Merge pull request #3023 from tendermint/release/v0.27.1

Release/v0.27.1

.circleci/config.yml

@@ -7,6 +7,13 @@ defaults: &defaults
   environment:
     GOBIN: /tmp/workspace/bin
 
+docs_update_config: &docs_update_config
+  working_directory: ~/repo
+  docker:
+    - image: tendermint/docs_deployment
+  environment:
+    AWS_REGION: us-east-1
+
 jobs:
   setup_dependencies:
     <<: *defaults
@@ -339,10 +346,25 @@ jobs:
           name: upload
           command: bash .circleci/codecov.sh -f coverage.txt
 
+  deploy_docs:
+    <<: *docs_update_config
+    steps:
+      - checkout
+      - run:
+          name: Trigger website build
+          command: |
+            chamber exec tendermint -- start_website_build
+
 workflows:
   version: 2
   test-suite:
     jobs:
+      - deploy_docs:
+          filters:
+            branches:
+              only:
+                - master
+                - develop
       - setup_dependencies
       - lint:
           requires:

CHANGELOG.md

@@ -1,5 +1,140 @@
 # Changelog
 
+## v0.27.1
+
+*December 15th, 2018*
+
+Special thanks to external contributors on this release:
+@danil-lashin, @hleb-albau, @james-ray, @leo-xinwang
+
+### FEATURES:
+- [rpc] [\#2964](https://github.com/tendermint/tendermint/issues/2964) Add `UnconfirmedTxs(limit)` and `NumUnconfirmedTxs()` methods to HTTP/Local clients (@danil-lashin)
+- [docs] [\#3004](https://github.com/tendermint/tendermint/issues/3004) Enable full-text search on docs pages
+
+### IMPROVEMENTS:
+- [consensus] [\#2971](https://github.com/tendermint/tendermint/issues/2971) Return error if ValidatorSet is empty after InitChain
+  (@leo-xinwang)
+- [ci/cd] [\#3005](https://github.com/tendermint/tendermint/issues/3005) Updated CircleCI job to trigger website build when docs are updated
+- [docs] Various updates
+
+### BUG FIXES:
+- [cmd] [\#2983](https://github.com/tendermint/tendermint/issues/2983) `testnet` command always sets `addr_book_strict = false`
+- [config] [\#2980](https://github.com/tendermint/tendermint/issues/2980) Fix CORS options formatting
+- [kv indexer] [\#2912](https://github.com/tendermint/tendermint/issues/2912) Don't ignore key when executing CONTAINS
+- [mempool] [\#2961](https://github.com/tendermint/tendermint/issues/2961) Call `notifyTxsAvailable` if there're txs left after committing a block, but recheck=false
+- [mempool] [\#2994](https://github.com/tendermint/tendermint/issues/2994) Reject txs with negative GasWanted
+- [p2p] [\#2990](https://github.com/tendermint/tendermint/issues/2990) Fix a bug where seeds don't disconnect from a peer after 3h
+- [consensus] [\#3006](https://github.com/tendermint/tendermint/issues/3006) Save state after InitChain only when stateHeight is also 0 (@james-ray)
+
+## v0.27.0
+
+*December 5th, 2018*
+
+Special thanks to external contributors on this release:
+@danil-lashin, @srmo
+
+Special thanks to @dlguddus for discovering a [major
+issue](https://github.com/tendermint/tendermint/issues/2718#issuecomment-440888677)
+in the proposer selection algorithm.
+
+Friendly reminder, we have a [bug bounty
+program](https://hackerone.com/tendermint).
+
+This release is primarily about fixes to the proposer selection algorithm
+in preparation for the [Cosmos Game of
+Stakes](https://blog.cosmos.network/the-game-of-stakes-is-open-for-registration-83a404746ee6).
+It also makes use of the `ConsensusParams.Validator.PubKeyTypes` to restrict the
+key types that can be used by validators, and removes the `Heartbeat` consensus
+message.
+
+### BREAKING CHANGES:
+
+* CLI/RPC/Config
+  - [rpc] [\#2932](https://github.com/tendermint/tendermint/issues/2932) Rename `accum` to `proposer_priority`
+
+* Go API
+  - [db] [\#2913](https://github.com/tendermint/tendermint/pull/2913)
+    ReverseIterator API change: start < end, and end is exclusive.
+  - [types] [\#2932](https://github.com/tendermint/tendermint/issues/2932) Rename `Validator.Accum` to `Validator.ProposerPriority`
+
+* Blockchain Protocol
+  - [state] [\#2714](https://github.com/tendermint/tendermint/issues/2714) Validators can now only use pubkeys allowed within
+    ConsensusParams.Validator.PubKeyTypes
+
+* P2P Protocol
+  - [consensus] [\#2871](https://github.com/tendermint/tendermint/issues/2871)
+    Remove *ProposalHeartbeat* message as it serves no real purpose (@srmo)
+  - [state] Fixes for proposer selection:
+    - [\#2785](https://github.com/tendermint/tendermint/issues/2785) Accum for new validators is `-1.125*totalVotingPower` instead of 0
+    - [\#2941](https://github.com/tendermint/tendermint/issues/2941) val.Accum is preserved during ValidatorSet.Update to avoid being
+      reset to 0
+
+### IMPROVEMENTS:
+
+- [state] [\#2929](https://github.com/tendermint/tendermint/issues/2929) Minor refactor of updateState logic (@danil-lashin)
+- [node] \#2959 Allow node to start even if software's BlockProtocol is
+  different from state's BlockProtocol
+- [pex] \#2959 Pex reactor logger uses `module=pex`
+
+### BUG FIXES:
+
+- [p2p] \#2968 Panic on transport error rather than continuing to run but not
+  accept new connections
+- [p2p] \#2969 Fix mismatch in peer count between `/net_info` and the prometheus
+  metrics
+- [rpc] \#2408 `/broadcast_tx_commit`: Fix "interface conversion: interface {} in nil, not EventDataTx" panic (could happen if somebody sent a tx using `/broadcast_tx_commit` while Tendermint was being stopped)
+- [state] [\#2785](https://github.com/tendermint/tendermint/issues/2785) Fix accum for new validators to be `-1.125*totalVotingPower`
+  instead of 0, forcing them to wait before becoming the proposer. Also:
+    - do not batch clip
+    - keep accums averaged near 0
+- [txindex/kv] [\#2925](https://github.com/tendermint/tendermint/issues/2925) Don't return false positives when range searching for a prefix of a tag value
+- [types] [\#2938](https://github.com/tendermint/tendermint/issues/2938) Fix regression in v0.26.4 where we panic on empty
+  genDoc.Validators
+- [types] [\#2941](https://github.com/tendermint/tendermint/issues/2941) Preserve val.Accum during ValidatorSet.Update to avoid it being
+  reset to 0 every time a validator is updated
+
+## v0.26.4
+
+*November 27th, 2018*
+
+Special thanks to external contributors on this release:
+@ackratos, @goolAdapter, @james-ray, @joe-bowman, @kostko,
+@nagarajmanjunath, @tomtau
+
+Friendly reminder, we have a [bug bounty
+program](https://hackerone.com/tendermint).
+
+### FEATURES:
+
+- [rpc] [\#2747](https://github.com/tendermint/tendermint/issues/2747) Enable subscription to tags emitted from `BeginBlock`/`EndBlock` (@kostko)
+- [types] [\#2747](https://github.com/tendermint/tendermint/issues/2747) Add `ResultBeginBlock` and `ResultEndBlock` fields to `EventDataNewBlock`
+    and `EventDataNewBlockHeader` to support subscriptions (@kostko)
+- [types] [\#2918](https://github.com/tendermint/tendermint/issues/2918) Add Marshal, MarshalTo, Unmarshal methods to various structs
+  to support Protobuf compatibility (@nagarajmanjunath)
+
+### IMPROVEMENTS:
+
+- [config] [\#2877](https://github.com/tendermint/tendermint/issues/2877) Add `blocktime_iota` to the config.toml (@ackratos)
+    - NOTE: this should be a ConsensusParam, not part of the config, and will be
+      removed from the config at a later date
+      ([\#2920](https://github.com/tendermint/tendermint/issues/2920).
+- [mempool] [\#2882](https://github.com/tendermint/tendermint/issues/2882) Add txs from Update to cache
+- [mempool] [\#2891](https://github.com/tendermint/tendermint/issues/2891) Remove local int64 counter from being stored in every tx
+- [node] [\#2866](https://github.com/tendermint/tendermint/issues/2866) Add ability to instantiate IPCVal (@joe-bowman)
+
+### BUG FIXES:
+
+- [blockchain] [\#2731](https://github.com/tendermint/tendermint/issues/2731) Retry both blocks if either is bad to avoid getting stuck during fast sync (@goolAdapter)
+- [consensus] [\#2893](https://github.com/tendermint/tendermint/issues/2893) Use genDoc.Validators instead of state.NextValidators on replay when appHeight==0 (@james-ray)
+- [log] [\#2868](https://github.com/tendermint/tendermint/issues/2868) Fix `module=main` setting overriding all others
+    - NOTE: this changes the default logging behaviour to be much less verbose.
+      Set `log_level="info"` to restore the previous behaviour.
+- [rpc] [\#2808](https://github.com/tendermint/tendermint/issues/2808) Fix `accum` field in `/validators` by calling `IncrementAccum` if necessary
+- [rpc] [\#2811](https://github.com/tendermint/tendermint/issues/2811) Allow integer IDs in JSON-RPC requests (@tomtau)
+- [txindex/kv] [\#2759](https://github.com/tendermint/tendermint/issues/2759) Fix tx.height range queries
+- [txindex/kv] [\#2775](https://github.com/tendermint/tendermint/issues/2775) Order tx results by index if height is the same
+- [txindex/kv] [\#2908](https://github.com/tendermint/tendermint/issues/2908) Don't return false positives when searching for a prefix of a tag value
+
 ## v0.26.3
 
 *November 17th, 2018*

CHANGELOG_PENDING.md

@@ -1,14 +1,9 @@
-# Pending
-
-## v0.26.4
+## v0.27.2
 
 *TBD*
 
 Special thanks to external contributors on this release:
 
-Friendly reminder, we have a [bug bounty
-program](https://hackerone.com/tendermint).
-
 ### BREAKING CHANGES:
 
 * CLI/RPC/Config

Makefile

@@ -32,6 +32,9 @@ build_race:
 install:
 	CGO_ENABLED=0 go install  $(BUILD_FLAGS) -tags $(BUILD_TAGS) ./cmd/tendermint
 
+install_c:
+	CGO_ENABLED=1 go install  $(BUILD_FLAGS) -tags "$(BUILD_TAGS) gcc" ./cmd/tendermint
+
 ########################################
 ### Protobuf
 
@@ -291,6 +294,7 @@ build-linux:
 build-docker-localnode:
 	cd networks/local
 	make
+	cd -
 
 # Run a 4-node testnet locally
 localnet-start: localnet-stop
@@ -328,4 +332,4 @@ build-slate:
 # To avoid unintended conflicts with file names, always add to .PHONY
 # unless there is a reason not to.
 # https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
-.PHONY: check build build_race build_abci dist install install_abci check_dep check_tools get_tools get_dev_tools update_tools get_vendor_deps draw_deps get_protoc protoc_abci protoc_libs gen_certs clean_certs grpc_dbserver test_cover test_apps test_persistence test_p2p test test_race test_integrations test_release test100 vagrant_test fmt rpc-docs build-linux localnet-start localnet-stop build-docker build-docker-localnode sentry-start sentry-config sentry-stop build-slate protoc_grpc protoc_all
+.PHONY: check build build_race build_abci dist install install_abci check_dep check_tools get_tools get_dev_tools update_tools get_vendor_deps draw_deps get_protoc protoc_abci protoc_libs gen_certs clean_certs grpc_dbserver test_cover test_apps test_persistence test_p2p test test_race test_integrations test_release test100 vagrant_test fmt rpc-docs build-linux localnet-start localnet-stop build-docker build-docker-localnode sentry-start sentry-config sentry-stop build-slate protoc_grpc protoc_all build_c install_c

UPGRADING.md

@@ -3,9 +3,50 @@
 This guide provides steps to be followed when you upgrade your applications to
 a newer version of Tendermint Core.
 
+## v0.27.0
+
+This release contains some breaking changes to the block and p2p protocols,
+but does not change any core data structures, so it should be compatible with
+existing blockchains from the v0.26 series that only used Ed25519 validator keys.
+Blockchains using Secp256k1 for validators will not be compatible. This is due
+to the fact that we now enforce which key types validators can use as a
+consensus param. The default is Ed25519, and Secp256k1 must be activated
+explicitly.
+
+It is recommended to upgrade all nodes at once to avoid incompatibilities at the
+peer layer - namely, the heartbeat consensus message has been removed (only
+relevant if `create_empty_blocks=false` or `create_empty_blocks_interval > 0`),
+and the proposer selection algorithm has changed. Since proposer information is
+never included in the blockchain, this change only affects the peer layer.
+
+### Go API Changes
+
+#### libs/db
+
+The ReverseIterator API has changed the meaning of `start` and `end`.
+Before, iteration was from `start` to `end`, where
+`start > end`. Now, iteration is from `end` to `start`, where `start < end`.
+The iterator also excludes `end`. This change allows a simplified and more
+intuitive logic, aligning the semantic meaning of `start` and `end` in the
+`Iterator` and `ReverseIterator`.
+
+### Applications
+
+This release enforces a new consensus parameter, the
+ValidatorParams.PubKeyTypes. Applications must ensure that they only return
+validator updates with the allowed PubKeyTypes. If a validator update includes a
+pubkey type that is not included in the ConsensusParams.Validator.PubKeyTypes,
+block execution will fail and the consensus will halt.
+
+By default, only Ed25519 pubkeys may be used for validators. Enabling
+Secp256k1 requires explicit modification of the ConsensusParams.
+Please update your application accordingly (ie. restrict validators to only be
+able to use Ed25519 keys, or explicitly add additional key types to the genesis
+file).
+
 ## v0.26.0
 
-New 0.26.0 release contains a lot of changes to core data types and protocols. It is not
+This release contains a lot of changes to core data types and protocols. It is not
 compatible to the old versions and there is no straight forward way to update
 old data to be compatible with the new version.
 
@@ -67,7 +108,7 @@ For more information, see:
 
 ### Go API Changes
 
-#### crypto.merkle
+#### crypto/merkle
 
 The `merkle.Hasher` interface was removed. Functions which used to take `Hasher`
 now simply take `[]byte`. This means that any objects being Merklized should be

blockchain/pool.go

@@ -168,9 +168,12 @@ func (pool *BlockPool) IsCaughtUp() bool {
 		return false
 	}
 
-	// some conditions to determine if we're caught up
-	receivedBlockOrTimedOut := (pool.height > 0 || time.Since(pool.startTime) > 5*time.Second)
-	ourChainIsLongestAmongPeers := pool.maxPeerHeight == 0 || pool.height >= pool.maxPeerHeight
+	// Some conditions to determine if we're caught up.
+	// Ensures we've either received a block or waited some amount of time,
+	// and that we're synced to the highest known height. Note we use maxPeerHeight - 1
+	// because to sync block H requires block H+1 to verify the LastCommit.
+	receivedBlockOrTimedOut := pool.height > 0 || time.Since(pool.startTime) > 5*time.Second
+	ourChainIsLongestAmongPeers := pool.maxPeerHeight == 0 || pool.height >= (pool.maxPeerHeight-1)
 	isCaughtUp := receivedBlockOrTimedOut && ourChainIsLongestAmongPeers
 	return isCaughtUp
 }
@@ -252,7 +255,8 @@ func (pool *BlockPool) AddBlock(peerID p2p.ID, block *types.Block, blockSize int
 			peer.decrPending(blockSize)
 		}
 	} else {
-		// Bad peer?
+		pool.Logger.Info("invalid peer", "peer", peerID, "blockHeight", block.Height)
+		pool.sendError(errors.New("invalid peer"), peerID)
 	}
 }
 
@@ -292,7 +296,7 @@ func (pool *BlockPool) RemovePeer(peerID p2p.ID) {
 func (pool *BlockPool) removePeer(peerID p2p.ID) {
 	for _, requester := range pool.requesters {
 		if requester.getPeerID() == peerID {
-			requester.redo()
+			requester.redo(peerID)
 		}
 	}
 	delete(pool.peers, peerID)
@@ -326,8 +330,11 @@ func (pool *BlockPool) makeNextRequester() {
 	defer pool.mtx.Unlock()
 
 	nextHeight := pool.height + pool.requestersLen()
+	if nextHeight > pool.maxPeerHeight {
+		return
+	}
+
 	request := newBPRequester(pool, nextHeight)
-	// request.SetLogger(pool.Logger.With("height", nextHeight))
 
 	pool.requesters[nextHeight] = request
 	atomic.AddInt32(&pool.numPending, 1)
@@ -453,7 +460,7 @@ type bpRequester struct {
 	pool       *BlockPool
 	height     int64
 	gotBlockCh chan struct{}
-	redoCh     chan struct{}
+	redoCh     chan p2p.ID //redo may send multitime, add peerId to identify repeat
 
 	mtx    sync.Mutex
 	peerID p2p.ID
@@ -465,7 +472,7 @@ func newBPRequester(pool *BlockPool, height int64) *bpRequester {
 		pool:       pool,
 		height:     height,
 		gotBlockCh: make(chan struct{}, 1),
-		redoCh:     make(chan struct{}, 1),
+		redoCh:     make(chan p2p.ID, 1),
 
 		peerID: "",
 		block:  nil,
@@ -524,9 +531,9 @@ func (bpr *bpRequester) reset() {
 // Tells bpRequester to pick another peer and try again.
 // NOTE: Nonblocking, and does nothing if another redo
 // was already requested.
-func (bpr *bpRequester) redo() {
+func (bpr *bpRequester) redo(peerId p2p.ID) {
 	select {
-	case bpr.redoCh <- struct{}{}:
+	case bpr.redoCh <- peerId:
 	default:
 	}
 }
@@ -565,9 +572,13 @@ OUTER_LOOP:
 				return
 			case <-bpr.Quit():
 				return
-			case <-bpr.redoCh:
-				bpr.reset()
-				continue OUTER_LOOP
+			case peerID := <-bpr.redoCh:
+				if peerID == bpr.peerID {
+					bpr.reset()
+					continue OUTER_LOOP
+				} else {
+					continue WAIT_LOOP
+				}
 			case <-bpr.gotBlockCh:
 				// We got a block!
 				// Continue the for-loop and wait til Quit.

blockchain/pool_test.go

@@ -16,16 +16,52 @@ func init() {
 }
 
 type testPeer struct {
-	id     p2p.ID
-	height int64
+	id        p2p.ID
+	height    int64
+	inputChan chan inputData //make sure each peer's data is sequential
 }
 
-func makePeers(numPeers int, minHeight, maxHeight int64) map[p2p.ID]testPeer {
-	peers := make(map[p2p.ID]testPeer, numPeers)
+type inputData struct {
+	t       *testing.T
+	pool    *BlockPool
+	request BlockRequest
+}
+
+func (p testPeer) runInputRoutine() {
+	go func() {
+		for input := range p.inputChan {
+			p.simulateInput(input)
+		}
+	}()
+}
+
+// Request desired, pretend like we got the block immediately.
+func (p testPeer) simulateInput(input inputData) {
+	block := &types.Block{Header: types.Header{Height: input.request.Height}}
+	input.pool.AddBlock(input.request.PeerID, block, 123)
+	input.t.Logf("Added block from peer %v (height: %v)", input.request.PeerID, input.request.Height)
+}
+
+type testPeers map[p2p.ID]testPeer
+
+func (ps testPeers) start() {
+	for _, v := range ps {
+		v.runInputRoutine()
+	}
+}
+
+func (ps testPeers) stop() {
+	for _, v := range ps {
+		close(v.inputChan)
+	}
+}
+
+func makePeers(numPeers int, minHeight, maxHeight int64) testPeers {
+	peers := make(testPeers, numPeers)
 	for i := 0; i < numPeers; i++ {
 		peerID := p2p.ID(cmn.RandStr(12))
 		height := minHeight + cmn.RandInt63n(maxHeight-minHeight)
-		peers[peerID] = testPeer{peerID, height}
+		peers[peerID] = testPeer{peerID, height, make(chan inputData, 10)}
 	}
 	return peers
 }
@@ -45,6 +81,9 @@ func TestBasic(t *testing.T) {
 
 	defer pool.Stop()
 
+	peers.start()
+	defer peers.stop()
+
 	// Introduce each peer.
 	go func() {
 		for _, peer := range peers {
@@ -77,12 +116,8 @@ func TestBasic(t *testing.T) {
 			if request.Height == 300 {
 				return // Done!
 			}
-			// Request desired, pretend like we got the block immediately.
-			go func() {
-				block := &types.Block{Header: types.Header{Height: request.Height}}
-				pool.AddBlock(request.PeerID, block, 123)
-				t.Logf("Added block from peer %v (height: %v)", request.PeerID, request.Height)
-			}()
+
+			peers[request.PeerID].inputChan <- inputData{t, pool, request}
 		}
 	}
 }

blockchain/reactor.go

@@ -264,8 +264,12 @@ FOR_LOOP:
 				bcR.Logger.Info("Time to switch to consensus reactor!", "height", height)
 				bcR.pool.Stop()
 
-				conR := bcR.Switch.Reactor("CONSENSUS").(consensusReactor)
-				conR.SwitchToConsensus(state, blocksSynced)
+				conR, ok := bcR.Switch.Reactor("CONSENSUS").(consensusReactor)
+				if ok {
+					conR.SwitchToConsensus(state, blocksSynced)
+				} else {
+					// should only happen during testing
+				}
 
 				break FOR_LOOP
 			}
@@ -314,6 +318,13 @@ FOR_LOOP:
 					// still need to clean up the rest.
 					bcR.Switch.StopPeerForError(peer, fmt.Errorf("BlockchainReactor validation error: %v", err))
 				}
+				peerID2 := bcR.pool.RedoRequest(second.Height)
+				peer2 := bcR.Switch.Peers().Get(peerID2)
+				if peer2 != nil && peer2 != peer {
+					// NOTE: we've already removed the peer's request, but we
+					// still need to clean up the rest.
+					bcR.Switch.StopPeerForError(peer2, fmt.Errorf("BlockchainReactor validation error: %v", err))
+				}
 				continue FOR_LOOP
 			} else {
 				bcR.pool.PopRequest()

blockchain/reactor_test.go

@@ -1,72 +1,151 @@
 package blockchain
 
 import (
-	"net"
+	"sort"
 	"testing"
+	"time"
 
