diff --git a/server.go b/server.go
index 86b979c..9be8c94 100644
--- a/server.go
+++ b/server.go
@@ -795,6 +795,17 @@ func (hc *HttpApiBroker) AddHandler(receiver HttpApiHandler) {
 	}
 }
 
+func (hc *HttpApiBroker) CallByHeader(w http.ResponseWriter, r *http.Request) {
+	funcname := r.Header.Get("AS-X-CALL")
+	if len(funcname) == 0 {
+		logger.Println("as-x-call header is missing")
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	hc.call(funcname, w, r)
+}
+
 func (hc *HttpApiBroker) Call(w http.ResponseWriter, r *http.Request) {
 	funcname := r.URL.Query().Get("call")
 	if len(funcname) == 0 {