abci: Refactor CheckTx to notify of recheck (#3744)

As per #2127, this refactors the RequestCheckTx ProtoBuf struct to allow for a flag indicating whether a query is a recheck or not (and allows for possible future, more nuanced states).

In order to pass this extended information through to the ABCI app, the proxy.AppConnMempool (and, for consistency, the proxy.AppConnConsensus) interface seems to need to be refactored along with abcicli.Client.

And, as per this comment, I've made the following modification to the protobuf definition for the RequestCheckTx structure:

enum CheckTxType {
  New = 0;
  Recheck = 1;
}

message RequestCheckTx {
  bytes tx = 1;
  CheckTxType type = 2;
}

* Refactor ABCI CheckTx to notify of recheck

As per #2127, this refactors the `RequestCheckTx` ProtoBuf struct to allow for:

1. a flag indicating whether a query is a recheck or not (and allows for
   possible future, more nuanced states)
2. an `additional_data` bytes array to provide information for those more
   nuanced states.

In order to pass this extended information through to the ABCI app, the
`proxy.AppConnMempool` (and, for consistency, the
`proxy.AppConnConsensus`) interface seems to need to be refactored.

Commits:

* Fix linting issue

* Add CHANGELOG_PENDING entry

* Remove extraneous explicit initialization

* Update ABCI spec doc to include new CheckTx params

* Rename method param for consistency

* Rename CheckTxType enum values and remove additional_data param

CHANGELOG_PENDING.md

@@ -14,9 +14,13 @@ program](https://hackerone.com/tendermint).
 * Apps
 
 * Go API
+  - [abci] \#2127 ABCI / mempool: Add a "Recheck Tx" indicator. Breaks the ABCI
+    client interface (`abcicli.Client`) to allow for supplying the ABCI
+    `types.RequestCheckTx` and `types.RequestDeliverTx` structs, and lets the
+    mempool indicate to the ABCI app whether a CheckTx request is a recheck or
+    not.
   - [libs] Remove unused `db/debugDB` and `common/colors.go` & `errors/errors.go` files (@marbar3778)
 
-
 * Blockchain Protocol
 
 * P2P Protocol

abci/client/client.go

@@ -28,8 +28,8 @@ type Client interface {
 	EchoAsync(msg string) *ReqRes
 	InfoAsync(types.RequestInfo) *ReqRes
 	SetOptionAsync(types.RequestSetOption) *ReqRes
-	DeliverTxAsync(tx []byte) *ReqRes
-	CheckTxAsync(tx []byte) *ReqRes
+	DeliverTxAsync(types.RequestDeliverTx) *ReqRes
+	CheckTxAsync(types.RequestCheckTx) *ReqRes
 	QueryAsync(types.RequestQuery) *ReqRes
 	CommitAsync() *ReqRes
 	InitChainAsync(types.RequestInitChain) *ReqRes
@@ -40,8 +40,8 @@ type Client interface {
 	EchoSync(msg string) (*types.ResponseEcho, error)
 	InfoSync(types.RequestInfo) (*types.ResponseInfo, error)
 	SetOptionSync(types.RequestSetOption) (*types.ResponseSetOption, error)
-	DeliverTxSync(tx []byte) (*types.ResponseDeliverTx, error)
-	CheckTxSync(tx []byte) (*types.ResponseCheckTx, error)
+	DeliverTxSync(types.RequestDeliverTx) (*types.ResponseDeliverTx, error)
+	CheckTxSync(types.RequestCheckTx) (*types.ResponseCheckTx, error)
 	QuerySync(types.RequestQuery) (*types.ResponseQuery, error)
 	CommitSync() (*types.ResponseCommit, error)
 	InitChainSync(types.RequestInitChain) (*types.ResponseInitChain, error)

abci/client/grpc_client.go

@@ -159,8 +159,8 @@ func (cli *grpcClient) SetOptionAsync(params types.RequestSetOption) *ReqRes {
 	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_SetOption{SetOption: res}})
 }
 
-func (cli *grpcClient) DeliverTxAsync(tx []byte) *ReqRes {
-	req := types.ToRequestDeliverTx(tx)
+func (cli *grpcClient) DeliverTxAsync(params types.RequestDeliverTx) *ReqRes {
+	req := types.ToRequestDeliverTx(params)
 	res, err := cli.client.DeliverTx(context.Background(), req.GetDeliverTx(), grpc.FailFast(true))
 	if err != nil {
 		cli.StopForError(err)
@@ -168,8 +168,8 @@ func (cli *grpcClient) DeliverTxAsync(tx []byte) *ReqRes {
 	return cli.finishAsyncCall(req, &types.Response{Value: &types.Response_DeliverTx{DeliverTx: res}})
 }
 
-func (cli *grpcClient) CheckTxAsync(tx []byte) *ReqRes {
-	req := types.ToRequestCheckTx(tx)
+func (cli *grpcClient) CheckTxAsync(params types.RequestCheckTx) *ReqRes {
+	req := types.ToRequestCheckTx(params)
 	res, err := cli.client.CheckTx(context.Background(), req.GetCheckTx(), grpc.FailFast(true))
 	if err != nil {
 		cli.StopForError(err)
@@ -265,13 +265,13 @@ func (cli *grpcClient) SetOptionSync(req types.RequestSetOption) (*types.Respons
 	return reqres.Response.GetSetOption(), cli.Error()
 }
 
-func (cli *grpcClient) DeliverTxSync(tx []byte) (*types.ResponseDeliverTx, error) {
-	reqres := cli.DeliverTxAsync(tx)
+func (cli *grpcClient) DeliverTxSync(params types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	reqres := cli.DeliverTxAsync(params)
 	return reqres.Response.GetDeliverTx(), cli.Error()
 }
 
