* lite2: make witnesses mandatory

at least one witness is required

* lite2: return an error if there are no witnesses

https://github.com/tendermint/tendermint/pull/4358#pullrequestreview-350635444

* cmd/lite: add witnesses flag

* fix linter errors

Bumps [github.com/golang/protobuf](https://github.com/golang/protobuf) from 1.3.2 to 1.3.3.
- [Release notes](https://github.com/golang/protobuf/releases)
- [Commits](https://github.com/golang/protobuf/compare/v1.3.2...v1.3.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Closes #4350

Checks that the chain ID of the witness and that of the lite client are the same before updating the witness list.

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.26.0 to 1.27.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.26.0...v1.27.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Closes #4330

not MaxOpenConnections

Fixes #4311

Also, set MaxBodyBytes, MaxHeaderBytes and WriteTimeout similar to HTTP
server.

* lite2: add Start method

There are few reasons to do that:

1) separation of state and dynamics (some users will want to delay
   starting the light client; does not matter we should not allow them
   to create a light client object)
2) less important, but some users might not need autoUpdateRoutine and
   removeNoLongerTrustedHeadersRoutine routines

* lite2: wait till routines are finished in Stop

because they are started in Start, it feels more natural to wait for
them to finish in Stop.

* lite2: add TrustedValidatorSet func

* refactor cleanup code

* changed restore header and val function to handle negative height

* reverted restoreTrustedHeaderAndNextVals() functionality

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

* docs: update links to rpc

- links to rpc have not been updated. thank you @okwme

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* Update docs/app-dev/indexing-transactions.md

Closes #4341

I have added order_by which can be "asc" or "desc" (should be in string format) in the tx_search RPC method.

Fixes: #3333

Author: @princesinha19

* lite2: add Start method

There are few reasons to do that:

1) separation of state and dynamics (some users will want to delay
   starting the light client; does not matter we should not allow them
   to create a light client object)
2) less important, but some users might not need autoUpdateRoutine and
   removeNoLongerTrustedHeadersRoutine routines

* lite2: wait till routines are finished in Stop

because they are started in Start, it feels more natural to wait for
them to finish in Stop.

* lite2: add TrustedValidatorSet func

* Add adr-051 to docs

* add details

* Update docs/architecture/adr-051-double-signing-protection-with-tendermint-mode.md

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* rename adr-051 for only double singing protection

* remove contents about tendermint mode

* change title to Double Signing Rist Reduction

* rename adr md file

* add a adr link to ToC

Co-authored-by: b-harvest <38277329+dlguddus@users.noreply.github.com>
Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

* docs: minor doc fixes

- minor doc fixes that i ran into while reading things
- test if we have github actions

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* no github actions yet

* add with

* revert and change wording

* lite2: advance to latest header

without any exponential steps

rename autoUpdate to autoUpdateRoutine

* lite2: wait in Cleanup until goroutines finished running

* lite2: move AutoClient into Client

Most of the users will want auto update feature, so it makes sense to
move it into the Client itself, rather than having a separate
abstraction (it makes the code cleaner, but introduces an extra thing
the user will need to learn).

Also, add `FirstTrustedHeight` func to Client to get first trusted height.

* fix db store tests

* separate examples for auto and manual clients

* AutoUpdate tries to update to latest state

NOT 1 header at a time

* fix errors

* lite2: make Logger an option

remove SetLogger func

* fix lite cmd

* lite2: make concurrency assumptions explicit

* fixes after my own review

* no need for nextHeightFn

sequence func will download intermediate headers

* correct comment

* Separate ADR Tendermint Mode from ADR-051

* Update docs/architecture/adr-052-tendermint-mode.md

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Apply suggestions from code review

Co-Authored-By: Marko <marbar3778@yahoo.com>

* Apply suggestions from code review

Co-Authored-By: Marko <marbar3778@yahoo.com>

* remove line of mode info of rpc

* Add link to ADR table of contents

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>
Co-authored-by: Marko <marbar3778@yahoo.com>


