Prevent staleness check from happening during replay, which can necesssarily involve receiving old messages

Author: adam-talos

resend_state_test.go

@@ -17,6 +17,7 @@ package quickfix
 
 import (
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/suite"
 
@@ -189,3 +190,32 @@ func (s *resendStateTestSuite) TestFixMsgInResendChunk() {
 	s.FieldEquals(tagBeginSeqNo, 3, s.MockApp.lastToAdmin.Body)
 	s.FieldEquals(tagEndSeqNo, 0, s.MockApp.lastToAdmin.Body)
 }
+
+//TestFixMsgResendWithOldSendingTime Tests that we suspend staleness checks during replay
+//as a replayed message may be arbitrarily old
+func (s *resendStateTestSuite) TestFixMsgResendWithOldSendingTime() {
+	s.session.State = inSession{}
+	s.ResendRequestChunkSize = 2
+
+	//in session expects seq number 1, send too high
+	s.MessageFactory.SetNextSeqNum(4)
+	s.MockApp.On("ToAdmin")
+
+	msgSeqNum4 := s.NewOrderSingle()
+	s.fixMsgIn(s.session, msgSeqNum4)
+
+	s.MockApp.AssertExpectations(s.T())
+	s.State(resendState{})
+	s.LastToAdminMessageSent()
+	s.MessageType(string(msgTypeResendRequest), s.MockApp.lastToAdmin)
+	s.FieldEquals(tagBeginSeqNo, 1, s.MockApp.lastToAdmin.Body)
+	s.FieldEquals(tagEndSeqNo, 2, s.MockApp.lastToAdmin.Body)
+	s.NextTargetMsgSeqNum(1)
+
+	msgSeqNum5 := s.NewOrderSingle()
+	//set the sending time far enough in the past to trip the staleness check
+	msgSeqNum5.Header.SetField(tagSendingTime, FIXUTCTimestamp{Time: time.Now().Add(-s.MaxLatency)})
+	s.fixMsgIn(s.session, msgSeqNum5)
+	s.State(resendState{})
+	s.NextTargetMsgSeqNum(1)
+}

session.go

@@ -516,10 +516,14 @@ func (s *session) verifySelect(msg *Message, checkTooHigh bool, checkTooLow bool
 		return reject
 	}
 
-	if reject := s.checkSendingTime(msg); reject != nil {
-		return reject
+	switch s.stateMachine.State.(type) {
+	case resendState:
+		//Don't check staleness of a replay
+	default:
+		if reject := s.checkSendingTime(msg); reject != nil {
+			return reject
+		}
 	}
-
 	if checkTooLow {
 		if reject := s.checkTargetTooLow(msg); reject != nil {
 			return reject