

* les/vflux/server: fixed balance tests

* les: rebase fix

* les/vflux/server: fixed more bugs

* les/vflux/server: unexported NodeStateMachine fields and flags

* les/vflux/server: unexport all internal components and functions

* les/vflux/server: fixed priorityPool test

* les/vflux/server: polish balance

* les/vflux/server: fixed mutex locking error

* les/vflux/server: priorityPool bug fixed

* common/prque: make Prque wrap-around priority handling optional

* les/vflux/server: rename funcs, small optimizations

* les/vflux/server: fixed timeUntil

* les/vflux/server: separated balance.posValue and negValue

* les/vflux/server: polish setup

* les/vflux/server: enforce capacity curve monotonicity

* les/vflux/server: simplified requestCapacity

* les/vflux/server: requestCapacity with target range, no iterations in SetCapacity

* les/vflux/server: minor changes

* les/vflux/server: moved default factors to balanceTracker

* les/vflux/server: set inactiveFlag in priorityPool

* les/vflux/server: moved related metrics to vfs package

* les/vflux/client: make priorityPool temp state logic cleaner

* les/vflux/server: changed log.Crit to log.Error

* add vflux fuzzer to oss-fuzz

Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
2021-04-06 20:42:50 +02:00
Péter Szilágyi
6d7ff6acea
eth/protocols, metrics, p2p: add handler performance metrics 2021-03-26 14:00:06 +02:00
Felix Lange
ab8fd4d005
p2p/dnsdisc: rate limit resolving before checking cache (#22566)
This makes the rate limit apply regardless of whether the node is
already cached.
2021-03-24 14:37:20 +02:00
Chen Quan
15e6c27f8b
p2p: fix minor typo and remove fd parameter in checkInboundConn (#22547) 2021-03-24 13:18:29 +01:00
Martin Holst Swende
5bc0343ed3
p2p/dnsdisc: fix flaw in dns size calculation (#22533)
This fixes the calculation of the tree branch factor. With the new
formula, we now creat at most 13 children instead of 30, ensuring
the TXT record size will be below 370 bytes.
2021-03-19 13:20:27 +01:00
Felix Lange
aae7660410
p2p/enr: fix decoding of incomplete lists (#22484)
Given a list of less than two elements DecodeRLP returned rlp.EOL,
leading to issues in outer decoders.
2021-03-11 15:09:25 +01:00
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
Felix Lange
d36276d85e
p2p/dnsdisc: fix hot-spin when all trees are empty (#22313)
In the random sync algorithm used by the DNS node iterator, we first pick a random
tree and then perform one sync action on that tree. This happens in a loop until any
node is found. If no trees contain any nodes, the iterator will enter a hot loop spinning
at 100% CPU.

The fix is complicated. The iterator now checks if a meaningful sync action can
be performed on any tree. If there is nothing to do, it waits for the next root record
recheck time to arrive and then tries again.

Fixes #22306
2021-02-19 09:54:46 +01:00
Martin Holst Swende
6ec1561044
eth: implement eth66 (#22241)
* eth/protocols/eth: split up the eth protocol handlers

* eth/protocols/eth: define eth-66 protocol messages

* eth/protocols/eth: poc implement getblockheaders on eth/66

* eth/protocols/eth: implement remaining eth-66 handlers

* eth/protocols: define handler map for eth 66

* eth/downloader: use protocol constants from eth package

* eth/protocols/eth: add ETH66 capability

* eth/downloader: tests for eth66

* eth/downloader: fix error in tests

* eth/protocols/eth: use eth66 for outgoing requests

* eth/protocols/eth: remove unused error type

* eth/protocols/eth: define protocol length

* eth/protocols/eth: fix pooled tx over eth66

* protocols/eth/handlers: revert behavioural change which caused tests to fail

* eth/downloader: fix failing test

* eth/protocols/eth: add testcases + fix flaw with header requests

* eth/protocols: change comments

* eth/protocols/eth: review fixes + fixed flaw in RequestOneHeader

* eth/protocols: documentation

* eth/protocols/eth: review concerns about types
2021-02-18 18:54:29 +02:00
Martin Holst Swende
7ed860d4f1
eth: don't wait for snap registration if we're not running snap (#22272)
Prevents a situation where we (not running snap) connects with a peer running snap, and get stalled waiting for snap registration to succeed (which will never happen), which cause a waitgroup wait to halt shutdown
2021-02-05 14:15:22 +01:00
Péter Szilágyi
e3430ac7df
eth: check snap satelliteness, delegate drop to eth (#22235)
* eth: check snap satelliteness, delegate drop to eth

* eth: better handle eth/snap satellite relation, merge reg/unreg paths
2021-02-02 10:44:36 +02:00
Felföldi Zsolt
a72fa88a0d
les: switch to new discv5 (#21940)
This PR enables running the new discv5 protocol in both LES client
and server mode. In client mode it mixes discv5 and dnsdisc iterators
(if both are enabled) and filters incoming ENRs for "les" tag and fork ID.
The old p2p/discv5 package and all references to it are removed.

Co-authored-by: Felix Lange <fjl@twurst.com>
2021-01-26 21:41:35 +01:00
Martin Holst Swende
d2779ed7ac
eth, p2p: reserve half peer slots for snap peers during snap sync (#22171)
* eth, p2p: reserve half peer slots for snap peers during snap sync

* eth: less logging

* eth: rework the eth/snap peer reservation logic

* eth: rework the eth/snap peer reservation logic (again)
2021-01-25 20:06:52 +02:00
Guillaume Ballet
c7a6be163f
cmd/utils: don't enumerate USB unless --usb is set (#22130)
USB enumeration still occured. Make sure it will only occur if --usb is set.
This also deprecates the 'NoUSB' config file option in favor of a new option 'USB'.
2021-01-13 11:14:36 +01:00
Felix Lange
817a3fb562
p2p/enode: avoid crashing for invalid IP (#21981)
The database panicked for invalid IPs. This is usually no problem
because all code paths leading to node DB access verify the IP, but it's
dangerous because improper validation can turn this panic into a DoS
vulnerability. The quick fix here is to just turn database accesses
using invalid IP into a noop. This isn't great, but I'm planning to
remove the node DB for discv5 long-term, so it should be fine to have
this quick fix for half a year.

Fixes #21849
2020-12-09 20:21:31 +01:00
Martin Holst Swende
e7db1dbc96
p2p/nodestate: fix deadlock during shutdown of les server (#21927)
This PR fixes a deadlock reported here: #21925

The cause is that many operations may be pending, but if the close happens, only one of them gets awoken and exits, the others remain waiting for a signal that never comes.
2020-11-30 18:58:47 +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
Alex Prut
810f9e057d
all: remove redundant conversions and import names (#21903) 2020-11-25 21:00:23 +01:00
Alex Prut
c92faee66e
all: simplify nested complexity and if blocks ending with a return statement (#21854)
Changes:

    Simplify nested complexity
    If an if blocks ends with a return statement then remove the else nesting.

