Add option to pay fees (#23)

* add BroadcastWithFee method

* update kava depency

client/client.go

@@ -6,11 +6,11 @@ import (
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	"github.com/tendermint/go-amino"
 	"github.com/tendermint/tendermint/libs/log"
 	rpcclient "github.com/tendermint/tendermint/rpc/client/http"
 	ctypes "github.com/tendermint/tendermint/rpc/core/types"
 	tmtypes "github.com/tendermint/tendermint/types"
-	"github.com/tendermint/go-amino"
 
 	"github.com/kava-labs/go-sdk/keys"
 )
@@ -44,9 +44,16 @@ func NewKavaClient(cdc *amino.Codec, mnemonic string, coinID uint32, rpcAddr str
 	}
 }
 
-// Broadcast sends a message to the Kava blockchain as a transaction
+// Broadcast sends a message to the Kava blockchain as a transaction.
+// This pays no transaction fees.
 func (kc *KavaClient) Broadcast(m sdk.Msg, syncType SyncType) (*ctypes.ResultBroadcastTx, error) {
-	signBz, err := kc.sign(m)
+	fee := authtypes.NewStdFee(250000, nil)
+	return kc.BroadcastWithFee(m, fee, syncType)
+}
+
+// BroadcastWithFee sends a message to the Kava blockchain as a transaction, paying the specified transaction fee.
+func (kc *KavaClient) BroadcastWithFee(m sdk.Msg, fee authtypes.StdFee, syncType SyncType) (*ctypes.ResultBroadcastTx, error) {
+	signBz, err := kc.sign(m, fee)
 	if err != nil {
 		return nil, err
 	}
@@ -79,7 +86,7 @@ func (kc *KavaClient) Broadcast(m sdk.Msg, syncType SyncType) (*ctypes.ResultBro
 	}
 }
 
-func (kc *KavaClient) sign(m sdk.Msg) ([]byte, error) {
+func (kc *KavaClient) sign(m sdk.Msg, fee authtypes.StdFee) ([]byte, error) {
 	if kc.Keybase == nil {
 		return nil, fmt.Errorf("Keys are missing, must to set key")
 	}
@@ -93,7 +100,7 @@ func (kc *KavaClient) sign(m sdk.Msg) ([]byte, error) {
 		ChainID:       chainID,
 		AccountNumber: 0,
 		Sequence:      0,
-		Fee:           authtypes.NewStdFee(250000, nil),
+		Fee:           fee,
 		Msgs:          []sdk.Msg{m},
 		Memo:          "",
 	}

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/btcsuite/btcd v0.20.1-beta
 	github.com/cosmos/cosmos-sdk v0.39.1
 	github.com/cosmos/go-bip39 v0.0.0-20180819234021-555e2067c45d
-	github.com/kava-labs/kava v0.11.0-rc1
+	github.com/kava-labs/kava v0.12.0
 	github.com/stretchr/testify v1.6.1
 	github.com/tendermint/go-amino v0.15.1
 	github.com/tendermint/tendermint v0.33.7

go.sum

@@ -237,10 +237,8 @@ github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/u
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
-github.com/kava-labs/kava v0.11.0-alpha.1.0.20200922214458-087b10d15ff2 h1:D2RyPYygQ7cr08ax3D03qC+c6gep7TTHf+NNucNKSu0=
-github.com/kava-labs/kava v0.11.0-alpha.1.0.20200922214458-087b10d15ff2/go.mod h1:1AYBNxuelDdwzZzWFsgPUMVwZ9qfKSjgT6UEEhTe/ys=
-github.com/kava-labs/kava v0.11.0-rc1 h1:2qV0SYgtzPxZ+oLJV5dzLweLNa0AXxM7X+n1zrnDOS0=
-github.com/kava-labs/kava v0.11.0-rc1/go.mod h1:1AYBNxuelDdwzZzWFsgPUMVwZ9qfKSjgT6UEEhTe/ys=
+github.com/kava-labs/kava v0.12.0 h1:ix/Ooq5HV9pIvUd2nbHjnDheGx65+x3Da5pecI0OXpQ=
+github.com/kava-labs/kava v0.12.0/go.mod h1:1AYBNxuelDdwzZzWFsgPUMVwZ9qfKSjgT6UEEhTe/ys=
 github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d h1:Z+RDyXzjKE0i2sTjZ/b1uxiGtPhFy34Ou/Tk0qwN0kM=
 github.com/keybase/go-keychain v0.0.0-20190712205309-48d3d31d256d/go.mod h1:JJNrCn9otv/2QP4D7SMJBgaleKpOf66PnW6F5WGNRIc=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=

keys/keys.go

@@ -12,13 +12,13 @@ import (
 	"strings"
 
 	"github.com/btcsuite/btcd/btcec"
-	"github.com/cosmos/go-bip39"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	"github.com/cosmos/go-bip39"
 
+	"github.com/tendermint/go-amino"
 	"github.com/tendermint/tendermint/crypto"
 	"github.com/tendermint/tendermint/crypto/secp256k1"
-	"github.com/tendermint/go-amino"
 )
 
 const (