+	"github.com/stretchr/testify/assert"
+
+	abci "github.com/tendermint/tendermint/abci/types"
+	cfg "github.com/tendermint/tendermint/config"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/libs/log"
-
-	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/proxy"
 	sm "github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/types"
+	tmtime "github.com/tendermint/tendermint/types/time"
 )
 
-func makeStateAndBlockStore(logger log.Logger) (sm.State, *BlockStore) {
-	config := cfg.ResetTestRoot("blockchain_reactor_test")
-	// blockDB := dbm.NewDebugDB("blockDB", dbm.NewMemDB())
-	// stateDB := dbm.NewDebugDB("stateDB", dbm.NewMemDB())
+var config *cfg.Config
+
+func randGenesisDoc(numValidators int, randPower bool, minPower int64) (*types.GenesisDoc, []types.PrivValidator) {
+	validators := make([]types.GenesisValidator, numValidators)
+	privValidators := make([]types.PrivValidator, numValidators)
+	for i := 0; i < numValidators; i++ {
+		val, privVal := types.RandValidator(randPower, minPower)
+		validators[i] = types.GenesisValidator{
+			PubKey: val.PubKey,
+			Power:  val.VotingPower,
+		}
+		privValidators[i] = privVal
+	}
+	sort.Sort(types.PrivValidatorsByAddress(privValidators))
+
+	return &types.GenesisDoc{
+		GenesisTime: tmtime.Now(),
+		ChainID:     config.ChainID(),
+		Validators:  validators,
+	}, privValidators
+}
+
+func makeVote(header *types.Header, blockID types.BlockID, valset *types.ValidatorSet, privVal types.PrivValidator) *types.Vote {
+	addr := privVal.GetAddress()
+	idx, _ := valset.GetByAddress(addr)
+	vote := &types.Vote{
+		ValidatorAddress: addr,
+		ValidatorIndex:   idx,
+		Height:           header.Height,
+		Round:            1,
+		Timestamp:        tmtime.Now(),
+		Type:             types.PrecommitType,
+		BlockID:          blockID,
+	}
+
+	privVal.SignVote(header.ChainID, vote)
+
+	return vote
+}
+
+type BlockchainReactorPair struct {
+	reactor *BlockchainReactor
+	app     proxy.AppConns
+}
+
+func newBlockchainReactor(logger log.Logger, genDoc *types.GenesisDoc, privVals []types.PrivValidator, maxBlockHeight int64) BlockchainReactorPair {
+	if len(privVals) != 1 {
+		panic("only support one validator")
+	}
+
+	app := &testApp{}
+	cc := proxy.NewLocalClientCreator(app)
+	proxyApp := proxy.NewAppConns(cc)
+	err := proxyApp.Start()
+	if err != nil {
+		panic(cmn.ErrorWrap(err, "error start app"))
+	}
+
 	blockDB := dbm.NewMemDB()
 	stateDB := dbm.NewMemDB()
 	blockStore := NewBlockStore(blockDB)
-	state, err := sm.LoadStateFromDBOrGenesisFile(stateDB, config.GenesisFile())
+
+	state, err := sm.LoadStateFromDBOrGenesisDoc(stateDB, genDoc)
 	if err != nil {
 		panic(cmn.ErrorWrap(err, "error constructing state from genesis file"))
 	}
-	return state, blockStore
-}
 
-func newBlockchainReactor(logger log.Logger, maxBlockHeight int64) *BlockchainReactor {
-	state, blockStore := makeStateAndBlockStore(logger)
-
-	// Make the blockchainReactor itself
+	// Make the BlockchainReactor itself.
+	// NOTE we have to create and commit the blocks first because
+	// pool.height is determined from the store.
 	fastSync := true
-	var nilApp proxy.AppConnConsensus
-	blockExec := sm.NewBlockExecutor(dbm.NewMemDB(), log.TestingLogger(), nilApp,
+	blockExec := sm.NewBlockExecutor(dbm.NewMemDB(), log.TestingLogger(), proxyApp.Consensus(),
 		sm.MockMempool{}, sm.MockEvidencePool{})
 
+	// let's add some blocks in
+	for blockHeight := int64(1); blockHeight <= maxBlockHeight; blockHeight++ {
+		lastCommit := &types.Commit{}
+		if blockHeight > 1 {
+			lastBlockMeta := blockStore.LoadBlockMeta(blockHeight - 1)
+			lastBlock := blockStore.LoadBlock(blockHeight - 1)
+
+			vote := makeVote(&lastBlock.Header, lastBlockMeta.BlockID, state.Validators, privVals[0])
+			lastCommit = &types.Commit{Precommits: []*types.Vote{vote}, BlockID: lastBlockMeta.BlockID}
+		}
+
+		thisBlock := makeBlock(blockHeight, state, lastCommit)
+
+		thisParts := thisBlock.MakePartSet(types.BlockPartSizeBytes)
+		blockID := types.BlockID{thisBlock.Hash(), thisParts.Header()}
+
+		state, err = blockExec.ApplyBlock(state, blockID, thisBlock)
+		if err != nil {
+			panic(cmn.ErrorWrap(err, "error apply block"))
+		}
+
+		blockStore.SaveBlock(thisBlock, thisParts, lastCommit)
+	}
+
 	bcReactor := NewBlockchainReactor(state.Copy(), blockExec, blockStore, fastSync)
 	bcReactor.SetLogger(logger.With("module", "blockchain"))
 
-	// Next: we need to set a switch in order for peers to be added in
-	bcReactor.Switch = p2p.NewSwitch(cfg.DefaultP2PConfig(), nil)
-
-	// Lastly: let's add some blocks in
-	for blockHeight := int64(1); blockHeight <= maxBlockHeight; blockHeight++ {
-		firstBlock := makeBlock(blockHeight, state)
-		secondBlock := makeBlock(blockHeight+1, state)
-		firstParts := firstBlock.MakePartSet(types.BlockPartSizeBytes)
-		blockStore.SaveBlock(firstBlock, firstParts, secondBlock.LastCommit)
-	}
-
-	return bcReactor
+	return BlockchainReactorPair{bcReactor, proxyApp}
 }
 
 func TestNoBlockResponse(t *testing.T) {
-	maxBlockHeight := int64(20)
+	config = cfg.ResetTestRoot("blockchain_reactor_test")
+	genDoc, privVals := randGenesisDoc(1, false, 30)
 
-	bcr := newBlockchainReactor(log.TestingLogger(), maxBlockHeight)
-	bcr.Start()
-	defer bcr.Stop()
+	maxBlockHeight := int64(65)
 
-	// Add some peers in
-	peer := newbcrTestPeer(p2p.ID(cmn.RandStr(12)))
-	bcr.AddPeer(peer)
+	reactorPairs := make([]BlockchainReactorPair, 2)
 
-	chID := byte(0x01)
+	reactorPairs[0] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, maxBlockHeight)
+	reactorPairs[1] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, 0)
+
+	p2p.MakeConnectedSwitches(config.P2P, 2, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[i].reactor)
+		return s
+
+	}, p2p.Connect2Switches)
+
+	defer func() {
+		for _, r := range reactorPairs {
+			r.reactor.Stop()
+			r.app.Stop()
+		}
+	}()
 
 	tests := []struct {
 		height   int64
@@ -78,72 +157,100 @@ func TestNoBlockResponse(t *testing.T) {
 		{100, false},
 	}
 
-	// receive a request message from peer,
-	// wait for our response to be received on the peer
-	for _, tt := range tests {
-		reqBlockMsg := &bcBlockRequestMessage{tt.height}
-		reqBlockBytes := cdc.MustMarshalBinaryBare(reqBlockMsg)
-		bcr.Receive(chID, peer, reqBlockBytes)
-		msg := peer.lastBlockchainMessage()
+	for {
+		if reactorPairs[1].reactor.pool.IsCaughtUp() {
+			break
+		}
 
+		time.Sleep(10 * time.Millisecond)
+	}
+
+	assert.Equal(t, maxBlockHeight, reactorPairs[0].reactor.store.Height())
+
+	for _, tt := range tests {
+		block := reactorPairs[1].reactor.store.LoadBlock(tt.height)
 		if tt.existent {
-			if blockMsg, ok := msg.(*bcBlockResponseMessage); !ok {
-				t.Fatalf("Expected to receive a block response for height %d", tt.height)
-			} else if blockMsg.Block.Height != tt.height {
-				t.Fatalf("Expected response to be for height %d, got %d", tt.height, blockMsg.Block.Height)
-			}
+			assert.True(t, block != nil)
 		} else {
-			if noBlockMsg, ok := msg.(*bcNoBlockResponseMessage); !ok {
-				t.Fatalf("Expected to receive a no block response for height %d", tt.height)
-			} else if noBlockMsg.Height != tt.height {
-				t.Fatalf("Expected response to be for height %d, got %d", tt.height, noBlockMsg.Height)
-			}
+			assert.True(t, block == nil)
 		}
 	}
 }
 
-/*
 // NOTE: This is too hard to test without
 // an easy way to add test peer to switch
 // or without significant refactoring of the module.
 // Alternatively we could actually dial a TCP conn but
 // that seems extreme.
 func TestBadBlockStopsPeer(t *testing.T) {
-	maxBlockHeight := int64(20)
+	config = cfg.ResetTestRoot("blockchain_reactor_test")
+	genDoc, privVals := randGenesisDoc(1, false, 30)
 
-	bcr := newBlockchainReactor(log.TestingLogger(), maxBlockHeight)
-	bcr.Start()
-	defer bcr.Stop()
+	maxBlockHeight := int64(148)
 
-	// Add some peers in
-	peer := newbcrTestPeer(p2p.ID(cmn.RandStr(12)))
+	otherChain := newBlockchainReactor(log.TestingLogger(), genDoc, privVals, maxBlockHeight)
+	defer func() {
+		otherChain.reactor.Stop()
+		otherChain.app.Stop()
+	}()
 
-	// XXX: This doesn't add the peer to anything,
-	// so it's hard to check that it's later removed
-	bcr.AddPeer(peer)
-	assert.True(t, bcr.Switch.Peers().Size() > 0)
+	reactorPairs := make([]BlockchainReactorPair, 4)
 
-	// send a bad block from the peer
-	// default blocks already dont have commits, so should fail
-	block := bcr.store.LoadBlock(3)
-	msg := &bcBlockResponseMessage{Block: block}
-	peer.Send(BlockchainChannel, struct{ BlockchainMessage }{msg})
+	reactorPairs[0] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, maxBlockHeight)
+	reactorPairs[1] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs[2] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs[3] = newBlockchainReactor(log.TestingLogger(), genDoc, privVals, 0)
 
-	ticker := time.NewTicker(time.Millisecond * 10)
-	timer := time.NewTimer(time.Second * 2)
-LOOP:
-	for {
-		select {
-		case <-ticker.C:
-			if bcr.Switch.Peers().Size() == 0 {
-				break LOOP
-			}
-		case <-timer.C:
-			t.Fatal("Timed out waiting to disconnect peer")
+	switches := p2p.MakeConnectedSwitches(config.P2P, 4, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[i].reactor)
+		return s
+
+	}, p2p.Connect2Switches)
+
+	defer func() {
+		for _, r := range reactorPairs {
+			r.reactor.Stop()
+			r.app.Stop()
 		}
+	}()
+
+	for {
+		if reactorPairs[3].reactor.pool.IsCaughtUp() {
+			break
+		}
+
+		time.Sleep(1 * time.Second)
 	}
+
+	//at this time, reactors[0-3] is the newest
+	assert.Equal(t, 3, reactorPairs[1].reactor.Switch.Peers().Size())
+
+	//mark reactorPairs[3] is an invalid peer
+	reactorPairs[3].reactor.store = otherChain.reactor.store
+
+	lastReactorPair := newBlockchainReactor(log.TestingLogger(), genDoc, privVals, 0)
+	reactorPairs = append(reactorPairs, lastReactorPair)
+
+	switches = append(switches, p2p.MakeConnectedSwitches(config.P2P, 1, func(i int, s *p2p.Switch) *p2p.Switch {
+		s.AddReactor("BLOCKCHAIN", reactorPairs[len(reactorPairs)-1].reactor)
+		return s
+
+	}, p2p.Connect2Switches)...)
+
+	for i := 0; i < len(reactorPairs)-1; i++ {
+		p2p.Connect2Switches(switches, i, len(reactorPairs)-1)
+	}
+
+	for {
+		if lastReactorPair.reactor.pool.IsCaughtUp() || lastReactorPair.reactor.Switch.Peers().Size() == 0 {
+			break
+		}
+
+		time.Sleep(1 * time.Second)
+	}
+
+	assert.True(t, lastReactorPair.reactor.Switch.Peers().Size() < len(reactorPairs)-1)
 }
-*/
 
 //----------------------------------------------
 // utility funcs
@@ -155,56 +262,41 @@ func makeTxs(height int64) (txs []types.Tx) {
 	return txs
 }
 
-func makeBlock(height int64, state sm.State) *types.Block {
-	block, _ := state.MakeBlock(height, makeTxs(height), new(types.Commit), nil, state.Validators.GetProposer().Address)
+func makeBlock(height int64, state sm.State, lastCommit *types.Commit) *types.Block {
+	block, _ := state.MakeBlock(height, makeTxs(height), lastCommit, nil, state.Validators.GetProposer().Address)
 	return block
 }
 
-// The Test peer
-type bcrTestPeer struct {
-	cmn.BaseService
-	id p2p.ID
-	ch chan interface{}
+type testApp struct {
+	abci.BaseApplication
 }
 
-var _ p2p.Peer = (*bcrTestPeer)(nil)
+var _ abci.Application = (*testApp)(nil)
 
-func newbcrTestPeer(id p2p.ID) *bcrTestPeer {
-	bcr := &bcrTestPeer{
-		id: id,
-		ch: make(chan interface{}, 2),
-	}
-	bcr.BaseService = *cmn.NewBaseService(nil, "bcrTestPeer", bcr)
-	return bcr
+func (app *testApp) Info(req abci.RequestInfo) (resInfo abci.ResponseInfo) {
+	return abci.ResponseInfo{}
 }
 
-func (tp *bcrTestPeer) lastBlockchainMessage() interface{} { return <-tp.ch }
-
-func (tp *bcrTestPeer) TrySend(chID byte, msgBytes []byte) bool {
-	var msg BlockchainMessage
-	err := cdc.UnmarshalBinaryBare(msgBytes, &msg)
-	if err != nil {
-		panic(cmn.ErrorWrap(err, "Error while trying to parse a BlockchainMessage"))
-	}
-	if _, ok := msg.(*bcStatusResponseMessage); ok {
-		// Discard status response messages since they skew our results
-		// We only want to deal with:
-		// + bcBlockResponseMessage
-		// + bcNoBlockResponseMessage
-	} else {
-		tp.ch <- msg
-	}
-	return true
+func (app *testApp) BeginBlock(req abci.RequestBeginBlock) abci.ResponseBeginBlock {
+	return abci.ResponseBeginBlock{}
 }
 
-func (tp *bcrTestPeer) FlushStop()                           {}
-func (tp *bcrTestPeer) Send(chID byte, msgBytes []byte) bool { return tp.TrySend(chID, msgBytes) }
-func (tp *bcrTestPeer) NodeInfo() p2p.NodeInfo               { return p2p.DefaultNodeInfo{} }
-func (tp *bcrTestPeer) Status() p2p.ConnectionStatus         { return p2p.ConnectionStatus{} }
-func (tp *bcrTestPeer) ID() p2p.ID                           { return tp.id }
-func (tp *bcrTestPeer) IsOutbound() bool                     { return false }
-func (tp *bcrTestPeer) IsPersistent() bool                   { return true }
-func (tp *bcrTestPeer) Get(s string) interface{}             { return s }
-func (tp *bcrTestPeer) Set(string, interface{})              {}
-func (tp *bcrTestPeer) RemoteIP() net.IP                     { return []byte{127, 0, 0, 1} }
-func (tp *bcrTestPeer) OriginalAddr() *p2p.NetAddress        { return nil }
+func (app *testApp) EndBlock(req abci.RequestEndBlock) abci.ResponseEndBlock {
+	return abci.ResponseEndBlock{}
+}
+
+func (app *testApp) DeliverTx(tx []byte) abci.ResponseDeliverTx {
+	return abci.ResponseDeliverTx{Tags: []cmn.KVPair{}}
+}
+
+func (app *testApp) CheckTx(tx []byte) abci.ResponseCheckTx {
+	return abci.ResponseCheckTx{}
+}
+
+func (app *testApp) Commit() abci.ResponseCommit {
+	return abci.ResponseCommit{}
+}
+
+func (app *testApp) Query(reqQuery abci.RequestQuery) (resQuery abci.ResponseQuery) {
+	return
+}

blockchain/store_test.go

@@ -9,13 +9,30 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	cfg "github.com/tendermint/tendermint/config"
+	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/db"
+	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/libs/log"
+	sm "github.com/tendermint/tendermint/state"
 
 	"github.com/tendermint/tendermint/types"
 	tmtime "github.com/tendermint/tendermint/types/time"
 )
 
+func makeStateAndBlockStore(logger log.Logger) (sm.State, *BlockStore) {
+	config := cfg.ResetTestRoot("blockchain_reactor_test")
+	// blockDB := dbm.NewDebugDB("blockDB", dbm.NewMemDB())
+	// stateDB := dbm.NewDebugDB("stateDB", dbm.NewMemDB())
+	blockDB := dbm.NewMemDB()
+	stateDB := dbm.NewMemDB()
+	state, err := sm.LoadStateFromDBOrGenesisFile(stateDB, config.GenesisFile())
+	if err != nil {
+		panic(cmn.ErrorWrap(err, "error constructing state from genesis file"))
+	}
+	return state, NewBlockStore(blockDB)
+}
+
 func TestLoadBlockStoreStateJSON(t *testing.T) {
 	db := db.NewMemDB()
 
@@ -65,7 +82,7 @@ func freshBlockStore() (*BlockStore, db.DB) {
 var (
 	state, _ = makeStateAndBlockStore(log.NewTMLogger(new(bytes.Buffer)))
 
-	block       = makeBlock(1, state)
+	block       = makeBlock(1, state, new(types.Commit))
 	partSet     = block.MakePartSet(2)
 	part1       = partSet.GetPart(0)
 	part2       = partSet.GetPart(1)
@@ -88,7 +105,7 @@ func TestBlockStoreSaveLoadBlock(t *testing.T) {
 	}
 
 	// save a block
-	block := makeBlock(bs.Height()+1, state)
+	block := makeBlock(bs.Height()+1, state, new(types.Commit))
 	validPartSet := block.MakePartSet(2)
 	seenCommit := &types.Commit{Precommits: []*types.Vote{{Height: 10,
 		Timestamp: tmtime.Now()}}}
@@ -331,7 +348,7 @@ func TestLoadBlockMeta(t *testing.T) {
 func TestBlockFetchAtHeight(t *testing.T) {
 	state, bs := makeStateAndBlockStore(log.NewTMLogger(new(bytes.Buffer)))
 	require.Equal(t, bs.Height(), int64(0), "initially the height should be zero")
-	block := makeBlock(bs.Height()+1, state)
+	block := makeBlock(bs.Height()+1, state, new(types.Commit))
 
 	partSet := block.MakePartSet(2)
 	seenCommit := &types.Commit{Precommits: []*types.Vote{{Height: 10,

cmd/tendermint/commands/testnet.go

@@ -127,14 +127,31 @@ func testnetFiles(cmd *cobra.Command, args []string) error {
 		}
 	}
 
+	// Gather persistent peer addresses.
+	var (
+		persistentPeers string
+		err             error
+	)
 	if populatePersistentPeers {
-		err := populatePersistentPeersInConfigAndWriteIt(config)
+		persistentPeers, err = persistentPeersString(config)
 		if err != nil {
 			_ = os.RemoveAll(outputDir)
 			return err
 		}
 	}
 
+	// Overwrite default config.
+	for i := 0; i < nValidators+nNonValidators; i++ {
+		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
+		config.SetRoot(nodeDir)
+		config.P2P.AddrBookStrict = false
+		if populatePersistentPeers {
+			config.P2P.PersistentPeers = persistentPeers
+		}
+
+		cfg.WriteConfigFile(filepath.Join(nodeDir, "config", "config.toml"), config)
+	}
+
 	fmt.Printf("Successfully initialized %v node directories\n", nValidators+nNonValidators)
 	return nil
 }
@@ -157,28 +174,16 @@ func hostnameOrIP(i int) string {
 	return fmt.Sprintf("%s%d", hostnamePrefix, i)
 }
 
-func populatePersistentPeersInConfigAndWriteIt(config *cfg.Config) error {
+func persistentPeersString(config *cfg.Config) (string, error) {
 	persistentPeers := make([]string, nValidators+nNonValidators)
 	for i := 0; i < nValidators+nNonValidators; i++ {
 		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
 		config.SetRoot(nodeDir)
 		nodeKey, err := p2p.LoadNodeKey(config.NodeKeyFile())
 		if err != nil {
-			return err
+			return "", err
 		}
 		persistentPeers[i] = p2p.IDAddressString(nodeKey.ID(), fmt.Sprintf("%s:%d", hostnameOrIP(i), p2pPort))
 	}
-	persistentPeersList := strings.Join(persistentPeers, ",")
-
-	for i := 0; i < nValidators+nNonValidators; i++ {
-		nodeDir := filepath.Join(outputDir, fmt.Sprintf("%s%d", nodeDirPrefix, i))
-		config.SetRoot(nodeDir)
-		config.P2P.PersistentPeers = persistentPeersList
-		config.P2P.AddrBookStrict = false
-
-		// overwrite default config
-		cfg.WriteConfigFile(filepath.Join(nodeDir, "config", "config.toml"), config)
-	}
-
-	return nil
+	return strings.Join(persistentPeers, ","), nil
 }

config/config.go

@@ -283,7 +283,7 @@ type RPCConfig struct {
 
 	// Maximum number of simultaneous connections.
 	// Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
-	// If you want to accept more significant number than the default, make sure
+	// If you want to accept a larger number than the default, make sure
 	// you increase your OS limits.
 	// 0 - unlimited.
 	GRPCMaxOpenConnections int `mapstructure:"grpc_max_open_connections"`
@@ -293,7 +293,7 @@ type RPCConfig struct {
 
 	// Maximum number of simultaneous connections (including WebSocket).
 	// Does not include gRPC connections. See grpc_max_open_connections
-	// If you want to accept more significant number than the default, make sure
+	// If you want to accept a larger number than the default, make sure
 	// you increase your OS limits.
 	// 0 - unlimited.
 	// Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
@@ -774,12 +774,12 @@ type InstrumentationConfig struct {
 	PrometheusListenAddr string `mapstructure:"prometheus_listen_addr"`
 