-func (cli *grpcClient) CheckTxSync(tx []byte) (*types.ResponseCheckTx, error) {
-	reqres := cli.CheckTxAsync(tx)
+func (cli *grpcClient) CheckTxSync(params types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+	reqres := cli.CheckTxAsync(params)
 	return reqres.Response.GetCheckTx(), cli.Error()
 }
 

abci/client/local_client.go

@@ -81,24 +81,24 @@ func (app *localClient) SetOptionAsync(req types.RequestSetOption) *ReqRes {
 	)
 }
 
-func (app *localClient) DeliverTxAsync(tx []byte) *ReqRes {
+func (app *localClient) DeliverTxAsync(params types.RequestDeliverTx) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
-	res := app.Application.DeliverTx(types.RequestDeliverTx{Tx: tx})
+	res := app.Application.DeliverTx(params)
 	return app.callback(
-		types.ToRequestDeliverTx(tx),
+		types.ToRequestDeliverTx(params),
 		types.ToResponseDeliverTx(res),
 	)
 }
 
-func (app *localClient) CheckTxAsync(tx []byte) *ReqRes {
+func (app *localClient) CheckTxAsync(req types.RequestCheckTx) *ReqRes {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
-	res := app.Application.CheckTx(types.RequestCheckTx{Tx: tx})
+	res := app.Application.CheckTx(req)
 	return app.callback(
-		types.ToRequestCheckTx(tx),
+		types.ToRequestCheckTx(req),
 		types.ToResponseCheckTx(res),
 	)
 }
@@ -184,19 +184,19 @@ func (app *localClient) SetOptionSync(req types.RequestSetOption) (*types.Respon
 	return &res, nil
 }
 
-func (app *localClient) DeliverTxSync(tx []byte) (*types.ResponseDeliverTx, error) {
+func (app *localClient) DeliverTxSync(req types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
-	res := app.Application.DeliverTx(types.RequestDeliverTx{Tx: tx})
+	res := app.Application.DeliverTx(req)
 	return &res, nil
 }
 
-func (app *localClient) CheckTxSync(tx []byte) (*types.ResponseCheckTx, error) {
+func (app *localClient) CheckTxSync(req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
 	app.mtx.Lock()
 	defer app.mtx.Unlock()
 
-	res := app.Application.CheckTx(types.RequestCheckTx{Tx: tx})
+	res := app.Application.CheckTx(req)
 	return &res, nil
 }
 

abci/client/socket_client.go

@@ -243,12 +243,12 @@ func (cli *socketClient) SetOptionAsync(req types.RequestSetOption) *ReqRes {
 	return cli.queueRequest(types.ToRequestSetOption(req))
 }
 
-func (cli *socketClient) DeliverTxAsync(tx []byte) *ReqRes {
-	return cli.queueRequest(types.ToRequestDeliverTx(tx))
+func (cli *socketClient) DeliverTxAsync(req types.RequestDeliverTx) *ReqRes {
+	return cli.queueRequest(types.ToRequestDeliverTx(req))
 }
 
-func (cli *socketClient) CheckTxAsync(tx []byte) *ReqRes {
-	return cli.queueRequest(types.ToRequestCheckTx(tx))
+func (cli *socketClient) CheckTxAsync(req types.RequestCheckTx) *ReqRes {
+	return cli.queueRequest(types.ToRequestCheckTx(req))
 }
 
 func (cli *socketClient) QueryAsync(req types.RequestQuery) *ReqRes {
@@ -300,14 +300,14 @@ func (cli *socketClient) SetOptionSync(req types.RequestSetOption) (*types.Respo
 	return reqres.Response.GetSetOption(), cli.Error()
 }
 
-func (cli *socketClient) DeliverTxSync(tx []byte) (*types.ResponseDeliverTx, error) {
-	reqres := cli.queueRequest(types.ToRequestDeliverTx(tx))
+func (cli *socketClient) DeliverTxSync(req types.RequestDeliverTx) (*types.ResponseDeliverTx, error) {
+	reqres := cli.queueRequest(types.ToRequestDeliverTx(req))
 	cli.FlushSync()
 	return reqres.Response.GetDeliverTx(), cli.Error()
 }
 
-func (cli *socketClient) CheckTxSync(tx []byte) (*types.ResponseCheckTx, error) {
-	reqres := cli.queueRequest(types.ToRequestCheckTx(tx))
+func (cli *socketClient) CheckTxSync(req types.RequestCheckTx) (*types.ResponseCheckTx, error) {
+	reqres := cli.queueRequest(types.ToRequestCheckTx(req))
 	cli.FlushSync()
 	return reqres.Response.GetCheckTx(), cli.Error()
 }

abci/cmd/abci-cli/abci-cli.go

@@ -546,7 +546,7 @@ func cmdDeliverTx(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.DeliverTxSync(txBytes)
+	res, err := client.DeliverTxSync(types.RequestDeliverTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}
@@ -572,7 +572,7 @@ func cmdCheckTx(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
-	res, err := client.CheckTxSync(txBytes)
+	res, err := client.CheckTxSync(types.RequestCheckTx{Tx: txBytes})
 	if err != nil {
 		return err
 	}

abci/example/example_test.go

@@ -87,7 +87,7 @@ func testStream(t *testing.T, app types.Application) {
 	// Write requests
 	for counter := 0; counter < numDeliverTxs; counter++ {
 		// Send request
-		reqRes := client.DeliverTxAsync([]byte("test"))
+		reqRes := client.DeliverTxAsync(types.RequestDeliverTx{Tx: []byte("test")})
 		_ = reqRes
 		// check err ?
 