    Fullnode mode : fullnode mode does not have any capability to participate on consensus
    Validator mode : this mode is exactly same as existing state machine behavior. sync without voting on consensus, and participate consensus when fully synced
    Seed mode : lightweight seed mode only for maintain an address book, p2p like TenderSeed

Separate ADR Tendermint Mode from ADR-051 #4262

* rpc: update urls to rpc website

* rpc: check blockMeta is not nil in Commit

Refs #4319

* rpc: check nil blockmeta

- fixes #4319

- check if block meta is nil

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* add changelog entry

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.6.1 to 1.6.2.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.6.1...v1.6.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* rc for 0.33

* address some pr comments

* some adds to upgrade.md

* undo version

Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](https://github.com/pkg/errors/compare/v0.9.0...v0.9.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* docs: add link for installing Tendermint

to Go guides

Refs #4286

* remind users to checkout latest release

when installing from github source

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* dep: update tm-db to 0.4.0

- update 0.4.0 as it is a breaking change and cannot be handled by depndabot

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

*  more work towards error handling

* error and emtpy bytes handling

* work on tests

* add changelog entry, change some error handling

* address some pr comments

* panic in a few more places

* move error higher up

* redo some error handling

* fix some bz == nil to len(bz) == 0

* change statebytes

* cmd/lite: switch to new lite2 package

* update changelog

* shorten the trusting period explanation

Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.8.1 to 0.9.0.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](https://github.com/pkg/errors/compare/v0.8.1...v0.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* rename adjusted to adjacent

Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r352140829

* rename ErrTooMuchChange to ErrNotEnoughVotingPowerSigned

Refs https://github.com/tendermint/tendermint/pull/3989#discussion_r352142785

* verify commit is properly signed

* remove no longer trusted headers

* restore trustedHeader and trustedNextVals

* check trustedHeader using options

Refs https://github.com/tendermint/tendermint/pull/4209#issuecomment-562462165

* use correct var when checking if headers are adjacent

in bisection func
+ replace TODO with a comment

https://github.com/tendermint/tendermint/pull/3989#discussion_r352125455

* return header in VerifyHeaderAtHeight

because that way we avoid DB call

+ add godoc comments
+ check if there are no headers yet in AutoClient

https://github.com/tendermint/tendermint/pull/3989#pullrequestreview-315454506

* TestVerifyAdjacentHeaders: add 2 more test-cases

+ add TestVerifyReturnsErrorIfTrustLevelIsInvalid

* lite: avoid overflow when parsing key in db store!

* lite: rename AutoClient#Err to Errs

* lite: add a test for AutoClient

* lite: fix keyPattern and call itr.Next in db store

* lite: add two tests for db store

* lite: add TestClientRemovesNoLongerTrustedHeaders

* lite: test Client#Cleanup

* lite: test restoring trustedHeader

https://github.com/tendermint/tendermint/pull/4209#issuecomment-562462165

* lite: comment out unused code in test_helpers

* fix TestVerifyReturnsErrorIfTrustLevelIsInvalid after merge

* change defaultRemoveNoLongerTrustedHeadersPeriod

and add docs

* write more doc

* lite: uncomment testable examples

* use stdlog.Fatal to stop AutoClient tests

* make lll linter happy

* separate errors for 2 cases

- the validator set of a skipped header cannot be trusted, i.e. <1/3rd
  of h1 validator set has signed (new error, something like
  ErrNewValSetCantBeTrusted)
- the validator set is trusted but < 2/3rds has signed
  (ErrNewHeaderCantBeTrusted)

https://github.com/tendermint/tendermint/pull/4209#discussion_r360331253

* remove all headers (even the last one) that are outside

of the trusting period. By doing this, we avoid checking the
trustedHeader's hash in checkTrustedHeaderUsingOptions (case #1).

https://github.com/tendermint/tendermint/pull/4209#discussion_r360332460

* explain restoreTrustedHeaderAndNextVals better

https://github.com/tendermint/tendermint/pull/4209#discussion_r360602328

* add ConfirmationFunction option

for optionally prompting for user input Y/n before removing headers

Refs https://github.com/tendermint/tendermint/pull/4209#discussion_r360602945

* make cleaning optional

https://github.com/tendermint/tendermint/pull/4209#discussion_r364838189

* return error when user refused to remove headers

* check for double votes in VerifyCommitTrusting

* leave only ErrNewValSetCantBeTrusted error

to differenciate between h2Vals.VerifyCommit and
h1NextVals.VerifyCommitTrusting

* fix example tests

* remove unnecessary if condition

https://github.com/tendermint/tendermint/pull/4209#discussion_r365171847

It will be handled by the above switch.