 	// Maximum number of simultaneous connections.
-	// If you want to accept more significant number than the default, make sure
+	// If you want to accept a larger number than the default, make sure
 	// you increase your OS limits.
 	// 0 - unlimited.
 	MaxOpenConnections int `mapstructure:"max_open_connections"`
 
-	// Tendermint instrumentation namespace.
+	// Instrumentation namespace.
 	Namespace string `mapstructure:"namespace"`
 }
 

config/toml.go

@@ -125,13 +125,13 @@ laddr = "{{ .RPC.ListenAddress }}"
 # A list of origins a cross-domain request can be executed from
 # Default value '[]' disables cors support
 # Use '["*"]' to allow any origin
-cors_allowed_origins = "{{ .RPC.CORSAllowedOrigins }}"
+cors_allowed_origins = [{{ range .RPC.CORSAllowedOrigins }}{{ printf "%q, " . }}{{end}}]
 
 # A list of methods the client is allowed to use with cross-domain requests
-cors_allowed_methods = "{{ .RPC.CORSAllowedMethods }}"
+cors_allowed_methods = [{{ range .RPC.CORSAllowedMethods }}{{ printf "%q, " . }}{{end}}]
 
 # A list of non simple headers the client is allowed to use with cross-domain requests
-cors_allowed_headers = "{{ .RPC.CORSAllowedHeaders }}"
+cors_allowed_headers = [{{ range .RPC.CORSAllowedHeaders }}{{ printf "%q, " . }}{{end}}]
 
 # TCP or UNIX socket address for the gRPC server to listen on
 # NOTE: This server only supports /broadcast_tx_commit
@@ -139,7 +139,7 @@ grpc_laddr = "{{ .RPC.GRPCListenAddress }}"
 
 # Maximum number of simultaneous connections.
 # Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
-# If you want to accept more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
@@ -151,7 +151,7 @@ unsafe = {{ .RPC.Unsafe }}
 
 # Maximum number of simultaneous connections (including WebSocket).
 # Does not include gRPC connections. See grpc_max_open_connections
-# If you want to accept more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
@@ -260,14 +260,17 @@ create_empty_blocks_interval = "{{ .Consensus.CreateEmptyBlocksInterval }}"
 peer_gossip_sleep_duration = "{{ .Consensus.PeerGossipSleepDuration }}"
 peer_query_maj23_sleep_duration = "{{ .Consensus.PeerQueryMaj23SleepDuration }}"
 
+# Block time parameters. Corresponds to the minimum time increment between consecutive blocks.
+blocktime_iota = "{{ .Consensus.BlockTimeIota }}"
+
 ##### transactions indexer configuration options #####
 [tx_index]
 
 # What indexer to use for transactions
 #
 # Options:
-#   1) "null" (default)
-#   2) "kv" - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
+#   1) "null"
+#   2) "kv" (default) - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend).
 indexer = "{{ .TxIndex.Indexer }}"
 
 # Comma-separated list of tags to index (by default the only tag is "tx.hash")
@@ -299,7 +302,7 @@ prometheus = {{ .Instrumentation.Prometheus }}
 prometheus_listen_addr = "{{ .Instrumentation.PrometheusListenAddr }}"
 
 # Maximum number of simultaneous connections.
-# If you want to accept more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 max_open_connections = {{ .Instrumentation.MaxOpenConnections }}

consensus/common_test.go

@@ -425,20 +425,6 @@ func ensureNewRound(roundCh <-chan interface{}, height int64, round int) {
 	}
 }
 
-func ensureProposalHeartbeat(heartbeatCh <-chan interface{}) {
-	select {
-	case <-time.After(ensureTimeout):
-		panic("Timeout expired while waiting for ProposalHeartbeat event")
-	case ev := <-heartbeatCh:
-		heartbeat, ok := ev.(types.EventDataProposalHeartbeat)
-		if !ok {
-			panic(fmt.Sprintf("expected a *types.EventDataProposalHeartbeat, "+
-				"got %v. wrong subscription channel?",
-				reflect.TypeOf(heartbeat)))
-		}
-	}
-}
-
 func ensureNewTimeout(timeoutCh <-chan interface{}, height int64, round int, timeout int64) {
 	timeoutDuration := time.Duration(timeout*3) * time.Nanosecond
 	ensureNewEvent(timeoutCh, height, round, timeoutDuration,

consensus/mempool_test.go

@@ -72,18 +72,18 @@ func TestMempoolProgressInHigherRound(t *testing.T) {
 	startTestRound(cs, height, round)
 
 	ensureNewRound(newRoundCh, height, round) // first round at first height
-	ensureNewEventOnChannel(newBlockCh)           // first block gets committed
+	ensureNewEventOnChannel(newBlockCh)       // first block gets committed
 
 	height = height + 1 // moving to the next height
 	round = 0
 
 	ensureNewRound(newRoundCh, height, round) // first round at next height
-	deliverTxsRange(cs, 0, 1)                     // we deliver txs, but dont set a proposal so we get the next round
+	deliverTxsRange(cs, 0, 1)                 // we deliver txs, but dont set a proposal so we get the next round
 	ensureNewTimeout(timeoutCh, height, round, cs.config.TimeoutPropose.Nanoseconds())
 
-	round = round + 1                             // moving to the next round
+	round = round + 1                         // moving to the next round
 	ensureNewRound(newRoundCh, height, round) // wait for the next round
-	ensureNewEventOnChannel(newBlockCh)           // now we can commit the block
+	ensureNewEventOnChannel(newBlockCh)       // now we can commit the block
 }
 
 func deliverTxsRange(cs *ConsensusState, start, end int) {

consensus/reactor.go

@@ -8,7 +8,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	amino "github.com/tendermint/go-amino"
+	"github.com/tendermint/go-amino"
 	cstypes "github.com/tendermint/tendermint/consensus/types"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	tmevents "github.com/tendermint/tendermint/libs/events"
@@ -264,11 +264,6 @@ func (conR *ConsensusReactor) Receive(chID byte, src p2p.Peer, msgBytes []byte)
 				BlockID: msg.BlockID,
 				Votes:   ourVotes,
 			}))
-		case *ProposalHeartbeatMessage:
-			hb := msg.Heartbeat
-			conR.Logger.Debug("Received proposal heartbeat message",
-				"height", hb.Height, "round", hb.Round, "sequence", hb.Sequence,
-				"valIdx", hb.ValidatorIndex, "valAddr", hb.ValidatorAddress)
 		default:
 			conR.Logger.Error(fmt.Sprintf("Unknown message type %v", reflect.TypeOf(msg)))
 		}
@@ -369,8 +364,8 @@ func (conR *ConsensusReactor) FastSync() bool {
 
 //--------------------------------------
 
-// subscribeToBroadcastEvents subscribes for new round steps, votes and
-// proposal heartbeats using internal pubsub defined on state to broadcast
+// subscribeToBroadcastEvents subscribes for new round steps and votes
+// using internal pubsub defined on state to broadcast
 // them to peers upon receiving.
 func (conR *ConsensusReactor) subscribeToBroadcastEvents() {
 	const subscriber = "consensus-reactor"
@@ -389,10 +384,6 @@ func (conR *ConsensusReactor) subscribeToBroadcastEvents() {
 			conR.broadcastHasVoteMessage(data.(*types.Vote))
 		})
 
-	conR.conS.evsw.AddListenerForEvent(subscriber, types.EventProposalHeartbeat,
-		func(data tmevents.EventData) {
-			conR.broadcastProposalHeartbeatMessage(data.(*types.Heartbeat))
-		})
 }
 
 func (conR *ConsensusReactor) unsubscribeFromBroadcastEvents() {
@@ -400,13 +391,6 @@ func (conR *ConsensusReactor) unsubscribeFromBroadcastEvents() {
 	conR.conS.evsw.RemoveListener(subscriber)
 }
 
-func (conR *ConsensusReactor) broadcastProposalHeartbeatMessage(hb *types.Heartbeat) {
-	conR.Logger.Debug("Broadcasting proposal heartbeat message",
-		"height", hb.Height, "round", hb.Round, "sequence", hb.Sequence, "address", hb.ValidatorAddress)
-	msg := &ProposalHeartbeatMessage{hb}
-	conR.Switch.Broadcast(StateChannel, cdc.MustMarshalBinaryBare(msg))
-}
-
 func (conR *ConsensusReactor) broadcastNewRoundStepMessage(rs *cstypes.RoundState) {
 	nrsMsg := makeRoundStepMessage(rs)
 	conR.Switch.Broadcast(StateChannel, cdc.MustMarshalBinaryBare(nrsMsg))
@@ -1387,7 +1371,6 @@ func RegisterConsensusMessages(cdc *amino.Codec) {
 	cdc.RegisterConcrete(&HasVoteMessage{}, "tendermint/HasVote", nil)
 	cdc.RegisterConcrete(&VoteSetMaj23Message{}, "tendermint/VoteSetMaj23", nil)
 	cdc.RegisterConcrete(&VoteSetBitsMessage{}, "tendermint/VoteSetBits", nil)
-	cdc.RegisterConcrete(&ProposalHeartbeatMessage{}, "tendermint/ProposalHeartbeat", nil)
 }
 
 func decodeMsg(bz []byte) (msg ConsensusMessage, err error) {
@@ -1664,18 +1647,3 @@ func (m *VoteSetBitsMessage) String() string {
 }
 
 //-------------------------------------
-
-// ProposalHeartbeatMessage is sent to signal that a node is alive and waiting for transactions for a proposal.
-type ProposalHeartbeatMessage struct {
-	Heartbeat *types.Heartbeat
-}
-
-// ValidateBasic performs basic validation.
-func (m *ProposalHeartbeatMessage) ValidateBasic() error {
-	return m.Heartbeat.ValidateBasic()
-}
-
-// String returns a string representation.
-func (m *ProposalHeartbeatMessage) String() string {
-	return fmt.Sprintf("[HEARTBEAT %v]", m.Heartbeat)
-}

consensus/reactor_test.go

@@ -213,8 +213,8 @@ func (m *mockEvidencePool) Update(block *types.Block, state sm.State) {
 
 //------------------------------------
 
-// Ensure a testnet sends proposal heartbeats and makes blocks when there are txs
-func TestReactorProposalHeartbeats(t *testing.T) {
+// Ensure a testnet makes blocks when there are txs
+func TestReactorCreatesBlockWhenEmptyBlocksFalse(t *testing.T) {
 	N := 4
 	css := randConsensusNet(N, "consensus_reactor_test", newMockTickerFunc(true), newCounter,
 		func(c *cfg.Config) {
@@ -222,17 +222,6 @@ func TestReactorProposalHeartbeats(t *testing.T) {
 		})
 	reactors, eventChans, eventBuses := startConsensusNet(t, css, N)
 	defer stopConsensusNet(log.TestingLogger(), reactors, eventBuses)
-	heartbeatChans := make([]chan interface{}, N)
-	var err error
-	for i := 0; i < N; i++ {
-		heartbeatChans[i] = make(chan interface{}, 1)
-		err = eventBuses[i].Subscribe(context.Background(), testSubscriber, types.EventQueryProposalHeartbeat, heartbeatChans[i])
-		require.NoError(t, err)
-	}
-	// wait till everyone sends a proposal heartbeat
-	timeoutWaitGroup(t, N, func(j int) {
-		<-heartbeatChans[j]
-	}, css)
 
 	// send a tx
 	if err := css[3].mempool.CheckTx([]byte{1, 2, 3}, nil); err != nil {

consensus/replay.go

@@ -11,7 +11,6 @@ import (
 	"time"
 
 	abci "github.com/tendermint/tendermint/abci/types"
-	"github.com/tendermint/tendermint/version"
 	//auto "github.com/tendermint/tendermint/libs/autofile"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	dbm "github.com/tendermint/tendermint/libs/db"
@@ -20,6 +19,7 @@ import (
 	"github.com/tendermint/tendermint/proxy"
 	sm "github.com/tendermint/tendermint/state"
 	"github.com/tendermint/tendermint/types"
+	"github.com/tendermint/tendermint/version"
 )
 
 var crc32c = crc32.MakeTable(crc32.Castagnoli)
@@ -247,6 +247,7 @@ func (h *Handshaker) Handshake(proxyApp proxy.AppConns) error {
 
 	// Set AppVersion on the state.
 	h.initialState.Version.Consensus.App = version.Protocol(res.AppVersion)
+	sm.SaveState(h.stateDB, h.initialState)
 
 	// Replay blocks up to the latest in the blockstore.
 	_, err = h.ReplayBlocks(h.initialState, appHash, blockHeight, proxyApp)
@@ -276,7 +277,12 @@ func (h *Handshaker) ReplayBlocks(
 
 	// If appBlockHeight == 0 it means that we are at genesis and hence should send InitChain.
 	if appBlockHeight == 0 {
-		nextVals := types.TM2PB.ValidatorUpdates(state.NextValidators) // state.Validators would work too.
+		validators := make([]*types.Validator, len(h.genDoc.Validators))
+		for i, val := range h.genDoc.Validators {
+			validators[i] = types.NewValidator(val.PubKey, val.Power)
+		}
+		validatorSet := types.NewValidatorSet(validators)
+		nextVals := types.TM2PB.ValidatorUpdates(validatorSet)
 		csParams := types.TM2PB.ConsensusParams(h.genDoc.ConsensusParams)
 		req := abci.RequestInitChain{
 			Time:            h.genDoc.GenesisTime,
@@ -290,19 +296,27 @@ func (h *Handshaker) ReplayBlocks(
 			return nil, err
 		}
 
-		// If the app returned validators or consensus params, update the state.
-		if len(res.Validators) > 0 {
-			vals, err := types.PB2TM.ValidatorUpdates(res.Validators)
-			if err != nil {
-				return nil, err
+		if stateBlockHeight == 0 { //we only update state when we are in initial state
+			// If the app returned validators or consensus params, update the state.
+			if len(res.Validators) > 0 {
+				vals, err := types.PB2TM.ValidatorUpdates(res.Validators)
+				if err != nil {
+					return nil, err
+				}
+				state.Validators = types.NewValidatorSet(vals)
+				state.NextValidators = types.NewValidatorSet(vals)
+			} else {
+				// If validator set is not set in genesis and still empty after InitChain, exit.
+				if len(h.genDoc.Validators) == 0 {
+					return nil, fmt.Errorf("Validator set is nil in genesis and still empty after InitChain")
+				}
 			}
-			state.Validators = types.NewValidatorSet(vals)
-			state.NextValidators = types.NewValidatorSet(vals)
+
+			if res.ConsensusParams != nil {
+				state.ConsensusParams = types.PB2TM.ConsensusParams(res.ConsensusParams)
+			}
+			sm.SaveState(h.stateDB, state)
 		}
-		if res.ConsensusParams != nil {
-			state.ConsensusParams = types.PB2TM.ConsensusParams(res.ConsensusParams)
-		}
-		sm.SaveState(h.stateDB, state)
 	}
 
 	// First handle edge cases and constraints on the storeBlockHeight.

consensus/replay_test.go

@@ -17,7 +17,7 @@ import (
 
 	"github.com/tendermint/tendermint/abci/example/kvstore"
 	abci "github.com/tendermint/tendermint/abci/types"
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	auto "github.com/tendermint/tendermint/libs/autofile"
 	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/version"
@@ -315,28 +315,21 @@ func testHandshakeReplay(t *testing.T, nBlocks int, mode uint) {
 	config := ResetConfig("proxy_test_")
 
 	walBody, err := WALWithNBlocks(NUM_BLOCKS)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 	walFile := tempWALWithData(walBody)
 	config.Consensus.SetWalFile(walFile)
 
 	privVal := privval.LoadFilePV(config.PrivValidatorFile())
 
 	wal, err := NewWAL(walFile)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 	wal.SetLogger(log.TestingLogger())
-	if err := wal.Start(); err != nil {
-		t.Fatal(err)
-	}
+	err = wal.Start()
+	require.NoError(t, err)
 	defer wal.Stop()
 
 	chain, commits, err := makeBlockchainFromWAL(wal)
-	if err != nil {
-		t.Fatalf(err.Error())
-	}
+	require.NoError(t, err)
 
 	stateDB, state, store := stateAndStore(config, privVal.GetPubKey(), kvstore.ProtocolVersion)
 	store.chain = chain

consensus/state.go

@@ -22,13 +22,6 @@ import (
 	"github.com/tendermint/tendermint/types"
 )
 
-//-----------------------------------------------------------------------------
-// Config
-
-const (
-	proposalHeartbeatIntervalSeconds = 2
-)
-
 //-----------------------------------------------------------------------------
 // Errors
 
@@ -118,7 +111,7 @@ type ConsensusState struct {
 	done chan struct{}
 
 	// synchronous pubsub between consensus state and reactor.
-	// state only emits EventNewRoundStep, EventVote and EventProposalHeartbeat
+	// state only emits EventNewRoundStep and EventVote
 	evsw tmevents.EventSwitch
 
 	// for reporting metrics
@@ -324,10 +317,11 @@ func (cs *ConsensusState) startRoutines(maxSteps int) {
 	go cs.receiveRoutine(maxSteps)
 }
 
-// OnStop implements cmn.Service. It stops all routines and waits for the WAL to finish.
+// OnStop implements cmn.Service.
 func (cs *ConsensusState) OnStop() {
 	cs.evsw.Stop()
 	cs.timeoutTicker.Stop()
+	// WAL is stopped in receiveRoutine.
 }
 
 // Wait waits for the the main routine to return.
@@ -751,7 +745,7 @@ func (cs *ConsensusState) enterNewRound(height int64, round int) {
 	validators := cs.Validators
 	if cs.Round < round {
 		validators = validators.Copy()
-		validators.IncrementAccum(round - cs.Round)
+		validators.IncrementProposerPriority(round - cs.Round)
 	}
 
 	// Setup new round
@@ -784,7 +778,6 @@ func (cs *ConsensusState) enterNewRound(height int64, round int) {
 			cs.scheduleTimeout(cs.config.CreateEmptyBlocksInterval, height, round,
 				cstypes.RoundStepNewRound)
 		}
-		go cs.proposalHeartbeat(height, round)
 	} else {
 		cs.enterPropose(height, round)
 	}
@@ -801,38 +794,6 @@ func (cs *ConsensusState) needProofBlock(height int64) bool {
 	return !bytes.Equal(cs.state.AppHash, lastBlockMeta.Header.AppHash)
 }
 
-func (cs *ConsensusState) proposalHeartbeat(height int64, round int) {
-	logger := cs.Logger.With("height", height, "round", round)
-	addr := cs.privValidator.GetAddress()
-
-	if !cs.Validators.HasAddress(addr) {
-		logger.Debug("Not sending proposalHearbeat. This node is not a validator", "addr", addr, "vals", cs.Validators)
-		return
-	}
-	counter := 0
-	valIndex, _ := cs.Validators.GetByAddress(addr)
-	chainID := cs.state.ChainID
-	for {
-		rs := cs.GetRoundState()
-		// if we've already moved on, no need to send more heartbeats
-		if rs.Step > cstypes.RoundStepNewRound || rs.Round > round || rs.Height > height {
-			return
-		}
-		heartbeat := &types.Heartbeat{
-			Height:           rs.Height,
-			Round:            rs.Round,
-			Sequence:         counter,
-			ValidatorAddress: addr,
-			ValidatorIndex:   valIndex,
-		}
-		cs.privValidator.SignHeartbeat(chainID, heartbeat)
-		cs.eventBus.PublishEventProposalHeartbeat(types.EventDataProposalHeartbeat{heartbeat})
-		cs.evsw.FireEvent(types.EventProposalHeartbeat, heartbeat)
-		counter++
-		time.Sleep(proposalHeartbeatIntervalSeconds * time.Second)
-	}
-}
-
 // Enter (CreateEmptyBlocks): from enterNewRound(height,round)
 // Enter (CreateEmptyBlocks, CreateEmptyBlocksInterval > 0 ): after enterNewRound(height,round), after timeout of CreateEmptyBlocksInterval
 // Enter (!CreateEmptyBlocks) : after enterNewRound(height,round), once txs are in the mempool

consensus/state_test.go

@@ -11,8 +11,6 @@ import (
 	"github.com/stretchr/testify/require"
 
 	cstypes "github.com/tendermint/tendermint/consensus/types"
-	tmevents "github.com/tendermint/tendermint/libs/events"
-
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/log"
 	tmpubsub "github.com/tendermint/tendermint/libs/pubsub"
@@ -1029,33 +1027,6 @@ func TestSetValidBlockOnDelayedPrevote(t *testing.T) {
 	assert.True(t, rs.ValidRound == round)
 }
 
-// regression for #2518
-func TestNoHearbeatWhenNotValidator(t *testing.T) {
-	cs, _ := randConsensusState(4)
-	cs.Validators = types.NewValidatorSet(nil) // make sure we are not in the validator set
-
-	cs.evsw.AddListenerForEvent("testing", types.EventProposalHeartbeat,
-		func(data tmevents.EventData) {
-			t.Errorf("Should not have broadcasted heartbeat")
-		})
-	go cs.proposalHeartbeat(10, 1)
-
-	cs.Stop()
-
-	// if a faulty implementation sends an event, we should wait here a little bit to make sure we don't miss it by prematurely leaving the test method
-	time.Sleep((proposalHeartbeatIntervalSeconds  + 1) * time.Second)
-}
-
-// regression for #2518
-func TestHearbeatWhenWeAreValidator(t *testing.T) {
-	cs, _ := randConsensusState(4)
-	heartbeatCh := subscribe(cs.eventBus, types.EventQueryProposalHeartbeat)
-
-	go cs.proposalHeartbeat(10, 1)
-	ensureProposalHeartbeat(heartbeatCh)
-
-}
-
 // What we want:
 // P0 miss to lock B as Proposal Block is missing, but set valid block to B after
 // receiving delayed Block Proposal.