abci/example/kvstore/kvstore_test.go

@@ -283,11 +283,11 @@ func runClientTests(t *testing.T, client abcicli.Client) {
 }
 
 func testClient(t *testing.T, app abcicli.Client, tx []byte, key, value string) {
-	ar, err := app.DeliverTxSync(tx)
+	ar, err := app.DeliverTxSync(types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
 	require.False(t, ar.IsErr(), ar)
 	// repeating tx doesn't raise error
-	ar, err = app.DeliverTxSync(tx)
+	ar, err = app.DeliverTxSync(types.RequestDeliverTx{Tx: tx})
 	require.NoError(t, err)
 	require.False(t, ar.IsErr(), ar)
 

abci/tests/server/client.go

@@ -58,7 +58,7 @@ func Commit(client abcicli.Client, hashExp []byte) error {
 }
 
 func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
-	res, _ := client.DeliverTxSync(txBytes)
+	res, _ := client.DeliverTxSync(types.RequestDeliverTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: DeliverTx")
@@ -77,7 +77,7 @@ func DeliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []
 }
 
 func CheckTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) error {
-	res, _ := client.CheckTxSync(txBytes)
+	res, _ := client.CheckTxSync(types.RequestCheckTx{Tx: txBytes})
 	code, data, log := res.Code, res.Data, res.Log
 	if code != codeExp {
 		fmt.Println("Failed test: CheckTx")

abci/tests/test_app/app.go

@@ -43,7 +43,7 @@ func commit(client abcicli.Client, hashExp []byte) {
 }
 
 func deliverTx(client abcicli.Client, txBytes []byte, codeExp uint32, dataExp []byte) {
-	res, err := client.DeliverTxSync(txBytes)
+	res, err := client.DeliverTxSync(types.RequestDeliverTx{Tx: txBytes})
 	if err != nil {
 		panicf("client error: %v", err)
 	}

abci/types/messages.go

@@ -93,15 +93,15 @@ func ToRequestSetOption(req RequestSetOption) *Request {
 	}
 }
 
-func ToRequestDeliverTx(tx []byte) *Request {
+func ToRequestDeliverTx(req RequestDeliverTx) *Request {
 	return &Request{
-		Value: &Request_DeliverTx{&RequestDeliverTx{Tx: tx}},
+		Value: &Request_DeliverTx{&req},
 	}
 }
 
-func ToRequestCheckTx(tx []byte) *Request {
+func ToRequestCheckTx(req RequestCheckTx) *Request {
 	return &Request{
-		Value: &Request_CheckTx{&RequestCheckTx{Tx: tx}},
+		Value: &Request_CheckTx{&req},
 	}
 }
 

abci/types/types.pb.go

@@ -38,6 +38,29 @@ var _ = time.Kitchen
 // proto package needs to be updated.
 const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
 
+type CheckTxType int32
+
+const (
+	CheckTxType_New     CheckTxType = 0
+	CheckTxType_Recheck CheckTxType = 1
+)
+
+var CheckTxType_name = map[int32]string{
+	0: "New",
+	1: "Recheck",
+}
+var CheckTxType_value = map[string]int32{
+	"New":     0,
+	"Recheck": 1,
+}
+
+func (x CheckTxType) String() string {
+	return proto.EnumName(CheckTxType_name, int32(x))
+}
+func (CheckTxType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_types_30d8160a6576aafe, []int{0}
+}
+
 type Request struct {
 	// Types that are valid to be assigned to Value:
 	//	*Request_Echo
@@ -61,7 +84,7 @@ func (m *Request) Reset()         { *m = Request{} }
 func (m *Request) String() string { return proto.CompactTextString(m) }
 func (*Request) ProtoMessage()    {}
 func (*Request) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{0}
+	return fileDescriptor_types_30d8160a6576aafe, []int{0}
 }
 func (m *Request) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -483,7 +506,7 @@ func (m *RequestEcho) Reset()         { *m = RequestEcho{} }
 func (m *RequestEcho) String() string { return proto.CompactTextString(m) }
 func (*RequestEcho) ProtoMessage()    {}
 func (*RequestEcho) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{1}
+	return fileDescriptor_types_30d8160a6576aafe, []int{1}
 }
 func (m *RequestEcho) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -529,7 +552,7 @@ func (m *RequestFlush) Reset()         { *m = RequestFlush{} }
 func (m *RequestFlush) String() string { return proto.CompactTextString(m) }
 func (*RequestFlush) ProtoMessage()    {}
 func (*RequestFlush) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{2}
+	return fileDescriptor_types_30d8160a6576aafe, []int{2}
 }
 func (m *RequestFlush) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -571,7 +594,7 @@ func (m *RequestInfo) Reset()         { *m = RequestInfo{} }
 func (m *RequestInfo) String() string { return proto.CompactTextString(m) }
 func (*RequestInfo) ProtoMessage()    {}
 func (*RequestInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{3}
+	return fileDescriptor_types_30d8160a6576aafe, []int{3}
 }
 func (m *RequestInfo) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -634,7 +657,7 @@ func (m *RequestSetOption) Reset()         { *m = RequestSetOption{} }
 func (m *RequestSetOption) String() string { return proto.CompactTextString(m) }
 func (*RequestSetOption) ProtoMessage()    {}
 func (*RequestSetOption) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{4}
+	return fileDescriptor_types_30d8160a6576aafe, []int{4}
 }
 func (m *RequestSetOption) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -692,7 +715,7 @@ func (m *RequestInitChain) Reset()         { *m = RequestInitChain{} }
 func (m *RequestInitChain) String() string { return proto.CompactTextString(m) }
 func (*RequestInitChain) ProtoMessage()    {}
 func (*RequestInitChain) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{5}
+	return fileDescriptor_types_30d8160a6576aafe, []int{5}
 }
 func (m *RequestInitChain) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -770,7 +793,7 @@ func (m *RequestQuery) Reset()         { *m = RequestQuery{} }
 func (m *RequestQuery) String() string { return proto.CompactTextString(m) }
 func (*RequestQuery) ProtoMessage()    {}
 func (*RequestQuery) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{6}
+	return fileDescriptor_types_30d8160a6576aafe, []int{6}
 }
 func (m *RequestQuery) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -841,7 +864,7 @@ func (m *RequestBeginBlock) Reset()         { *m = RequestBeginBlock{} }
 func (m *RequestBeginBlock) String() string { return proto.CompactTextString(m) }
 func (*RequestBeginBlock) ProtoMessage()    {}
 func (*RequestBeginBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{7}
+	return fileDescriptor_types_30d8160a6576aafe, []int{7}
 }
 func (m *RequestBeginBlock) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -899,17 +922,18 @@ func (m *RequestBeginBlock) GetByzantineValidators() []Evidence {
 }
 
