diff --git a/modules/http_proxy_js_request.go b/modules/http_proxy_js_request.go
index f389db29..f87ede18 100644
--- a/modules/http_proxy_js_request.go
+++ b/modules/http_proxy_js_request.go
@@ -88,6 +88,16 @@ func (j *JSRequest) WasModified() bool {
 	return false
 }
 
+func (j *JSRequest) Header(name, deflt string) string {
+	name = strings.ToLower(name)
+	for _, h := range j.Headers {
+		if name == strings.ToLower(h.Name) {
+			return h.Value
+		}
+	}
+	return deflt
+}
+
 func (j *JSRequest) ReadBody() string {
 	raw, err := ioutil.ReadAll(j.req.Body)
 	if err != nil {
diff --git a/modules/http_proxy_js_response.go b/modules/http_proxy_js_response.go
index c393e82e..43034158 100644
--- a/modules/http_proxy_js_response.go
+++ b/modules/http_proxy_js_response.go
@@ -73,6 +73,17 @@ func (j *JSResponse) WasModified() bool {
 	return false
 }
 
+func (j *JSResponse) Header(name, deflt string) string {
+	name = strings.ToLower(name)
+	for _, header := range strings.Split(j.Headers, "\n") {
+		parts := strings.SplitN(core.Trim(header), ":", 2)
+		if len(parts) == 2 && strings.ToLower(parts[0]) == name {
+			return parts[1]
+		}
+	}
+	return deflt
+}
+
 func (j *JSResponse) ToResponse(req *http.Request) (resp *http.Response) {
 	resp = goproxy.NewResponse(req, j.ContentType, j.Status, j.Body)
 	if j.Headers != "" {