consensus/types/peer_round_state.go

@@ -55,3 +55,31 @@ func (prs PeerRoundState) StringIndented(indent string) string {
 		indent, prs.CatchupCommit, prs.CatchupCommitRound,
 		indent)
 }
+
+//-----------------------------------------------------------
+// These methods are for Protobuf Compatibility
+
+// Size returns the size of the amino encoding, in bytes.
+func (ps *PeerRoundState) Size() int {
+	bs, _ := ps.Marshal()
+	return len(bs)
+}
+
+// Marshal returns the amino encoding.
+func (ps *PeerRoundState) Marshal() ([]byte, error) {
+	return cdc.MarshalBinaryBare(ps)
+}
+
+// MarshalTo calls Marshal and copies to the given buffer.
+func (ps *PeerRoundState) MarshalTo(data []byte) (int, error) {
+	bs, err := ps.Marshal()
+	if err != nil {
+		return -1, err
+	}
+	return copy(data, bs), nil
+}
+
+// Unmarshal deserializes from amino encoded form.
+func (ps *PeerRoundState) Unmarshal(bs []byte) error {
+	return cdc.UnmarshalBinaryBare(bs, ps)
+}

consensus/types/round_state.go

@@ -201,3 +201,31 @@ func (rs *RoundState) StringShort() string {
 	return fmt.Sprintf(`RoundState{H:%v R:%v S:%v ST:%v}`,
 		rs.Height, rs.Round, rs.Step, rs.StartTime)
 }
+
+//-----------------------------------------------------------
+// These methods are for Protobuf Compatibility
+
+// Size returns the size of the amino encoding, in bytes.
+func (rs *RoundStateSimple) Size() int {
+	bs, _ := rs.Marshal()
+	return len(bs)
+}
+
+// Marshal returns the amino encoding.
+func (rs *RoundStateSimple) Marshal() ([]byte, error) {
+	return cdc.MarshalBinaryBare(rs)
+}
+
+// MarshalTo calls Marshal and copies to the given buffer.
+func (rs *RoundStateSimple) MarshalTo(data []byte) (int, error) {
+	bs, err := rs.Marshal()
+	if err != nil {
+		return -1, err
+	}
+	return copy(data, bs), nil
+}
+
+// Unmarshal deserializes from amino encoded form.
+func (rs *RoundStateSimple) Unmarshal(bs []byte) error {
+	return cdc.UnmarshalBinaryBare(bs, rs)
+}

consensus/wal_test.go

@@ -7,13 +7,13 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-
 	// "sync"
 	"testing"
 	"time"
 
 	"github.com/tendermint/tendermint/consensus/types"
 	"github.com/tendermint/tendermint/libs/autofile"
+	"github.com/tendermint/tendermint/libs/log"
 	tmtypes "github.com/tendermint/tendermint/types"
 	tmtime "github.com/tendermint/tendermint/types/time"
 
@@ -23,29 +23,27 @@ import (
 
 func TestWALTruncate(t *testing.T) {
 	walDir, err := ioutil.TempDir("", "wal")
-	if err != nil {
-		panic(fmt.Errorf("failed to create temp WAL file: %v", err))
-	}
+	require.NoError(t, err)
 	defer os.RemoveAll(walDir)
 
 	walFile := filepath.Join(walDir, "wal")
 
 	//this magic number 4K can truncate the content when RotateFile. defaultHeadSizeLimit(10M) is hard to simulate.
 	//this magic number 1 * time.Millisecond make RotateFile check frequently. defaultGroupCheckDuration(5s) is hard to simulate.
-	wal, err := NewWAL(walFile, autofile.GroupHeadSizeLimit(4096), autofile.GroupCheckDuration(1*time.Millisecond))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	wal.Start()
+	wal, err := NewWAL(walFile,
+		autofile.GroupHeadSizeLimit(4096),
+		autofile.GroupCheckDuration(1*time.Millisecond),
+	)
+	require.NoError(t, err)
+	wal.SetLogger(log.TestingLogger())
+	err = wal.Start()
+	require.NoError(t, err)
 	defer wal.Stop()
 
 	//60 block's size nearly 70K, greater than group's headBuf size(4096 * 10), when headBuf is full, truncate content will Flush to the file.
 	//at this time, RotateFile is called, truncate content exist in each file.
 	err = WALGenerateNBlocks(wal.Group(), 60)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
 
 	time.Sleep(1 * time.Millisecond) //wait groupCheckDuration, make sure RotateFile run
 
@@ -99,9 +97,8 @@ func TestWALSearchForEndHeight(t *testing.T) {
 	walFile := tempWALWithData(walBody)
 
 	wal, err := NewWAL(walFile)
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err)
+	wal.SetLogger(log.TestingLogger())
 
 	h := int64(3)
 	gr, found, err := wal.SearchForEndHeight(h, &WALSearchOptions{})

docs/.vuepress/config.js

@@ -8,7 +8,17 @@ module.exports = {
     lineNumbers: true
   },
   themeConfig: {
-    lastUpdated: "Last Updated",
+    repo: "tendermint/tendermint",
+    editLinks: true,
+    docsDir: "docs",
+    docsBranch: "develop",
+    editLinkText: 'Edit this page on Github',
+    lastUpdated: true,
+    algolia: {
+      apiKey: '59f0e2deb984aa9cdf2b3a5fd24ac501',
+      indexName: 'tendermint',
+      debug: false
+    },
     nav: [{ text: "Back to Tendermint", link: "https://tendermint.com" }],
     sidebar: [
       {

docs/DOCS_README.md

@@ -12,10 +12,10 @@ respectively.
 
 ## How It Works
 
-There is a Jenkins job listening for changes in the `/docs` directory, on both
+There is a CircleCI job listening for changes in the `/docs` directory, on both
 the  `master` and `develop` branches. Any updates to files in this directory
 on those branches will automatically trigger a website deployment. Under the hood,
-a private website repository has make targets consumed by a standard Jenkins task.
+the private website repository has a `make build-docs` target consumed by a CircleCI job in that repo.
 
 ## README
 
@@ -93,6 +93,10 @@ python -m SimpleHTTPServer 8080
 
 then navigate to localhost:8080 in your browser.
 
+## Search
+
+We are using [Algolia](https://www.algolia.com) to power full-text search. This uses a public API search-only key in the `config.js` as well as a [tendermint.json](https://github.com/algolia/docsearch-configs/blob/master/configs/tendermint.json) configuration file that we can update with PRs.
+
 ## Consistency
 
 Because the build processes are identical (as is the information contained herein), this file should be kept in sync as

docs/app-dev/abci-cli.md

@@ -11,13 +11,10 @@ Make sure you [have Go installed](https://golang.org/doc/install).
 Next, install the `abci-cli` tool and example applications:
 
 ```
-go get github.com/tendermint/tendermint
-```
-
-to get vendored dependencies:
-
-```
-cd $GOPATH/src/github.com/tendermint/tendermint
+mkdir -p $GOPATH/src/github.com/tendermint
+cd $GOPATH/src/github.com/tendermint
+git clone https://github.com/tendermint/tendermint.git
+cd tendermint
 make get_tools
 make get_vendor_deps
 make install_abci

docs/app-dev/app-architecture.md

@@ -5,7 +5,7 @@ Tendermint blockchain application.
 
 The following diagram provides a superb example:
 
-<https://drive.google.com/open?id=1yR2XpRi9YCY9H9uMfcw8-RMJpvDyvjz9>
+![](../imgs/cosmos-tendermint-stack-4k.jpg)
 
 The end-user application here is the Cosmos Voyager, at the bottom left.
 Voyager communicates with a REST API exposed by a local Light-Client

docs/app-dev/ecosystem.json

@@ -122,7 +122,7 @@
   ],
   "abciServers": [
     {
-      "name": "abci",
+      "name": "go-abci",
       "url": "https://github.com/tendermint/tendermint/tree/master/abci",
       "language": "Go",
       "author": "Tendermint"
@@ -133,6 +133,12 @@
       "language": "Javascript",
       "author": "Tendermint"
     },
+    {
+      "name": "rust-tsp",
+      "url": "https://github.com/tendermint/rust-tsp",
+      "language": "Rust",
+      "author": "Tendermint"
+    },
     {
       "name": "cpp-tmsp",
       "url": "https://github.com/mdyring/cpp-tmsp",
@@ -164,7 +170,7 @@
       "author": "Dave Bryson"
     },
     {
-      "name": "tm-abci",
+      "name": "tm-abci (fork of py-abci with async IO)",
       "url": "https://github.com/SoftblocksCo/tm-abci",
       "language": "Python",
       "author": "Softblocks"
@@ -175,5 +181,13 @@
       "language": "Javascript",
       "author": "Dennis McKinnon"
     }
+  ],
+  "aminoLibraries": [
+    {
+      "name": "JS-Amino",
+      "url": "https://github.com/TanNgocDo/Js-Amino",
+      "language": "Javascript",
+      "author": "TanNgocDo"
+    }
   ]
 }

docs/app-dev/ecosystem.md

@@ -1,11 +1,9 @@
 # Ecosystem
 
 The growing list of applications built using various pieces of the
-Tendermint stack can be found at:
+Tendermint stack can be found at the [ecosystem page](https://tendermint.com/ecosystem).
 
-- https://tendermint.com/ecosystem
-
-We thank the community for their contributions thus far and welcome the
+We thank the community for their contributions and welcome the
 addition of new projects. A pull request can be submitted to [this
 file](https://github.com/tendermint/tendermint/blob/master/docs/app-dev/ecosystem.json)
 to include your project.

docs/app-dev/getting-started.md

@@ -252,14 +252,12 @@ we'll run a Javascript version of the `counter`. To run it, you'll need
 to [install node](https://nodejs.org/en/download/).
 
 You'll also need to fetch the relevant repository, from
-[here](https://github.com/tendermint/js-abci) then install it. As go
-devs, we keep all our code under the `$GOPATH`, so run:
+[here](https://github.com/tendermint/js-abci), then install it:
 
 ```
-go get github.com/tendermint/js-abci &> /dev/null
-cd $GOPATH/src/github.com/tendermint/js-abci/example
-npm install
-cd ..
+git clone https://github.com/tendermint/js-abci.git
+cd js-abci
+npm install abci
 ```
 
 Kill the previous `counter` and `tendermint` processes. Now run the app:
@@ -276,13 +274,16 @@ tendermint node
 ```
 
 Once again, you should see blocks streaming by - but now, our
-application is written in javascript! Try sending some transactions, and
+application is written in Javascript! Try sending some transactions, and
 like before - the results should be the same:
 
 ```
-curl localhost:26657/broadcast_tx_commit?tx=0x00 # ok
-curl localhost:26657/broadcast_tx_commit?tx=0x05 # invalid nonce
-curl localhost:26657/broadcast_tx_commit?tx=0x01 # ok
+# ok
+curl localhost:26657/broadcast_tx_commit?tx=0x00
+# invalid nonce
+curl localhost:26657/broadcast_tx_commit?tx=0x05
+# ok
+curl localhost:26657/broadcast_tx_commit?tx=0x01
 ```
 
 Neat, eh?

docs/app-dev/subscribing-to-events-via-websocket.md

@@ -54,7 +54,7 @@ Response:
                     "value": "ww0z4WaZ0Xg+YI10w43wTWbBmM3dpVza4mmSQYsd0ck="
                   },
                   "voting_power": "10",
-                  "accum": "0"
+                  "proposer_priority": "0"
                 }
               ]
             }

docs/architecture/adr-008-priv-validator.md

@@ -5,14 +5,17 @@ implementations:
 
 - FilePV uses an unencrypted private key in a "priv_validator.json" file - no
   configuration required (just `tendermint init`).
-- SocketPV uses a socket to send signing requests to another process - user is
-  responsible for starting that process themselves.
+- TCPVal and IPCVal use TCP and Unix sockets respectively to send signing requests
+  to another process - the user is responsible for starting that process themselves.
 
-The SocketPV address can be provided via flags at the command line - doing so
-will cause Tendermint to ignore any "priv_validator.json" file and to listen on
-the given address for incoming connections from an external priv_validator
-process. It will halt any operation until at least one external process
-succesfully connected.
+Both TCPVal and IPCVal addresses can be provided via flags at the command line
+or in the configuration file; TCPVal addresses must be of the form
+`tcp://<ip_address>:<port>` and IPCVal addresses `unix:///path/to/file.sock` -
+doing so will cause Tendermint to ignore any private validator files.
+
+TCPVal will listen on the given address for incoming connections from an external
+private validator process. It will halt any operation until at least one external
+process successfully connected.
 
 The external priv_validator process will dial the address to connect to
 Tendermint, and then Tendermint will send requests on the ensuing connection to
@@ -21,6 +24,9 @@ but the Tendermint process makes all requests. In a later stage we're going to
 support multiple validators for fault tolerance. To prevent double signing they
 need to be synced, which is deferred to an external solution (see #1185).
 
+Conversely, IPCVal will make an outbound connection to an existing socket opened
+by the external validator process.
+
 In addition, Tendermint will provide implementations that can be run in that
 external process. These include:
 

docs/introduction/install.md

@@ -79,11 +79,9 @@ make install
 
 Install [LevelDB](https://github.com/google/leveldb) (minimum version is 1.7).
 
-Build Tendermint with C libraries: `make build_c`.
-
 ### Ubuntu
 
-Install LevelDB with snappy:
+Install LevelDB with snappy (optionally):
 
 ```
 sudo apt-get update
@@ -95,9 +93,9 @@ wget https://github.com/google/leveldb/archive/v1.20.tar.gz && \
   tar -zxvf v1.20.tar.gz && \
   cd leveldb-1.20/ && \
   make && \
-  cp -r out-static/lib* out-shared/lib* /usr/local/lib/ && \
+  sudo cp -r out-static/lib* out-shared/lib* /usr/local/lib/ && \
   cd include/ && \
-  cp -r leveldb /usr/local/include/ && \
+  sudo cp -r leveldb /usr/local/include/ && \
   sudo ldconfig && \
   rm -f v1.20.tar.gz
 ```
@@ -109,8 +107,16 @@ Set database backend to cleveldb:
 db_backend = "cleveldb"
 ```
 
-To build Tendermint, run
+To install Tendermint, run
 
 ```
-CGO_LDFLAGS="-lsnappy" go build -ldflags "-X github.com/tendermint/tendermint/version.GitCommit=`git rev-parse --short=8 HEAD`" -tags "tendermint gcc" -o build/tendermint ./cmd/tendermint/
+CGO_LDFLAGS="-lsnappy" make install_c
 ```
+
+or run
+
+```
+CGO_LDFLAGS="-lsnappy" make build_c
+```
+
+to put the binary in `./build`.

docs/introduction/quick-start.md

@@ -40,7 +40,11 @@ These files are found in `$HOME/.tendermint`:
 ```
 $ ls $HOME/.tendermint
 
-config.toml  data  genesis.json  priv_validator.json
+config  data
+
+$ ls $HOME/.tendermint/config/
+
+config.toml  genesis.json  node_key.json  priv_validator.json
 ```
 
 For a single, local node, no further configuration is required.
@@ -110,7 +114,18 @@ source ~/.profile
 
 This will install `go` and other dependencies, get the Tendermint source code, then compile the `tendermint` binary.
 
-Next, use the `tendermint testnet` command to create four directories of config files (found in `./mytestnet`) and copy each directory to the relevant machine in the cloud, so that each machine has `$HOME/mytestnet/node[0-3]` directory. Then from each machine, run:
+Next, use the `tendermint testnet` command to create four directories of config files (found in `./mytestnet`) and copy each directory to the relevant machine in the cloud, so that each machine has `$HOME/mytestnet/node[0-3]` directory.
+
+Before you can start the network, you'll need peers identifiers (IPs are not enough and can change). We'll refer to them as ID1, ID2, ID3, ID4.
+
+```
+tendermint show_node_id --home ./mytestnet/node0
+tendermint show_node_id --home ./mytestnet/node1
+tendermint show_node_id --home ./mytestnet/node2
+tendermint show_node_id --home ./mytestnet/node3
+```
+
+Finally, from each machine, run:
 
 ```
 tendermint node --home ./mytestnet/node0 --proxy_app=kvstore --p2p.persistent_peers="ID1@IP1:26656,ID2@IP2:26656,ID3@IP3:26656,ID4@IP4:26656"
@@ -121,6 +136,6 @@ tendermint node --home ./mytestnet/node3 --proxy_app=kvstore --p2p.persistent_pe
 
 Note that after the third node is started, blocks will start to stream in
 because >2/3 of validators (defined in the `genesis.json`) have come online.
-Seeds can also be specified in the `config.toml`. See [here](../tendermint-core/configuration.md) for more information about configuration options.
+Persistent peers can also be specified in the `config.toml`. See [here](../tendermint-core/configuration.md) for more information about configuration options.
 
 Transactions can then be sent as covered in the single, local node example above.

docs/introduction/what-is-tendermint.md

@@ -70,10 +70,6 @@ Tendermint is in essence similar software, but with two key differences:
   the application logic that's right for them, from key-value store to
   cryptocurrency to e-voting platform and beyond.
 
-The layout of this Tendermint website content is also ripped directly
-and without shame from [consul.io](https://www.consul.io/) and the other
-[Hashicorp sites](https://www.hashicorp.com/#tools).
-
 ### Bitcoin, Ethereum, etc.
 
 Tendermint emerged in the tradition of cryptocurrencies like Bitcoin,

docs/networks/docker-compose.md

@@ -1,20 +1,17 @@
 # Docker Compose
 
-With Docker Compose, we can spin up local testnets in a single command:
-
-```
-make localnet-start
-```
+With Docker Compose, you can spin up local testnets with a single command.
 
 ## Requirements
 
-- [Install tendermint](/docs/install.md)
-- [Install docker](https://docs.docker.com/engine/installation/)
-- [Install docker-compose](https://docs.docker.com/compose/install/)
+1. [Install tendermint](/docs/install.md)
+2. [Install docker](https://docs.docker.com/engine/installation/)
+3. [Install docker-compose](https://docs.docker.com/compose/install/)
 
 ## Build
 
-Build the `tendermint` binary and the `tendermint/localnode` docker image.
+Build the `tendermint` binary and, optionally, the `tendermint/localnode`
+docker image.
 
 Note the binary will be mounted into the container so it can be updated without
 rebuilding the image.
@@ -25,11 +22,10 @@ cd $GOPATH/src/github.com/tendermint/tendermint
 # Build the linux binary in ./build
 make build-linux
 
-# Build tendermint/localnode image
+# (optionally) Build tendermint/localnode image
 make build-docker-localnode
 ```
 
-
 ## Run a testnet
 
 To start a 4 node testnet run:
@@ -38,9 +34,13 @@ To start a 4 node testnet run:
 make localnet-start
 ```
 
-The nodes bind their RPC servers to ports 26657, 26660, 26662, and 26664 on the host.
+The nodes bind their RPC servers to ports 26657, 26660, 26662, and 26664 on the
+host.
+
 This file creates a 4-node network using the localnode image.
-The nodes of the network expose their P2P and RPC endpoints to the host machine on ports 26656-26657, 26659-26660, 26661-26662, and 26663-26664 respectively.
+
+The nodes of the network expose their P2P and RPC endpoints to the host machine
+on ports 26656-26657, 26659-26660, 26661-26662, and 26663-26664 respectively.
 
 To update the binary, just rebuild it and restart the nodes:
 
@@ -52,34 +52,40 @@ make localnet-start
 
 ## Configuration
 
-The `make localnet-start` creates files for a 4-node testnet in `./build` by calling the `tendermint testnet` command.
+The `make localnet-start` creates files for a 4-node testnet in `./build` by
+calling the `tendermint testnet` command.
 
-The `./build` directory is mounted to the `/tendermint` mount point to attach the binary and config files to the container.
+The `./build` directory is mounted to the `/tendermint` mount point to attach
+the binary and config files to the container.
 
-For instance, to create a single node testnet:
+To change the number of validators / non-validators change the `localnet-start` Makefile target:
+
+```
+localnet-start: localnet-stop
+	@if ! [ -f build/node0/config/genesis.json ]; then docker run --rm -v $(CURDIR)/build:/tendermint:Z tendermint/localnode testnet --v 5 --n 3 --o . --populate-persistent-peers --starting-ip-address 192.167.10.2 ; fi
+	docker-compose up
+```
+
+The command now will generate config files for 5 validators and 3
+non-validators network.
+
+Before running it, don't forget to cleanup the old files:
 
 ```
 cd $GOPATH/src/github.com/tendermint/tendermint
 
 # Clear the build folder
-rm -rf ./build
-
-# Build binary
-make build-linux
-
-# Create configuration
-docker run -e LOG="stdout" -v `pwd`/build:/tendermint tendermint/localnode testnet --o . --v 1
-
-#Run the node
-docker run -v `pwd`/build:/tendermint tendermint/localnode
-
+rm -rf ./build/node*
 ```
 
 ## Logging
 
-Log is saved under the attached volume, in the `tendermint.log` file. If the `LOG` environment variable is set to `stdout` at start, the log is not saved, but printed on the screen.
+Log is saved under the attached volume, in the `tendermint.log` file. If the
+`LOG` environment variable is set to `stdout` at start, the log is not saved,
+but printed on the screen.
 
 ## Special binaries
 
-If you have multiple binaries with different names, you can specify which one to run with the BINARY environment variable. The path of the binary is relative to the attached volume.
-
+If you have multiple binaries with different names, you can specify which one
+to run with the `BINARY` environment variable. The path of the binary is relative
+to the attached volume.

docs/spec/README.md

@@ -14,31 +14,31 @@ please submit them to our [bug bounty](https://tendermint.com/security)!
 
