* [cherry-picked] abci++: add consensus parameter logic to control vote extension require height (#8547)
This PR makes vote extensions optional within Tendermint. A new ConsensusParams field, called ABCIParams.VoteExtensionsEnableHeight, has been added to toggle whether or not extensions should be enabled or disabled depending on the current height of the consensus engine. Related to: #8453
* Fix UTs
* fix blocksync reactor import of state store
* fixes1
* fixed_more_UTs
* Fix TestHandshakeReplaySome
* Fix all unit tests
* Added hunk in original commit
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
Co-authored-by: Callum Waters <cmwaters19@gmail.com>
* [cherry-picked] abci++: Vote extension cleanup (#8402)
* Split vote verification/validation based on vote extensions
Some parts of the code need vote extensions to be verified and
validated (mostly in consensus), and other parts of the code don't
because its possible that, in some cases (as per RFC 017), we won't have
vote extensions.
This explicitly facilitates that split.
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Only sign extensions in precommits, not prevotes
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Update privval/file.go
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Apply suggestions from code review
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Temporarily disable extension requirement again for E2E testing
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Reorganize comment for clarity
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Leave vote validation and pre-call nil check up to caller of VoteToProto
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Split complex vote validation test into multiple tests
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Universally enforce no vote extensions on any vote type but precommits
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Make error messages more generic
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Verify with vote extensions when constructing a VoteSet
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Expand comment for clarity
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add extension check for prevotes prior to signing votes
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix supporting test code to only inject extensions into precommits
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Separate vote malleation from signing in vote tests for clarity
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add extension signature length check and corresponding test
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Perform basic vote validation in CommitToVoteSet
Signed-off-by: Thane Thomson <connect@thanethomson.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Appease TestMempoolProgressAfterCreateEmptyBlocksInterval
Co-authored-by: Thane Thomson <connect@thanethomson.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* [cherry-picked] abci: Vote Extension 1 (#6646)
* add proto, add boilerplates
* add canonical
* fix tests
* add vote signing test
* Update internal/consensus/msgs_test.go
* modify state execution in progress
* add extension signing
* VoteExtension -> ExtendVote
* apply review
* update data structures
* Add comments
* Apply suggestions from code review
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
* *Signed -> *ToSign
* add Vote to RequestExtendVote
* apply reviews
* Apply suggestions from code review
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
* fix typo, modify proto
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
* [cherry-picked] ABCI Vote Extension 2 (#6885)
* add proto, add boilerplates
* add canonical
* fix tests
* add vote signing test
* Update internal/consensus/msgs_test.go
* modify state execution in progress
* add extension signing
* add extension signing
* VoteExtension -> ExtendVote
* modify state execution in progress
* add extension signing
* verify in progress
* modify CommitSig
* fix test
* apply review
* update data structures
* Apply suggestions from code review
* Add comments
* fix test
* VoteExtensionSigned => VoteExtensionToSigned
* Apply suggestions from code review
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
* *Signed -> *ToSign
* add Vote to RequestExtendVote
* add example VoteExtension
* apply reviews
* fix vote
* Apply suggestions from code review
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
* fix typo, modify proto
* add abcipp_kvstore.go
* add extension test
* fix test
* fix test
* fix test
* fit lint
* uncomment test
* refactor test in progress
* gofmt
* apply review
* fix lint
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
* [cheryy-picked] abci: PrepareProposal-VoteExtension integration [2nd try] (#7821)
* PrepareProposal-VoteExtension integration (#6915)
* make proto-gen
* Fix protobuf crash in e2e nightly tests
* Update types/vote.go
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Addressed @creachadair's comments
Co-authored-by: mconcat <monoidconcat@gmail.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* [cherry-picked] Vote extensions: new design (#8031)
* Changed the spec text to agreed VoteExtension solution
* Revert "Removed protobufs related to vote extensions"
This reverts commit 4566f1e302.
