Fix offline timeouts

yabl/protocol.go

@@ -57,7 +57,7 @@ type converter struct {
 
 type Converter interface {
 	EventsFromFrame(*can.CanFrame) ([]*Event, bool)
-	CheckTimeouts() ([]*Event, bool)
+	CheckTimeouts(isOffline bool) ([]*Event, bool)
 }
 
 func NewProtocolConverter() Converter {
@@ -122,12 +122,19 @@ func (u unit) GetUnitId() uint {
 	return uint(u)
 }
 
-func (c *converter) CheckTimeouts() ([]*Event, bool) {
+func (c *converter) CheckTimeouts(isOffline bool) ([]*Event, bool) {
 	var multipler uint = 2
 	var events []*Event
 
 	for k, param := range c.protocolMap {
-		now := time.Now()
+
+		var now time.Time
+		if isOffline {
+			now = getMaxTime(&c.protocolMap)
+		} else {
+			now = time.Now()
+		}
+
 		deadline := now.Add(-time.Duration(param.interval*multipler) * time.Millisecond)
 
 		var from uint8 = 0
@@ -161,3 +168,16 @@ func (c *converter) CheckTimeouts() ([]*Event, bool) {
 	}
 	return events, events != nil
 }
+
+func getMaxTime(protocolMap *map[key]action) time.Time {
+	now := time.Unix(0, 0)
+
+	for _, param := range *protocolMap {
+		for _, fld := range param.fields {
+			if fld.last != nil && fld.last.After(now) {
+				now = *fld.last
+			}
+		}
+	}
+	return now
+}