 ### Data Structures
 
-- [Encoding and Digests](https://github.com/tendermint/tendermint/blob/master/docs/spec/blockchain/encoding.md)
-- [Blockchain](https://github.com/tendermint/tendermint/blob/master/docs/spec/blockchain/blockchain.md)
-- [State](https://github.com/tendermint/tendermint/blob/master/docs/spec/blockchain/state.md)
+- [Encoding and Digests](./blockchain/encoding.md)
+- [Blockchain](./blockchain/blockchain.md)
+- [State](./blockchain/state.md)
 
 ### Consensus Protocol
 
-- [Consensus Algorithm](/docs/spec/consensus/consensus.md)
-- [Creating a proposal](/docs/spec/consensus/creating-proposal.md)
-- [Time](/docs/spec/consensus/bft-time.md)
-- [Light-Client](/docs/spec/consensus/light-client.md)
+- [Consensus Algorithm](./consensus/consensus.md)
+- [Creating a proposal](./consensus/creating-proposal.md)
+- [Time](./consensus/bft-time.md)
+- [Light-Client](./consensus/light-client.md)
 
 ### P2P and Network Protocols
 
-- [The Base P2P Layer](https://github.com/tendermint/tendermint/tree/master/docs/spec/p2p): multiplex the protocols ("reactors") on authenticated and encrypted TCP connections
-- [Peer Exchange (PEX)](https://github.com/tendermint/tendermint/tree/master/docs/spec/reactors/pex): gossip known peer addresses so peers can find each other
-- [Block Sync](https://github.com/tendermint/tendermint/tree/master/docs/spec/reactors/block_sync): gossip blocks so peers can catch up quickly
-- [Consensus](https://github.com/tendermint/tendermint/tree/master/docs/spec/reactors/consensus): gossip votes and block parts so new blocks can be committed
-- [Mempool](https://github.com/tendermint/tendermint/tree/master/docs/spec/reactors/mempool): gossip transactions so they get included in blocks
-- Evidence: Forthcoming, see [this issue](https://github.com/tendermint/tendermint/issues/2329).
+- [The Base P2P Layer](./p2p/): multiplex the protocols ("reactors") on authenticated and encrypted TCP connections
+- [Peer Exchange (PEX)](./reactors/pex/): gossip known peer addresses so peers can find each other
+- [Block Sync](./reactors/block_sync/): gossip blocks so peers can catch up quickly
+- [Consensus](./reactors/consensus/): gossip votes and block parts so new blocks can be committed
+- [Mempool](./reactors/mempool/): gossip transactions so they get included in blocks
+- [Evidence](./reactors/evidence/): sending invalid evidence will stop the peer
 
 ### Software
 
-- [ABCI](/docs/spec/software/abci.md): Details about interactions between the
+- [ABCI](./software/abci.md): Details about interactions between the
   application and consensus engine over ABCI
-- [Write-Ahead Log](/docs/spec/software/wal.md): Details about how the consensus
+- [Write-Ahead Log](./software/wal.md): Details about how the consensus
   engine preserves data and recovers from crash failures
 
 ## Overview

docs/spec/abci/abci.md

@@ -45,7 +45,9 @@ include a `Tags` field in their `Response*`. Each tag is key-value pair denoting
 something about what happened during the methods execution.
 
 Tags can be used to index transactions and blocks according to what happened
-during their execution.
+during their execution. Note that the set of tags returned for a block from
+`BeginBlock` and `EndBlock` are merged. In case both methods return the same
+tag, only the value defined in `EndBlock` is used.
 
 Keys and values in tags must be UTF-8 encoded strings (e.g.
 "account.owner": "Bob", "balance": "100.0",

docs/spec/blockchain/encoding.md

@@ -59,22 +59,14 @@ You can simply use below table and concatenate Prefix || Length (of raw bytes) |
 | PubKeySecp256k1    | tendermint/PubKeySecp256k1    | 0xEB5AE987 | 0x21     |       |
 | PrivKeyEd25519     | tendermint/PrivKeyEd25519     | 0xA3288910 | 0x40     |       |
 | PrivKeySecp256k1   | tendermint/PrivKeySecp256k1   | 0xE1B0F79B | 0x20     |       |
-| SignatureEd25519   | tendermint/SignatureEd25519   | 0x2031EA53 | 0x40     |       |
-| SignatureSecp256k1 | tendermint/SignatureSecp256k1 | 0x7FC4A495 | variable |
+| PubKeyMultisigThreshold | tendermint/PubKeyMultisigThreshold | 0x22C1F7E2 | variable |  |
 
-|
+### Example
 
-### Examples
-
-1. For example, the 33-byte (or 0x21-byte in hex) Secp256k1 pubkey
+For example, the 33-byte (or 0x21-byte in hex) Secp256k1 pubkey
    `020BD40F225A57ED383B440CF073BC5539D0341F5767D2BF2D78406D00475A2EE9`
    would be encoded as
-   `EB5AE98221020BD40F225A57ED383B440CF073BC5539D0341F5767D2BF2D78406D00475A2EE9`
-
-2. For example, the variable size Secp256k1 signature (in this particular example 70 or 0x46 bytes)
-   `304402201CD4B8C764D2FD8AF23ECFE6666CA8A53886D47754D951295D2D311E1FEA33BF02201E0F906BB1CF2C30EAACFFB032A7129358AFF96B9F79B06ACFFB18AC90C2ADD7`
-   would be encoded as
-   `16E1FEEA46304402201CD4B8C764D2FD8AF23ECFE6666CA8A53886D47754D951295D2D311E1FEA33BF02201E0F906BB1CF2C30EAACFFB032A7129358AFF96B9F79B06ACFFB18AC90C2ADD7`
+   `EB5AE98721020BD40F225A57ED383B440CF073BC5539D0341F5767D2BF2D78406D00475A2EE9`
 
 ### Addresses
 

docs/spec/blockchain/state.md

@@ -98,6 +98,10 @@ type Evidence struct {
 type Validator struct {
 	PubKeyTypes []string
 }
+
+type ValidatorParams struct {
+	PubKeyTypes []string
+}
 ```
 
 #### BlockSize

docs/spec/reactors/block_sync/reactor.md

@@ -65,24 +65,24 @@ type Requester {
   mtx          Mutex
   block        Block
   height       int64
- 
peerID       p2p.ID
-  redoChannel  chan struct{}
+ 
 peerID       p2p.ID
+  redoChannel  chan p2p.ID //redo may send multi-time; peerId is used to identify repeat
 }
 ```
 
-Pool is core data structure that stores last executed block (`height`), assignment of requests to peers (`requesters`), current height for each peer and number of pending requests for each peer (`peers`), maximum peer height, etc.
+Pool is a core data structure that stores last executed block (`height`), assignment of requests to peers (`requesters`), current height for each peer and number of pending requests for each peer (`peers`), maximum peer height, etc.
 
 ```go
 type Pool {
-  mtx Mutex
-  requesters       map[int64]*Requester
-  height           int64
-  peers            map[p2p.ID]*Peer
-  maxPeerHeight    int64
-  numPending       int32
-  store            BlockStore
-  requestsChannel  chan<- BlockRequest
-  errorsChannel    chan<- peerError
+  mtx                Mutex
+  requesters         map[int64]*Requester
+  height             int64
+  peers              map[p2p.ID]*Peer
+  maxPeerHeight      int64
+  numPending         int32
+  store              BlockStore
+  requestsChannel    chan<- BlockRequest
+  errorsChannel      chan<- peerError
 }
 ```
 
@@ -90,11 +90,11 @@ Peer data structure stores for each peer current `height` and number of pending
 
 ```go
 type Peer struct {
-  id         p2p.ID
-  height     int64
-  numPending int32
-  timeout    *time.Timer
-  didTimeout bool
+  id           p2p.ID
+  height       int64
+  numPending   int32
+  timeout      *time.Timer
+  didTimeout   bool
 }
 ```
 
@@ -169,11 +169,11 @@ Requester task is responsible for fetching a single block at position `height`.
 
 ```go
 fetchBlock(height, pool):
-  while true do
+  while true do {
     peerID = nil
     block = nil
     peer = pickAvailablePeer(height)
-    peerId = peer.id
+    peerID = peer.id
 
     enqueue BlockRequest(height, peerID) to pool.requestsChannel
     redo = false
@@ -181,12 +181,15 @@ fetchBlock(height, pool):
       select {
         upon receiving Quit message do
           return
-        upon receiving message on redoChannel do
-          mtx.Lock()
-          pool.numPending++
-          redo = true
-          mtx.UnLock()
+        upon receiving redo message with id on redoChannel do
+          if peerID == id {
+            mtx.Lock()
+            pool.numPending++
+            redo = true
+            mtx.UnLock()	
+          }
       }
+    }
 
 pickAvailablePeer(height):
   selectedPeer = nil
@@ -244,7 +247,7 @@ createRequesters(pool):
 main(pool):
   create trySyncTicker with interval trySyncIntervalMS
   create statusUpdateTicker with interval statusUpdateIntervalSeconds
-  create switchToConsensusTicker with interbal switchToConsensusIntervalSeconds
+  create switchToConsensusTicker with interval switchToConsensusIntervalSeconds
 
   while true do
     select {

docs/spec/reactors/consensus/consensus-reactor.md

@@ -338,12 +338,11 @@ BlockID has seen +2/3 votes. This routine is based on the local RoundState (`rs`
 
 ## Broadcast routine
 
-The Broadcast routine subscribes to an internal event bus to receive new round steps, votes messages and proposal
-heartbeat messages, and broadcasts messages to peers upon receiving those events.
+The Broadcast routine subscribes to an internal event bus to receive new round steps and votes messages, and broadcasts messages to peers upon receiving those 
+events.
 It broadcasts `NewRoundStepMessage` or `CommitStepMessage` upon new round state event. Note that
 broadcasting these messages does not depend on the PeerRoundState; it is sent on the StateChannel.
 Upon receiving VoteMessage it broadcasts `HasVoteMessage` message to its peers on the StateChannel.
-`ProposalHeartbeatMessage` is sent the same way on the StateChannel.
 
 ## Channels
 

docs/spec/reactors/consensus/consensus.md

@@ -89,33 +89,6 @@ type BlockPartMessage struct {
 }
 ```
 
-## ProposalHeartbeatMessage
-
-ProposalHeartbeatMessage is sent to signal that a node is alive and waiting for transactions
-to be able to create a next block proposal.
-
-```go
-type ProposalHeartbeatMessage struct {
-    Heartbeat Heartbeat
-}
-```
-
-### Heartbeat
-
-Heartbeat contains validator information (address and index),
-height, round and sequence number. It is signed by the private key of the validator.
-
-```go
-type Heartbeat struct {
-    ValidatorAddress []byte
-    ValidatorIndex   int
-    Height           int64
-    Round            int
-    Sequence         int
-    Signature        Signature
-}
-```
-
 ## NewRoundStepMessage
 
 NewRoundStepMessage is sent for every step transition during the core consensus algorithm execution.

docs/tendermint-core/configuration.md

@@ -36,22 +36,26 @@ db_backend = "leveldb"
 # Database directory
 db_dir = "data"
 
-# Output level for logging
-log_level = "state:info,*:error"
+# Output level for logging, including package level options
+log_level = "main:info,state:info,*:error"
 
 # Output format: 'plain' (colored text) or 'json'
 log_format = "plain"
 
 ##### additional base config options #####
 
-# The ID of the chain to join (should be signed with every transaction and vote)
-chain_id = ""
-
 # Path to the JSON file containing the initial validator set and other meta data
-genesis_file = "genesis.json"
+genesis_file = "config/genesis.json"
 
 # Path to the JSON file containing the private key to use as a validator in the consensus protocol
-priv_validator_file = "priv_validator.json"
+priv_validator_file = "config/priv_validator.json"
+
+# TCP or UNIX socket address for Tendermint to listen on for
+# connections from an external PrivValidator process
+priv_validator_laddr = ""
+
+# Path to the JSON file containing the private key to use for node authentication in the p2p protocol
+node_key_file = "config/node_key.json"
 
 # Mechanism to connect to the ABCI application: socket | grpc
 abci = "socket"
@@ -74,13 +78,13 @@ laddr = "tcp://0.0.0.0:26657"
 # A list of origins a cross-domain request can be executed from
 # Default value '[]' disables cors support
 # Use '["*"]' to allow any origin
-cors_allowed_origins = "[]"
+cors_allowed_origins = []
 
 # A list of methods the client is allowed to use with cross-domain requests
-cors_allowed_methods = "[HEAD GET POST]"
+cors_allowed_methods = ["HEAD", "GET", "POST"]
 
 # A list of non simple headers the client is allowed to use with cross-domain requests
-cors_allowed_headers = "[Origin Accept Content-Type X-Requested-With X-Server-Time]"
+cors_allowed_headers = ["Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"]
 
 # TCP or UNIX socket address for the gRPC server to listen on
 # NOTE: This server only supports /broadcast_tx_commit
@@ -88,7 +92,7 @@ grpc_laddr = ""
 
 # Maximum number of simultaneous connections.
 # Does not include RPC (HTTP&WebSocket) connections. See max_open_connections
-# If you want to accept more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
@@ -100,7 +104,7 @@ unsafe = false
 
 # Maximum number of simultaneous connections (including WebSocket).
 # Does not include gRPC connections. See grpc_max_open_connections
-# If you want to accept more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files}
@@ -113,6 +117,12 @@ max_open_connections = 900
 # Address to listen for incoming connections
 laddr = "tcp://0.0.0.0:26656"
 
+# Address to advertise to peers for them to dial
+# If empty, will use the same port as the laddr,
+# and will introspect on the listener or use UPnP
+# to figure out the address.
+external_address = ""
+
 # Comma separated list of seed nodes to connect to
 seeds = ""
 
@@ -123,7 +133,7 @@ persistent_peers = ""
 upnp = false
 
 # Path to address book
-addr_book_file = "addrbook.json"
+addr_book_file = "config/addrbook.json"
 
 # Set true for strict address routability rules
 # Set false for private or local networks
@@ -171,26 +181,26 @@ dial_timeout = "3s"
 
 recheck = true
 broadcast = true
-wal_dir = "data/mempool.wal"
+wal_dir = ""
 
 # size of the mempool
-size = 100000
+size = 5000
 
 # size of the cache (used to filter transactions we saw earlier)
-cache_size = 100000
+cache_size = 10000
 
 ##### consensus configuration options #####
 [consensus]
 
 wal_file = "data/cs.wal/wal"
 
-timeout_propose = "3000ms"
+timeout_propose = "3s"
 timeout_propose_delta = "500ms"
-timeout_prevote = "1000ms"
+timeout_prevote = "1s"
 timeout_prevote_delta = "500ms"
-timeout_precommit = "1000ms"
+timeout_precommit = "1s"
 timeout_precommit_delta = "500ms"
-timeout_commit = "1000ms"
+timeout_commit = "1s"
 
 # Make progress as soon as we have all the precommits (as if TimeoutCommit = 0)
 skip_timeout_commit = false
@@ -201,7 +211,10 @@ create_empty_blocks_interval = "0s"
 
 # Reactor sleep duration parameters
 peer_gossip_sleep_duration = "100ms"
-peer_query_maj23_sleep_duration = "2000ms"
+peer_query_maj23_sleep_duration = "2s"
+
+# Block time parameters. Corresponds to the minimum time increment between consecutive blocks.
+blocktime_iota = "1s"
 
 ##### transactions indexer configuration options #####
 [tx_index]
@@ -242,7 +255,7 @@ prometheus = false
 prometheus_listen_addr = ":26660"
 
 # Maximum number of simultaneous connections.
-# If you want to accept a more significant number than the default, make sure
+# If you want to accept a larger number than the default, make sure
 # you increase your OS limits.
 # 0 - unlimited.
 max_open_connections = 3

docs/tendermint-core/using-tendermint.md

@@ -519,18 +519,16 @@ developers guide](../app-dev/app-development.md) for more details.
 
 ### Local Network
 
-To run a network locally, say on a single machine, you must change the
-`_laddr` fields in the `config.toml` (or using the flags) so that the
-listening addresses of the various sockets don't conflict. Additionally,
-you must set `addr_book_strict=false` in the `config.toml`, otherwise
-Tendermint's p2p library will deny making connections to peers with the
-same IP address.
+To run a network locally, say on a single machine, you must change the `_laddr`
+fields in the `config.toml` (or using the flags) so that the listening
+addresses of the various sockets don't conflict. Additionally, you must set
+`addr_book_strict=false` in the `config.toml`, otherwise Tendermint's p2p
+library will deny making connections to peers with the same IP address.
 
 ### Upgrading
 
-The Tendermint development cycle currently includes a lot of breaking changes.
-Upgrading from an old version to a new version usually means throwing
-away the chain data. Try out the
-[tm-migrate](https://github.com/hxzqlh/tm-tools) tool written by
-[@hxzqlh](https://github.com/hxzqlh) if you are keen to preserve the
-state of your chain when upgrading to newer versions.
+See the
+[UPGRADING.md](https://github.com/tendermint/tendermint/blob/master/UPGRADING.md)
+guide. You may need to reset your chain between major breaking releases.
+Although, we expect Tendermint to have fewer breaking releases in the future
+(especially after 1.0 release).

evidence/pool_test.go

@@ -35,7 +35,7 @@ func initializeValidatorState(valAddr []byte, height int64) dbm.DB {
 		LastBlockHeight:             0,
 		LastBlockTime:               tmtime.Now(),
 		Validators:                  valSet,
-		NextValidators:              valSet.CopyIncrementAccum(1),
+		NextValidators:              valSet.CopyIncrementProposerPriority(1),
 		LastHeightValidatorsChanged: 1,
 		ConsensusParams: types.ConsensusParams{
 			Evidence: types.EvidenceParams{

evidence/reactor.go

@@ -163,7 +163,7 @@ func (evR EvidenceReactor) checkSendEvidenceMessage(peer p2p.Peer, ev types.Evid
 	// make sure the peer is up to date
 	evHeight := ev.Height()
 	peerState, ok := peer.Get(types.PeerStateKey).(PeerState)
-	if !ok { 
+	if !ok {
 		// Peer does not have a state yet. We set it in the consensus reactor, but
 		// when we add peer in Switch, the order we call reactors#AddPeer is
 		// different every time due to us using a map. Sometimes other reactors

libs/autofile/autofile_test.go

@@ -119,4 +119,4 @@ func TestAutoFileSize(t *testing.T) {
 
 	// Cleanup
 	_ = os.Remove(f.Name())
-}
+}

libs/cli/flags/log_level_test.go

@@ -51,7 +51,7 @@ func TestParseLogLevel(t *testing.T) {
 
 		buf.Reset()
 
-		logger.With("module", "wire").Debug("Kingpin")
+		logger.With("module", "mempool").With("module", "wire").Debug("Kingpin")
 		if have := strings.TrimSpace(buf.String()); c.expectedLogLines[0] != have {
 			t.Errorf("\nwant '%s'\nhave '%s'\nlevel '%s'", c.expectedLogLines[0], have, c.lvl)
 		}

libs/common/string.go

@@ -61,3 +61,16 @@ func ASCIITrim(s string) string {
 	}
 	return string(r)
 }
+
+// StringSliceEqual checks if string slices a and b are equal
+func StringSliceEqual(a, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := 0; i < len(a); i++ {
+		if a[i] != b[i] {
+			return false
+		}
+	}
+	return true
+}

libs/common/string_test.go

@@ -3,6 +3,8 @@ package common
 import (
 	"testing"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -35,3 +37,22 @@ func TestASCIITrim(t *testing.T) {
 	assert.Equal(t, ASCIITrim(" a "), "a")
 	assert.Panics(t, func() { ASCIITrim("\xC2\xA2") })
 }
+
+func TestStringSliceEqual(t *testing.T) {
+	tests := []struct {
+		a    []string
+		b    []string
+		want bool
+	}{
+		{[]string{"hello", "world"}, []string{"hello", "world"}, true},
+		{[]string{"test"}, []string{"test"}, true},
+		{[]string{"test1"}, []string{"test2"}, false},
+		{[]string{"hello", "world."}, []string{"hello", "world!"}, false},
+		{[]string{"only 1 word"}, []string{"two", "words!"}, false},
+		{[]string{"two", "words!"}, []string{"only 1 word"}, false},
+	}
+	for i, tt := range tests {
+		require.Equal(t, tt.want, StringSliceEqual(tt.a, tt.b),
+			"StringSliceEqual failed on test %d", i)
+	}
+}

libs/db/backend_test.go

@@ -180,13 +180,13 @@ func testDBIterator(t *testing.T, backend DBBackendType) {
 	verifyIterator(t, db.ReverseIterator(nil, nil), []int64{9, 8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator")
 
 	verifyIterator(t, db.Iterator(nil, int642Bytes(0)), []int64(nil), "forward iterator to 0")
-	verifyIterator(t, db.ReverseIterator(nil, int642Bytes(10)), []int64(nil), "reverse iterator 10")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(10), nil), []int64(nil), "reverse iterator from 10 (ex)")
 
 	verifyIterator(t, db.Iterator(int642Bytes(0), nil), []int64{0, 1, 2, 3, 4, 5, 7, 8, 9}, "forward iterator from 0")
 	verifyIterator(t, db.Iterator(int642Bytes(1), nil), []int64{1, 2, 3, 4, 5, 7, 8, 9}, "forward iterator from 1")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(10), nil), []int64{9, 8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 10")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(9), nil), []int64{9, 8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 9")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(8), nil), []int64{8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 8")
+	verifyIterator(t, db.ReverseIterator(nil, int642Bytes(10)), []int64{9, 8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 10 (ex)")
+	verifyIterator(t, db.ReverseIterator(nil, int642Bytes(9)), []int64{8, 7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 9 (ex)")
+	verifyIterator(t, db.ReverseIterator(nil, int642Bytes(8)), []int64{7, 5, 4, 3, 2, 1, 0}, "reverse iterator from 8 (ex)")
 
 	verifyIterator(t, db.Iterator(int642Bytes(5), int642Bytes(6)), []int64{5}, "forward iterator from 5 to 6")
 	verifyIterator(t, db.Iterator(int642Bytes(5), int642Bytes(7)), []int64{5}, "forward iterator from 5 to 7")
@@ -195,20 +195,20 @@ func testDBIterator(t *testing.T, backend DBBackendType) {
 	verifyIterator(t, db.Iterator(int642Bytes(6), int642Bytes(8)), []int64{7}, "forward iterator from 6 to 8")
 	verifyIterator(t, db.Iterator(int642Bytes(7), int642Bytes(8)), []int64{7}, "forward iterator from 7 to 8")
 
-	verifyIterator(t, db.ReverseIterator(int642Bytes(5), int642Bytes(4)), []int64{5}, "reverse iterator from 5 to 4")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(6), int642Bytes(4)), []int64{5}, "reverse iterator from 6 to 4")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(7), int642Bytes(4)), []int64{7, 5}, "reverse iterator from 7 to 4")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(6), int642Bytes(5)), []int64(nil), "reverse iterator from 6 to 5")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(7), int642Bytes(5)), []int64{7}, "reverse iterator from 7 to 5")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(7), int642Bytes(6)), []int64{7}, "reverse iterator from 7 to 6")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(4), int642Bytes(5)), []int64{4}, "reverse iterator from 5 (ex) to 4")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(4), int642Bytes(6)), []int64{5, 4}, "reverse iterator from 6 (ex) to 4")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(4), int642Bytes(7)), []int64{5, 4}, "reverse iterator from 7 (ex) to 4")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(5), int642Bytes(6)), []int64{5}, "reverse iterator from 6 (ex) to 5")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(5), int642Bytes(7)), []int64{5}, "reverse iterator from 7 (ex) to 5")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(6), int642Bytes(7)), []int64(nil), "reverse iterator from 7 (ex) to 6")
 
 	verifyIterator(t, db.Iterator(int642Bytes(0), int642Bytes(1)), []int64{0}, "forward iterator from 0 to 1")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(9), int642Bytes(8)), []int64{9}, "reverse iterator from 9 to 8")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(8), int642Bytes(9)), []int64{8}, "reverse iterator from 9 (ex) to 8")
 
 	verifyIterator(t, db.Iterator(int642Bytes(2), int642Bytes(4)), []int64{2, 3}, "forward iterator from 2 to 4")
 	verifyIterator(t, db.Iterator(int642Bytes(4), int642Bytes(2)), []int64(nil), "forward iterator from 4 to 2")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(4), int642Bytes(2)), []int64{4, 3}, "reverse iterator from 4 to 2")
-	verifyIterator(t, db.ReverseIterator(int642Bytes(2), int642Bytes(4)), []int64(nil), "reverse iterator from 2 to 4")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(2), int642Bytes(4)), []int64{3, 2}, "reverse iterator from 4 (ex) to 2")
+	verifyIterator(t, db.ReverseIterator(int642Bytes(4), int642Bytes(2)), []int64(nil), "reverse iterator from 2 (ex) to 4")
 
