From 1fcf46219557a6e4bb2154c0464bf834316501bb Mon Sep 17 00:00:00 2001
From: Jonathan Brown <jbrown@bluedroplet.com>
Date: Mon, 3 Oct 2016 17:06:13 +0700
Subject: [PATCH] Set CORS Max-Age to avoid a preflight OPTIONS request for
 every request.

---
 rpc/http.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rpc/http.go b/rpc/http.go
index afcdd4bd64..72a991b313 100644
--- a/rpc/http.go
+++ b/rpc/http.go
@@ -170,6 +170,7 @@ func newCorsHandler(srv *Server, corsString string) http.Handler {
 	c := cors.New(cors.Options{
 		AllowedOrigins: allowedOrigins,
 		AllowedMethods: []string{"POST", "GET"},
+		MaxAge: 3600,
 	})
 	return c.Handler(srv)
 }