The MTU (Maximum Transmission Unit) for Ethernet is 1500 bytes.
The IP header and the TCP header take up 20 bytes each at least (unless
optional header fields are used) and thus the max for (non-Jumbo frame)
Ethernet is 1500 - 20 -20 = 1460
Source: https://stackoverflow.com/a/3074427/820520
While debugging the mempool issue (#5796), I've noticed we're spending
quite a bit of time encoding blobs of data, which never get printed! The
reason is filtering occurs on the level below, so Go runtime rightfully
evaluates function arguments.
I think it's okay to not format raw bytes.
This implements a new `Transport` interface and related types for the P2P refactor in #5670. Previously, `conn.MConnection` was very tightly coupled to the `Peer` implementation -- in order to allow alternative non-multiplexed transports (e.g. QUIC), MConnection has now been moved below the `Transport` interface, as `MConnTransport`, and decoupled from the peer. Since the `p2p` package is not covered by our Go API stability, this is not considered a breaking change, and not listed in the changelog.
The initial approach was to implement the new interface in its final form (which also involved possible protocol changes, see https://github.com/tendermint/spec/pull/227). However, it turned out that this would require a large amount of changes to existing P2P code because of the previous tight coupling between `Peer` and `MConnection` and the reliance on subtleties in the MConnection behavior. Instead, I have broadened the `Transport` interface to expose much of the existing MConnection interface, preserved much of the existing MConnection logic and behavior in the transport implementation, and tried to make as few changes to the rest of the P2P stack as possible. We will instead reduce this interface gradually as we refactor other parts of the P2P stack.
The low-level transport code and protocol (e.g. MConnection, SecretConnection and so on) has not been significantly changed, and refactoring this is not a priority until we come up with a plan for QUIC adoption, as we may end up discarding the MConnection code entirely.
There are no tests of the new `MConnTransport`, as this code is likely to evolve as we proceed with the P2P refactor, but tests should be added before a final release. The E2E tests are sufficient for basic validation in the meanwhile.
Replace defer with t.Cleanup().
Replace the combination of ioutil.TempDir, error checking
and defer os.RemoveAll() with Go testing.T's new TempDir()
helper.
Mark auxiliary functions as test helpers.
## Description
Remove secp256k1 as discussed in the tendermint dev call. The implementation has been moved to the [Cosmos-SDK](443e0c1f89/crypto/keys/secp256k1)
Closes: #XXX
## Description
This PR aims to make the crypto.PubKey interface more intuitive.
Changes:
- `VerfiyBytes` -> `VerifySignature`
Before `Bytes()` was amino encoded, now since it is the byte representation should we get rid of it entirely?
EDIT: decided to keep `Bytes()` as it is useful if you are using the interface instead of the concrete key
Closes: #XXX
## Description
Add test vectors for all reactors
- [x] state-sync
- [x] privval
- [x] mempool
- [x] p2p
- [x] evidence
- [ ] light?
this PR is primarily oriented at testvectors for things going over the wire. should we expand the testvectors into types as well?
Closes: #XXX
While working on tendermint my colleague @jinmannwong fixed a few of the unit tests that we found to be flaky in our CI. We thought that you might find this useful, see below for comments.
## Description
This PR wraps the stdlib sync.(RW)Mutex & godeadlock.(RW)Mutex. This enables using go-deadlock via a build flag instead of using sed to replace sync with godeadlock in all files
Closes: #3242
- drop Height & Base from StatusRequest
It does not make sense nor it's used anywhere currently. Also, there
seem to be no trace of these fields in the ADR-40 (blockchain reactor
v2).
- change PacketMsg#EOF type from int32 to bool
## Description
partially cleanup in preparation for errcheck
i ignored a bunch of defer errors in tests but with the update to go 1.14 we can use `t.Cleanup(func() { if err := <>; err != nil {..}}` to cover those errors, I will do this in pr number two of enabling errcheck.
ref #5059
Migrates the p2p connections to Protobuf. Supersedes #4800.
gogoproto's `NewDelimitedReader()` uses an internal buffer, which makes it unsuitable for reading individual messages from a shared reader (since any remaining data in the buffer will be discarded). We therefore add a new `protoio` package with an unbuffered `NewDelimitedReader()`. Additionally, the `NewDelimitedWriter()` returns the number of bytes written, and we've added `MarshalDelimited()` and `UnmarshalDelimited()`, to ease migration of existing code.