 }
 

libs/db/c_level_db.go

@@ -205,13 +205,13 @@ type cLevelDBIterator struct {
 
 func newCLevelDBIterator(source *levigo.Iterator, start, end []byte, isReverse bool) *cLevelDBIterator {
 	if isReverse {
-		if start == nil {
+		if end == nil {
 			source.SeekToLast()
 		} else {
-			source.Seek(start)
+			source.Seek(end)
 			if source.Valid() {
-				soakey := source.Key() // start or after key
-				if bytes.Compare(start, soakey) < 0 {
+				eoakey := source.Key() // end or after key
+				if bytes.Compare(end, eoakey) <= 0 {
 					source.Prev()
 				}
 			} else {
@@ -255,10 +255,11 @@ func (itr cLevelDBIterator) Valid() bool {
 	}
 
 	// If key is end or past it, invalid.
+	var start = itr.start
 	var end = itr.end
 	var key = itr.source.Key()
 	if itr.isReverse {
-		if end != nil && bytes.Compare(key, end) <= 0 {
+		if start != nil && bytes.Compare(key, start) < 0 {
 			itr.isInvalid = true
 			return false
 		}

libs/db/fsdb.go

@@ -161,7 +161,7 @@ func (db *FSDB) MakeIterator(start, end []byte, isReversed bool) Iterator {
 
 	// We need a copy of all of the keys.
 	// Not the best, but probably not a bottleneck depending.
-	keys, err := list(db.dir, start, end, isReversed)
+	keys, err := list(db.dir, start, end)
 	if err != nil {
 		panic(errors.Wrapf(err, "Listing keys in %s", db.dir))
 	}
@@ -229,7 +229,7 @@ func remove(path string) error {
 
 // List keys in a directory, stripping of escape sequences and dir portions.
 // CONTRACT: returns os errors directly without wrapping.
-func list(dirPath string, start, end []byte, isReversed bool) ([]string, error) {
+func list(dirPath string, start, end []byte) ([]string, error) {
 	dir, err := os.Open(dirPath)
 	if err != nil {
 		return nil, err
@@ -247,7 +247,7 @@ func list(dirPath string, start, end []byte, isReversed bool) ([]string, error)
 			return nil, fmt.Errorf("Failed to unescape %s while listing", name)
 		}
 		key := unescapeKey([]byte(n))
-		if IsKeyInDomain(key, start, end, isReversed) {
+		if IsKeyInDomain(key, start, end) {
 			keys = append(keys, string(key))
 		}
 	}

libs/db/go_level_db.go

@@ -213,13 +213,13 @@ var _ Iterator = (*goLevelDBIterator)(nil)
 
 func newGoLevelDBIterator(source iterator.Iterator, start, end []byte, isReverse bool) *goLevelDBIterator {
 	if isReverse {
-		if start == nil {
+		if end == nil {
 			source.Last()
 		} else {
-			valid := source.Seek(start)
+			valid := source.Seek(end)
 			if valid {
-				soakey := source.Key() // start or after key
-				if bytes.Compare(start, soakey) < 0 {
+				eoakey := source.Key() // end or after key
+				if bytes.Compare(end, eoakey) <= 0 {
 					source.Prev()
 				}
 			} else {
@@ -265,11 +265,12 @@ func (itr *goLevelDBIterator) Valid() bool {
 	}
 
 	// If key is end or past it, invalid.
+	var start = itr.start
 	var end = itr.end
 	var key = itr.source.Key()
 
 	if itr.isReverse {
-		if end != nil && bytes.Compare(key, end) <= 0 {
+		if start != nil && bytes.Compare(key, start) < 0 {
 			itr.isInvalid = true
 			return false
 		}

libs/db/mem_db.go

@@ -237,7 +237,7 @@ func (itr *memDBIterator) assertIsValid() {
 func (db *MemDB) getSortedKeys(start, end []byte, reverse bool) []string {
 	keys := []string{}
 	for key := range db.db {
-		inDomain := IsKeyInDomain([]byte(key), start, end, reverse)
+		inDomain := IsKeyInDomain([]byte(key), start, end)
 		if inDomain {
 			keys = append(keys, key)
 		}

libs/db/prefix_db.go

@@ -131,27 +131,13 @@ func (pdb *prefixDB) ReverseIterator(start, end []byte) Iterator {
 	defer pdb.mtx.Unlock()
 
 	var pstart, pend []byte
-	if start == nil {
-		// This may cause the underlying iterator to start with
-		// an item which doesn't start with prefix.  We will skip
-		// that item later in this function. See 'skipOne'.
-		pstart = cpIncr(pdb.prefix)
-	} else {
-		pstart = append(cp(pdb.prefix), start...)
-	}
+	pstart = append(cp(pdb.prefix), start...)
 	if end == nil {
-		// This may cause the underlying iterator to end with an
-		// item which doesn't start with prefix.  The
-		// prefixIterator will terminate iteration
-		// automatically upon detecting this.
-		pend = cpDecr(pdb.prefix)
+		pend = cpIncr(pdb.prefix)
 	} else {
 		pend = append(cp(pdb.prefix), end...)
 	}
 	ritr := pdb.db.ReverseIterator(pstart, pend)
-	if start == nil {
-		skipOne(ritr, cpIncr(pdb.prefix))
-	}
 	return newPrefixIterator(
 		pdb.prefix,
 		start,
@@ -310,7 +296,6 @@ func (itr *prefixIterator) Next() {
 	}
 	itr.source.Next()
 	if !itr.source.Valid() || !bytes.HasPrefix(itr.source.Key(), itr.prefix) {
-		itr.source.Close()
 		itr.valid = false
 		return
 	}
@@ -345,13 +330,3 @@ func stripPrefix(key []byte, prefix []byte) (stripped []byte) {
 	}
 	return key[len(prefix):]
 }
-
-// If the first iterator item is skipKey, then
-// skip it.
-func skipOne(itr Iterator, skipKey []byte) {
-	if itr.Valid() {
-		if bytes.Equal(itr.Key(), skipKey) {
-			itr.Next()
-		}
-	}
-}

libs/db/prefix_db_test.go

@@ -113,8 +113,46 @@ func TestPrefixDBReverseIterator2(t *testing.T) {
 	db := mockDBWithStuff()
 	pdb := NewPrefixDB(db, bz("key"))
 
+	itr := pdb.ReverseIterator(bz(""), nil)
+	checkDomain(t, itr, bz(""), nil)
+	checkItem(t, itr, bz("3"), bz("value3"))
+	checkNext(t, itr, true)
+	checkItem(t, itr, bz("2"), bz("value2"))
+	checkNext(t, itr, true)
+	checkItem(t, itr, bz("1"), bz("value1"))
+	checkNext(t, itr, true)
+	checkItem(t, itr, bz(""), bz("value"))
+	checkNext(t, itr, false)
+	checkInvalid(t, itr)
+	itr.Close()
+}
+
+func TestPrefixDBReverseIterator3(t *testing.T) {
+	db := mockDBWithStuff()
+	pdb := NewPrefixDB(db, bz("key"))
+
 	itr := pdb.ReverseIterator(nil, bz(""))
 	checkDomain(t, itr, nil, bz(""))
+	checkInvalid(t, itr)
+	itr.Close()
+}
+
+func TestPrefixDBReverseIterator4(t *testing.T) {
+	db := mockDBWithStuff()
+	pdb := NewPrefixDB(db, bz("key"))
+
+	itr := pdb.ReverseIterator(bz(""), bz(""))
+	checkDomain(t, itr, bz(""), bz(""))
+	checkInvalid(t, itr)
+	itr.Close()
+}
+
+func TestPrefixDBReverseIterator5(t *testing.T) {
+	db := mockDBWithStuff()
+	pdb := NewPrefixDB(db, bz("key"))
+
+	itr := pdb.ReverseIterator(bz("1"), nil)
+	checkDomain(t, itr, bz("1"), nil)
 	checkItem(t, itr, bz("3"), bz("value3"))
 	checkNext(t, itr, true)
 	checkItem(t, itr, bz("2"), bz("value2"))
@@ -125,23 +163,30 @@ func TestPrefixDBReverseIterator2(t *testing.T) {
 	itr.Close()
 }
 
-func TestPrefixDBReverseIterator3(t *testing.T) {
+func TestPrefixDBReverseIterator6(t *testing.T) {
 	db := mockDBWithStuff()
 	pdb := NewPrefixDB(db, bz("key"))
 
-	itr := pdb.ReverseIterator(bz(""), nil)
-	checkDomain(t, itr, bz(""), nil)
-	checkItem(t, itr, bz(""), bz("value"))
+	itr := pdb.ReverseIterator(bz("2"), nil)
+	checkDomain(t, itr, bz("2"), nil)
+	checkItem(t, itr, bz("3"), bz("value3"))
+	checkNext(t, itr, true)
+	checkItem(t, itr, bz("2"), bz("value2"))
 	checkNext(t, itr, false)
 	checkInvalid(t, itr)
 	itr.Close()
 }
 
-func TestPrefixDBReverseIterator4(t *testing.T) {
+func TestPrefixDBReverseIterator7(t *testing.T) {
 	db := mockDBWithStuff()
 	pdb := NewPrefixDB(db, bz("key"))
 
-	itr := pdb.ReverseIterator(bz(""), bz(""))
+	itr := pdb.ReverseIterator(nil, bz("2"))
+	checkDomain(t, itr, nil, bz("2"))
+	checkItem(t, itr, bz("1"), bz("value1"))
+	checkNext(t, itr, true)
+	checkItem(t, itr, bz(""), bz("value"))
+	checkNext(t, itr, false)
 	checkInvalid(t, itr)
 	itr.Close()
 }

libs/db/types.go

@@ -34,9 +34,9 @@ type DB interface {
 	Iterator(start, end []byte) Iterator
 
 	// Iterate over a domain of keys in descending order. End is exclusive.
-	// Start must be greater than end, or the Iterator is invalid.
-	// If start is nil, iterates from the last/greatest item (inclusive).
-	// If end is nil, iterates up to the first/least item (inclusive).
+	// Start must be less than end, or the Iterator is invalid.
+	// If start is nil, iterates up to the first/least item (inclusive).
+	// If end is nil, iterates from the last/greatest item (inclusive).
 	// CONTRACT: No writes may happen within a domain while an iterator exists over it.
 	// CONTRACT: start, end readonly []byte
 	ReverseIterator(start, end []byte) Iterator

libs/db/util.go

@@ -33,46 +33,13 @@ func cpIncr(bz []byte) (ret []byte) {
 	return nil
 }
 
-// Returns a slice of the same length (big endian)
-// except decremented by one.
-// Returns nil on underflow (e.g. if bz bytes are all 0x00)
-// CONTRACT: len(bz) > 0
-func cpDecr(bz []byte) (ret []byte) {
-	if len(bz) == 0 {
-		panic("cpDecr expects non-zero bz length")
-	}
-	ret = cp(bz)
-	for i := len(bz) - 1; i >= 0; i-- {
-		if ret[i] > byte(0x00) {
-			ret[i]--
-			return
-		}
-		ret[i] = byte(0xFF)
-		if i == 0 {
-			// Underflow
-			return nil
-		}
-	}
-	return nil
-}
-
 // See DB interface documentation for more information.
-func IsKeyInDomain(key, start, end []byte, isReverse bool) bool {
-	if !isReverse {
-		if bytes.Compare(key, start) < 0 {
-			return false
-		}
-		if end != nil && bytes.Compare(end, key) <= 0 {
-			return false
-		}
-		return true
-	} else {
-		if start != nil && bytes.Compare(start, key) < 0 {
-			return false
-		}
-		if end != nil && bytes.Compare(key, end) <= 0 {
-			return false
-		}
-		return true
+func IsKeyInDomain(key, start, end []byte) bool {
+	if bytes.Compare(key, start) < 0 {
+		return false
 	}
+	if end != nil && bytes.Compare(end, key) <= 0 {
+		return false
+	}
+	return true
 }

libs/log/filter.go

@@ -11,9 +11,10 @@ const (
 )
 
 type filter struct {
-	next           Logger
-	allowed        level            // XOR'd levels for default case
-	allowedKeyvals map[keyval]level // When key-value match, use this level
+	next             Logger
+	allowed          level            // XOR'd levels for default case
+	initiallyAllowed level            // XOR'd levels for initial case
+	allowedKeyvals   map[keyval]level // When key-value match, use this level
 }
 
 type keyval struct {
@@ -33,6 +34,7 @@ func NewFilter(next Logger, options ...Option) Logger {
 	for _, option := range options {
 		option(l)
 	}
+	l.initiallyAllowed = l.allowed
 	return l
 }
 
@@ -76,14 +78,45 @@ func (l *filter) Error(msg string, keyvals ...interface{}) {
 //     logger = log.NewFilter(logger, log.AllowError(), log.AllowInfoWith("module", "crypto"), log.AllowNoneWith("user", "Sam"))
 //		 logger.With("user", "Sam").With("module", "crypto").Info("Hello") # produces "I... Hello module=crypto user=Sam"
 func (l *filter) With(keyvals ...interface{}) Logger {
+	keyInAllowedKeyvals := false
+
 	for i := len(keyvals) - 2; i >= 0; i -= 2 {
 		for kv, allowed := range l.allowedKeyvals {
-			if keyvals[i] == kv.key && keyvals[i+1] == kv.value {
-				return &filter{next: l.next.With(keyvals...), allowed: allowed, allowedKeyvals: l.allowedKeyvals}
+			if keyvals[i] == kv.key {
+				keyInAllowedKeyvals = true
+				// Example:
+				//		logger = log.NewFilter(logger, log.AllowError(), log.AllowInfoWith("module", "crypto"))
+				//		logger.With("module", "crypto")
+				if keyvals[i+1] == kv.value {
+					return &filter{
+						next:             l.next.With(keyvals...),
+						allowed:          allowed, // set the desired level
+						allowedKeyvals:   l.allowedKeyvals,
+						initiallyAllowed: l.initiallyAllowed,
+					}
+				}
 			}
 		}
 	}
-	return &filter{next: l.next.With(keyvals...), allowed: l.allowed, allowedKeyvals: l.allowedKeyvals}
+
+	// Example:
+	//		logger = log.NewFilter(logger, log.AllowError(), log.AllowInfoWith("module", "crypto"))
+	//		logger.With("module", "main")
+	if keyInAllowedKeyvals {
+		return &filter{
+			next:             l.next.With(keyvals...),
+			allowed:          l.initiallyAllowed, // return back to initially allowed
+			allowedKeyvals:   l.allowedKeyvals,
+			initiallyAllowed: l.initiallyAllowed,
+		}
+	}
+
+	return &filter{
+		next:             l.next.With(keyvals...),
+		allowed:          l.allowed, // simply continue with the current level
+		allowedKeyvals:   l.allowedKeyvals,
+		initiallyAllowed: l.initiallyAllowed,
+	}
 }
 
 //--------------------------------------------------------------------------------

libs/log/testing_logger.go

@@ -1,6 +1,7 @@
 package log
 
 import (
+	"io"
 	"os"
 	"testing"
 
@@ -19,12 +20,22 @@ var (
 // inside a test (not in the init func) because
 // verbose flag only set at the time of testing.
 func TestingLogger() Logger {
+	return TestingLoggerWithOutput(os.Stdout)
+}
+
+// TestingLoggerWOutput returns a TMLogger which writes to (w io.Writer) if testing being run
+// with the verbose (-v) flag, NopLogger otherwise.
+//
+// Note that the call to TestingLoggerWithOutput(w io.Writer) must be made
+// inside a test (not in the init func) because
+// verbose flag only set at the time of testing.
+func TestingLoggerWithOutput(w io.Writer) Logger {
 	if _testingLogger != nil {
 		return _testingLogger
 	}
 
 	if testing.Verbose() {
-		_testingLogger = NewTMLogger(NewSyncWriter(os.Stdout))
+		_testingLogger = NewTMLogger(NewSyncWriter(w))
 	} else {
 		_testingLogger = NewNopLogger()
 	}

lite/dbprovider.go

@@ -105,8 +105,8 @@ func (dbp *DBProvider) LatestFullCommit(chainID string, minHeight, maxHeight int
 	}
 
 	itr := dbp.db.ReverseIterator(
-		signedHeaderKey(chainID, maxHeight),
-		signedHeaderKey(chainID, minHeight-1),
+		signedHeaderKey(chainID, minHeight),
+		append(signedHeaderKey(chainID, maxHeight), byte(0x00)),
 	)
 	defer itr.Close()
 
@@ -190,8 +190,8 @@ func (dbp *DBProvider) deleteAfterN(chainID string, after int) error {
 	dbp.logger.Info("DBProvider.deleteAfterN()...", "chainID", chainID, "after", after)
 
 	itr := dbp.db.ReverseIterator(
-		signedHeaderKey(chainID, 1<<63-1),
-		signedHeaderKey(chainID, 0),
+		signedHeaderKey(chainID, 1),
+		append(signedHeaderKey(chainID, 1<<63-1), byte(0x00)),
 	)
 	defer itr.Close()
 

lite/doc.go

@@ -121,7 +121,7 @@ If we cannot update directly from H -> H' because there was too much change to
 the validator set, then we can look for some Hm (H < Hm < H') with a validator
 set Vm.  Then we try to update H -> Hm and then Hm -> H' in two steps.  If one
 of these steps doesn't work, then we continue bisecting, until we eventually
-have to externally validate the valdiator set changes at every block.
+have to externally validate the validator set changes at every block.
 
 Since we never trust any server in this protocol, only the signatures
 themselves, it doesn't matter if the seed comes from a (possibly malicious)

mempool/mempool.go

@@ -108,6 +108,10 @@ func PostCheckMaxGas(maxGas int64) PostCheckFunc {
 		if maxGas == -1 {
 			return nil
 		}
+		if res.GasWanted < 0 {
+			return fmt.Errorf("gas wanted %d is negative",
+				res.GasWanted)
+		}
 		if res.GasWanted > maxGas {
 			return fmt.Errorf("gas wanted %d is greater than max gas %d",
 				res.GasWanted, maxGas)
@@ -131,7 +135,6 @@ type Mempool struct {
 	proxyMtx             sync.Mutex
 	proxyAppConn         proxy.AppConnMempool
 	txs                  *clist.CList    // concurrent linked-list of good txs
-	counter              int64           // simple incrementing counter
 	height               int64           // the last block Update()'d to
 	rechecking           int32           // for re-checking filtered txs on Update()
 	recheckCursor        *clist.CElement // next expected response
@@ -167,7 +170,6 @@ func NewMempool(
 		config:        config,
 		proxyAppConn:  proxyAppConn,
 		txs:           clist.New(),
-		counter:       0,
 		height:        height,
 		rechecking:    0,
 		recheckCursor: nil,
@@ -365,9 +367,7 @@ func (mem *Mempool) resCbNormal(req *abci.Request, res *abci.Response) {
 			postCheckErr = mem.postCheck(tx, r.CheckTx)
 		}
 		if (r.CheckTx.Code == abci.CodeTypeOK) && postCheckErr == nil {
-			mem.counter++
 			memTx := &mempoolTx{
-				counter:   mem.counter,
 				height:    mem.height,
 				gasWanted: r.CheckTx.GasWanted,
 				tx:        tx,
@@ -378,7 +378,6 @@ func (mem *Mempool) resCbNormal(req *abci.Request, res *abci.Response) {
 				"res", r,
 				"height", memTx.height,
 				"total", mem.Size(),
-				"counter", memTx.counter,
 			)
 			mem.metrics.TxSizeBytes.Observe(float64(len(tx)))
 			mem.notifyTxsAvailable()
@@ -491,11 +490,15 @@ func (mem *Mempool) ReapMaxBytesMaxGas(maxBytes, maxGas int64) types.Txs {
 			return txs
 		}
 		totalBytes += int64(len(memTx.tx)) + aminoOverhead
-		// Check total gas requirement
-		if maxGas > -1 && totalGas+memTx.gasWanted > maxGas {
+		// Check total gas requirement.
+		// If maxGas is negative, skip this check.
+		// Since newTotalGas < masGas, which
+		// must be non-negative, it follows that this won't overflow.
+		newTotalGas := totalGas + memTx.gasWanted
+		if maxGas > -1 && newTotalGas > maxGas {
 			return txs
 		}
-		totalGas += memTx.gasWanted
+		totalGas = newTotalGas
 		txs = append(txs, memTx.tx)
 	}
 	return txs
@@ -534,12 +537,6 @@ func (mem *Mempool) Update(
 	preCheck PreCheckFunc,
 	postCheck PostCheckFunc,
 ) error {
-	// First, create a lookup map of txns in new txs.
-	txsMap := make(map[string]struct{}, len(txs))
-	for _, tx := range txs {
-		txsMap[string(tx)] = struct{}{}
-	}
-
 	// Set height
 	mem.height = height
 	mem.notifiedTxsAvailable = false
@@ -551,15 +548,26 @@ func (mem *Mempool) Update(
 		mem.postCheck = postCheck
 	}
 
-	// Remove transactions that are already in txs.
-	goodTxs := mem.filterTxs(txsMap)
-	// Recheck mempool txs if any txs were committed in the block
-	if mem.config.Recheck && len(goodTxs) > 0 {
-		mem.logger.Info("Recheck txs", "numtxs", len(goodTxs), "height", height)
-		mem.recheckTxs(goodTxs)
-		// At this point, mem.txs are being rechecked.
-		// mem.recheckCursor re-scans mem.txs and possibly removes some txs.
-		// Before mem.Reap(), we should wait for mem.recheckCursor to be nil.
+	// Add committed transactions to cache (if missing).
+	for _, tx := range txs {
+		_ = mem.cache.Push(tx)
+	}
+
+	// Remove committed transactions.
+	txsLeft := mem.removeTxs(txs)
+
+	// Either recheck non-committed txs to see if they became invalid
+	// or just notify there're some txs left.
+	if len(txsLeft) > 0 {
+		if mem.config.Recheck {
+			mem.logger.Info("Recheck txs", "numtxs", len(txsLeft), "height", height)
+			mem.recheckTxs(txsLeft)
+			// At this point, mem.txs are being rechecked.
+			// mem.recheckCursor re-scans mem.txs and possibly removes some txs.
+			// Before mem.Reap(), we should wait for mem.recheckCursor to be nil.
+		} else {
+			mem.notifyTxsAvailable()
+		}
 	}
 