Most of the changes has also been reported in golint https://goreportcard.com/report/github.com/ethereum/go-ethereum#golint
2020-11-25 09:24:50 +01:00
Martin Holst Swende
3ef52775c4
p2p: avoid spinning loop on out-of-handles (#21878)
* p2p: avoid busy-loop on temporary errors

* p2p: address review concerns
2020-11-20 15:14:25 +01:00
gary rong
c52dfd55fb
p2p/simulations/adapters/exec: fix some issues (#21801)
- Remove the ws:// prefix from the status endpoint since
  the ws:// is already included in the stack.WSEndpoint().
- Don't register the services again in the node start.
  Registration is already done in the initialization stage.
- Expose admin namespace via websocket.
  This namespace is necessary for connecting the peers via websocket.
- Offer logging relevant options for exec adapter.
  It's really painful to mix all log output in the single console. So
  this PR offers two additional options for exec adapter in this case
  testers can config the log output(e.g. file output) and log level
  for each p2p node.
2020-11-10 14:19:44 +01:00
gary rong
b63bffe820
les, p2p/simulations/adapters: fix issues found while simulating les (#21761)
This adds a few tiny fixes for les and the p2p simulation framework:

LES Parts

- Keep the LES-SERVER connection even it's non-synced

  We had this idea to reject the connections in LES protocol if the les-server itself is
  not synced. However, in LES protocol we will also receive the connection from another
  les-server. In this case even the local node is not synced yet, we should keep the tcp
  connection for other protocols(e.g. eth protocol).

- Don't count "invalid message" for non-existing GetBlockHeadersMsg request

  In the eth syncing mechanism (full sync, fast sync, light sync), it will try to fetch
  some non-existent blocks or headers(to ensure we indeed download all the missing chain).
  In this case, it's possible that the les-server will receive the request for
  non-existent headers. So don't count it as the "invalid message" for scheduling
  dropping.

- Copy the announce object in the closure

  Before the les-server pushes the latest headers to all connected clients, it will create
  a closure and queue it in the underlying request scheduler. In some scenarios it's
  problematic. E.g, in private networks, the block can be mined very fast. So before the
  first closure is executed, we may already update the latest_announce object. So actually
  the "announce" object we want to send is replaced.

  The downsize is the client will receive two announces with the same td and then drop the
  server.

P2P Simulation Framework

- Don't double register the protocol services in p2p-simulation "Start".

  The protocols upon the devp2p are registered in the "New node stage". So don't reigster
  them again when starting a node in the p2p simulation framework

- Add one more new config field "ExternalSigner", in order to use clef service in the
  framework.
2020-10-30 18:04:38 +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
Martin Holst Swende
7a5a822905
eth, p2p: use truncated names (#21698)
* peer: return localAddr instead of name to prevent spam

We currently use the name (which can be freely set by the peer) in several log messages.
This enables malicious actors to write spam into your geth log.
This commit returns the localAddr instead of the freely settable name.

* p2p: reduce usage of peer.Name in warn messages

* eth, p2p: use truncated names

* Update peer.go

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
Co-authored-by: Felix Lange <fjl@twurst.com>
2020-10-13 13:28:24 +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
mr_franklin
666092936c
p2p/enode: remove unused code (#21612) 2020-09-28 20:10:11 +02:00
rene
129cf075e9
p2p: move rlpx into separate package (#21464)
This change moves the RLPx protocol implementation into a separate package,
p2p/rlpx. The new package can be used to establish RLPx connections for
protocol testing purposes.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-09-22 10:17:39 +02:00
Felföldi Zsolt
4eb9296910
p2p/nodestate: ensure correct callback order (#21436)
This PR adds an extra guarantee to NodeStateMachine: it ensures that all
immediate effects of a certain change are processed before any subsequent
effects of any of the immediate effects on the same node. In the original
version, if a cascaded change caused a subscription callback to be called
multiple times for the same node then these calls might have happened in a
wrong chronological order.

For example:

- a subscription to flag0 changes flag1 and flag2
- a subscription to flag1 changes flag3
- a subscription to flag1, flag2 and flag3 was called in the following order:

   [flag1] -> [flag1, flag3]
   [] -> [flag1]
   [flag1, flag3] -> [flag1, flag2, flag3]

This happened because the tree of changes was traversed in a "depth-first
order". Now it is traversed in a "breadth-first order"; each node has a
FIFO queue for pending callbacks and each triggered subscription callback
is added to the end of the list. The already existing guarantees are
retained; no SetState or SetField returns until the callback queue of the
node is empty again. Just like before, it is the responsibility of the
state machine design to ensure that infinite state loops are not possible.
Multiple changes affecting the same node can still happen simultaneously;
in this case the changes can be interleaved in the FIFO of the node but the
correct order is still guaranteed.

A new unit test is also added to verify callback order in the above scenario.
2020-09-14 14:01:18 +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
1d25039ff5
p2p/nat: limit UPNP request concurrency (#21390)
This adds a lock around requests because some routers can't handle
concurrent requests. Requests are also rate-limited.
 
The Map function request a new mapping exactly when the map timeout
occurs instead of 5 minutes earlier. This should prevent duplicate mappings.
2020-08-05 09:51:37 +02:00
rene
c0c01612e9
node: refactor package node (#21105)
This PR significantly changes the APIs for instantiating Ethereum nodes in
a Go program. The new APIs are not backwards-compatible, but we feel that
this is made up for by the much simpler way of registering services on
node.Node. You can find more information and rationale in the design
document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775.

There is also a new feature in Node's Go API: it is now possible to
register arbitrary handlers on the user-facing HTTP server. In geth, this
facility is used to enable GraphQL.

There is a single minor change relevant for geth users in this PR: The
GraphQL API is no longer available separately from the JSON-RPC HTTP
server. If you want GraphQL, you need to enable it using the
./geth --http --graphql flag combination.

The --graphql.port and --graphql.addr flags are no longer available.
2020-08-03 19:40:46 +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
libotony
2e08dad9e6
p2p/discv5: unset pingEcho on pong timeout (#21324) 2020-07-13 11:20:47 +02:00
Péter Szilágyi
42ccb2fdbd
p2p: measure packet throughput too, not just bandwidth 2020-06-24 09:36:20 +03:00
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
Martin Michlmayr
4f2784b38f
all: fix typos in comments (#21118) 2020-05-25 10:21:28 +02:00
Felföldi Zsolt
b4a2681120
les, les/lespay: implement new server pool (#20758)
This PR reimplements the light client server pool. It is also a first step
to move certain logic into a new lespay package. This package will contain
the implementation of the lespay token sale functions, the token buying and
selling logic and other components related to peer selection/prioritization
and service quality evaluation. Over the long term this package will be
reusable for incentivizing future protocols.

Since the LES peer logic is now based on enode.Iterator, it can now use
DNS-based fallback discovery to find servers.

This document describes the function of the new components:
https://gist.github.com/zsfelfoldi/3c7ace895234b7b345ab4f71dab102d4
2020-05-22 13:46:34 +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
tgyKomgo
1aa83290f5
p2p/enode: update code comment (#20972)
It is possible to specify enode URLs using domain name since
commit b90cdbaa79, but the code comment still said that only
IP addresses are allowed.