* Changes to ABCI protocol buffers
* Update spec/core/data_structures.md
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Update spec/core/data_structures.md
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Fix dangling link in ABCI++ readme
* Addressed comments
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* [cherry-picked] abci++: Sync implementation and spec for vote extensions (#8141)
* Refactor so building and linting works
This is the first step towards implementing vote extensions: generating
the relevant proto stubs and getting the build and linter to pass.
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix typo
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Better describe method given vote extensions
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix types tests
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Move CanonicalVoteExtension to canonical types proto defs
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Regenerate protos including latest PBTS synchrony params update
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Inject vote extensions into proposal
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Thread vote extensions through code and fix tests
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove extraneous empty value initialization
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix lint
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix missing VerifyVoteExtension request data
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Explicitly ensure length > 0 to sign vote extension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Explicitly ensure length > 0 to sign vote extension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove extraneous comment
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Update privval/file.go
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Update types/vote_test.go
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Format
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Fix ABCI proto generation scripts for Linux
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Sync intermediate and goal protos
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Update internal/consensus/common_test.go
Co-authored-by: Sergio Mena <sergio@informal.systems>
* Use dummy value with clearer meaning
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Rewrite loop for clarity
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Panic on ABCI++ method call failure
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add strong correctness guarantees when constructing extended commit info for ABCI++
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add strong guarantee in extendedCommitInfo that the number of votes corresponds
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Make extendedCommitInfo function more robust
At first extendedCommitInfo expected votes to be in the same order as
their corresponding validators in the supplied CommitInfo struct, but
this proved to be rather difficult since when a validator set's loaded
from state it's first sorted by voting power and then by address.
Instead of sorting the votes in the same way, this approach simply maps
votes to their corresponding validator's address prior to constructing
the extended commit info. This way it's easy to look up the
corresponding vote and we don't need to care about vote order.
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove extraneous validator address assignment
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Sign over canonical vote extension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Validate vote extension signature against canonical vote extension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Update privval tests for more meaningful dummy value
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add vote extension capability to E2E test app
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Disable lint for weak RNG usage for test app
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Use parseVoteExtension instead of custom parsing in PrepareProposal
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Only include extension if we have received txs
It's unclear at this point why this is necessary to ensure that the
application's local app_hash matches that committed in the previous
block.
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Require app_hash from app to match that from last block
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add contrived (possibly flaky) test to check that vote extensions code works
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove workaround for problem now solved by #8229
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* add tests for vote extension cases
* Fix spelling mistake to appease linter
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Collapse redundant if statement
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Formatting
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Always expect an extension signature, regardless of whether an extension is present
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Votes constructed from commits cannot include extensions or signatures
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Pass through vote extension in test helpers
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Temporarily disable vote extension signature requirement
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Expand on vote equality test errors for clarity
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Expand on vote matching error messages in testing
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Allow for selective subscription by vote type
This is an attempt to fix the intermittently failing
`TestPrepareProposalReceivesVoteExtensions` test in the internal
consensus package.
Occasionally we get prevote messages via the subscription channel, and
we're not interested in those. This change allows us to specify what
types of votes we're interested in (i.e. precommits) and discard the
rest.
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Read lock consensus state mutex in test helper to avoid data race
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Revert BlockIDFlag parameter in node test
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Perform additional check in ProcessProposal for special txs generated by vote extensions
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* e2e: check that our added tx does not cause all txs to exceed req.MaxTxBytes
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Only set vote extension signatures when signing is successful
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove channel capacity constraint in test helper to avoid missing messages
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add TODO to always require extension signatures in vote validation
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* e2e: reject vote extensions if the request height does not match what we expect
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* types: remove extraneous call to voteWithoutExtension in test
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Remove unnecessary address parameter from CanonicalVoteExtension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* privval: change test vote type to precommit since we use an extension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* privval: update signing logic to cater for vote extensions
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* proto: update field descriptions for vote message
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* proto: update field description for vote extension sig in vote message
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* proto/types: use fixed-length 64-bit integers for rounds in CanonicalVoteExtension
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* consensus: fix flaky TestPrepareProposalReceivesVoteExtensions
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* consensus: remove previously added test helper functionality
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* e2e: add error logs when we get an unexpected height in ExtendVote or VerifyVoteExtension requests
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* node_test: get validator addresses from privvals
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* privval/file_test: optimize filepv creation in tests
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* privval: add test to check that vote extensions are always signed
Signed-off-by: Thane Thomson <connect@thanethomson.com>
* Add a script to check documentation for ToC entries. (#8356)
This script verifies that each document in the docs and architecture directory
has a corresponding table-of-contents entry in its README file. It can be run
manually from the command line.