Closes#4603
Commands used (VIM):
```
:args `rg -l errors.Wrap`
:argdo normal @q | update
```
where q is a macros rewriting the `errors.Wrap` to `fmt.Errorf`.
* format: add format cmd & goimport repo
- replaced format command
- added goimports to format command
- ran goimports
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* fix outliers & undo proto file changes
* lint: golint issue fixes
- on my local machine golint is a lot stricter than the bot so slowly going through and fixing things.
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* more fixes from golint
* remove isPeerPersistentFn
* add changelog entry
* libs/common: Refactor libs/common 5
- move mathematical functions and types out of `libs/common` to math pkg
- move net functions out of `libs/common` to net pkg
- move string functions out of `libs/common` to strings pkg
- move async functions out of `libs/common` to async pkg
- move bit functions out of `libs/common` to bits pkg
- move cmap functions out of `libs/common` to cmap pkg
- move os functions out of `libs/common` to os pkg
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* fix testing issues
* fix tests
closes#41417
woooooooooooooooooo kill the cmn pkg
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
* fix goimport issues
* run gofmt
* libs/common: Refactor libs/common 4
- move byte function out of cmn to its own pkg
- move tempfile out of cmn to its own pkg
- move throttletimer to its own pkg
ref #4147
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
* fix linting issues
* libs/common: refactor libs common 3
- move nil.go into types folder and make private
- move service & baseservice out of common into service pkg
ref #4147
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
* libs/common: refactor libs/common 2
- move random function to there own pkg
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* change imports and usage throughout repo
* fix goimports
* add changelog entry
* p2p/conn: simplify secret connection handshake malleability fix with merlin
Introduces new dependencies on github.com/gtank/merlin and sha3 as a cryptographic primitive
This also only uses the transcript hash as a MAC.
* p2p/conn: avoid string to byte conversion
https://github.com/uber-go/guide/blob/master/style.md#avoid-string-to-byte-conversion
## Issue:
This is an approach to fixing secret connection that is more noise-ish than actually noise.
but it essentially fixes the problem that #3315 is trying to solve by making the secret connection handshake non-malleable. It's easy to understand and I think will be acceptable to @jaekwon
.. the formal reasoning is basically, if the "view" of the transcript between diverges between the sender and the receiver at any point in the protocol, the handshake would terminate.
The base protocol of Station to Station mistakenly assumes that if the sender and receiver arrive at shared secret they have the same view. This is only true for a DH on prime order groups.
This robustly solves the problem by having each cryptographic operation commit to operators view of the protocol.
Another nice thing about a transcript is it provides the basis for "secure" (barring cryptographic breakages, horrible design flaws, or implementation bugs) downgrades, where a backwards compatible handshake can be used to offer newer protocol features/extensions, peers agree to the common subset of what they support, and both sides have to agree on what the other offered for the transcript MAC to verify.
With something like Protos/Amino you already get "extensions" for free (TLS uses a simple TLV format https://tools.ietf.org/html/rfc8446#section-4.2 for extensions not too far off from Protos/Amino), so as long as you cryptographically commit to what they contain in the transcript, it should be possible to extend the protocol in a backwards-compatible manner.
## Commits:
* Minimal changes to remove malleability of secret connection removes the need to check for lower order points.
