feat: RBF supports

main.go

@@ -5,6 +5,12 @@ import (
 	"flag"
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
+	"runtime"
+)
+
+var (
+	version       string
+	gitCommitHash string
 )
 
 func main() {
@@ -21,6 +27,21 @@ func main() {
 
 	app.RouteNotFound("/*", web.DefaultNotFound)
 
+	// info
+	app.Any("/", func(c echo.Context) error {
+		return c.JSON(200, struct {
+			Code      int    `json:"code"`
+			Version   string `json:"version"`
+			GoVersion string `json:"go-version"`
+			GitHash   string `json:"git-commit-hash"`
+		}{
+			Code:      200,
+			Version:   version,
+			GoVersion: runtime.Version(),
+			GitHash:   gitCommitHash,
+		})
+	})
+
 	// addresses
 	app.Match([]string{"GET", "POST"}, "/address/new", web.NewAddress)
 	app.Match([]string{"GET", "POST"}, "/address/parse", web.ParseAddress)

utils/btc/btc.go

@@ -200,6 +200,7 @@ func CreateRawTransaction(inputs Inputs, outputs Outputs) (*wire.MsgTx, error) {
 
 		prevOut := wire.NewOutPoint(txHash, uint32(input.VOut))
 		txIn := wire.NewTxIn(prevOut, nil, nil)
+		txIn.Sequence = wire.MaxTxInSequenceNum - 2
 		tx.AddTxIn(txIn)
 	}