 type RequestCheckTx struct {
-	Tx                   []byte   `protobuf:"bytes,1,opt,name=tx,proto3" json:"tx,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	Tx                   []byte      `protobuf:"bytes,1,opt,name=tx,proto3" json:"tx,omitempty"`
+	Type                 CheckTxType `protobuf:"varint,2,opt,name=type,proto3,enum=types.CheckTxType" json:"type,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}    `json:"-"`
+	XXX_unrecognized     []byte      `json:"-"`
+	XXX_sizecache        int32       `json:"-"`
 }
 
 func (m *RequestCheckTx) Reset()         { *m = RequestCheckTx{} }
 func (m *RequestCheckTx) String() string { return proto.CompactTextString(m) }
 func (*RequestCheckTx) ProtoMessage()    {}
 func (*RequestCheckTx) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{8}
+	return fileDescriptor_types_30d8160a6576aafe, []int{8}
 }
 func (m *RequestCheckTx) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -945,6 +969,13 @@ func (m *RequestCheckTx) GetTx() []byte {
 	return nil
 }
 
+func (m *RequestCheckTx) GetType() CheckTxType {
+	if m != nil {
+		return m.Type
+	}
+	return CheckTxType_New
+}
+
 type RequestDeliverTx struct {
 	Tx                   []byte   `protobuf:"bytes,1,opt,name=tx,proto3" json:"tx,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
@@ -956,7 +987,7 @@ func (m *RequestDeliverTx) Reset()         { *m = RequestDeliverTx{} }
 func (m *RequestDeliverTx) String() string { return proto.CompactTextString(m) }
 func (*RequestDeliverTx) ProtoMessage()    {}
 func (*RequestDeliverTx) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{9}
+	return fileDescriptor_types_30d8160a6576aafe, []int{9}
 }
 func (m *RequestDeliverTx) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1003,7 +1034,7 @@ func (m *RequestEndBlock) Reset()         { *m = RequestEndBlock{} }
 func (m *RequestEndBlock) String() string { return proto.CompactTextString(m) }
 func (*RequestEndBlock) ProtoMessage()    {}
 func (*RequestEndBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{10}
+	return fileDescriptor_types_30d8160a6576aafe, []int{10}
 }
 func (m *RequestEndBlock) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1049,7 +1080,7 @@ func (m *RequestCommit) Reset()         { *m = RequestCommit{} }
 func (m *RequestCommit) String() string { return proto.CompactTextString(m) }
 func (*RequestCommit) ProtoMessage()    {}
 func (*RequestCommit) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{11}
+	return fileDescriptor_types_30d8160a6576aafe, []int{11}
 }
 func (m *RequestCommit) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1102,7 +1133,7 @@ func (m *Response) Reset()         { *m = Response{} }
 func (m *Response) String() string { return proto.CompactTextString(m) }
 func (*Response) ProtoMessage()    {}
 func (*Response) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{12}
+	return fileDescriptor_types_30d8160a6576aafe, []int{12}
 }
 func (m *Response) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1555,7 +1586,7 @@ func (m *ResponseException) Reset()         { *m = ResponseException{} }
 func (m *ResponseException) String() string { return proto.CompactTextString(m) }
 func (*ResponseException) ProtoMessage()    {}
 func (*ResponseException) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{13}
+	return fileDescriptor_types_30d8160a6576aafe, []int{13}
 }
 func (m *ResponseException) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1602,7 +1633,7 @@ func (m *ResponseEcho) Reset()         { *m = ResponseEcho{} }
 func (m *ResponseEcho) String() string { return proto.CompactTextString(m) }
 func (*ResponseEcho) ProtoMessage()    {}
 func (*ResponseEcho) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{14}
+	return fileDescriptor_types_30d8160a6576aafe, []int{14}
 }
 func (m *ResponseEcho) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1648,7 +1679,7 @@ func (m *ResponseFlush) Reset()         { *m = ResponseFlush{} }
 func (m *ResponseFlush) String() string { return proto.CompactTextString(m) }
 func (*ResponseFlush) ProtoMessage()    {}
 func (*ResponseFlush) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{15}
+	return fileDescriptor_types_30d8160a6576aafe, []int{15}
 }
 func (m *ResponseFlush) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1692,7 +1723,7 @@ func (m *ResponseInfo) Reset()         { *m = ResponseInfo{} }