Co-authored-by: admin@komgo.io <KomgoRocks2018!>
2020-04-24 16:50:03 +02:00
ucwong
6c458f32f8
p2p: defer wait group done in protocol start (#20951) 2020-04-21 16:42:18 +02:00
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
Felföldi Zsolt
0851646e48
les, les/lespay/client: add service value statistics and API (#20837)
This PR adds service value measurement statistics to the light client. It
also adds a private API that makes these statistics accessible. A follow-up
PR will add the new server pool which uses these statistics to select
servers with good performance.

This document describes the function of the new components:
https://gist.github.com/zsfelfoldi/3c7ace895234b7b345ab4f71dab102d4

Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
2020-04-09 11:55:32 +02:00
Felix Lange
c8e9a91672
build: upgrade to golangci-lint 1.24.0 (#20901)
* accounts/scwallet: remove unnecessary uses of fmt.Sprintf

* cmd/puppeth: remove unnecessary uses of fmt.Sprintf

* p2p/discv5: remove unnecessary use of fmt.Sprintf

* whisper/mailserver: remove unnecessary uses of fmt.Sprintf

* core: goimports -w tx_pool_test.go

* eth/downloader: goimports -w downloader_test.go

* build: upgrade to golangci-lint 1.24.0
2020-04-08 11:07:29 +03:00
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
ucwong
0c359e4b9a
p2p/discv5, p2p/testing: add missing Timer.Stop calls in tests (#20869) 2020-04-02 16:03:40 +02:00
ucwong
c87cdd3053
p2p/discv5: add missing Timer.Stop calls (#20853) 2020-04-02 10:11:16 +02:00
ucwong
bf35e27ea7
p2p/server: add UDP port mapping goroutine to wait group (#20846) 2020-04-01 18:00:33 +02:00
Felix Lange
1e1b18637e
p2p/discv5: fix test on go 1.14 (#20724) 2020-02-27 14:10:28 +02:00
Boqin Qin
1b9c5b393b
all: fix goroutine leaks in unit tests by adding 1-elem channel buffer (#20666)
This fixes a bunch of cases where a timeout in the test would leak
a goroutine.
2020-02-17 17:33:11 +01:00
Felix Lange
57d4898e29
p2p/dnsdisc: re-check tree root when leaf resolution fails (#20682)
This adds additional logic to re-resolve the root name of a tree when a
couple of leaf requests have failed. We need this change to avoid
getting into a failure state where leaf requests keep failing for half
an hour when the tree has been updated.
2020-02-17 15:23:25 +01:00
Felix Lange
ac72787768
p2p: remove MeteredPeerEvent (#20679)
This event was added for the dashboard, but we don't need it anymore
since the dashboard is gone.
2020-02-17 13:22:14 +02:00
Felix Lange
90caa2cabb
p2p: new dial scheduler (#20592)
* p2p: new dial scheduler

This change replaces the peer-to-peer dial scheduler with a new and
improved implementation. The new code is better than the previous
implementation in two key aspects:

- The time between discovery of a node and dialing that node is
  significantly lower in the new version. The old dialState kept
  a buffer of nodes and launched a task to refill it whenever the buffer
  became empty. This worked well with the discovery interface we used to
  have, but doesn't really work with the new iterator-based discovery
  API.

- Selection of static dial candidates (created by Server.AddPeer or
  through static-nodes.json) performs much better for large amounts of
  static peers. Connections to static nodes are now limited like dynanic
  dials and can no longer overstep MaxPeers or the dial ratio.

* p2p/simulations/adapters: adapt to new NodeDialer interface

* p2p: re-add check for self in checkDial

* p2p: remove peersetCh

* p2p: allow static dials when discovery is disabled

* p2p: add test for dialScheduler.removeStatic

* p2p: remove blank line

* p2p: fix documentation of maxDialPeers

* p2p: change "ok" to "added" in static node log

* p2p: improve dialTask docs

Also increase log level for "Can't resolve node"

* p2p: ensure dial resolver is truly nil without discovery

* p2p: add "looking for peers" log message

* p2p: clean up Server.run comments

* p2p: fix maxDialedConns for maxpeers < dialRatio

Always allocate at least one dial slot unless dialing is disabled using
NoDial or MaxPeers == 0. Most importantly, this fixes MaxPeers == 1 to
dedicate the sole slot to dialing instead of listening.

* p2p: fix RemovePeer to disconnect the peer again

Also make RemovePeer synchronous and add a test.

* p2p: remove "Connection set up" log message

* p2p: clean up connection logging

We previously logged outgoing connection failures up to three times.

- in SetupConn() as "Setting up connection failed addr=..."
- in setupConn() with an error-specific message and "id=... addr=..."
- in dial() as "Dial error task=..."

This commit ensures a single log message is emitted per failure and adds
"id=... addr=... conn=..." everywhere (id= omitted when the ID isn't
known yet).

Also avoid printing a log message when a static dial fails but can't be
resolved because discv4 is disabled. The light client hit this case all
the time, increasing the message count to four lines per failed
connection.

* p2p: document that RemovePeer blocks
2020-02-13 11:10:03 +01:00
Boqin Qin
a9614c3c91
event, p2p/simulations/adapters: fix rare goroutine leaks (#20657)
Co-authored-by: Felix Lange <fjl@twurst.com>
2020-02-12 15:19:47 +01:00
Felix Lange
d5acc5ed9e p2p: ensure Server.loop is ticking even if discovery hangs (#20573)
This is a temporary fix for a problem which started happening when the
dialer was changed to read nodes from an enode.Iterator. Before the
iterator change, discovery queries would always return within a couple
seconds even if there was no Internet access. Since the iterator won't
return unless a node is actually found, discoverTask can take much
longer. This means that the 'emergency connect' logic might not execute
in time, leading to a stuck node.
2020-01-17 12:29:16 +02:00
Felix Lange
fcafa0baa5 p2p: wait for listener goroutines on shutdown (#20569)
* p2p: wait for goroutine exit, fixes #20558

* p2p: wait for all slots on exit

Co-authored-by: Martin Holst Swende <martin@swende.se>
2020-01-16 14:10:15 +02:00
Felix Lange
191364c350 p2p/dnsdisc: add enode.Iterator API (#20437)
* p2p/dnsdisc: add support for enode.Iterator

This changes the dnsdisc.Client API to support the enode.Iterator
interface.

* p2p/dnsdisc: rate-limit DNS requests

* p2p/dnsdisc: preserve linked trees across root updates

This improves the way links are handled when the link root changes.
Previously, sync would simply remove all links from the current tree and
garbage-collect all unreachable trees before syncing the new list of
links.

This behavior isn't great in certain cases: Consider a structure where
trees A, B, and C reference each other and D links to A. If D's link
root changed, the sync code would first remove trees A, B and C, only to
re-sync them later when the link to A was found again.

The fix for this problem is to track the current set of links in each
clientTree and removing old links only AFTER all links are synced.

