ErrTxParse->ErrTxDecode; check for empty bytes in account and tx

examples/basecoin/app/app.go

@@ -122,11 +122,15 @@ func MakeCodec() *wire.Codec {
 func (app *BasecoinApp) txDecoder(txBytes []byte) (sdk.Tx, sdk.Error) {
 	var tx = sdk.StdTx{}
 
+	if len(txBytes) == 0 {
+		return nil, sdk.ErrTxDecode("txBytes are empty")
+	}
+
 	// StdTx.Msg is an interface. The concrete types
 	// are registered by MakeTxCodec in bank.RegisterWire.
 	err := app.cdc.UnmarshalBinary(txBytes, &tx)
 	if err != nil {
-		return nil, sdk.ErrTxParse("").TraceCause(err, "")
+		return nil, sdk.ErrTxDecode("").TraceCause(err, "")
 	}
 	return tx, nil
 }

examples/basecoin/types/account.go

@@ -25,6 +25,9 @@ func (acc *AppAccount) SetName(name string) { acc.Name = name }
 // Get the AccountDecoder function for the custom AppAccount
 func GetAccountDecoder(cdc *wire.Codec) sdk.AccountDecoder {
 	return func(accBytes []byte) (res sdk.Account, err error) {
+		if len(accBytes) == 0 {
+			return nil, sdk.ErrTxDecode("accBytes are empty")
+		}
 		acct := new(AppAccount)
 		err = cdc.UnmarshalBinary(accBytes, &acct)
 		if err != nil {

examples/kvstore/tx.go

@@ -64,7 +64,7 @@ func decodeTx(txBytes []byte) (sdk.Tx, sdk.Error) {
 		k, v := split[0], split[1]
 		tx = kvstoreTx{k, v, txBytes}
 	} else {
-		return nil, sdk.ErrTxParse("too many =")
+		return nil, sdk.ErrTxDecode("too many =")
 	}
 
 	return tx, nil