* rpc/core: return an error if `page=0`

Closes #4942

affected endpoints:

- /validators
- /tx_search

* swagger: update doc for /unconfirmed_txs

## Description

- remove keyname suffix from keys


Closes: #2228

Ethermint currently has to maintain a map height-> block hash on the store (see here) as it needs to expose the eth_getBlockByHash JSON-RPC query for Web3 compatibility. This query is currently not supported by the tendermint RPC client.

## Description

I was able to reproduce this non-determinism locally
After increasing the timeout to 8 seconds from 5 I was not able to reproduce it

Closes: #2856

Mitigates race condition causing these test failures:

```
=== RUN   TestTxEventsSentWithBroadcastTxAsync
=== RUN   TestTxEventsSentWithBroadcastTxAsync/*http.HTTP
I[2020-05-25|12:29:08.477] Starting WSEvents service                    impl=WSEvents
    TestTxEventsSentWithBroadcastTxAsync/*http.HTTP: event_test.go:124: 
        	Error Trace:	event_test.go:124
        	Error:      	Expected nil, but got: &errors.errorString{s:"timed out waiting for event"}
        	Test:       	TestTxEventsSentWithBroadcastTxAsync/*http.HTTP
        	Messages:   	0: timed out waiting for event
```

Fixes race conditions causing the following test failures:

```
=== RUN   TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:342:
                Error Trace:    rpc_test.go:342
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:343:
                Error Trace:    rpc_test.go:343
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:345:
                Error Trace:    rpc_test.go:345
                Error:          Not equal:
                                expected: types.Txs{types.Tx{0x39, 0x44, 0x4d, 0x6c, 0x4b, 0x66, 0x46, 0x78, 0x3d, 0x45, 0x33, 0x33, 0x68, 0x47, 0x6e, 0x79, 0x58}}
                                actual  : types.Txs(nil)

                                Diff:
                                --- Expected
                                +++ Actual
                                @@ -1,4 +1,2 @@
                                -(types.Txs) (len=1) {
                                - (types.Tx) (len=17) Tx{39444D6C4B6646783D45333368476E7958}
                                -}
                                +(types.Txs) <nil>

                Test:           TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:342:
                Error Trace:    rpc_test.go:342
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:343:
                Error Trace:    rpc_test.go:343
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestUnconfirmedTxs
    TestUnconfirmedTxs: rpc_test.go:345:
                Error Trace:    rpc_test.go:345
                Error:          Not equal:
                                expected: types.Txs{types.Tx{0x39, 0x44, 0x4d, 0x6c, 0x4b, 0x66, 0x46, 0x78, 0x3d, 0x45, 0x33, 0x33, 0x68, 0x47, 0x6e, 0x79, 0x58}}
                                actual  : types.Txs{}

                                Diff:
                                --- Expected
                                +++ Actual
                                @@ -1,3 +1,2 @@
                                -(types.Txs) (len=1) {
                                - (types.Tx) (len=17) Tx{39444D6C4B6646783D45333368476E7958}
                                +(types.Txs) {
                                 }
                Test:           TestUnconfirmedTxs
--- FAIL: TestUnconfirmedTxs (0.20s)
=== RUN   TestNumUnconfirmedTxs
    TestNumUnconfirmedTxs: rpc_test.go:364:
                Error Trace:    rpc_test.go:364
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestNumUnconfirmedTxs
    TestNumUnconfirmedTxs: rpc_test.go:365:
                Error Trace:    rpc_test.go:365
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestNumUnconfirmedTxs
    TestNumUnconfirmedTxs: rpc_test.go:364:
                Error Trace:    rpc_test.go:364
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestNumUnconfirmedTxs
    TestNumUnconfirmedTxs: rpc_test.go:365:
                Error Trace:    rpc_test.go:365
                Error:          Not equal:
                                expected: 1
                                actual  : 0
                Test:           TestNumUnconfirmedTxs
--- FAIL: TestNumUnconfirmedTxs (0.09s)
```

Fixes the following test race condition:

```
=== RUN   TestAppCalls
    TestAppCalls: rpc_test.go:216:
                Error Trace:    rpc_test.go:216
                Error:          Expected value not to be nil.
                Test:           TestAppCalls
--- FAIL: TestAppCalls (2.20s)
```

## Description

various linitng fixes

in /validators, /consensus_params and /status

Closes #3161

## Description

remove test files for proto stubs

Closes: #XXX

Closes https://github.com/tendermint/tendermint/issues/3857

Moves `lib/` folder to `jsonrpc/`.

Renames:

**packages**

`rpc` package -> `jsonrpc` package
`rpcclient` package -> `client` package
`rpcserver` package -> `server` package

**structs and interfaces**

```
JSONRPCClient to Client
JSONRPCRequestBatch to RequestBatch
JSONRPCCaller to Caller
```

**functions**

```
StartHTTPServer to Serve
StartHTTPAndTLSServer to ServeTLS

rpc/jsonrpc/client: rename NewURIClient to NewURI

NewJSONRPCClient to New
NewJSONRPCClientWithHTTPClient to NewWithHTTPClient
NewWSClient to NewWS
```

**misc**

- unexpose `ResponseWriterWrapper`
- remove unused http_params.go

Closes #3433

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`.