* p2p/dnsdisc: deflake iterator test

* cmd/devp2p: adapt dnsClient to new p2p/dnsdisc API

* p2p/dnsdisc: tiny comment fix
2019-12-12 11:15:36 +02:00
Marius van der Wijden
c9dce0bfd7 p2p/enode: remove data race in sliceIter (#20421) 2019-12-05 22:16:35 +01:00
Felix Lange
2e98706a99 p2p/discover: slow down lookups on empty table (#20389)
* p2p/discover: slow down lookups on empty table

* p2p/discover: wake from slowdown sleep when table is closed
2019-11-26 12:14:43 +02:00
Felix Lange
fdff182f11 p2p/discv5: add deprecation warning and remove unused code (#20367)
* p2p/discv5: add deprecation warning and remove unused code

* p2p/discv5: remove unused variables
2019-11-22 18:02:13 +02:00
Felix Lange
df206d2513
p2p/simulations: fix staticcheck warnings (#20322) 2019-11-19 17:16:42 +01:00
Felix Lange
9e8cc00b73
p2p: remove unused code (#20325) 2019-11-19 17:16:08 +01:00
Felix Lange
5fefe39ba5 p2p/netutil: fix staticcheck warning (#20315) 2019-11-19 11:17:41 +02:00
Felix Lange
689486449d build: use golangci-lint (#20295)
* build: use golangci-lint

This changes build/ci.go to download and run golangci-lint instead
of gometalinter.

* core/state: fix unnecessary conversion

* p2p/simulations: fix lock copying (found by go vet)

* signer/core: fix unnecessary conversions

* crypto/ecies: remove unused function cmpPublic

* core/rawdb: remove unused function print

* core/state: remove unused function xTestFuzzCutter

* core/vm: disable TestWriteExpectedValues in a different way

* core/forkid: remove unused function checksum

* les: remove unused type proofsData

* cmd/utils: remove unused functions prefixedNames, prefixFor

* crypto/bn256: run goimports

* p2p/nat: fix goimports lint issue

* cmd/clef: avoid using unkeyed struct fields

* les: cancel context in testRequest

* rlp: delete unreachable code

* core: gofmt

* internal/build: simplify DownloadFile for Go 1.11 compatibility

* build: remove go test --short flag

* .travis.yml: disable build cache

* whisper/whisperv6: fix ineffectual assignment in TestWhisperIdentityManagement

* .golangci.yml: enable goconst and ineffassign linters

* build: print message when there are no lint issues

* internal/build: refactor download a bit
2019-11-18 10:49:17 +02:00
Felix Lange
7c4a4eb58a rpc, p2p/simulations: use github.com/gorilla/websocket (#20289)
* rpc: improve codec abstraction

rpc.ServerCodec is an opaque interface. There was only one way to get a
codec using existing APIs: rpc.NewJSONCodec. This change exports
newCodec (as NewFuncCodec) and NewJSONCodec (as NewCodec). It also makes
all codec methods non-public to avoid showing internals in godoc.

While here, remove codec options in tests because they are not
supported anymore.

* p2p/simulations: use github.com/gorilla/websocket

This package was the last remaining user of golang.org/x/net/websocket.
Migrating to the new library wasn't straightforward because it is no
longer possible to treat WebSocket connections as a net.Conn.

* vendor: delete golang.org/x/net/websocket

* rpc: fix godoc comments and run gofmt
2019-11-18 10:40:59 +02:00
Kurkó Mihály
4ea9b62b5c dashboard: send current block to the dashboard client (#19762)
This adds all dashboard changes from the last couple months.
We're about to remove the dashboard, but decided that we should
get all the recent work in first in case anyone wants to pick up this
project later on.

* cmd, dashboard, eth, p2p: send peer info to the dashboard
* dashboard: update npm packages, improve UI, rebase
* dashboard, p2p: remove println, change doc
* cmd, dashboard, eth, p2p: cleanup after review
* dashboard: send current block to the dashboard client
2019-11-13 12:13:13 +01:00
Rick
6f1a600f6c p2p: fix bug in TestPeerDisconnect (#20277) 2019-11-13 12:01:52 +01:00
Felix Lange
adf007dadc
p2p/enode: mock DNS resolver in URL parsing test (#20252) 2019-11-07 16:40:37 +01:00
Felix Lange
2c37142d2f cmd/devp2p, p2p: dial using node iterator, discovery crawler (#20132)
* p2p/enode: add Iterator and associated utilities

* p2p/discover: add RandomNodes iterator

* p2p: dial using iterator

* cmd/devp2p: add discv4 crawler

* cmd/devp2p: WIP nodeset filter

* cmd/devp2p: fixup lesFilter

* core/forkid: add NewStaticFilter

* cmd/devp2p: make -eth-network filter actually work

* cmd/devp2p: improve crawl timestamp handling

* cmd/devp2p: fix typo

* p2p/enode: fix comment typos

* p2p/discover: fix comment typos

* p2p/discover: rename lookup.next to 'advance'

* p2p: lower discovery mixer timeout

* p2p/enode: implement dynamic FairMix timeouts

* cmd/devp2p: add ropsten support in -eth-network filter

* cmd/devp2p: tweak crawler log message
2019-10-29 17:08:57 +02:00
Ross
d5b79e752e p2p/simulations: add node properties support and utility functions (#20060) 2019-10-17 10:07:09 +02:00
Felix Lange
7300365956 p2p/dnsdisc: update to latest EIP-1459 spec (#20168)
This updates the DNS TXT record format to the latest
changes in ethereum/EIPs#2313.
2019-10-16 14:35:24 +03:00
Péter Szilágyi
a2a60869c8
p2p: measure subprotocol bandwidth usage 2019-09-27 18:00:25 +03:00
Felix Lange
0568e81701
p2p/dnsdisc: add implementation of EIP-1459 (#20094)
This adds an implementation of node discovery via DNS TXT records to the
go-ethereum library. The implementation doesn't match EIP-1459 exactly,
the main difference being that this implementation uses separate merkle
trees for tree links and ENRs. The EIP will be updated to match p2p/dnsdisc.

To maintain DNS trees, cmd/devp2p provides a frontend for the p2p/dnsdisc
library. The new 'dns' subcommands can be used to create, sign and deploy DNS
discovery trees.
2019-09-25 11:38:13 +02:00
Felix Lange
39b0b1a1a6
all: make unit tests work with Go 1.13 (#20053)
Most of these changes are related to the Go 1.13 changes to test binary
flag handling. 

* cmd/geth: make attach tests more reliable

This makes the test wait for the endpoint to come up by polling
it instead of waiting for two seconds.

* tests: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.

* crypto/ecies: remove useless -dump flag in tests

* p2p/simulations: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.

* build: remove workaround for ./... vendor matching

This workaround was necessary for Go 1.8. The Go 1.9 release changed
the expansion rules to exclude vendored packages.

* Makefile: use relative path for GOBIN

This makes the "Run ./build/bin/..." line look nicer.