Breaks compatibility. Secret connections that have no been updated will fail
* Remove the redundant blacklist
* remove remainders of blacklist in tests to make the code compile again
Signed-off-by: Ismail Khoffi <Ismail.Khoffi@gmail.com>
* Apply suggestions from code review
Apply Ismail's error handling
Co-Authored-By: Ismail Khoffi <Ismail.Khoffi@gmail.com>
* fix error check for io.ReadFull
Signed-off-by: Ismail Khoffi <Ismail.Khoffi@gmail.com>
* Update p2p/conn/secret_connection.go
Co-Authored-By: Ismail Khoffi <Ismail.Khoffi@gmail.com>
* Update p2p/conn/secret_connection.go
Co-Authored-By: Bot from GolangCI <42910462+golangcibot@users.noreply.github.com>
* update changelog and format the code
* move hkdfInit closer to where it's used
* Fix long line errors in abci, crypto, and libs packages
* Fix long lines in p2p and rpc packages
* Fix long lines in abci, state, and tools packages
* Fix long lines in behaviour and blockchain packages
* Fix long lines in cmd and config packages
* Begin fixing long lines in consensus package
* Finish fixing long lines in consensus package
* Add lll exclusion for lines containing URLs
* Fix long lines in crypto package
* Fix long lines in evidence package
* Fix long lines in mempool and node packages
* Fix long lines in libs package
* Fix long lines in lite package
* Fix new long line in node package
* Fix long lines in p2p package
* Ignore gocritic warning
* Fix long lines in privval package
* Fix long lines in rpc package
* Fix long lines in scripts package
* Fix long lines in state package
* Fix long lines in tools package
* Fix long lines in types package
* Enable lll linter
* Pin range scope vars
* Don't disable scopelint
This PR repairs linter errors seen when running the following commands:
golangci-lint run --no-config --disable-all=true --enable=scopelint
Contributes to #3262
* Remove unnecessary type conversions
* Consolidate repeated strings into consts
* Clothe return statements
* Update blockchain/v1/reactor_fsm_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
This PR repairs linter errors seen when running the following commands:
golangci-lint run --no-config --disable-all=true --enable=unconvert
golangci-lint run --no-config --disable-all=true --enable=goconst
golangci-lint run --no-config --disable-all=true --enable=nakedret
Contributes to #3262
* init of (2/2) common errors
* Remove instances of cmn.Error (2/2)
- Replace usage of cmnError and errorWrap
- ref #3862
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* comment wording
* simplify IsErrXXX functions
* log panic along with stopping the MConnection
* p2p: fix false-positive error logging when stopping connections
This changeset fixes two types of false-positive errors occurring during
connection shutdown.
The first occurs when the process invokes FlushStop() or Stop() on a
connection. While the previous behavior did properly wait for the sendRoutine
to finish, it did not notify the recvRoutine that the connection was shutting
down. This would cause the recvRouting to receive and error when reading and
log this error. The changeset fixes this by notifying the recvRoutine that
the connection is shutting down.
The second occurs when the connection is terminated (gracefully) by the other side.
The recvRoutine would get an EOF error during the read, log it, and stop the connection
with an error. The changeset detects EOF and gracefully shuts down the connection.
* bring back the comment about flushing
* add changelog entry
* listen for quitRecvRoutine too
* we have to call stopForError
Otherwise peer won't be removed from the peer set and maybe readded
later.
cleanup to add linter
grpc change:
https://godoc.org/google.golang.org/grpc#WithContextDialerhttps://godoc.org/google.golang.org/grpc#WithDialer
grpc/grpc-go#2627
prometheous change:
due to UninstrumentedHandler, being deprecated in the future
empty branch = empty if or else statement
didn't delete them entirely but commented
couldn't find a reason to have them
could not replicate the issue #3406
but if want to keep it commented then we should comment out the if statement as well
* Renamed wire.go to codec.go
- Wire was the previous name of amino
- Codec describes the file better than `wire` & `amino`
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* ide error
* rename amino.go to codec.go
* Remove deprecated PanicXXX functions from codebase
As per discussion over
[here](https://github.com/tendermint/tendermint/pull/3456#discussion_r278423492),
we need to remove these `PanicXXX` functions and eliminate our
dependence on them. In this PR, each and every `PanicXXX` function call
is replaced with a simple `panic` call.
* add a changelog entry
* p2p: refactor Switch#Broadcast func
- call wg.Add only once
- do not call peers.List twice!
* bad for perfomance
* peers list can change in between calls!
Refs #3306
* p2p: use time.Ticker instead of RepeatTimer
no need in RepeatTimer since we don't Reset them
Refs #3306
* libs/common: remove RepeatTimer (also TimerMaker and Ticker interface)
"ancient code that’s caused no end of trouble" Ethan
I believe there's much simplier way to write a ticker than can be reset
https://medium.com/@arpith/resetting-a-ticker-in-go-63858a2c17ec
Marko
Erik Grinaker
Anton Kaliaev
Alessio Treglia
n-hutton
Erik Grinaker
Zaki Manian
Phil Salant
Zaki Manian
zjubfd
Ivan Kushmantsev
Thane Thomson