 func (m *ResponseInfo) String() string { return proto.CompactTextString(m) }
 func (*ResponseInfo) ProtoMessage()    {}
 func (*ResponseInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{16}
+	return fileDescriptor_types_30d8160a6576aafe, []int{16}
 }
 func (m *ResponseInfo) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1771,7 +1802,7 @@ func (m *ResponseSetOption) Reset()         { *m = ResponseSetOption{} }
 func (m *ResponseSetOption) String() string { return proto.CompactTextString(m) }
 func (*ResponseSetOption) ProtoMessage()    {}
 func (*ResponseSetOption) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{17}
+	return fileDescriptor_types_30d8160a6576aafe, []int{17}
 }
 func (m *ResponseSetOption) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1833,7 +1864,7 @@ func (m *ResponseInitChain) Reset()         { *m = ResponseInitChain{} }
 func (m *ResponseInitChain) String() string { return proto.CompactTextString(m) }
 func (*ResponseInitChain) ProtoMessage()    {}
 func (*ResponseInitChain) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{18}
+	return fileDescriptor_types_30d8160a6576aafe, []int{18}
 }
 func (m *ResponseInitChain) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1896,7 +1927,7 @@ func (m *ResponseQuery) Reset()         { *m = ResponseQuery{} }
 func (m *ResponseQuery) String() string { return proto.CompactTextString(m) }
 func (*ResponseQuery) ProtoMessage()    {}
 func (*ResponseQuery) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{19}
+	return fileDescriptor_types_30d8160a6576aafe, []int{19}
 }
 func (m *ResponseQuery) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -1999,7 +2030,7 @@ func (m *ResponseBeginBlock) Reset()         { *m = ResponseBeginBlock{} }
 func (m *ResponseBeginBlock) String() string { return proto.CompactTextString(m) }
 func (*ResponseBeginBlock) ProtoMessage()    {}
 func (*ResponseBeginBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{20}
+	return fileDescriptor_types_30d8160a6576aafe, []int{20}
 }
 func (m *ResponseBeginBlock) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2053,7 +2084,7 @@ func (m *ResponseCheckTx) Reset()         { *m = ResponseCheckTx{} }
 func (m *ResponseCheckTx) String() string { return proto.CompactTextString(m) }
 func (*ResponseCheckTx) ProtoMessage()    {}
 func (*ResponseCheckTx) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{21}
+	return fileDescriptor_types_30d8160a6576aafe, []int{21}
 }
 func (m *ResponseCheckTx) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2156,7 +2187,7 @@ func (m *ResponseDeliverTx) Reset()         { *m = ResponseDeliverTx{} }
 func (m *ResponseDeliverTx) String() string { return proto.CompactTextString(m) }
 func (*ResponseDeliverTx) ProtoMessage()    {}
 func (*ResponseDeliverTx) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{22}
+	return fileDescriptor_types_30d8160a6576aafe, []int{22}
 }
 func (m *ResponseDeliverTx) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2254,7 +2285,7 @@ func (m *ResponseEndBlock) Reset()         { *m = ResponseEndBlock{} }
 func (m *ResponseEndBlock) String() string { return proto.CompactTextString(m) }
 func (*ResponseEndBlock) ProtoMessage()    {}
 func (*ResponseEndBlock) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{23}
+	return fileDescriptor_types_30d8160a6576aafe, []int{23}
 }
 func (m *ResponseEndBlock) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2316,7 +2347,7 @@ func (m *ResponseCommit) Reset()         { *m = ResponseCommit{} }
 func (m *ResponseCommit) String() string { return proto.CompactTextString(m) }
 func (*ResponseCommit) ProtoMessage()    {}
 func (*ResponseCommit) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{24}
+	return fileDescriptor_types_30d8160a6576aafe, []int{24}
 }
 func (m *ResponseCommit) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2367,7 +2398,7 @@ func (m *ConsensusParams) Reset()         { *m = ConsensusParams{} }
 func (m *ConsensusParams) String() string { return proto.CompactTextString(m) }
 func (*ConsensusParams) ProtoMessage()    {}
 func (*ConsensusParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{25}
+	return fileDescriptor_types_30d8160a6576aafe, []int{25}
 }
 func (m *ConsensusParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2417,7 +2448,7 @@ func (m *ConsensusParams) GetValidator() *ValidatorParams {
 	return nil
 }
 