* les: fix test binary flags for Go 1.13

Calling flag.Parse during package initialization is prohibited
as of Go 1.13 and causes test failures. Call it in TestMain instead.
2019-09-11 14:41:22 +02:00
Péter Szilágyi
72d5a27a39
core, metrics, p2p: switch some invalid counters to gauges 2019-09-10 14:39:07 +03:00
Felix Lange
54b271a86d
crypto: add SignatureLength constant and use it everywhere (#19996)
Original change by @jpeletier
2019-08-22 15:14:06 +02:00
alexwang
b90cdbaa79 p2p/enode: allow DNS names in enode URLs (#18524) 2019-08-22 14:23:40 +02:00
Felix Lange
26f538b0e5
p2p/enode, p2p/discv5: fix URL parsing test for go 1.12.8 (#19963) 2019-08-15 10:36:36 +02:00
Christian Muehlhaeuser
a32a2b933a cmd, contracts, eth, p2p, signer, whisper: fixed ineffectual assignments (#19869)
Fixed assigning values to variables we don't end up using.
2019-07-22 13:34:41 +03:00
Péter Szilágyi
1a83114c74
all: update author list and licenses 2019-07-22 12:17:27 +03:00
Christian Muehlhaeuser
5183483c53 core/state, p2p/discover, trie, whisper: avoid unnecessary conversions (#19870)
No need to convert these types.
2019-07-22 10:30:09 +03:00
Kurkó Mihály
a1f8549262 p2p: add ENR to PeerInfo (#19816) 2019-07-19 11:25:43 +02:00
大彬
4ac04ae0fe all: replace fmt.Print* calls with t.Log* in tests (#19670) 2019-07-17 13:20:24 +02:00
Felix Lange
fa538ee7ed p2p/discover: improve randomness of ReadRandomNodes (#19799)
Make it select from all live nodes instead of selecting the heads of
random buckets.
2019-07-08 18:58:03 +03:00
Péter Szilágyi
983f92368b
core/forkid: implement the forkid EIP, announce via ENR (#19738)
* eth: chain config (genesis + fork) ENR entry

* core/forkid, eth: protocol independent fork ID, update to CRC32 spec

* core/forkid, eth: make forkid a struct, next uint64, enr struct, RLP

* core/forkid: change forkhash rlp encoding from int to [4]byte

* eth: fixup eth entry a bit and update it every block

* eth: fix lint

* eth: fix crash in ethclient tests
2019-07-08 18:53:47 +03:00
Felix Lange
cc0f0e27a6 p2p: remove "cap" enr entry (#19800)
This entry was an experiment, but we're moving on to the
entry-per-protocol instead.
2019-07-08 18:41:41 +03:00
Martin Holst Swende
7fd82a0e3e p2p: add address info to peer event reporting (#19716) 2019-07-05 20:27:13 +02:00
gary rong
f7cdea2bdc all: on-chain oracle checkpoint syncing (#19543)
* all: implement simple checkpoint syncing

cmd, les, node: remove callback mechanism

cmd, node: remove callback definition

les: simplify the registrar

les: expose checkpoint rpc services in the light client

les, light: don't store untrusted receipt

cmd, contracts, les: discard stale checkpoint

cmd, contracts/registrar: loose restriction of registeration

cmd, contracts: add replay-protection

all: off-chain multi-signature contract

params: deploy checkpoint contract for rinkeby

cmd/registrar: add raw signing mode for registrar

cmd/registrar, contracts/registrar, les: fixed messages

* cmd/registrar, contracts/registrar: fix lints

* accounts/abi/bind, les: address comments

* cmd, contracts, les, light, params: minor checkpoint sync cleanups

* cmd, eth, les, light: move checkpoint config to config file

* cmd, eth, les, params: address comments

* eth, les, params: address comments

* cmd: polish up the checkpoint admin CLI

* cmd, contracts, params: deploy new version contract

* cmd/checkpoint-admin: add another flag for clef mode signing

* cmd, contracts, les: rename and regen checkpoint oracle with abigen
2019-06-28 10:34:02 +03:00
lash
cdadf57bf9 p2p/simulations: Enable access to MsgEvents with execadapter (#19749) 2019-06-21 13:45:32 +02:00
Felix Lange
f213ceb83f p2p: add more info to peer addition and removal logs (#19712) 2019-06-13 11:51:11 +02:00
Felix Lange
c420dcb39c
p2p: enforce connection retry limit on server side (#19684)
The dialer limits itself to one attempt every 30s. Apply the same limit
in Server and reject peers which try to connect too eagerly. The check
against the limit happens right after accepting the connection.

Further changes in this commit ensure we pass the Server logger
down to Peer instances, discovery and dialState. Unit test logging now
works in all Server tests.
2019-06-11 12:45:33 +02:00
Péter Szilágyi
b02958b9c5
core, ethdb, metrics, p2p: expose various counter metrics for grafana 2019-06-11 09:49:13 +03:00
Felix Lange
e83c3ccc47
p2p/enode: improve IPv6 support, add ENR text representation (#19663)
* p2p/enr: add entries for for IPv4/IPv6 separation

This adds entry types for "ip6", "udp6", "tcp6" keys. The IP type stays
around because removing it would break a lot of code and force everyone
to care about the distinction.

* p2p/enode: track IPv4 and IPv6 address separately

LocalNode predicts the local node's UDP endpoint and updates the record.
This change makes it predict IPv4 and IPv6 endpoints separately since
they can now be in the record at the same time.

* p2p/enode: implement base64 text format
* all: switch to enode.Parse(...)

This allows passing base64-encoded node records to all the places that
previously accepted enode:// URLs. The URL format is still supported.

* cmd/bootnode, p2p: log node URL instead of ENR

...and return the base64 record in NodeInfo.
2019-06-07 15:31:00 +02:00
Felix Lange
896322bf88
cmd/devp2p: add devp2p debug tool (#19657)
* p2p/discover: export Ping and RequestENR

These two are useful for checking the status of a node.

* cmd/devp2p: add devp2p debug tool

This is a new tool for debugging p2p issues. It supports a few
basic tasks for now, but many more things can and will be added
in the near future.

   devp2p enrdump            -- prints ENRs readably
   devp2p discv4 ping        -- checks if a node is up
   devp2p discv4 requestenr  -- gets a node's record
   devp2p discv4 resolve     -- finds a node through the DHT
2019-06-07 15:29:16 +02:00
Rafael Matias
42b81f94ad swarm: code cleanup, move to ethersphere/swarm (#19661) 2019-06-04 16:35:36 +03:00
Martin Holst Swende
fec3b56f7f accounts, p2p, rpc: make CGO_ENABLED=0 build again (#19593)
* p2p: remove direct import of cgo-library

* accounts, rpc: more nocgo alternatives

* rpc: move unix path constant into separate file

* accounts/scwallet: address review concerns, remove copy-pasta
2019-05-26 01:07:10 +03:00
Felix Lange
b548b5aeb0
p2p/discover: fix crash in Resolve (#19579) 2019-05-15 11:11:17 -04:00
Felix Lange
350a87dd3c
p2p/discover: add support for EIP-868 (v4 ENR extension) (#19540)
This change implements EIP-868. The UDPv4 transport announces support
for the extension in ping/pong and handles enrRequest messages.

