Commit Graph

114 Commits

Author SHA1 Message Date
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
1e2e1b41f8
cmd/devp2p, cmd/wnode, whisper: add missing calls to Timer.Stop (#20843) 2020-04-01 16:12:01 +02:00
Felix Lange
d3c1e654f0
cmd/devp2p: be very correct about route53 change splitting (#20820)
Turns out the way RDATA limits work is documented after all,
I just didn't search right. The trick to make it work is to
count UPSERTs twice.

This also adds an additional check to ensure TTL changes are
applied on existing records.
2020-03-26 23:55:33 +01:00
Felix Lange
87a411b839
cmd/devp2p: lower route53 change limit again (#20819) 2020-03-26 17:39:56 +02:00
Felix Lange
1583e7d274
cmd/devp2p: tweak DNS TTLs (#20801)
* cmd/devp2p: tweak DNS TTLs

* cmd/devp2p: bump treeNodeTTL to four weeks
2020-03-26 13:51:50 +02:00
Felix Lange
976a0f5558
cmd/devp2p: fix Route53 TXT record splitting (#20626)
For longer records and subtree entries, the deployer created two
separate TXT records. This doesn't work as intended because the client
will receive the two records in arbitrary order. The fix is to encode
longer values as "string1""string2" instead of "string1", "string2".
This encoding creates a single record on AWS Route53.
2020-02-05 15:29:59 +01:00
Felix Lange
31baf3a9af log, internal/debug: delete RotatingFileHandler (#20586)
* log: delete RotatingFileHandler

We added this for the dashboard, which is gone now. The
handler never really worked well and had data race and file
handling issues.

* internal/debug: remove unused RotatingFileHandler setup code
2020-01-21 14:57:33 +02:00
Felix Lange
0af96d2556
cmd/devp2p: submit Route53 changes in batches (#20524)
This change works around the 32k RDATA character limit per change
request and fixes several issues in the deployer which prevented it from
working for our production trees.
2020-01-17 11:32:29 +01:00
Felix Lange
f51cf573b5
cmd/devp2p: implement AWS Route53 enrtree deployer (#20446) 2019-12-12 22:25:12 +01:00
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
Péter Szilágyi
8927f7724a
cmd/devp2p, core/forkid: make forkid.Filter API uniform 2019-10-31 10:38:14 +02:00
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
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
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