 	// Update metrics
@@ -568,12 +576,18 @@ func (mem *Mempool) Update(
 	return nil
 }
 
-func (mem *Mempool) filterTxs(blockTxsMap map[string]struct{}) []types.Tx {
-	goodTxs := make([]types.Tx, 0, mem.txs.Len())
+func (mem *Mempool) removeTxs(txs types.Txs) []types.Tx {
+	// Build a map for faster lookups.
+	txsMap := make(map[string]struct{}, len(txs))
+	for _, tx := range txs {
+		txsMap[string(tx)] = struct{}{}
+	}
+
+	txsLeft := make([]types.Tx, 0, mem.txs.Len())
 	for e := mem.txs.Front(); e != nil; e = e.Next() {
 		memTx := e.Value.(*mempoolTx)
-		// Remove the tx if it's alredy in a block.
-		if _, ok := blockTxsMap[string(memTx.tx)]; ok {
+		// Remove the tx if it's already in a block.
+		if _, ok := txsMap[string(memTx.tx)]; ok {
 			// remove from clist
 			mem.txs.Remove(e)
 			e.DetachPrev()
@@ -581,15 +595,14 @@ func (mem *Mempool) filterTxs(blockTxsMap map[string]struct{}) []types.Tx {
 			// NOTE: we don't remove committed txs from the cache.
 			continue
 		}
-		// Good tx!
-		goodTxs = append(goodTxs, memTx.tx)
+		txsLeft = append(txsLeft, memTx.tx)
 	}
-	return goodTxs
+	return txsLeft
 }
 
-// NOTE: pass in goodTxs because mem.txs can mutate concurrently.
-func (mem *Mempool) recheckTxs(goodTxs []types.Tx) {
-	if len(goodTxs) == 0 {
+// NOTE: pass in txs because mem.txs can mutate concurrently.
+func (mem *Mempool) recheckTxs(txs []types.Tx) {
+	if len(txs) == 0 {
 		return
 	}
 	atomic.StoreInt32(&mem.rechecking, 1)
@@ -598,7 +611,7 @@ func (mem *Mempool) recheckTxs(goodTxs []types.Tx) {
 
 	// Push txs to proxyAppConn
 	// NOTE: resCb() may be called concurrently.
-	for _, tx := range goodTxs {
+	for _, tx := range txs {
 		mem.proxyAppConn.CheckTxAsync(tx)
 	}
 	mem.proxyAppConn.FlushAsync()
@@ -608,7 +621,6 @@ func (mem *Mempool) recheckTxs(goodTxs []types.Tx) {
 
 // mempoolTx is a transaction that successfully ran
 type mempoolTx struct {
-	counter   int64    // a simple incrementing counter
 	height    int64    // height that this tx had been validated in
 	gasWanted int64    // amount of gas this tx states it will require
 	tx        types.Tx //

mempool/mempool_test.go

@@ -163,6 +163,17 @@ func TestMempoolFilters(t *testing.T) {
 	}
 }
 
+func TestMempoolUpdateAddsTxsToCache(t *testing.T) {
+	app := kvstore.NewKVStoreApplication()
+	cc := proxy.NewLocalClientCreator(app)
+	mempool := newMempoolWithApp(cc)
+	mempool.Update(1, []types.Tx{[]byte{0x01}}, nil, nil)
+	err := mempool.CheckTx([]byte{0x01}, nil)
+	if assert.Error(t, err) {
+		assert.Equal(t, ErrTxInCache, err)
+	}
+}
+
 func TestTxsAvailable(t *testing.T) {
 	app := kvstore.NewKVStoreApplication()
 	cc := proxy.NewLocalClientCreator(app)

node/node.go

@@ -3,7 +3,6 @@ package node
 import (
 	"bytes"
 	"context"
-	"errors"
 	"fmt"
 	"net"
 	"net/http"
@@ -11,11 +10,12 @@ import (
 	"strings"
 	"time"
 
+	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/rs/cors"
 
-	"github.com/tendermint/go-amino"
+	amino "github.com/tendermint/go-amino"
 	abci "github.com/tendermint/tendermint/abci/types"
 	bc "github.com/tendermint/tendermint/blockchain"
 	cfg "github.com/tendermint/tendermint/config"
@@ -210,35 +210,29 @@ func NewNode(config *cfg.Config,
 	// what happened during block replay).
 	state = sm.LoadState(stateDB)
 
-	// Ensure the state's block version matches that of the software.
+	// Log the version info.
+	logger.Info("Version info",
+		"software", version.TMCoreSemVer,
+		"block", version.BlockProtocol,
+		"p2p", version.P2PProtocol,
+	)
+
+	// If the state and software differ in block version, at least log it.
 	if state.Version.Consensus.Block != version.BlockProtocol {
-		return nil, fmt.Errorf(
-			"Block version of the software does not match that of the state.\n"+
-				"Got version.BlockProtocol=%v, state.Version.Consensus.Block=%v",
-			version.BlockProtocol,
-			state.Version.Consensus.Block,
+		logger.Info("Software and state have different block protocols",
+			"software", version.BlockProtocol,
+			"state", state.Version.Consensus.Block,
 		)
 	}
 
-	// If an address is provided, listen on the socket for a
-	// connection from an external signing process.
 	if config.PrivValidatorListenAddr != "" {
-		var (
-			// TODO: persist this key so external signer
-			// can actually authenticate us
-			privKey = ed25519.GenPrivKey()
-			pvsc    = privval.NewTCPVal(
-				logger.With("module", "privval"),
-				config.PrivValidatorListenAddr,
-				privKey,
-			)
-		)
-
-		if err := pvsc.Start(); err != nil {
-			return nil, fmt.Errorf("Error starting private validator client: %v", err)
+		// If an address is provided, listen on the socket for a connection from an
+		// external signing process.
+		// FIXME: we should start services inside OnStart
+		privValidator, err = createAndStartPrivValidatorSocketClient(config.PrivValidatorListenAddr, logger)
+		if err != nil {
+			return nil, errors.Wrap(err, "Error with private validator socket client")
 		}
-
-		privValidator = pvsc
 	}
 
 	// Decide whether to fast-sync or not
@@ -465,7 +459,7 @@ func NewNode(config *cfg.Config,
 				Seeds:    splitAndTrimEmpty(config.P2P.Seeds, ",", " "),
 				SeedMode: config.P2P.SeedMode,
 			})
-		pexReactor.SetLogger(p2pLogger)
+		pexReactor.SetLogger(logger.With("module", "pex"))
 		sw.AddReactor("PEX", pexReactor)
 	}
 
@@ -600,10 +594,8 @@ func (n *Node) OnStop() {
 		}
 	}
 
-	if pvsc, ok := n.privValidator.(*privval.TCPVal); ok {
-		if err := pvsc.Stop(); err != nil {
-			n.Logger.Error("Error stopping priv validator socket client", "err", err)
-		}
+	if pvsc, ok := n.privValidator.(cmn.Service); ok {
+		pvsc.Stop()
 	}
 
 	if n.prometheusSrv != nil {
@@ -857,6 +849,36 @@ func saveGenesisDoc(db dbm.DB, genDoc *types.GenesisDoc) {
 	db.SetSync(genesisDocKey, bytes)
 }
 
+func createAndStartPrivValidatorSocketClient(
+	listenAddr string,
+	logger log.Logger,
+) (types.PrivValidator, error) {
+	var pvsc types.PrivValidator
+
+	protocol, address := cmn.ProtocolAndAddress(listenAddr)
+	switch protocol {
+	case "unix":
+		pvsc = privval.NewIPCVal(logger.With("module", "privval"), address)
+	case "tcp":
+		// TODO: persist this key so external signer
+		// can actually authenticate us
+		pvsc = privval.NewTCPVal(logger.With("module", "privval"), listenAddr, ed25519.GenPrivKey())
+	default:
+		return nil, fmt.Errorf(
+			"Wrong listen address: expected either 'tcp' or 'unix' protocols, got %s",
+			protocol,
+		)
+	}
+
+	if pvsc, ok := pvsc.(cmn.Service); ok {
+		if err := pvsc.Start(); err != nil {
+			return nil, errors.Wrap(err, "failed to start")
+		}
+	}
+
+	return pvsc, nil
+}
+
 // splitAndTrimEmpty slices s into all subslices separated by sep and returns a
 // slice of the string s with all leading and trailing Unicode code points
 // contained in cutset removed. If sep is empty, SplitAndTrim splits after each

node/node_test.go

@@ -3,23 +3,26 @@ package node
 import (
 	"context"
 	"fmt"
+	"net"
 	"os"
 	"syscall"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/tendermint/tendermint/abci/example/kvstore"
+	cfg "github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/crypto/ed25519"
+	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/log"
 	"github.com/tendermint/tendermint/p2p"
+	"github.com/tendermint/tendermint/privval"
 	sm "github.com/tendermint/tendermint/state"
-	"github.com/tendermint/tendermint/version"
-
-	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/types"
-
 	tmtime "github.com/tendermint/tendermint/types/time"
+	"github.com/tendermint/tendermint/version"
 )
 
 func TestNodeStartStop(t *testing.T) {
@@ -27,17 +30,16 @@ func TestNodeStartStop(t *testing.T) {
 
 	// create & start node
 	n, err := DefaultNewNode(config, log.TestingLogger())
-	assert.NoError(t, err, "expected no err on DefaultNewNode")
-	err1 := n.Start()
-	if err1 != nil {
-		t.Error(err1)
-	}
+	require.NoError(t, err)
+	err = n.Start()
+	require.NoError(t, err)
+
 	t.Logf("Started node %v", n.sw.NodeInfo())
 
 	// wait for the node to produce a block
 	blockCh := make(chan interface{})
 	err = n.EventBus().Subscribe(context.Background(), "node_test", types.EventQueryNewBlock, blockCh)
-	assert.NoError(t, err)
+	require.NoError(t, err)
 	select {
 	case <-blockCh:
 	case <-time.After(10 * time.Second):
@@ -89,7 +91,7 @@ func TestNodeDelayedStop(t *testing.T) {
 	// create & start node
 	n, err := DefaultNewNode(config, log.TestingLogger())
 	n.GenesisDoc().GenesisTime = now.Add(5 * time.Second)
-	assert.NoError(t, err)
+	require.NoError(t, err)
 
 	n.Start()
 	startTime := tmtime.Now()
@@ -101,7 +103,7 @@ func TestNodeSetAppVersion(t *testing.T) {
 
 	// create & start node
 	n, err := DefaultNewNode(config, log.TestingLogger())
-	assert.NoError(t, err, "expected no err on DefaultNewNode")
+	require.NoError(t, err)
 
 	// default config uses the kvstore app
 	var appVersion version.Protocol = kvstore.ProtocolVersion
@@ -113,3 +115,80 @@ func TestNodeSetAppVersion(t *testing.T) {
 	// check version is set in node info
 	assert.Equal(t, n.nodeInfo.(p2p.DefaultNodeInfo).ProtocolVersion.App, appVersion)
 }
+
+func TestNodeSetPrivValTCP(t *testing.T) {
+	addr := "tcp://" + testFreeAddr(t)
+
+	config := cfg.ResetTestRoot("node_priv_val_tcp_test")
+	config.BaseConfig.PrivValidatorListenAddr = addr
+
+	rs := privval.NewRemoteSigner(
+		log.TestingLogger(),
+		config.ChainID(),
+		addr,
+		types.NewMockPV(),
+		ed25519.GenPrivKey(),
+	)
+	privval.RemoteSignerConnDeadline(5 * time.Millisecond)(rs)
+	go func() {
+		err := rs.Start()
+		if err != nil {
+			panic(err)
+		}
+	}()
+	defer rs.Stop()
+
+	n, err := DefaultNewNode(config, log.TestingLogger())
+	require.NoError(t, err)
+	assert.IsType(t, &privval.TCPVal{}, n.PrivValidator())
+}
+
+// address without a protocol must result in error
+func TestPrivValidatorListenAddrNoProtocol(t *testing.T) {
+	addrNoPrefix := testFreeAddr(t)
+
+	config := cfg.ResetTestRoot("node_priv_val_tcp_test")
+	config.BaseConfig.PrivValidatorListenAddr = addrNoPrefix
+
+	_, err := DefaultNewNode(config, log.TestingLogger())
+	assert.Error(t, err)
+}
+
+func TestNodeSetPrivValIPC(t *testing.T) {
+	tmpfile := "/tmp/kms." + cmn.RandStr(6) + ".sock"
+	defer os.Remove(tmpfile) // clean up
+
+	config := cfg.ResetTestRoot("node_priv_val_tcp_test")
+	config.BaseConfig.PrivValidatorListenAddr = "unix://" + tmpfile
+
+	rs := privval.NewIPCRemoteSigner(
+		log.TestingLogger(),
+		config.ChainID(),
+		tmpfile,
+		types.NewMockPV(),
+	)
+	privval.IPCRemoteSignerConnDeadline(3 * time.Second)(rs)
+
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		n, err := DefaultNewNode(config, log.TestingLogger())
+		require.NoError(t, err)
+		assert.IsType(t, &privval.IPCVal{}, n.PrivValidator())
+	}()
+
+	err := rs.Start()
+	require.NoError(t, err)
+	defer rs.Stop()
+
+	<-done
+}
+
+// testFreeAddr claims a free port so we don't block on listener being ready.
+func testFreeAddr(t *testing.T) string {
+	ln, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+	defer ln.Close()
+
+	return fmt.Sprintf("127.0.0.1:%d", ln.Addr().(*net.TCPAddr).Port)
+}

p2p/conn/connection.go

@@ -160,6 +160,7 @@ func NewMConnectionWithConfig(conn net.Conn, chDescs []*ChannelDescriptor, onRec
 		onReceive:     onReceive,
 		onError:       onError,
 		config:        config,
+		created:       time.Now(),
 	}
 
 	// Create channels

p2p/key.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"io/ioutil"
 
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	cmn "github.com/tendermint/tendermint/libs/common"
 )

p2p/metrics.go

@@ -62,7 +62,7 @@ func PrometheusMetrics(namespace string) *Metrics {
 // NopMetrics returns no-op Metrics.
 func NopMetrics() *Metrics {
 	return &Metrics{
-		Peers:                 discard.NewGauge(),
+		Peers: discard.NewGauge(),
 		PeerReceiveBytesTotal: discard.NewCounter(),
 		PeerSendBytesTotal:    discard.NewCounter(),
 		PeerPendingSendBytes:  discard.NewGauge(),

p2p/node_info.go

@@ -230,3 +230,31 @@ func (info DefaultNodeInfo) NetAddress() *NetAddress {
 	}
 	return netAddr
 }
+
+//-----------------------------------------------------------
+// These methods are for Protobuf Compatibility
+
+// Size returns the size of the amino encoding, in bytes.
+func (info *DefaultNodeInfo) Size() int {
+	bs, _ := info.Marshal()
+	return len(bs)
+}
+
+// Marshal returns the amino encoding.
+func (info *DefaultNodeInfo) Marshal() ([]byte, error) {
+	return cdc.MarshalBinaryBare(info)
+}
+
+// MarshalTo calls Marshal and copies to the given buffer.
+func (info *DefaultNodeInfo) MarshalTo(data []byte) (int, error) {
+	bs, err := info.Marshal()
+	if err != nil {
+		return -1, err
+	}
+	return copy(data, bs), nil
+}
+
+// Unmarshal deserializes from amino encoded form.
+func (info *DefaultNodeInfo) Unmarshal(bs []byte) error {
+	return cdc.UnmarshalBinaryBare(bs, info)
+}

p2p/peer_set.go

@@ -98,13 +98,15 @@ func (ps *PeerSet) Get(peerKey ID) Peer {
 }
 
 // Remove discards peer by its Key, if the peer was previously memoized.
-func (ps *PeerSet) Remove(peer Peer) {
+// Returns true if the peer was removed, and false if it was not found.
+// in the set.
+func (ps *PeerSet) Remove(peer Peer) bool {
 	ps.mtx.Lock()
 	defer ps.mtx.Unlock()
 
 	item := ps.lookup[peer.ID()]
 	if item == nil {
-		return
+		return false
 	}
 
 	index := item.index
@@ -116,7 +118,7 @@ func (ps *PeerSet) Remove(peer Peer) {
 	if index == len(ps.list)-1 {
 		ps.list = newList
 		delete(ps.lookup, peer.ID())
-		return
+		return true
 	}
 
 	// Replace the popped item with the last item in the old list.
@@ -127,6 +129,7 @@ func (ps *PeerSet) Remove(peer Peer) {
 	lastPeerItem.index = index
 	ps.list = newList
 	delete(ps.lookup, peer.ID())
+	return true
 }
 
 // Size returns the number of unique items in the peerSet.

p2p/peer_set_test.go

@@ -60,13 +60,15 @@ func TestPeerSetAddRemoveOne(t *testing.T) {
 	n := len(peerList)
 	// 1. Test removing from the front
 	for i, peerAtFront := range peerList {
-		peerSet.Remove(peerAtFront)
+		removed := peerSet.Remove(peerAtFront)
+		assert.True(t, removed)
 		wantSize := n - i - 1
 		for j := 0; j < 2; j++ {
 			assert.Equal(t, false, peerSet.Has(peerAtFront.ID()), "#%d Run #%d: failed to remove peer", i, j)
 			assert.Equal(t, wantSize, peerSet.Size(), "#%d Run #%d: failed to remove peer and decrement size", i, j)
 			// Test the route of removing the now non-existent element
-			peerSet.Remove(peerAtFront)
+			removed := peerSet.Remove(peerAtFront)
+			assert.False(t, removed)
 		}
 	}
 
@@ -81,7 +83,8 @@ func TestPeerSetAddRemoveOne(t *testing.T) {
 	// b) In reverse, remove each element
 	for i := n - 1; i >= 0; i-- {
 		peerAtEnd := peerList[i]
-		peerSet.Remove(peerAtEnd)
+		removed := peerSet.Remove(peerAtEnd)
+		assert.True(t, removed)
 		assert.Equal(t, false, peerSet.Has(peerAtEnd.ID()), "#%d: failed to remove item at end", i)
 		assert.Equal(t, i, peerSet.Size(), "#%d: differing sizes after peerSet.Remove(atEndPeer)", i)
 	}
@@ -105,7 +108,8 @@ func TestPeerSetAddRemoveMany(t *testing.T) {
 	}
 
 	for i, peer := range peers {
-		peerSet.Remove(peer)
+		removed := peerSet.Remove(peer)
+		assert.True(t, removed)
 		if peerSet.Has(peer.ID()) {
 			t.Errorf("Failed to remove peer")
 		}

p2p/peer_test.go

@@ -10,7 +10,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/log"

p2p/pex/addrbook.go

@@ -13,7 +13,7 @@ import (
 	"sync"
 	"time"
 
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/p2p"
 )

p2p/pex/pex_reactor_test.go

@@ -12,7 +12,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/log"

p2p/switch.go

@@ -211,7 +211,9 @@ func (sw *Switch) OnStop() {
 	// Stop peers
 	for _, p := range sw.peers.List() {
 		p.Stop()
-		sw.peers.Remove(p)
+		if sw.peers.Remove(p) {
+			sw.metrics.Peers.Add(float64(-1))
+		}
 	}
 
 	// Stop reactors
@@ -299,8 +301,9 @@ func (sw *Switch) StopPeerGracefully(peer Peer) {
 }
 
 func (sw *Switch) stopAndRemovePeer(peer Peer, reason interface{}) {
-	sw.peers.Remove(peer)
-	sw.metrics.Peers.Add(float64(-1))
+	if sw.peers.Remove(peer) {
+		sw.metrics.Peers.Add(float64(-1))
+	}
 	peer.Stop()
 	for _, reactor := range sw.reactors {
 		reactor.RemovePeer(peer, reason)
@@ -505,6 +508,12 @@ func (sw *Switch) acceptRoutine() {
 					"err", err,
 					"numPeers", sw.peers.Size(),
 				)
+				// We could instead have a retry loop around the acceptRoutine,
+				// but that would need to stop and let the node shutdown eventually.
+				// So might as well panic and let process managers restart the node.
+				// There's no point in letting the node run without the acceptRoutine,
+				// since it won't be able to accept new connections.
+				panic(fmt.Errorf("accept routine exited: %v", err))
 			}
 
 			break

p2p/switch_test.go

@@ -3,10 +3,17 @@ package p2p
 import (
 	"bytes"
 	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"strconv"
 	"sync"
 	"testing"
 	"time"
 
+	stdprometheus "github.com/prometheus/client_golang/prometheus"
+
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
@@ -335,6 +342,54 @@ func TestSwitchStopsNonPersistentPeerOnError(t *testing.T) {
 	assert.False(p.IsRunning())
 }
 
+func TestSwitchStopPeerForError(t *testing.T) {
+	s := httptest.NewServer(stdprometheus.UninstrumentedHandler())
+	defer s.Close()
+
+	scrapeMetrics := func() string {
+		resp, _ := http.Get(s.URL)
+		buf, _ := ioutil.ReadAll(resp.Body)
+		return string(buf)
+	}
+
+	namespace, subsystem, name := config.TestInstrumentationConfig().Namespace, MetricsSubsystem, "peers"
+	re := regexp.MustCompile(namespace + `_` + subsystem + `_` + name + ` ([0-9\.]+)`)
+	peersMetricValue := func() float64 {
+		matches := re.FindStringSubmatch(scrapeMetrics())
+		f, _ := strconv.ParseFloat(matches[1], 64)
+		return f
+	}
+
+	p2pMetrics := PrometheusMetrics(namespace)
+
+	// make two connected switches
+	sw1, sw2 := MakeSwitchPair(t, func(i int, sw *Switch) *Switch {
+		// set metrics on sw1
+		if i == 0 {
+			opt := WithMetrics(p2pMetrics)
+			opt(sw)
+		}
+		return initSwitchFunc(i, sw)
+	})
+
+	assert.Equal(t, len(sw1.Peers().List()), 1)
+	assert.EqualValues(t, 1, peersMetricValue())
+
+	// send messages to the peer from sw1
+	p := sw1.Peers().List()[0]
+	p.Send(0x1, []byte("here's a message to send"))
+
+	// stop sw2. this should cause the p to fail,
+	// which results in calling StopPeerForError internally
+	sw2.Stop()
+
+	// now call StopPeerForError explicitly, eg. from a reactor
+	sw1.StopPeerForError(p, fmt.Errorf("some err"))
+
+	assert.Equal(t, len(sw1.Peers().List()), 0)
+	assert.EqualValues(t, 0, peersMetricValue())
+}
+
 func TestSwitchReconnectsToPersistentPeer(t *testing.T) {
 	assert, require := assert.New(t), require.New(t)
 

p2p/test_util.go

@@ -5,7 +5,7 @@ import (
 	"net"
 	"time"
 