There are two uses of the extension: If a remote node announces support
for EIP-868 in their pong, node revalidation pulls the node's record.
The Resolve method requests the record unconditionally.
2019-05-15 06:47:45 +02:00
Péter Szilágyi
a0b81097ad
Merge pull request #19562 from holiman/fix_tabcrash
p2p/discover: fix nil-dereference due to race
2019-05-13 13:31:45 +03:00
Martin Holst Swende
95263914fc
p2p/discover: fix a race where table loop would self-lookup before returning from constructor 2019-05-13 11:30:31 +02:00
Anton Evangelatov
3e9ba57669 swarm/storage: improve instrumentation
swarm/storage/localstore: fix broken metric (#1373)

p2p/protocols: count different messages (#1374)

cmd/swarm: disable snapshot create test due to constant flakes (#1376)

swarm/network: remove redundant goroutine (#1377)
2019-05-10 12:27:04 +02:00
Elad
a1cd7e6e92 p2p/protocols, swarm/network: fix resource leak with p2p teardown 2019-05-10 12:26:37 +02:00
Anton Evangelatov
993b145f25 swarm/storage/localstore: fix export db.Put signature
cmd/swarm/swarm-smoke: improve smoke tests (#1337)

swarm/network: remove dead code (#1339)

swarm/network: remove FetchStore and SyncChunkStore in favor of NetStore (#1342)
2019-05-10 12:26:30 +02:00
Felix Lange
dba1750eda p2p/discover: split out discv4 code
This change restructures the internals of p2p/discover to make room for
the discv5 code which will soon be added to this package.

- packet type names now have a "V4" suffix.
- ListenUDP returns *UDPv4 instead of *Table. This technically breaks
  the API but the only caller in go-ethereum is package p2p, which uses
  a compatible interface and doesn't need changes.
- The internal transport interface is changed to make Table reusable for v5.
- The 'lookup' code moves from table to transport. This required
  updating the lookup unit test to use udpTest instead of a custom transport.
2019-04-30 13:13:22 +02:00
Janoš Guljaš
3873a7314d swarm/network: fix data races in TestInitialPeersMsg test (#19490)
* swarm/network: fix data races in TestInitialPeersMsg test

* swarm/network: add Kademlia.Saturation method with lock

* swarm/network: add Hive.Peer method to safely retrieve a bzz peer

* swarm/network: remove duplicate comment

* p2p/testing: prevent goroutine leak in ProtocolTester

* swarm/network: fix data race in newBzzBaseTesterWithAddrs

* swarm/network: fix goroutone leaks in testInitialPeersMsg

* swarm/network: raise number of peer check attempts in testInitialPeersMsg

* swarm/network: use Hive.Peer in Hive.PeerInfo function

* swarm/network: reduce the scope of mutex lock in newBzzBaseTesterWithAddrs

* swarm/storage: disable TestCleanIndex with race detector
2019-04-25 21:33:18 +02:00
Guillaume Ballet
29bba5d0b2 p2p: fix typo in dialstate comment (#19476) 2019-04-18 10:02:11 +03:00
ANOTHEL
3fa76298e4 p2p: remove useless parameter (#19433) 2019-04-10 11:49:02 +03:00
Felix Lange
ed97517ff4 p2p/discover: bump failure counter only if no nodes were provided (#19362)
This resolves a minor issue where neighbors responses containing less
than 16 nodes would bump the failure counter, removing the node. One
situation where this can happen is a private deployment where the total
number of extant nodes is less than 16.

Issue found by @jsying.
2019-04-08 14:35:11 +03:00
lash
2f5b6cb442 swarm/network: Use different privatekey for bzz overlay in sim (#19313)
* cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter

* cmd/p2p/swarm: Remove comments + config.Enode nomarshal

* p2p/simulations: Remove superfluous error check

* p2p/simulation: Move init enode comment

* swarm, p2p/simulations, cmd/swarm: Use nodekey in binary record sign

* swarm/network, swarm/pss: Dervice bzzkey

* swarm/pss: Remove unused function

* swarm/network: Store swarm private key in simulation bucket

* swarm/pss: Shorten TextProxNetwork shortrunning test timeout

* swarm/pss: Increase prox test timeout

* swarm/pss: Increase timeout slightly on shortrunning proxtest

* swarm/network: Simplify bucket instantiation in servicectx func

* p2p/simulations: Tcpport -> udpport

* swarm/network, swarm/pss: Simplify + correct lock in servicefunc sim

* swarm/network: Cleanup after rebase on extract swarm enode new

* p2p/simulations, swarm/network: Make exec disc test pass

* swarm/network: Prune ye olde comment

* swarm/pss: Correct revised bzzkey method call

* swarm/network: Clarify comment about privatekey generation data

* swarm/pss: Fix syntax errors after rebase

* swarm/network: Rename misleadingly named method

(amend commit to trigger ci - attempt 5)
2019-03-22 21:37:25 +01:00
lash
09924cbcaa cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter (#19309)
* cmd/swarm, p2p, swarm: Enable ENR in binary/execadapter

* cmd/p2p/swarm: Remove comments + config.Enode nomarshal

* p2p/simulations: Remove superfluous error check

* p2p/simulation: Move init enode comment

* swarm/api: Check error in config test

* swarm, p2p/simulations, cmd/swarm: Use nodekey in binary record sign

* cmd/swarm: Make nodekey available for swarm api config
2019-03-22 05:55:47 +01:00
lash
4b4f03ca37 swarm, p2p: Prerequities for ENR replacing handshake (#19275)
* swarm/api, swarm/network, p2p/simulations: Prerequisites for handshake remove

* swarm, p2p: Add full sim node configs for protocoltester

* swarm/network: Make stream package pass tests

* swarm/network: Extract peer and addr types out of protocol file

* p2p, swarm: Make p2p/protocols tests pass + rename types.go

* swarm/network: Deactivate ExecAdapter test until binary ENR prep

* swarm/api: Remove comments

* swarm/network: Uncomment bootnode record load
2019-03-15 11:27:17 +01:00
Kurkó Mihály
1a29bf0ee2 dashboard, p2p, vendor: visualize peers (#19247)
* dashboard, p2p: visualize peers

* dashboard: change scale to green to red
2019-03-13 14:53:52 +02:00
Ferenc Szabo
f82185a4a1 p2p/protocols: fix data race in TestProtocolHook (#19242)
dummyHook's fields were concurrently written by nodes and read by
the test. The simplest solution is to protect all fields with a mutex.

