front: finish docx & back: init

backend/utils/method.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"net/http"
+
+	"github.com/sirupsen/logrus"
+)
+
+// IP gets ip from r.Header's X-FORWARDED-FOR or r.RemoteAddr
+func IP(r *http.Request) string {
+	forwarded := r.Header.Get("X-FORWARDED-FOR")
+	if forwarded != "" {
+		return forwarded
+	}
+	return r.RemoteAddr
+}
+
+// IsMethod check if the method meets the requirement
+// and response 405 Method Not Allowed if not matched
+func IsMethod(m string, w http.ResponseWriter, r *http.Request) bool {
+	logrus.Infoln("[utils.IsMethod]\t accept", IP(r), r.Method, r.URL)
+	if r.Method != m {
+		http.Error(w, "405 Method Not Allowed", http.StatusMethodNotAllowed)
+		return false
+	}
+	return true
+}