-// BlockParams contains limits on the block size and timestamp.
+// BlockParams contains limits on the block size.
 type BlockParams struct {
 	// Note: must be greater than 0
 	MaxBytes int64 `protobuf:"varint,1,opt,name=max_bytes,json=maxBytes,proto3" json:"max_bytes,omitempty"`
@@ -2432,7 +2463,7 @@ func (m *BlockParams) Reset()         { *m = BlockParams{} }
 func (m *BlockParams) String() string { return proto.CompactTextString(m) }
 func (*BlockParams) ProtoMessage()    {}
 func (*BlockParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{26}
+	return fileDescriptor_types_30d8160a6576aafe, []int{26}
 }
 func (m *BlockParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2488,7 +2519,7 @@ func (m *EvidenceParams) Reset()         { *m = EvidenceParams{} }
 func (m *EvidenceParams) String() string { return proto.CompactTextString(m) }
 func (*EvidenceParams) ProtoMessage()    {}
 func (*EvidenceParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{27}
+	return fileDescriptor_types_30d8160a6576aafe, []int{27}
 }
 func (m *EvidenceParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2536,7 +2567,7 @@ func (m *ValidatorParams) Reset()         { *m = ValidatorParams{} }
 func (m *ValidatorParams) String() string { return proto.CompactTextString(m) }
 func (*ValidatorParams) ProtoMessage()    {}
 func (*ValidatorParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{28}
+	return fileDescriptor_types_30d8160a6576aafe, []int{28}
 }
 func (m *ValidatorParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2584,7 +2615,7 @@ func (m *LastCommitInfo) Reset()         { *m = LastCommitInfo{} }
 func (m *LastCommitInfo) String() string { return proto.CompactTextString(m) }
 func (*LastCommitInfo) ProtoMessage()    {}
 func (*LastCommitInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{29}
+	return fileDescriptor_types_30d8160a6576aafe, []int{29}
 }
 func (m *LastCommitInfo) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2639,7 +2670,7 @@ func (m *Event) Reset()         { *m = Event{} }
 func (m *Event) String() string { return proto.CompactTextString(m) }
 func (*Event) ProtoMessage()    {}
 func (*Event) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{30}
+	return fileDescriptor_types_30d8160a6576aafe, []int{30}
 }
 func (m *Event) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2713,7 +2744,7 @@ func (m *Header) Reset()         { *m = Header{} }
 func (m *Header) String() string { return proto.CompactTextString(m) }
 func (*Header) ProtoMessage()    {}
 func (*Header) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{31}
+	return fileDescriptor_types_30d8160a6576aafe, []int{31}
 }
 func (m *Header) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2866,7 +2897,7 @@ func (m *Version) Reset()         { *m = Version{} }
 func (m *Version) String() string { return proto.CompactTextString(m) }
 func (*Version) ProtoMessage()    {}
 func (*Version) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{32}
+	return fileDescriptor_types_30d8160a6576aafe, []int{32}
 }
 func (m *Version) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2921,7 +2952,7 @@ func (m *BlockID) Reset()         { *m = BlockID{} }
 func (m *BlockID) String() string { return proto.CompactTextString(m) }
 func (*BlockID) ProtoMessage()    {}
 func (*BlockID) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{33}
+	return fileDescriptor_types_30d8160a6576aafe, []int{33}
 }
 func (m *BlockID) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -2976,7 +3007,7 @@ func (m *PartSetHeader) Reset()         { *m = PartSetHeader{} }
 func (m *PartSetHeader) String() string { return proto.CompactTextString(m) }
 func (*PartSetHeader) ProtoMessage()    {}
 func (*PartSetHeader) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{34}
+	return fileDescriptor_types_30d8160a6576aafe, []int{34}
 }
 func (m *PartSetHeader) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3033,7 +3064,7 @@ func (m *Validator) Reset()         { *m = Validator{} }
 func (m *Validator) String() string { return proto.CompactTextString(m) }
 func (*Validator) ProtoMessage()    {}
 func (*Validator) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{35}
+	return fileDescriptor_types_30d8160a6576aafe, []int{35}
 }
 func (m *Validator) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3089,7 +3120,7 @@ func (m *ValidatorUpdate) Reset()         { *m = ValidatorUpdate{} }
 func (m *ValidatorUpdate) String() string { return proto.CompactTextString(m) }
 func (*ValidatorUpdate) ProtoMessage()    {}
 func (*ValidatorUpdate) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{36}
+	return fileDescriptor_types_30d8160a6576aafe, []int{36}
 }
 func (m *ValidatorUpdate) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3145,7 +3176,7 @@ func (m *VoteInfo) Reset()         { *m = VoteInfo{} }
 func (m *VoteInfo) String() string { return proto.CompactTextString(m) }
 func (*VoteInfo) ProtoMessage()    {}
 func (*VoteInfo) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{37}
+	return fileDescriptor_types_30d8160a6576aafe, []int{37}
 }
 func (m *VoteInfo) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3200,7 +3231,7 @@ func (m *PubKey) Reset()         { *m = PubKey{} }
 func (m *PubKey) String() string { return proto.CompactTextString(m) }
 func (*PubKey) ProtoMessage()    {}
 func (*PubKey) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{38}
+	return fileDescriptor_types_30d8160a6576aafe, []int{38}
 }
 func (m *PubKey) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3258,7 +3289,7 @@ func (m *Evidence) Reset()         { *m = Evidence{} }
 func (m *Evidence) String() string { return proto.CompactTextString(m) }
 func (*Evidence) ProtoMessage()    {}
 func (*Evidence) Descriptor() ([]byte, []int) {
-	return fileDescriptor_types_62f0c59aeb977f78, []int{39}
+	return fileDescriptor_types_30d8160a6576aafe, []int{39}
 }
 func (m *Evidence) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -3403,6 +3434,8 @@ func init() {
 	golang_proto.RegisterType((*PubKey)(nil), "types.PubKey")
 	proto.RegisterType((*Evidence)(nil), "types.Evidence")
 	golang_proto.RegisterType((*Evidence)(nil), "types.Evidence")
+	proto.RegisterEnum("types.CheckTxType", CheckTxType_name, CheckTxType_value)
+	golang_proto.RegisterEnum("types.CheckTxType", CheckTxType_name, CheckTxType_value)
 }
 func (this *Request) Equal(that interface{}) bool {
 	if that == nil {
@@ -3958,6 +3991,9 @@ func (this *RequestCheckTx) Equal(that interface{}) bool {
 	if !bytes.Equal(this.Tx, that1.Tx) {
 		return false
 	}
+	if this.Type != that1.Type {
+		return false
+	}
 	if !bytes.Equal(this.XXX_unrecognized, that1.XXX_unrecognized) {
 		return false
 	}
@@ -6211,6 +6247,11 @@ func (m *RequestCheckTx) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintTypes(dAtA, i, uint64(len(m.Tx)))
 		i += copy(dAtA[i:], m.Tx)
 	}
+	if m.Type != 0 {
+		dAtA[i] = 0x10
+		i++
+		i = encodeVarintTypes(dAtA, i, uint64(m.Type))
+	}
 	if m.XXX_unrecognized != nil {
 		i += copy(dAtA[i:], m.XXX_unrecognized)
 	}
@@ -7872,8 +7913,9 @@ func NewPopulatedRequestCheckTx(r randyTypes, easy bool) *RequestCheckTx {
 	for i := 0; i < v11; i++ {
 		this.Tx[i] = byte(r.Intn(256))
 	}
+	this.Type = CheckTxType([]int32{0, 1}[r.Intn(2)])
 	if !easy && r.Intn(10) != 0 {
-		this.XXX_unrecognized = randUnrecognizedTypes(r, 2)
+		this.XXX_unrecognized = randUnrecognizedTypes(r, 3)
 	}
 	return this
 }
@@ -8906,6 +8948,9 @@ func (m *RequestCheckTx) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTypes(uint64(l))
 	}
+	if m.Type != 0 {
+		n += 1 + sovTypes(uint64(m.Type))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -11127,6 +11172,25 @@ func (m *RequestCheckTx) Unmarshal(dAtA []byte) error {
 				m.Tx = []byte{}
 			}
 			iNdEx = postIndex
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType)
+			}
+			m.Type = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Type |= (CheckTxType(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTypes(dAtA[iNdEx:])
@@ -15638,152 +15702,154 @@ var (
 	ErrIntOverflowTypes   = fmt.Errorf("proto: integer overflow")
 )
 