Enable: TestMultiplePeersDropSelf, TestMultiplePeersDropOther as they
seemingly accidentally stayed disabled during a refactor/rewrite
since 1836366ac1.

resolves ethersphere/go-ethereum#1286
2019-03-08 17:30:16 +01:00
holisticode
f2d6310354 p2p/protocols: fix race condition in TestAccountingSimulation (#19228)
p2p/protocols: Fix race condition in TestAccountingSimulation
2019-03-07 08:13:11 +01:00
holisticode
81ed700157 Enable longrunning tests to run (#19208)
* p2p/simulations: increased snapshot load timeout for debugging

* swarm/network/stream: less nodes for snapshot longrunning tests

* swarm/network: fixed longrunning tests

* swarm/network/stream: store kademlia in bucket

* swarm/network/stream: disabled healthy check in delivery tests

* swarm/network/stream: longer SyncUpdateDelay for longrunning tests

* swarm/network/stream: more debug output

* swarm/network/stream: reduced longrunning snapshot tests to 64 nodes

* swarm/network/stream: don't WaitTillHealthy in SyncerSimulation

* swarm/network/stream: cleanup for PR
2019-03-05 12:54:46 +01:00
Péter Szilágyi
dac7cbcf21
p2p/enode: use localItemKey for local sequence number (#19131)
* p2p/discover: remove unused function

* p2p/enode: use localItemKey for local sequence number

I added localItemKey for this purpose in #18963, but then
forgot to actually use it. This changes the database layout
yet again and requires bumping the version number.
2019-02-28 13:14:45 +02:00
Felföldi Zsolt
c2003ed63b les, les/flowcontrol: improved request serving and flow control (#18230)
This change

- implements concurrent LES request serving even for a single peer.
- replaces the request cost estimation method with a cost table based on
  benchmarks which gives much more consistent results. Until now the
  allowed number of light peers was just a guess which probably contributed
  a lot to the fluctuating quality of available service. Everything related
  to request cost is implemented in a single object, the 'cost tracker'. It
  uses a fixed cost table with a global 'correction factor'. Benchmark code
  is included and can be run at any time to adapt costs to low-level
  implementation changes.
- reimplements flowcontrol.ClientManager in a cleaner and more efficient
  way, with added capabilities: There is now control over bandwidth, which
  allows using the flow control parameters for client prioritization.
  Target utilization over 100 percent is now supported to model concurrent
  request processing. Total serving bandwidth is reduced during block
  processing to prevent database contention.
- implements an RPC API for the LES servers allowing server operators to
  assign priority bandwidth to certain clients and change prioritized
  status even while the client is connected. The new API is meant for
  cases where server operators charge for LES using an off-protocol mechanism.
- adds a unit test for the new client manager.
- adds an end-to-end test using the network simulator that tests bandwidth
  control functions through the new API.
2019-02-26 12:32:48 +01:00
Matthew Halpern
d3ccedc767 p2p/simulations: enforce camel case variable names (#19053) 2019-02-19 19:50:59 +02:00
Felix Lange
57f959af41 p2p/enode: use localItemKey for local sequence number
I added localItemKey for this purpose in #18963, but then
forgot to actually use it. This changes the database layout
yet again and requires bumping the version number.
2019-02-19 13:29:41 +01:00
Felix Lange
cf147c71d5 p2p/discover: remove unused function 2019-02-19 13:29:19 +01:00
Matthew Halpern
f1537b774c p2p/discover: make maximum packet size a constant (#19061) 2019-02-19 12:27:29 +01:00
Ferenc Szabo
50b872bf05 p2p, swarm: fix node up races by granular locking (#18976)
* swarm/network: DRY out repeated giga comment

I not necessarily agree with the way we wait for event propagation.
But I truly disagree with having duplicated giga comments.

* p2p/simulations: encapsulate Node.Up field so we avoid data races

The Node.Up field was accessed concurrently without "proper" locking.
There was a lock on Network and that was used sometimes to access
the  field. Other times the locking was missed and we had
a data race.

For example: https://github.com/ethereum/go-ethereum/pull/18464
The case above was solved, but there were still intermittent/hard to
reproduce races. So let's solve the issue permanently.

resolves: ethersphere/go-ethereum#1146

* p2p/simulations: fix unmarshal of simulations.Node

Making Node.Up field private in 13292ee897e345045fbfab3bda23a77589a271c1
broke TestHTTPNetwork and TestHTTPSnapshot. Because the default
UnmarshalJSON does not handle unexported fields.

Important: The fix is partial and not proper to my taste. But I cut
scope as I think the fix may require a change to the current
serialization format. New ticket:
https://github.com/ethersphere/go-ethereum/issues/1177

* p2p/simulations: Add a sanity test case for Node.Config UnmarshalJSON

* p2p/simulations: revert back to defer Unlock() pattern for Network

It's a good patten to call `defer Unlock()` right after `Lock()` so
(new) error cases won't miss to unlock. Let's get back to that pattern.

The patten was abandoned in 85a79b3ad3,
while fixing a data race. That data race does not exist anymore,
since the Node.Up field got hidden behind its own lock.

* p2p/simulations: consistent naming for test providers Node.UnmarshalJSON

* p2p/simulations: remove JSON annotation from private fields of Node

As unexported fields are not serialized.

* p2p/simulations: fix deadlock in Network.GetRandomDownNode()

Problem: GetRandomDownNode() locks -> getDownNodeIDs() ->
GetNodes() tries to lock -> deadlock

On Network type, unexported functions must assume that `net.lock`
is already acquired and should not call exported functions which
might try to lock again.

* p2p/simulations: ensure method conformity for Network

Connect* methods were moved to p2p/simulations.Network from
swarm/network/simulation. However these new methods did not follow
the pattern of Network methods, i.e., all exported method locks
the whole Network either for read or write.

* p2p/simulations: fix deadlock during network shutdown

`TestDiscoveryPersistenceSimulationSimAdapter` often got into deadlock.
The execution was stuck on two locks, i.e, `Kademlia.lock` and
`p2p/simulations.Network.lock`. Usually the test got stuck once in each
20 executions with high confidence.

`Kademlia` was stuck in `Kademlia.EachAddr()` and `Network` in
`Network.Stop()`.

Solution: in `Network.Stop()` `net.lock` must be released before
calling `node.Stop()` as stopping a node (somehow - I did not find
the exact code path) causes `Network.InitConn()` to be called from
`Kademlia.SuggestPeer()` and that blocks on `net.lock`.

Related ticket: https://github.com/ethersphere/go-ethereum/issues/1223

* swarm/state: simplify if statement in DBStore.Put()

* p2p/simulations: remove faulty godoc from private function

The comment started with the wrong method name.

The method is simple and self explanatory. Also, it's private.
=> Let's just remove the comment.
2019-02-18 07:38:14 +01:00
Janoš Guljaš
3fd6db2bf6 swarm: fix network/stream data races (#19051)
* swarm/network/stream: newStreamerTester cleanup only if err is nil

* swarm/network/stream: raise newStreamerTester waitForPeers timeout

* swarm/network/stream: fix data races in GetPeerSubscriptions

* swarm/storage: prevent data race on LDBStore.batchesC

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461775049

* swarm/network/stream: fix TestGetSubscriptionsRPC data race

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461768477

* swarm/network/stream: correctly use Simulation.Run callback

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-461783804

* swarm/network: protect addrCountC in Kademlia.AddrCountC function

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-462273444

* p2p/simulations: fix a deadlock calling getRandomNode with lock

https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-462317407

* swarm/network/stream: terminate disconnect goruotines in tests

* swarm/network/stream: reduce memory consumption when testing data races

* swarm/network/stream: add watchDisconnections helper function

* swarm/network/stream: add concurrent counter for tests

* swarm/network/stream: rename race/norace test files and use const

* swarm/network/stream: remove watchSim and its panic

* swarm/network/stream: pass context in watchDisconnections

* swarm/network/stream: add concurrent safe bool for watchDisconnections

* swarm/storage: fix LDBStore.batchesC data race by not closing it
2019-02-13 13:03:23 +01:00
Janoš Guljaš
26aea73673 cmd, node, p2p/simulations: fix node account manager leak (#19004)
* node: close AccountsManager in new Close method

* p2p/simulations, p2p/simulations/adapters: handle node close on shutdown

* node: move node ephemeralKeystore cleanup to stop method

* node: call Stop in Node.Close method

* cmd/geth: close node.Node created with makeFullNode in cli commands

* node: close Node instances in tests

* cmd/geth, node: minor code style fixes

* cmd, console, miner, mobile: proper node Close() termination
2019-02-07 12:40:36 +02:00
Felix Lange
a89170cfb2
p2p/discover: improve table addition code (#18974)
This change clears up confusion around the two ways in which nodes
can be added to the table.

