add traffic reset for stats

handler/socks/v4/metadata.go

@@ -15,9 +15,11 @@ import (
 type metadata struct {
 	readTimeout            time.Duration
 	hash                   string
-	observePeriod          time.Duration
 	limiterRefreshInterval time.Duration
 
+	observerPeriod       time.Duration
+	observerResetTraffic bool
+
 	sniffing                    bool
 	sniffingTimeout             time.Duration
 	sniffingWebsocket           bool
@@ -37,14 +39,16 @@ func (h *socks4Handler) parseMetadata(md mdata.Metadata) (err error) {
 
 	h.md.hash = mdutil.GetString(md, "hash")
 
-	h.md.observePeriod = mdutil.GetDuration(md, "observePeriod", "observer.observePeriod")
-	if h.md.observePeriod == 0 {
-		h.md.observePeriod = 5 * time.Second
+	h.md.observerPeriod = mdutil.GetDuration(md, "observePeriod", "observer.period", "observer.observePeriod")
+	if h.md.observerPeriod == 0 {
+		h.md.observerPeriod = 5 * time.Second
 	}
-	if h.md.observePeriod < time.Second {
-		h.md.observePeriod = time.Second
+	if h.md.observerPeriod < time.Second {
+		h.md.observerPeriod = time.Second
 	}
 
+	h.md.observerResetTraffic = mdutil.GetBool(md, "observer.resetTraffic")
+
 	h.md.limiterRefreshInterval = mdutil.GetDuration(md, "limiter.refreshInterval")
 	if h.md.limiterRefreshInterval == 0 {
 		h.md.limiterRefreshInterval = 30 * time.Second