-func init() { proto.RegisterFile("abci/types/types.proto", fileDescriptor_types_62f0c59aeb977f78) }
+func init() { proto.RegisterFile("abci/types/types.proto", fileDescriptor_types_30d8160a6576aafe) }
 func init() {
-	golang_proto.RegisterFile("abci/types/types.proto", fileDescriptor_types_62f0c59aeb977f78)
-}
-
-var fileDescriptor_types_62f0c59aeb977f78 = []byte{
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+	golang_proto.RegisterFile("abci/types/types.proto", fileDescriptor_types_30d8160a6576aafe)
+}
+
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+	0x64, 0x05, 0x72, 0x07, 0xea, 0x2a, 0x09, 0xa9, 0xa8, 0x8c, 0x9a, 0xfe, 0x63, 0xcc, 0x42, 0x51,
+	0xd3, 0x2f, 0x73, 0x52, 0xb2, 0x6c, 0x29, 0xbd, 0xec, 0x0c, 0x1a, 0x51, 0xa2, 0xc9, 0x66, 0x63,
+	0xb9, 0x62, 0x37, 0x9f, 0x8d, 0xd5, 0xa2, 0x09, 0x50, 0x78, 0x47, 0xe8, 0x4c, 0x5c, 0x66, 0x5b,
+	0x49, 0x08, 0xe1, 0x3b, 0x1a, 0x66, 0x47, 0x0a, 0x1e, 0x47, 0xf1, 0x62, 0xbc, 0x07, 0x35, 0xb9,
+	0xb7, 0xc2, 0xf4, 0x55, 0x44, 0x49, 0x7f, 0xd4, 0xa0, 0x11, 0xe5, 0xe9, 0x42, 0xa5, 0xcc, 0xa6,
+	0x4b, 0x5f, 0x75, 0xd3, 0xff, 0xff, 0xc4, 0x73, 0x07, 0x88, 0xcc, 0x2f, 0xa7, 0x1e, 0x77, 0xdc,
+	0x89, 0x25, 0x6d, 0x2d, 0x73, 0x50, 0x17, 0x25, 0x27, 0x28, 0x38, 0x16, 0xf3, 0x6f, 0xdf, 0x82,
+	0x66, 0xea, 0xee, 0x82, 0xd4, 0xa1, 0xfc, 0x09, 0x7b, 0xd9, 0x5d, 0x23, 0x4d, 0xa8, 0x9b, 0x0c,
+	0x3b, 0xd1, 0xae, 0xb6, 0xf7, 0x59, 0x15, 0x3a, 0x07, 0xc3, 0x07, 0x47, 0x07, 0xbe, 0x3f, 0x73,
+	0xc6, 0x14, 0x5b, 0x97, 0x5d, 0xa8, 0x60, 0xf7, 0x56, 0x70, 0x4b, 0xdd, 0x2f, 0xba, 0x46, 0x20,
+	0x7b, 0x50, 0xc5, 0x26, 0x8e, 0x14, 0x5d, 0x56, 0xf7, 0x0b, 0x6f, 0x13, 0xc4, 0x4b, 0x64, 0x9b,
+	0x77, 0xf1, 0xce, 0xba, 0x5f, 0x74, 0xa5, 0x40, 0x3e, 0x02, 0x3d, 0xe9, 0xae, 0x56, 0xdd, 0x5c,
+	0xf7, 0x57, 0x5e, 0x2e, 0x08, 0xfd, 0xa4, 0x02, 0x5d, 0x75, 0x01, 0xdb, 0x5f, 0xd9, 0x85, 0x93,
+	0x7d, 0xa8, 0x47, 0xb5, 0x7b, 0xf1, 0xdd, 0x72, 0x7f, 0x45, 0xe3, 0x2f, 0xcc, 0x23, 0x1b, 0xa6,
+	0xa2, 0x0b, 0xf0, 0x7e, 0xe1, 0xed, 0x04, 0xb9, 0x0b, 0x35, 0x55, 0x44, 0x15, 0xde, 0x2f, 0xf7,
+	0x8b, 0xdb, 0x77, 0x71, 0xc8, 0xa4, 0x65, 0x5c, 0x75, 0x49, 0xdf, 0x5f, 0x79, 0x8d, 0x42, 0x0e,
+	0x00, 0x52, 0x7d, 0xcf, 0xca, 0xdb, 0xf7, 0xfe, 0xea, 0xeb, 0x11, 0x72, 0x1f, 0x1a, 0xc9, 0x95,
+	0x57, 0xf1, 0x7d, 0x7a, 0x7f, 0xd5, 0x8d, 0xc5, 0xf0, 0xc6, 0xbf, 0xfe, 0xb2, 0xa9, 0xfd, 0xf6,
+	0x7c, 0x53, 0xfb, 0xe2, 0x7c, 0x53, 0xfb, 0xf2, 0x7c, 0x53, 0xfb, 0xc3, 0xf9, 0xa6, 0xf6, 0xe7,
+	0xf3, 0x4d, 0xed, 0x77, 0x7f, 0xdd, 0xd4, 0x46, 0x35, 0x8c, 0x91, 0x0f, 0xfe, 0x13, 0x00, 0x00,
+	0xff, 0xff, 0x92, 0xed, 0x9f, 0xca, 0x3f, 0x1a, 0x00, 0x00,
 }