- Hook up this script to run in CI (optional workflow).
- Update ADR ToC to include missing entries this script found.
* build(deps): Bump async from 2.6.3 to 2.6.4 in /docs (#8357)
Bumps [async](https://github.com/caolan/async) from 2.6.3 to 2.6.4.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md)
- [Commits](https://github.com/caolan/async/compare/v2.6.3...v2.6.4)
---
updated-dependencies:
- dependency-name: async
dependency-type: indirect
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
* privval/file_test: reset vote ext sig before signing
Signed-off-by: Thane Thomson <connect@thanethomson.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
Co-authored-by: Sergio Mena <sergio@informal.systems>
Co-authored-by: William Banfield <wbanfield@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
* Fix cherry-picks
* make proto-gen
* make mockery
* fix build
* All units tests passing
* linter error
* Update consensus/state_test.go
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
* Addressed @williambanfield's comments
* Go, not C!
Co-authored-by: mconcat <monoidconcat@gmail.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
Co-authored-by: Thane Thomson <connect@thanethomson.com>
Co-authored-by: William Banfield <wbanfield@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
* mempool: length prefix txs when getting them from mempool (#5483)
* correctly calculate evidence data size (#5482)
* block: use commit sig size instead of vote size (#5490)
* tx: reduce function to one parameter (#5493)
## 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
* test-vectors for backwards compatibility:
- copy & paste test-vectors from v0.33.5 to ensure
backwards compatibility for vote's SignBytes
* WIP: everything besides time seems to match :-/
* almost
* Found the culprit: field nums weren't consecutive ints ...
* fix order of partset header too
* this last votes-related test can easily be fixed
* some minor changes and fix last failing test
* move proto types back to stdtime, fix various linting
* use libs/protoio
* remvoe commented code
* add comments
* fix tests
* uncomment testscases
* dont ignore error panic
* fix signable test
* fix happy path testing
* fix comment
Co-authored-by: Marko Baricevic <marbar3778@yahoo.com>
Closes: #4530
This PR contains logic for both submitting an evidence by the light client (lite2 package) and receiving it on the Tendermint side (/broadcast_evidence RPC and/or EvidenceReactor#Receive). Upon receiving the ConflictingHeadersEvidence (introduced by this PR), the Tendermint validates it, then breaks it down into smaller pieces (DuplicateVoteEvidence, LunaticValidatorEvidence, PhantomValidatorEvidence, PotentialAmnesiaEvidence). Afterwards, each piece of evidence is verified against the state of the full node and added to the pool, from which it's reaped upon block creation.
* rpc/client: do not pass height param if height ptr is nil
* rpc/core: validate incoming evidence!
* only accept ConflictingHeadersEvidence if one
of the headers is committed from this full node's perspective
This simplifies the code. Plus, if there are multiple forks, we'll
likely to receive multiple ConflictingHeadersEvidence anyway.
* swap CommitSig with Vote in LunaticValidatorEvidence
Vote is needed to validate signature
* no need to embed client
http is a provider and should not be used as a client
* 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
* types: change `Commit` to consist of just signatures
These are final changes towards removing votes from commit and leaving
only signatures (see ADR-25)
Fixes#1648
* bring back TestCommitToVoteSetWithVotesForAnotherBlockOrNilBlock
+ add absent flag to Vote to indicate that it's for another block
* encode nil votes as CommitSig with BlockIDFlagAbsent
+ make Commit#Precommits array of non-pointers
because precommit will never be nil
* add NewCommitSigAbsent and Absent() funcs
* uncomment validation in CommitSig#ValidateBasic
* add comments to ValidatorSet funcs
* add a changelog entry
* break instead of continue
continue does not make sense in these cases
* types: rename Commit#Precommits to Signatures
* swagger: fix /commit response
* swagger: change block_id_flag type
* fix merge conflicts
* 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
* 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
* types: memoize height/round in commit instead of first vote
* types: commit.ValidateBasic in VerifyCommit
* types: new CommitSig alias for Vote
In preparation for reducing the redundancy in Commits, we introduce the
CommitSig as an alias for Vote. This is non-breaking on the protocol,
and minor breaking on the Go API, as Commit now contains a list of
CommitSig instead of Vote.
