Merge branch 'release/poc5-rc1'

1 files changed, 22 insertions, 1 deletions

diff --git a/ethchain/error.go b/ethchain/error.go
index 0f1d061c0..8d37b0208 100644
--- a/ethchain/error.go
+++ b/ethchain/error.go
@@ -1,6 +1,8 @@
 package ethchain
 
-import "fmt"
+import (
+	"fmt"
+)
 
 // Parent error. In case a parent is unknown this error will be thrown
 // by the block manager
@@ -40,3 +42,22 @@ func IsValidationErr(err error) bool {
 
 	return ok
 }
+
+type NonceErr struct {
+	Message string
+	Is, Exp uint64
+}
+
+func (err *NonceErr) Error() string {
+	return err.Message
+}
+
+func NonceError(is, exp uint64) *NonceErr {
+	return &NonceErr{Message: fmt.Sprintf("Nonce err. Is %d, expected %d", is, exp), Is: is, Exp: exp}
+}
+
+func IsNonceErr(err error) bool {
+	_, ok := err.(*NonceErr)
+
+	return ok
+}