abci/types/types.proto

@@ -81,8 +81,14 @@ message RequestBeginBlock {
   repeated Evidence byzantine_validators = 4 [(gogoproto.nullable)=false];
 }
 
+enum CheckTxType {
+  New = 0;
+  Recheck = 1;
+}
+
 message RequestCheckTx {
   bytes tx = 1;
+  CheckTxType type = 2;
 }
 
 message RequestDeliverTx {

consensus/replay_test.go

@@ -565,7 +565,7 @@ func TestMockProxyApp(t *testing.T) {
 		mock.SetResponseCallback(proxyCb)
 
 		someTx := []byte("tx")
-		mock.DeliverTxAsync(someTx)
+		mock.DeliverTxAsync(abci.RequestDeliverTx{Tx: someTx})
 	})
 	assert.True(t, validTxs == 1)
 	assert.True(t, invalidTxs == 0)

docs/spec/abci/abci.md

@@ -296,6 +296,12 @@ Commit are included in the header of the next block.
 
 - **Request**:
   - `Tx ([]byte)`: The request transaction bytes
+  - `Type (CheckTxType)`: What type of `CheckTx` request is this? At present,
+    there are two possible values: `CheckTx_Unchecked` (the default, which says
+    that a full check is required), and `CheckTx_Checked` (when the mempool is
+    initiating a normal recheck of a transaction).
+  - `AdditionalData ([]byte)`: Reserved for future use. See
+    [here](https://github.com/tendermint/tendermint/issues/2127#issuecomment-456661420).
 - **Response**:
   - `Code (uint32)`: Response code
   - `Data ([]byte)`: Result bytes, if any.

mempool/clist_mempool.go

@@ -279,7 +279,7 @@ func (mem *CListMempool) CheckTxWithInfo(tx types.Tx, cb func(*abci.Response), t
 		return err
 	}
 
-	reqRes := mem.proxyAppConn.CheckTxAsync(tx)
+	reqRes := mem.proxyAppConn.CheckTxAsync(abci.RequestCheckTx{Tx: tx})
 	reqRes.SetCallback(mem.reqResCb(tx, txInfo.SenderID, cb))
 
 	return nil
@@ -591,7 +591,10 @@ func (mem *CListMempool) recheckTxs() {
 	// NOTE: globalCb may be called concurrently.
 	for e := mem.txs.Front(); e != nil; e = e.Next() {
 		memTx := e.Value.(*mempoolTx)
-		mem.proxyAppConn.CheckTxAsync(memTx.tx)
+		mem.proxyAppConn.CheckTxAsync(abci.RequestCheckTx{
+			Tx:   memTx.tx,
+			Type: abci.CheckTxType_Recheck,
+		})
 	}
 
 	mem.proxyAppConn.FlushAsync()

mempool/clist_mempool_test.go

@@ -314,7 +314,7 @@ func TestSerialReap(t *testing.T) {
 		for i := start; i < end; i++ {
 			txBytes := make([]byte, 8)
 			binary.BigEndian.PutUint64(txBytes, uint64(i))
-			res, err := appConnCon.DeliverTxSync(txBytes)
+			res, err := appConnCon.DeliverTxSync(abci.RequestDeliverTx{Tx: txBytes})
 			if err != nil {
 				t.Errorf("Client error committing tx: %v", err)
 			}
@@ -522,7 +522,7 @@ func TestMempoolTxsBytes(t *testing.T) {
 	err = appConnCon.Start()
 	require.Nil(t, err)
 	defer appConnCon.Stop()
-	res, err := appConnCon.DeliverTxSync(txBytes)
+	res, err := appConnCon.DeliverTxSync(abci.RequestDeliverTx{Tx: txBytes})
 	require.NoError(t, err)
 	require.EqualValues(t, 0, res.Code)
 	res2, err := appConnCon.CommitSync()

proxy/app_conn.go

@@ -15,7 +15,7 @@ type AppConnConsensus interface {
 	InitChainSync(types.RequestInitChain) (*types.ResponseInitChain, error)
 
 	BeginBlockSync(types.RequestBeginBlock) (*types.ResponseBeginBlock, error)
-	DeliverTxAsync(tx []byte) *abcicli.ReqRes
+	DeliverTxAsync(types.RequestDeliverTx) *abcicli.ReqRes
 	EndBlockSync(types.RequestEndBlock) (*types.ResponseEndBlock, error)
 	CommitSync() (*types.ResponseCommit, error)
 }
@@ -24,7 +24,7 @@ type AppConnMempool interface {
 	SetResponseCallback(abcicli.Callback)
 	Error() error
 
-	CheckTxAsync(tx []byte) *abcicli.ReqRes
+	CheckTxAsync(types.RequestCheckTx) *abcicli.ReqRes
 
 	FlushAsync() *abcicli.ReqRes
 	FlushSync() error
@@ -69,8 +69,8 @@ func (app *appConnConsensus) BeginBlockSync(req types.RequestBeginBlock) (*types
 	return app.appConn.BeginBlockSync(req)
 }
 
-func (app *appConnConsensus) DeliverTxAsync(tx []byte) *abcicli.ReqRes {
-	return app.appConn.DeliverTxAsync(tx)
+func (app *appConnConsensus) DeliverTxAsync(req types.RequestDeliverTx) *abcicli.ReqRes {
+	return app.appConn.DeliverTxAsync(req)
 }
 
 func (app *appConnConsensus) EndBlockSync(req types.RequestEndBlock) (*types.ResponseEndBlock, error) {
@@ -110,8 +110,8 @@ func (app *appConnMempool) FlushSync() error {
 	return app.appConn.FlushSync()
 }
 
-func (app *appConnMempool) CheckTxAsync(tx []byte) *abcicli.ReqRes {
-	return app.appConn.CheckTxAsync(tx)
+func (app *appConnMempool) CheckTxAsync(req types.RequestCheckTx) *abcicli.ReqRes {
+	return app.appConn.CheckTxAsync(req)
 }
 
 //------------------------------------------------

state/execution.go

@@ -284,7 +284,7 @@ func execBlockOnProxyApp(
 
 	// Run txs of block.
 	for _, tx := range block.Txs {
-		proxyAppConn.DeliverTxAsync(tx)
+		proxyAppConn.DeliverTxAsync(abci.RequestDeliverTx{Tx: tx})
 		if err := proxyAppConn.Error(); err != nil {
 			return nil, err
 		}