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/ed25519"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/libs/log"
@@ -184,7 +184,7 @@ func MakeSwitch(
 
 	// TODO: let the config be passed in?
 	sw := initSwitch(i, NewSwitch(cfg, t, opts...))
-	sw.SetLogger(log.TestingLogger())
+	sw.SetLogger(log.TestingLogger().With("switch", i))
 	sw.SetNodeKey(&nodeKey)
 
 	ni := nodeInfo.(DefaultNodeInfo)

privval/ipc_server.go

@@ -69,6 +69,7 @@ func (rs *IPCRemoteSigner) OnStart() error {
 		for {
 			conn, err := rs.listener.AcceptUnix()
 			if err != nil {
+				rs.Logger.Error("AcceptUnix", "err", err)
 				return
 			}
 			go rs.handleConnection(conn)

privval/priv_validator.go

@@ -290,19 +290,6 @@ func (pv *FilePV) saveSigned(height int64, round int, step int8,
 	pv.save()
 }
 
-// SignHeartbeat signs a canonical representation of the heartbeat, along with the chainID.
-// Implements PrivValidator.
-func (pv *FilePV) SignHeartbeat(chainID string, heartbeat *types.Heartbeat) error {
-	pv.mtx.Lock()
-	defer pv.mtx.Unlock()
-	sig, err := pv.PrivKey.Sign(heartbeat.SignBytes(chainID))
-	if err != nil {
-		return err
-	}
-	heartbeat.Signature = sig
-	return nil
-}
-
 // String returns a string representation of the FilePV.
 func (pv *FilePV) String() string {
 	return fmt.Sprintf("PrivValidator{%v LH:%v, LR:%v, LS:%v}", pv.GetAddress(), pv.LastHeight, pv.LastRound, pv.LastStep)

privval/remote_signer.go

@@ -125,35 +125,6 @@ func (sc *RemoteSignerClient) SignProposal(
 	return nil
 }
 
-// SignHeartbeat implements PrivValidator.
-func (sc *RemoteSignerClient) SignHeartbeat(
-	chainID string,
-	heartbeat *types.Heartbeat,
-) error {
-	sc.lock.Lock()
-	defer sc.lock.Unlock()
-
-	err := writeMsg(sc.conn, &SignHeartbeatRequest{Heartbeat: heartbeat})
-	if err != nil {
-		return err
-	}
-
-	res, err := readMsg(sc.conn)
-	if err != nil {
-		return err
-	}
-	resp, ok := res.(*SignedHeartbeatResponse)
-	if !ok {
-		return ErrUnexpectedResponse
-	}
-	if resp.Error != nil {
-		return resp.Error
-	}
-	*heartbeat = *resp.Heartbeat
-
-	return nil
-}
-
 // Ping is used to check connection health.
 func (sc *RemoteSignerClient) Ping() error {
 	sc.lock.Lock()
@@ -186,8 +157,6 @@ func RegisterRemoteSignerMsg(cdc *amino.Codec) {
 	cdc.RegisterConcrete(&SignedVoteResponse{}, "tendermint/remotesigner/SignedVoteResponse", nil)
 	cdc.RegisterConcrete(&SignProposalRequest{}, "tendermint/remotesigner/SignProposalRequest", nil)
 	cdc.RegisterConcrete(&SignedProposalResponse{}, "tendermint/remotesigner/SignedProposalResponse", nil)
-	cdc.RegisterConcrete(&SignHeartbeatRequest{}, "tendermint/remotesigner/SignHeartbeatRequest", nil)
-	cdc.RegisterConcrete(&SignedHeartbeatResponse{}, "tendermint/remotesigner/SignedHeartbeatResponse", nil)
 	cdc.RegisterConcrete(&PingRequest{}, "tendermint/remotesigner/PingRequest", nil)
 	cdc.RegisterConcrete(&PingResponse{}, "tendermint/remotesigner/PingResponse", nil)
 }
@@ -218,16 +187,6 @@ type SignedProposalResponse struct {
 	Error    *RemoteSignerError
 }
 
-// SignHeartbeatRequest is a PrivValidatorSocket message containing a Heartbeat.
-type SignHeartbeatRequest struct {
-	Heartbeat *types.Heartbeat
-}
-
-type SignedHeartbeatResponse struct {
-	Heartbeat *types.Heartbeat
-	Error     *RemoteSignerError
-}
-
 // PingRequest is a PrivValidatorSocket message to keep the connection alive.
 type PingRequest struct {
 }
@@ -286,13 +245,6 @@ func handleRequest(req RemoteSignerMsg, chainID string, privVal types.PrivValida
 		} else {
 			res = &SignedProposalResponse{r.Proposal, nil}
 		}
-	case *SignHeartbeatRequest:
-		err = privVal.SignHeartbeat(chainID, r.Heartbeat)
-		if err != nil {
-			res = &SignedHeartbeatResponse{nil, &RemoteSignerError{0, err.Error()}}
-		} else {
-			res = &SignedHeartbeatResponse{r.Heartbeat, nil}
-		}
 	case *PingRequest:
 		res = &PingResponse{}
 	default:

privval/tcp_test.go

@@ -137,22 +137,6 @@ func TestSocketPVVoteKeepalive(t *testing.T) {
 	assert.Equal(t, want.Signature, have.Signature)
 }
 
-func TestSocketPVHeartbeat(t *testing.T) {
-	var (
-		chainID = cmn.RandStr(12)
-		sc, rs  = testSetupSocketPair(t, chainID, types.NewMockPV())
-
-		want = &types.Heartbeat{}
-		have = &types.Heartbeat{}
-	)
-	defer sc.Stop()
-	defer rs.Stop()
-
-	require.NoError(t, rs.privVal.SignHeartbeat(chainID, want))
-	require.NoError(t, sc.SignHeartbeat(chainID, have))
-	assert.Equal(t, want.Signature, have.Signature)
-}
-
 func TestSocketPVDeadline(t *testing.T) {
 	var (
 		addr    = testFreeAddr(t)
@@ -301,32 +285,6 @@ func TestRemoteSignProposalErrors(t *testing.T) {
 	require.Error(t, err)
 }
 
-func TestRemoteSignHeartbeatErrors(t *testing.T) {
-	var (
-		chainID = cmn.RandStr(12)
-		sc, rs  = testSetupSocketPair(t, chainID, types.NewErroringMockPV())
-		hb      = &types.Heartbeat{}
-	)
-	defer sc.Stop()
-	defer rs.Stop()
-
-	err := writeMsg(sc.conn, &SignHeartbeatRequest{Heartbeat: hb})
-	require.NoError(t, err)
-
-	res, err := readMsg(sc.conn)
-	require.NoError(t, err)
-
-	resp := *res.(*SignedHeartbeatResponse)
-	require.NotNil(t, resp.Error)
-	require.Equal(t, resp.Error.Description, types.ErroringMockPVErr.Error())
-
-	err = rs.privVal.SignHeartbeat(chainID, hb)
-	require.Error(t, err)
-
-	err = sc.SignHeartbeat(chainID, hb)
-	require.Error(t, err)
-}
-
 func TestErrUnexpectedResponse(t *testing.T) {
 	var (
 		addr    = testFreeAddr(t)
@@ -362,22 +320,12 @@ func TestErrUnexpectedResponse(t *testing.T) {
 	require.NotNil(t, rsConn)
 	<-readyc
 
-	// Heartbeat:
-	go func(errc chan error) {
-		errc <- sc.SignHeartbeat(chainID, &types.Heartbeat{})
-	}(errc)
-	// read request and write wrong response:
-	go testReadWriteResponse(t, &SignedVoteResponse{}, rsConn)
-	err = <-errc
-	require.Error(t, err)
-	require.Equal(t, err, ErrUnexpectedResponse)
-
 	// Proposal:
 	go func(errc chan error) {
 		errc <- sc.SignProposal(chainID, &types.Proposal{})
 	}(errc)
 	// read request and write wrong response:
-	go testReadWriteResponse(t, &SignedHeartbeatResponse{}, rsConn)
+	go testReadWriteResponse(t, &SignedVoteResponse{}, rsConn)
 	err = <-errc
 	require.Error(t, err)
 	require.Equal(t, err, ErrUnexpectedResponse)
@@ -387,7 +335,7 @@ func TestErrUnexpectedResponse(t *testing.T) {
 		errc <- sc.SignVote(chainID, &types.Vote{})
 	}(errc)
 	// read request and write wrong response:
-	go testReadWriteResponse(t, &SignedHeartbeatResponse{}, rsConn)
+	go testReadWriteResponse(t, &SignedProposalResponse{}, rsConn)
 	err = <-errc
 	require.Error(t, err)
 	require.Equal(t, err, ErrUnexpectedResponse)

rpc/client/httpclient.go

@@ -109,6 +109,24 @@ func (c *HTTP) broadcastTX(route string, tx types.Tx) (*ctypes.ResultBroadcastTx
 	return result, nil
 }
 
+func (c *HTTP) UnconfirmedTxs(limit int) (*ctypes.ResultUnconfirmedTxs, error) {
+	result := new(ctypes.ResultUnconfirmedTxs)
+	_, err := c.rpc.Call("unconfirmed_txs", map[string]interface{}{"limit": limit}, result)
+	if err != nil {
+		return nil, errors.Wrap(err, "unconfirmed_txs")
+	}
+	return result, nil
+}
+
+func (c *HTTP) NumUnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error) {
+	result := new(ctypes.ResultUnconfirmedTxs)
+	_, err := c.rpc.Call("num_unconfirmed_txs", map[string]interface{}{}, result)
+	if err != nil {
+		return nil, errors.Wrap(err, "num_unconfirmed_txs")
+	}
+	return result, nil
+}
+
 func (c *HTTP) NetInfo() (*ctypes.ResultNetInfo, error) {
 	result := new(ctypes.ResultNetInfo)
 	_, err := c.rpc.Call("net_info", map[string]interface{}{}, result)

rpc/client/interface.go

@@ -93,3 +93,9 @@ type NetworkClient interface {
 type EventsClient interface {
 	types.EventBusSubscriber
 }
+
+// MempoolClient shows us data about current mempool state.
+type MempoolClient interface {
+	UnconfirmedTxs(limit int) (*ctypes.ResultUnconfirmedTxs, error)
+	NumUnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error)
+}

rpc/client/localclient.go

@@ -76,6 +76,14 @@ func (Local) BroadcastTxSync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
 	return core.BroadcastTxSync(tx)
 }
 
+func (Local) UnconfirmedTxs(limit int) (*ctypes.ResultUnconfirmedTxs, error) {
+	return core.UnconfirmedTxs(limit)
+}
+
+func (Local) NumUnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error) {
+	return core.NumUnconfirmedTxs()
+}
+
 func (Local) NetInfo() (*ctypes.ResultNetInfo, error) {
 	return core.NetInfo()
 }

rpc/client/rpc_test.go

@@ -281,6 +281,42 @@ func TestBroadcastTxCommit(t *testing.T) {
 	}
 }
 
+func TestUnconfirmedTxs(t *testing.T) {
+	_, _, tx := MakeTxKV()
+
+	mempool := node.MempoolReactor().Mempool
+	_ = mempool.CheckTx(tx, nil)
+
+	for i, c := range GetClients() {
+		mc, ok := c.(client.MempoolClient)
+		require.True(t, ok, "%d", i)
+		txs, err := mc.UnconfirmedTxs(1)
+		require.Nil(t, err, "%d: %+v", i, err)
+		assert.Exactly(t, types.Txs{tx}, types.Txs(txs.Txs))
+	}
+
+	mempool.Flush()
+}
+
+func TestNumUnconfirmedTxs(t *testing.T) {
+	_, _, tx := MakeTxKV()
+
+	mempool := node.MempoolReactor().Mempool
+	_ = mempool.CheckTx(tx, nil)
+	mempoolSize := mempool.Size()
+
+	for i, c := range GetClients() {
+		mc, ok := c.(client.MempoolClient)
+		require.True(t, ok, "%d", i)
+		res, err := mc.NumUnconfirmedTxs()
+		require.Nil(t, err, "%d: %+v", i, err)
+
+		assert.Equal(t, mempoolSize, res.N)
+	}
+
+	mempool.Flush()
+}
+
 func TestTx(t *testing.T) {
 	// first we broadcast a tx
 	c := getHTTPClient()
@@ -370,20 +406,27 @@ func TestTxSearch(t *testing.T) {
 		}
 
 		// query by height
-		result, err = c.TxSearch(fmt.Sprintf("tx.height >= %d", txHeight), true, 1, 30)
+		result, err = c.TxSearch(fmt.Sprintf("tx.height=%d", txHeight), true, 1, 30)
 		require.Nil(t, err, "%+v", err)
 		require.Len(t, result.Txs, 1)
 
-		// we query for non existing tx
+		// query for non existing tx
 		result, err = c.TxSearch(fmt.Sprintf("tx.hash='%X'", anotherTxHash), false, 1, 30)
 		require.Nil(t, err, "%+v", err)
 		require.Len(t, result.Txs, 0)
 
-		// we query using a tag (see kvstore application)
+		// query using a tag (see kvstore application)
 		result, err = c.TxSearch("app.creator='Cosmoshi Netowoko'", false, 1, 30)
 		require.Nil(t, err, "%+v", err)
 		if len(result.Txs) == 0 {
 			t.Fatal("expected a lot of transactions")
 		}
+
+		// query using a tag (see kvstore application) and height
+		result, err = c.TxSearch("app.creator='Cosmoshi Netowoko' AND tx.height<10000", true, 1, 30)
+		require.Nil(t, err, "%+v", err)
+		if len(result.Txs) == 0 {
+			t.Fatal("expected a lot of transactions")
+		}
 	}
 }

rpc/core/abci.go

@@ -15,6 +15,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.ABCIQuery("", "abcd", true)
 // ```
 //
@@ -69,6 +74,11 @@ func ABCIQuery(path string, data cmn.HexBytes, height int64, prove bool) (*ctype
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.ABCIInfo()
 // ```
 //

rpc/core/blocks.go

@@ -18,6 +18,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.BlockchainInfo(10, 10)
 // ```
 //
@@ -123,6 +128,11 @@ func filterMinMax(height, min, max, limit int64) (int64, int64, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.Block(10)
 // ```
 //
@@ -235,6 +245,11 @@ func Block(heightPtr *int64) (*ctypes.ResultBlock, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.Commit(11)
 // ```
 //
@@ -329,6 +344,11 @@ func Commit(heightPtr *int64) (*ctypes.ResultCommit, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.BlockResults(10)
 // ```
 //

rpc/core/consensus.go

@@ -16,6 +16,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // state, err := client.Validators()
 // ```
 //
@@ -27,7 +32,7 @@ import (
 // 	"result": {
 // 		"validators": [
 // 			{
-// 				"accum": "0",
+// 				"proposer_priority": "0",
 // 				"voting_power": "10",
 // 				"pub_key": {
 // 					"data": "68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D",
@@ -67,6 +72,11 @@ func Validators(heightPtr *int64) (*ctypes.ResultValidators, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // state, err := client.DumpConsensusState()
 // ```
 //
@@ -92,7 +102,7 @@ func Validators(heightPtr *int64) (*ctypes.ResultValidators, error) {
 //               "value": "SBctdhRBcXtBgdI/8a/alTsUhGXqGs9k5ylV1u5iKHg="
 //             },
 //             "voting_power": "10",
-//             "accum": "0"
+//             "proposer_priority": "0"
 //           }
 //         ],
 //         "proposer": {
@@ -102,7 +112,7 @@ func Validators(heightPtr *int64) (*ctypes.ResultValidators, error) {
 //             "value": "SBctdhRBcXtBgdI/8a/alTsUhGXqGs9k5ylV1u5iKHg="
 //           },
 //           "voting_power": "10",
-//           "accum": "0"
+//           "proposer_priority": "0"
 //         }
 //       },
 //       "proposal": null,
@@ -138,7 +148,7 @@ func Validators(heightPtr *int64) (*ctypes.ResultValidators, error) {
 //               "value": "SBctdhRBcXtBgdI/8a/alTsUhGXqGs9k5ylV1u5iKHg="
 //             },
 //             "voting_power": "10",
-//             "accum": "0"
+//             "proposer_priority": "0"
 //           }
 //         ],
 //         "proposer": {
@@ -148,7 +158,7 @@ func Validators(heightPtr *int64) (*ctypes.ResultValidators, error) {
 //             "value": "SBctdhRBcXtBgdI/8a/alTsUhGXqGs9k5ylV1u5iKHg="
 //           },
 //           "voting_power": "10",
-//           "accum": "0"
+//           "proposer_priority": "0"
 //         }
 //       }
 //     },
@@ -225,6 +235,11 @@ func DumpConsensusState() (*ctypes.ResultDumpConsensusState, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // state, err := client.ConsensusState()
 // ```
 //
@@ -273,6 +288,11 @@ func ConsensusState() (*ctypes.ResultConsensusState, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // state, err := client.ConsensusParams()
 // ```
 //

rpc/core/events.go

@@ -2,6 +2,7 @@ package core
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/pkg/errors"
 
@@ -53,11 +54,16 @@ import (
 // import "github.com/tendermint/tendermint/types"
 //
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // ctx, cancel := context.WithTimeout(context.Background(), timeout)
 // defer cancel()
 // query := query.MustParse("tm.event = 'Tx' AND tx.height = 3")
 // txs := make(chan interface{})
-// err := client.Subscribe(ctx, "test-client", query, txs)
+// err = client.Subscribe(ctx, "test-client", query, txs)
 //
 // go func() {
 //   for e := range txs {
@@ -104,7 +110,7 @@ func Subscribe(wsCtx rpctypes.WSRPCContext, query string) (*ctypes.ResultSubscri
 	go func() {
 		for event := range ch {
 			tmResult := &ctypes.ResultEvent{query, event.(tmtypes.TMEventData)}
-			wsCtx.TryWriteRPCResponse(rpctypes.NewRPCSuccessResponse(wsCtx.Codec(), wsCtx.Request.ID+"#event", tmResult))
+			wsCtx.TryWriteRPCResponse(rpctypes.NewRPCSuccessResponse(wsCtx.Codec(), rpctypes.JSONRPCStringID(fmt.Sprintf("%v#event", wsCtx.Request.ID)), tmResult))
 		}
 	}()
 
@@ -115,7 +121,12 @@ func Subscribe(wsCtx rpctypes.WSRPCContext, query string) (*ctypes.ResultSubscri
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
-// err := client.Unsubscribe("test-client", query)
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
+// err = client.Unsubscribe("test-client", query)
 // ```
 //
 // > The above command returns JSON structured like this:
@@ -154,7 +165,12 @@ func Unsubscribe(wsCtx rpctypes.WSRPCContext, query string) (*ctypes.ResultUnsub
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
-// err := client.UnsubscribeAll("test-client")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
+// err = client.UnsubscribeAll("test-client")
 // ```
 //
 // > The above command returns JSON structured like this:

rpc/core/health.go

@@ -13,6 +13,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.Health()
 // ```
 //

rpc/core/mempool.go

@@ -24,6 +24,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.BroadcastTxAsync("123")
 // ```
 //
@@ -64,6 +69,11 @@ func BroadcastTxAsync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.BroadcastTxSync("456")
 // ```
 //
@@ -118,6 +128,11 @@ func BroadcastTxSync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.BroadcastTxCommit("789")
 // ```
 //
@@ -198,7 +213,10 @@ func BroadcastTxCommit(tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
 	// TODO: configurable?
 	var deliverTxTimeout = rpcserver.WriteTimeout / 2
 	select {
-	case deliverTxResMsg := <-deliverTxResCh: // The tx was included in a block.
+	case deliverTxResMsg, ok := <-deliverTxResCh: // The tx was included in a block.
+		if !ok {
+			return nil, errors.New("Error on broadcastTxCommit: expected DeliverTxResult, got nil. Did the Tendermint stop?")
+		}
 		deliverTxRes := deliverTxResMsg.(types.EventDataTx)
 		return &ctypes.ResultBroadcastTxCommit{
 			CheckTx:   *checkTxRes,
@@ -225,6 +243,11 @@ func BroadcastTxCommit(tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.UnconfirmedTxs()
 // ```
 //
@@ -263,6 +286,11 @@ func UnconfirmedTxs(limit int) (*ctypes.ResultUnconfirmedTxs, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.UnconfirmedTxs()
 // ```
 //

rpc/core/net.go

@@ -17,6 +17,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // info, err := client.NetInfo()
 // ```
 //
@@ -95,6 +100,11 @@ func UnsafeDialPeers(peers []string, persistent bool) (*ctypes.ResultDialPeers,
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // genesis, err := client.Genesis()
 // ```
 //

rpc/core/pipe.go

@@ -2,7 +2,7 @@ package core
 
 import (
 	"github.com/tendermint/tendermint/consensus"
-	crypto "github.com/tendermint/tendermint/crypto"
+	"github.com/tendermint/tendermint/crypto"
 	dbm "github.com/tendermint/tendermint/libs/db"
 	"github.com/tendermint/tendermint/libs/log"
 	mempl "github.com/tendermint/tendermint/mempool"

rpc/core/status.go

@@ -20,6 +20,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // result, err := client.Status()
 // ```
 //

rpc/core/tx.go

@@ -21,6 +21,11 @@ import (
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // tx, err := client.Tx([]byte("2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF"), true)
 // ```
 //
@@ -115,6 +120,11 @@ func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
 //
 // ```go
 // client := client.NewHTTP("tcp://0.0.0.0:26657", "/websocket")
+// err := client.Start()
+// if err != nil {
+//   // handle error
+// }
+// defer client.Stop()
 // q, err := tmquery.New("account.owner='Ivan'")
 // tx, err := client.TxSearch(q, true)
 // ```