## Description

remove duplicate BlockID in swagger files

Closes: #XXX

Fixes #4802. The Go HTTP server has a global panic handler for requests, so it was not as severe as first thought.

This fix can still panic, since we try to send a `500` response - if that happens, the Go HTTP server will terminate the connection. Otherwise, the client will get a 200 response, which we should avoid. I'm sort of torn on whether it's even necessary to include this fix, instead of just letting the HTTP server deal with it.

thus enabling faster commit verification assuming non uniform distribution of power.

Closes #2478

spec: https://github.com/tendermint/spec/pull/91

Fixes #828. Adds state sync, as outlined in [ADR-053](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-053-state-sync-prototype.md). See related PRs in Cosmos SDK (https://github.com/cosmos/cosmos-sdk/pull/5803) and Gaia (https://github.com/cosmos/gaia/pull/327).

This is split out of the previous PR #4645, and branched off of the ABCI interface in #4704. 

* Adds a new P2P reactor which exchanges snapshots with peers, and bootstraps an empty local node from remote snapshots when requested.

* Adds a new configuration section `[statesync]` that enables state sync and configures the light client. Also enables `statesync:info` logging by default.

* Integrates state sync into node startup. Does not support the v2 blockchain reactor, since it needs some reorganization to defer startup.

this pr brings over the removal of pubkey from duplicatevote evidence from proto-breakage

ref #4580

merged the existing store into pool, consolidated the three buckets into two, used block height as a marked for committed evidence, evidence list recovers on start up, improved error handling

The PR added a new field `index` to event attribute, that will cause indexer service to index the event if set to true.

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

Closes: #4695

Verify /block_results and /validators responses from an HTTP client using the light client.

Added count and total to /validators response.

Refs #3113

Add Has function, create better handling of errors when adding evidence, usage of error types.

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

* Added BlockStore.DeleteBlock()

* Added initial block pruner prototype

* wip

* Added BlockStore.PruneBlocks()

* Added consensus setting for block pruning

* Added BlockStore base

* Error on replay if base does not have blocks

* Handle missing blocks when sending VoteSetMaj23Message

* Error message tweak

* Properly update blockstore state

* Error message fix again

* blockchain: ignore peer missing blocks

* Added FIXME

* Added test for block replay with truncated history

* Handle peer base in blockchain reactor

* Improved replay error handling

* Added tests for Store.PruneBlocks()

* Fix non-RPC handling of truncated block history

* Panic on missing block meta in needProofBlock()

* Updated changelog

* Handle truncated block history in RPC layer

* Added info about earliest block in /status RPC

* Reorder height and base in blockchain reactor messages

* Updated changelog

* Fix tests

* Appease linter

* Minor review fixes

* Non-empty BlockStores should always have base > 0

* Update code to assume base > 0 invariant

* Added blockstore tests for pruning to 0

* Make sure we don't prune below the current base

* Added BlockStore.Size()

* config: added retain_blocks recommendations

* Update v1 blockchain reactor to handle blockstore base

* Added state database pruning

* Propagate errors on missing validator sets

* Comment tweaks

* Improved error message

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

* use ABCI field ResponseCommit.retain_height instead of retain-blocks config option

* remove State.RetainHeight, return value instead

* fix minor issues

* rename pruneHeights() to pruneBlocks()

* noop to fix GitHub borkage

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

* rpc/client: initial split into directories

* lite2: split out test package

* rpc/client: simplify client constructurs

* updated docs

* updated changelog

Closes: #4606

* 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

but HTTP client is not running.

`Subscribe`, `Unsubscribe(All)` methods return an error now.

Closes #4568

Closes #3935

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

Using the WebSocket server, when the same client calls multiple time the subscribe method, only the last subscription receives all the events of the previous ones.

example:

    subscription1 = tm.event = 'NewBlock'
    subscription2 = tm.event = 'Tx'

In this case, subscription2 will receive the new blocks but subscription1 will not.

This came from the WebSocket handler that had the declaration of the rpcrequest moved and so overridden for every request and given in the JSONReq client context (so the id of the subscription was not the right one).

This fixes the issue by simply declaring the rpcrequest inside the loop so every request will create a new object without overwriting the previous one.

before:
&http{AFBSD743A...}

after:
http{https://127.0.0.1:26657}

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

* proto: minor linting

minor linting after working with the proto files in the sdk.

there is no logic change just spacing fixes

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

* hardcore linting

* proto: add buf and protogen script

- add buf with minimal changes
- add protogen script to easier generate proto files

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

* add protoc needs

* add some needed shell cmds

* remove buf from tools as it is not needed everytime

* add proto lint and breakage to ci

* add section in changelog and upgrading files

* address pr comments

* remove space in circle config

* remove spaces in makefile comment

* add section on contributing on how to work with proto

* bump buf to 0.7

* test bufbuild image

* test install make in bufbuild image

* revert to tendermintdev image

* Update Makefile

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

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

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

* 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

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>

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>