* remove dependence on ToVote
* update some comments
* fix tests
* fix tests
* fixes from review
* Consistent order fields of Timestamp/BlockID fields in CanonicalVote and
CanonicalProposal
* update spec too
* Introduce and use IsZero & IsComplete:
- update IsZero method according to spec and introduce IsComplete
- use methods in validate basic to validate: proposals come with a
"complete" blockId and votes are either complete or empty
- update spec: BlockID.IsNil() -> BlockID.IsZero() and fix typo
* BlockID comes first
* fix tests
* validate reactor messages
Refs #2683
* validate blockchain messages
Refs #2683
* validate evidence messages
Refs #2683
* todo
* check ProposalPOL and signature sizes
* add a changelog entry
* check addr is valid when we add it to the addrbook
* validate incoming netAddr (not just nil check!)
* fixes after Bucky's review
* check timestamps
* beef up block#ValidateBasic
* move some checks into bcBlockResponseMessage
* update Gopkg.lock
Fix
```
grouped write of manifest, lock and vendor: failed to export github.com/tendermint/go-amino: fatal: failed to unpack tree object 6dcc6ddc143e116455c94b25c1004c99e0d0ca12
```
by running `dep ensure -update`
* bump year since now we check it
* generate test/p2p/data on the fly using tendermint testnet
* allow sync chains older than 1 year
* use full path when creating a testnet
* move testnet gen to test/docker/Dockerfile
* relax LastCommitRound check
Refs #2737
* fix conflicts after merge
* add small comment
* some ValidateBasic updates
* fixes
* AppHash length is not fixed
* WIP: switching to fixed offsets for SignBytes
* add version field to sign bytes and update order
* more comments on test-cases and add a tc with a chainID
* remove amino:"write_empty" tag
- it doesn't affect if default fixed size fields ((u)int64) are
written or not
- add comment about int->int64 casting
* update CHANGELOG_PENDING
* update documentation
* add back link to issue #1622 in documentation
* remove JSON tags and add (failing test-case)
* fix failing test
* update test-vectors due to added `Type` field
* change Type field from string to byte and add new type alias
- SignedMsgType replaces VoteTypePrevote, VoteTypePrecommit and adds new
ProposalType to separate votes from proposal when signed
- update test-vectors
* fix remains from rebasing
* use SignMessageType instead of byte everywhere
* fixes from review
* switch to amino for SignBytes and add Reply with error message
- currently only Vote is done
* switch Reply type in socket for other messages
- add error description on error
* add TODOs regarding error handling
* address comments from peer review session (thx @xla)
- contains all changes besides the test-coverage / error'ing branches
* increase test coverage:
- add tests for each newly introduced error'ing code path
* return error if received wrong response
* add test for wrong response branches (ErrUnexpectedResponse)
* update CHANGELOG_PENDING and related documentation (spec)
* fix typo: s/CanonicallockID/CanonicalBlockID
* fixes from review
* follow up to removing some consensus params Refs #2382
* change args type to int64 in state#makeParams
* make valsCount and evidenceCount ints again
* MaxEvidenceBytesPerBlock: include magic number in godoc
* [spec] creating a proposal
* test state#TxFilter
* panic if MaxDataBytes is less than 0
* fixes after review
* use amino#UvarintSize to calculate overhead
0c74291f3b/encoder.go (L85-L90)
* avoid cyclic imports
* you can do better Go, come on
* remove testdouble package
