diff --git a/header.go b/header.go
index d7d5f0c..a037314 100644
--- a/header.go
+++ b/header.go
@@ -42,9 +42,11 @@ func GetDomain(req *http.Request) string {
 		scheme = "https://"
 	}
 	var host string = GetHost(req)
-
-	host = strings.Split(host, ":")[0]
-
+	hosts := strings.Split(host, ":")
+	host = hosts[0]
+	if hosts[1] == "443" {
+		scheme = "https://"
+	}
 	var w strings.Builder
 	w.WriteString(scheme)
 	w.WriteString(host)
diff --git a/weekday.go b/weekday.go
new file mode 100644
index 0000000..e8440b7
--- /dev/null
+++ b/weekday.go
@@ -0,0 +1,54 @@
+package helper
+
+import (
+	"strconv"
+	"strings"
+	"time"
+)
+
+/**
+ * 星期几索引化
+ * 2021/02/24
+ * gz
+ */
+func GetWeekday() string {
+	week := []string{"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}
+
+	var index int
+
+	today := time.Now().Weekday().String()
+
+	for key, day := range week {
+		if day == today {
+			index = key
+			break
+		}
+	}
+
+	return strconv.Itoa(index)
+}
+
+/**
+ * 今天是否可用
+ * weekdays 0,1,2,4
+ * 2021/02/24
+ * gz
+ */
+func TodayCanUse(weekdays string) bool {
+
+	if weekdays == "" {
+		return true
+	}
+	days := strings.Split(weekdays, ",")
+
+	var can bool = false
+	today := GetWeekday()
+	for _, day := range days {
+		if today == day {
+			can = true
+			break
+		}
+	}
+
+	return can
+}