When a neighbors packet is received as a reply to findnode, the nodes
contained in the reply are added as 'seen' entries if sufficient space
is available.

When a ping is received and the endpoint verification has taken place,
the remote node is added as a 'verified' entry or moved to the front of
the bucket if present. This also updates the node's IP address and port
if they have changed.
2019-01-31 11:48:54 +01:00
Felix Lange
f0c6f92140
p2p/discover, p2p/enode: rework endpoint proof handling, packet logging (#18963)
This change resolves multiple issues around handling of endpoint proofs.
The proof is now done separately for each IP and completing the proof
requires a matching ping hash.

Also remove waitping because it's equivalent to sleep. waitping was
slightly more efficient, but that may cause issues with findnode if
packets are reordered and the remote end sees findnode before pong.

Logging of received packets was hitherto done after handling the packet,
which meant that sent replies were logged before the packet that
generated them. This change splits up packet handling into 'preverify'
and 'handle'. The error from 'preverify' is logged, but 'handle' happens
after the message is logged. This fixes the order. Packet logs now
contain the node ID.
2019-01-29 17:39:20 +01:00
Janoš Guljaš
74c38902ec p2p/protocols: fix possible metrics loss in AccountingMetrics (#18956) 2019-01-29 15:19:54 +01:00
Ferenc Szabo
a0ac3b6a1a p2p/protocols: fix rare data race in Peer.Handshake() (#18951) 2019-01-29 14:51:13 +01:00
Jerzy Lasyk
f28da4f602 swarm/metrics: Send the accounting registry to InfluxDB (#18470) 2019-01-24 18:57:20 +01:00
Elad
2abeb35d54 p2p/testing, swarm: remove unused testing.T in protocol tester (#18500) 2019-01-24 17:23:34 +01:00
Anton Evangelatov
bbd120354a
swarm: bootnode-mode, new bootnodes and no p2p package discovery (#18498) 2019-01-24 12:02:18 +01:00
Martin Holst Swende
dc43ea8d03
tests: tune flaky tests that error in travis occasionally (#18508)
* tests: tune flaky tests that error in travis occasionally

* tests: formatting
2019-01-23 16:09:29 +01:00
Elad
85a79b3ad3 p2p/simulations: fix data race on swarm/network/simulations (#18464) 2019-01-22 20:11:43 +01:00
Ferenc Szabo
2eb838ed97 p2p/simulations: eliminate concept of pivot (#18426) 2019-01-11 10:23:45 +01:00
holisticode
ae857e74bf swarm, p2p/protocols: Stream accounting (#18337)
* swarm: completed 1st phase of swap accounting

* swarm, p2p/protocols: added stream pricing

* swarm/network/stream: gofmt simplify stream.go

* swarm: fixed review comments

* swarm: used snapshots for swap tests

* swarm: custom retrieve for swap (less cascaded requests at any one time)

* swarm: addressed PR comments

* swarm: log output formatting

* swarm: removed parallelism in swap tests

* swarm: swap tests simplification

* swarm: removed swap_test.go

* swarm/network/stream: added prefix space for comments

* swarm/network/stream: unit test for prices

* swarm/network/stream: don't hardcode price

* swarm/network/stream: fixed invalid price check
2019-01-08 00:59:00 +01:00
Ferenc Szabo
fe03b76ffe A few minor code inspection fixes (#18393)
* swarm/network: fix code inspection problems

- typos
- redundant import alias

* p2p/simulations: fix code inspection problems

- typos
- unused function parameters
- redundant import alias
- code style issue: snake case

* swarm/network: fix unused method parameters inspections
2019-01-06 11:58:57 +01:00
Dave McGregor
33d233d3e1
vendor, crypto, swarm: switch over to upstream sha3 package 2019-01-04 09:26:07 +02:00
Jerzy Lasyk
880de230b4 p2p/protocols: accounting metrics rpc (#18336)
* p2p/protocols: accounting metrics rpc added (#847)

* p2p/protocols: accounting api documentation added (#847)

* p2p/protocols: accounting api doc updated (#847)

* p2p/protocols: accounting api doc update (#847)

* p2p/protocols: accounting api doc update (#847)

* p2p/protocols: fix file is not gofmted

* fix lint error

* updated comments after review

* add account balance to rpc

* naming changed after review
2018-12-22 06:04:03 +01:00
lash
e1edfe0689 p2p/simulation: Test snapshot correctness and minimal benchmark (#18287)
* p2p/simulation: WIP minimal snapshot test

* p2p/simulation: Add snapshot create, load and verify to snapshot test

* build: add test tag for tests

* p2p/simulations, build: Revert travis change, build test sym always

* p2p/simulations: Add comments, timeout check on additional events

* p2p/simulation: Add benchmark template for minimal peer protocol init

* p2p/simulations: Remove unused code

* p2p/simulation: Correct timer reset

* p2p/simulations: Put snapshot check events in buffer and call blocking

* p2p/simulations: TestSnapshot fail if Load function returns early

* p2p/simulations: TestSnapshot wait for all connections before returning

* p2p/simulation: Revert to before wait for snap load (5e75594)

* p2p/simulations: add "conns after load" subtest to TestSnapshot

and nudge
2018-12-21 06:22:11 +01:00
Elad
472c23a801 p2p/simulation: move connection methods from swarm/network/simulation (#18323) 2018-12-17 12:19:01 +01:00
yahtoo
aad3c67a92 p2p/discv5: don't hash findnode target in lookup against table (#18309) 2018-12-14 14:55:51 +01:00
Janoš Guljaš
661809714e swarm: snapshot load improvement (#18220)
* swarm/network: Hive - do not notify peer if discovery is disabled

* p2p/simulations: validate all connections on loading a snapshot

* p2p/simulations: track all connections in on snapshot loading

* p2p/simulations: add snapshotLoadTimeout variable

* p2p/simulations: ignore control events in snapshot load

* p2p/simulations: simplify event loop synchronization

* p2p/simulations: return already connected error from Load function

* p2p/simulations: log warning on snapshot loading disconnection
2018-12-07 06:51:40 +01:00
needkane
54abb97e3b p2p: use errors.New instead of fmt.Errorf (#18193) 2018-11-30 22:38:37 +01:00
Péter Szilágyi
edc39aaedf
p2p/discv5: gofmt 2018-11-27 14:50:47 +02:00
ANOTHEL
89fe24bbcc p2p/discv5: minor code simplification (#18188)
* Update net.go

more simple

* Update net.go
2018-11-27 14:00:57 +02:00