Fix error message when signing with duplicate tx_id (Issue #60) (#63)

* Fix error message when signing with duplicate tx id

* Update error message for duplicate signing requests to be more concise

Author: Azzurriii

pkg/event/types.go

@@ -137,6 +137,8 @@ func GetErrorCodeFromError(err error) ErrorCode {
 		return ErrorCodeContextCancelled
 	case contains(errStr, "invalid signature from initiator"):
 		return ErrorCodeInvalidInitiatorSignature
+	case contains(errStr, "duplicate"):
+		return ErrorCodeSessionDuplicate
 	default:
 		return ErrorCodeUnknown
 	}

pkg/eventconsumer/event_consumer.go

@@ -323,6 +323,15 @@ func (ec *eventConsumer) consumeTxSigningEvent() error {
 
 		// Check for duplicate session and track if new
 		if ec.checkDuplicateSession(msg.WalletID, msg.TxID) {
+			duplicateErr := fmt.Errorf("duplicate signing request detected for walletID=%s txID=%s", msg.WalletID, msg.TxID)
+			ec.handleSigningSessionError(
+				msg.WalletID,
+				msg.TxID,
+				msg.NetworkInternalCode,
+				duplicateErr,
+				"Duplicate session",
+				natMsg,
+			)
 			return
 		}