Merge pull request #43 from delta10/fix/42-options-response-filter-proxy

Return options response from filter-proxy

Author: bartjkdp

cmd/filter-proxy/main.go

@@ -45,6 +45,12 @@ func main() {
 
 		if path.Passthrough {
 			router.PathPrefix(path.Path).HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				if r.Method == http.MethodOptions {
+					w.Header().Add("Methods", "OPTIONS, GET, HEAD")
+					writeError(w, http.StatusOK, "options response from filter-proxy")
+					return
+				}
+
 				client := &http.Client{}
 
 				//http: Request.RequestURI can't be set in client requests.
@@ -99,6 +105,12 @@ func main() {
 					return
 				}
 
+				if r.Method == http.MethodOptions {
+					w.Header().Add("Methods", "OPTIONS, GET, HEAD")
+					writeError(w, http.StatusOK, "options response from filter-proxy")
+					return
+				}
+
 				utils.DelHopHeaders(r.Header)
 
 				var bodyFilterParams map[string]interface{}