* verifyCommitBasic does not depend on vals

Co-authored-by: Marko <marbar3778@yahoo.com>

before getting its address in recordMetrics

Refs https://github.com/tendermint/tendermint/pull/4294#discussion_r364347586

Closes #4248

* evidence: introduce time.Duration to evidence params

- add time.duration to evidence
- this pr is taking pr #2606 and updating it to use both time and height

- closes #2565

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* fix testing and genesis cfg in signer harness

* remove debugging fmt

* change maxageheight to maxagenumblocks, rename other things to block instead of height

* further check of duration

* check duration to not send peers outdated evidence

* change some lines, onward and upward

* refactor evidence package

* add a changelog pending entry

* make mockbadevidence have time and use it

* add what could possibly be called a test case

* remove mockbadevidence and mockgoodevidence in favor of mockevidence

* add a comment for err that is returned

* add a changelog for removal of good & bad evidence

* add a test for adding evidence

* fix test

* add ev to types in testcase

* Update evidence/pool_test.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update evidence/pool_test.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* fix tests

* fix linting

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

- follow up to #4263
- when a commit is nil, then it should be counted as a missed commit

Signed-off-by: Marko Baricevic marbar3778@yahoo.com

The New* client functions return an error instead
of panicking when the remote address is invalid.

Fixes #3953

* added RPC method block_by_hash

* created hash => height

* changes typings

* block_by_hash changes

* Update store/store.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update store/store.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update store/store.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update store/store.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

Bumps [github.com/go-logfmt/logfmt](https://github.com/go-logfmt/logfmt) from 0.4.0 to 0.5.0.
- [Release notes](https://github.com/go-logfmt/logfmt/releases)
- [Changelog](https://github.com/go-logfmt/logfmt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/go-logfmt/logfmt/compare/v0.4.0...v0.5.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* fix raw import sr25519

* add sr25519 to multisig codec

* bump go-schnorrkel

Co-authored-by: Marko <marbar3778@yahoo.com>

Fixes sr25519 pubkey generation and signing when importing from raw bytes

* pass `outCapacity` to `eventBus#Subscribe` when subscribing using a local client

Fixes #4256

* use outCap directly

previous PR seems to have deleted the tools cmd, this adds it back in

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* cmd/debug: execute p.Signal when p is not nil

https://github.com/tendermint/tendermint/pull/4266#discussion_r360015827

* replace else with else if

- fixed some links in the readme
- deleted some unused things from themakefile

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* test:

- testing replacing syscall with os.FindProces

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* address pr comments

* prometheus/metrics: two new metrics for consensus

- add consensus_validator_power metric so if a node is a validator it can see its own power in prometheus
- add last_signed_height metric so if a node is a validator it can be aware of at which height the most recent time it signed.

- closes: #3773
- closes: #3083

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* check if signature is present

* minor change and check if sig is not absent

* add changelog entry

* Update consensus/state.go

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update CHANGELOG_PENDING.md

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* Update CHANGELOG_PENDING.md

* add label with validator address

* change address to vali_address

* add metric missed blocks

* add changelog entry for missed blocks metric

* address naming & add docs

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.25.1 to 1.26.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.25.1...v1.26.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

also

    - do not send any LastCommitInfo.Votes for 1st block.
    - use cs.LastValidators (not cs.Validators) in recordMetrics when counting missing validators

note:

remember that the first LastCommit is intentionally empty, so it makes
sense for LastCommitInfo.Votes to also be empty. Because we can't really
tell if validator signed or not. Similar for ^ metrics, we can't say if
particular validator was missing or not.

Closes #4192

Address #4089 by clarifying the different uses of "application"

* delete tm-monitor tool #4247

* removed docs

* remove gox